TP-700 Instruction Manual

TP-700 Instruction Manual
INSTRUCTION MANUAL
Detcon Model TP-700
TP-700 Hydrogen Sulfide Sensor
This manual covers the following ranges:
0-20ppm, 0-50ppm, 0-100ppm and 0-200ppm
DETCON, Inc.
4055 Technology Forest Blvd.,
The Woodlands, Texas 77381
Ph.281.367.4100 / Fax 281.298.2868
www.detcon.com
August 7, 2014 • Document #3150 • Revision 3.5
Model TP-700
This page left intentionally blank
Model TP-700
ii
Model TP-700
Table of Contents
1.
Introduction ..................................................................................................................................................1
1.1
Description.......................................................................................................................................... 1
1.2
Sensor Electronics Design .................................................................................................................. 1
1.3
Modular Mechanical Design............................................................................................................... 2
1.4
Plug-in Replaceable Sensor ................................................................................................................ 3
2. Installation ....................................................................................................................................................4
2.1
ATEX Operational Guidelines for Safe Use....................................................................................... 4
2.2
Sensor Placement ................................................................................................................................ 5
2.3
Sensor Contaminants and Interference ............................................................................................... 6
2.4
Mounting Installation.......................................................................................................................... 7
2.5
Electrical Installation .......................................................................................................................... 8
2.6
Field Wiring........................................................................................................................................ 9
2.7
Initial Start Up................................................................................................................................... 10
2.7.1 Initial Operational Tests ............................................................................................................... 11
3. Operation ....................................................................................................................................................12
3.1
Programming Magnet Operating Instructions................................................................................... 12
3.2
Operator Interface ............................................................................................................................. 13
3.3
Normal Operation ............................................................................................................................. 14
3.4
Calibration Mode (AutoSpan)........................................................................................................... 15
3.5
Program Mode .................................................................................................................................. 17
3.5.1 Navigating Program Mode ........................................................................................................... 17
3.5.2 View Sensor Status....................................................................................................................... 18
3.5.3 Set AutoSpan Level ...................................................................................................................... 19
3.5.4 Set Range...................................................................................................................................... 19
3.5.5 Set Serial ID ................................................................................................................................. 20
3.5.6 Set Heater Power .......................................................................................................................... 20
3.5.7 Signal Output Check..................................................................................................................... 21
3.5.8 Restore Factory Defaults .............................................................................................................. 21
3.6
Program Features .............................................................................................................................. 22
3.6.1 Operational Features..................................................................................................................... 22
3.6.2 Fault Diagnostic/Failsafe Features ............................................................................................... 22
4. RS-485 Modbus™ Protocol .......................................................................................................................25
Content Description.............................................................................................................................................25
5. Service and Maintenance............................................................................................................................27
5.1
Calibration Frequency....................................................................................................................... 27
5.2
Visual Inspection .............................................................................................................................. 27
5.3
Condensation Prevention Packet....................................................................................................... 27
5.4
Replacement of Plug-in H2S Sensor ................................................................................................. 27
5.5
Replacement of ITM ......................................................................................................................... 28
5.6
Replacement of TP-700 Sensor Assembly........................................................................................ 29
5.7
Replacement of the Bottom Housing................................................................................................ 29
6. Troubleshooting Guide...............................................................................................................................30
7. Customer Support and Service Policy ........................................................................................................33
7.1
Warranty Notice................................................................................................................................ 33
8. TP-700 Sensor Warranty ............................................................................................................................34
8.1
Plug-in H2S Sensor Warranty ........................................................................................................... 34
8.2
ITM Electronics Warranty ................................................................................................................ 34
8.3
Terms & Conditions.......................................................................................................................... 34
9. Appendix ....................................................................................................................................................35
9.1
Specifications.................................................................................................................................... 35
Model TP-700
iii
Model TP-700
9.2
Spare Parts, Sensor Accessories, Calibration Equipment ................................................................. 37
9.3
Model TP-700 Engineering Drawings .............................................................................................. 38
10.
Revision Log ......................................................................................................................................... 38
Table of Figures
Figure 1 ITM Circuit Functional Block Diagram................................................................................................. 2
Figure 2 Sensor Assembly Front View ............................................................................................................... 2
Figure 3 Sensor Assembly Breakaway................................................................................................................. 3
Figure 4 TP Plug-in Sensor Cell........................................................................................................................... 3
Figure 5 ATEX Approval Label........................................................................................................................... 4
Figure 6 Outline and Mounting Dimensions ........................................................................................................ 7
Figure 7 Typical Installation ................................................................................................................................ 8
Figure 8 Sensor Wire Connections..................................................................................................................... 10
Figure 9 Magnetic Programming Tool ............................................................................................................... 12
Figure 10 Magnetic Programming Switches ...................................................................................................... 12
Figure 11 TP-700 Software Flowchart ............................................................................................................... 14
Figure 12 Sensor Assembly................................................................................................................................ 27
Figure 13 Sensor PCB ........................................................................................................................................ 30
List of Tables
Table 1 Cross Interference Gases ......................................................................................................................... 6
Table 2 Wire Gauge vs. Distance ......................................................................................................................... 9
Shipping Address: 4055 Technology Forest Blvd., The Woodlands Texas 77381
Mailing Address: P.O. Box 8067, The Woodlands Texas 77387-8067
Phone: 888.367.4286, 281.367.4100 • Fax: 281.292.2860 • www.detcon.com • sales@detcon.com
Model TP-700
iv
Model TP-700
1. Introduction
1.1 Description
Detcon Model TP-700 hydrogen sulfide sensors are non-intrusive “Smart” sensors
designed to detect and monitor H2S in air. Ranges of detection are 0-20ppm, 0-50ppm,
0-100ppm, and 0-200ppm. The sensor features an LED display of current reading,
fault and calibration status. The Sensor is equipped with standard analog 4-20mA and
Modbus™ RS-485 outputs. A primary feature of the sensor is its method of automatic
calibration, which guides the user through each step via fully scripted instructions
displayed on the LED display.
The microprocessor-supervised electronics are packaged in an encapsulated module
and housed in an explosion proof casting, called the ITM (Intelligent Transmitter
Module). The ITM includes a four character alpha/numeric LED used to display sensor
readings, and the sensor’s menu driven features when the hand-held programming
magnet is used.
Solid State H2S Sensor Technology
The sensor technology is a patented solid-state mixed metal oxide semiconductor.
The sensor consists of two thin films, a temperature sensitive heater film, and a
hydrogen sulfide sensitive sensor film. Both films are deposited on a silicon
microchip by vacuum deposition. The heater film elevates the operating
temperature of the sensor film to a level where a good sensitivity and response to
hydrogen sulfide is achieved. The sensor film is a proprietary mixed metal oxide
that shows an extremely stable and dynamic response to hydrogen sulfide gas.
Range of sensitivity is from parts per billion to percent by volume. The rugged
sensor is capable of maintaining its operating characteristics for periods of up to 710 years in most industrial environments and as such, is supported by a 10-year
conditional warranty.
Principle of Operation
Method of detection is by diffusion/adsorption. Air and H2S diffuse through a sintered stainless steel filter
(flame arrestor) and contact the heated surface of the metal oxide sensor film. As hydrogen sulfide gas
molecules react with oxygen ions on the film, there is a decrease in electrical resistance proportional to the gas
concentration. The heater film elevates the temperature of the sensor film creating convection and promoting
a quick response to changing gas concentrations. Electronically, the heater film is used to maintain a constant
temperature of the sensor film enhancing stability and repeatability. The sensor response is reversible and
results in continuous monitoring of ambient air conditions.
1.2 Sensor Electronics Design
Intelligent Sensor Module
The Intelligent Transmitter Module (ITM) is a fully encapsulated microprocessor-based package that accepts a
plug-in field replaceable H2S sensor. Circuit functions include extensive I/O circuit protection, sensor preamplifier, sensor temperature control, on-board power supplies, microprocessor, LED display, magnetic
programming switches, a linear 4-20mA DC output, and a Modbus™ RS-485 output. Magnetic program
switches located on either side of the LED Display are activated via a hand-held magnetic programming tool,
TP-700 Instruction Manual
Rev. 3.5
Page 1 of 38
Model TP-700
thus allowing non-intrusive operator interface with the ITM. Calibration can be accomplished without
declassifying the area. Electrical classifications are Class I, Division 1, Groups B, C, D and Class I, Zone 1,
Group IIB+H2.
Pre-Amp
Plug-In
Sensor
Element
Temperature
Control
Display
MicroProcessor
RS-485
I/O
Circuit
Protection
Analog 4-20mA Out
Modbus™ RS-485 Output
4-20mA
Power In
Power Supply
Figure 1 ITM Circuit Functional Block Diagram
detcon inc.
LED Display
MODEL
Program Switch #1
Splash Guard Adapter
Locking Set-Screw
TP-700
Program Switch #2
H2S Sensor
Figure 2 Sensor Assembly Front View
1.3 Modular Mechanical Design
The Model TP-700 Sensor Assembly is completely modular and is made up of four parts (See Figure 3 for
Assembly Break-away):
1) TP-700 Intelligent Sensor Module (ITM)
2) Field Replaceable Plug-in H2S Gas Sensor
3) Model 700 Housing Bottom Assembly (contains the Housing Bottom, Flame Arrestor, Retaining Ring,
and rubber O-Ring’s)
4) Splash Guard.
NOTE: All metal components are constructed from electro polished 316 Stainless Steel in order to maximize
corrosion resistance in harsh environments.
TP-700 Instruction Manual
Rev. 3.5
Page 2 of 38
Model TP-700
Splash Guard
Adapter
Plug-in Replaceable
H2S Sensor
Interconnect
Wires
detcon inc.
Housing Bottom
Locking Set-Screw
MODEL
O-Rings
TP-700
H2S Sensor
SplashGuard
Lens and LED
Display
Magnetic
Programming
Switches
Intelligent Transmitter Module (ITM)
Micro-processor controlled circuit
encapsulated in an Explosion proof
housing.
Figure 3 Sensor Assembly Breakaway
1.4 Plug-in Replaceable Sensor
The Detcon solid-state H2S gas sensor is a field proven, plug-in replaceable type sensor with over-sized goldplated connections that eliminate corrosion problems. It can be accessed and replaced in the field very easily
by releasing the locking screw and unthreading the housing bottom. The Detcon solid state H2S sensor has an
infinite shelf life and is supported by a 10 year, industry-leading warranty.
Figure 4 TP Plug-in Sensor Cell
TP-700 Instruction Manual
Rev. 3.5
Page 3 of 38
Model TP-700
2. Installation
2.1 ATEX Operational Guidelines for Safe Use
1. Install sensor only in areas with classifications matching with those described on the ATEX approval
label. Follow all warnings listed on the label.
Figure 5 ATEX Approval Label
2. Ensure that the sensor is properly threaded into a suitable explosion-proof rated junction box with a
downward pointing female ¾” NPT threaded connection. The sensor should be threaded up at least 5
full turns until tight, with the LED display facing forward. Avoid use of Teflon Tape, or any type of
non-conductive pipe thread coating on the NPT threaded connection.
3. A good ground connection should be verified between the sensor’s metal enclosure and the junction
box. If a good ground connection is not made, the sensor can be grounded to the junction box using
the sensor’s external ground lug. Also verify a good ground connection between the junction box and
earth ground. Installer shall use ring terminal to make connection to earth ground to be secured by
screw and lockwasher on sensor housing.
4. Ensure that the Housing Bottom and plug-in sensor are installed during operation. The Housing
Bottom should be threaded tightly to the Intelligent Transmitter Module. The locking setscrew (M3.5
x 0.6 6g6h Stainless Steel Allen set screw cup point with yield strength of greater than 40,000 PSI,
typical 80,000 PSI) should then be tightened down to keep the Housing Bottom from being
inadvertently removed or from becoming loose under vibration. The locking setscrew ensures that
Housing Bottom is only removable by authorized personnel with the use of special tools. A M1.5
Allen Wrench is required. If screw requires replacement, only an identical screw may be used.
5. Removal of the Housing Bottom violates the Ex d protection method and hence power must be
removed from the sensor prior its safe removal.
6. The screws holding down the retaining plate label are special fasteners of type Stainless Steel, Phillips
Pan-head Machine screw, M3 x 0.5 6g6h having yield strength of greater than 40,000 PSI, typical
80,000 PSI. If screw requires replacement, only an identical screw may be used.
7. Proper precautions should be taken during installation and maintenance to avoid the build-up of static
charge on the plastic components of the sensor. These include the splashguard and splashguard
adapter.
8. Do not operate the sensor outside of the stated operating temperature limits.
9. Do not operate the sensor outside the stated operating limits for voltage supply.
10. These sensors meet EN60079-0:2009, EN60079-1:2007.
TP-700 Instruction Manual
Rev. 3.5
Page 4 of 38
Model TP-700
2.2 Sensor Placement
Selection of sensor location is critical to the overall safe performance of the product. Five factors play an
important role in selection of sensor locations:
(1) Density of the gas to be detected
(2) Most probable leak sources within the industrial process
(3) Ventilation or prevailing wind conditions
(4) Personnel exposure
(5) Maintenance access
(6) Additional Placement Considerations
Density
Placement of sensors relative to the density of the target gas is such that sensors for the detection of heavier
than air gases should be located within 4 feet of grade as these heavy gases will tend to settle in low lying
areas. For gases lighter than air, sensor placement should be 4-8 feet above grade in open areas or in pitched
areas of enclosed spaces.
Note: H2S is heavier than air.
Leak Sources
The most probable leak sources within an industrial process include flanges, valves, and tubing connections of
the sealed type where seals may either fail or wear. Other leak sources are best determined by facility
engineers with experience in similar processes.
Ventilation
Normal ventilation or prevailing wind conditions can dictate efficient location of gas sensors in a manner
where the migration of gas clouds is quickly detected.
Personnel Exposure
The undetected migration of gas clouds should not be allowed to approach concentrated personnel areas such
as control rooms, maintenance or warehouse buildings. A more general and applicable thought toward
selecting sensor location is combining leak source and perimeter protection in the best possible configuration.
Maintenance Access
Consideration should be given to providing easy access for maintenance personnel. Consideration should also
be given to the consequences of close proximity to contaminants that may foul the sensor prematurely.
NOTE: In all installations the gas sensor should point straight down (refer to Figure 7).
Improper sensor orientation may result in false readings and permanent sensor damage.
Additional Placement Considerations
The sensor should not be positioned where it may be sprayed or coated with surface contaminating substances.
Painting sensor assemblies is prohibited.
Although the sensor is designed to be RFI resistant, it should not be mounted in close proximity to highpowered radio transmitters or similar RFI generating equipment.
TP-700 Instruction Manual
Rev. 3.5
Page 5 of 38
Model TP-700
When possible mount in an area void of high wind, accumulating dust, rain or splashing from hose spray,
direct steam releases, and continuous vibration. If the sensor cannot be mounted away from these conditions
then make sure the Detcon Harsh Environment Splashguard accessory is used.
Do not mount in locations where temperatures will exceed the operating temperature limits of the sensor.
Where direct sunlight leads to exceeding the high temperature-operating limit, use a sunshade to help reduce
temperature.
2.3 Sensor Contaminants and Interference
Solid State H2S sensors may be adversely affected by exposure to certain airborne substances. Loss of
sensitivity or corrosion may be gradual if such materials are present in sufficient concentrations.
The more common materials that potentially cause problems with the sensors are as follows:




Silicone vapors such as those found in greases and lubricants
Halide Compounds containing Chlorine, Chlorine Dioxide, Fluorine, HF, HCl, and Bromine
Caustic and Acid liquids and concentrated vapors
Heavy metals such as tetraethyl lead
The presence of such contaminants in an area does not preclude the use of this H2S sensor technology,
although it is likely that the sensor lifetime will be shorter as a result. Use of this sensor in these environments
may require more frequent calibration checks to ensure safe system performance.
Solid State H2S sensors require O2 in the background gas and the reading is affected by changing O2 levels.
Interference Data
There are some gases typically found in industrial environments that can cause a cross-interference response
on the sensor. See the Table below for some examples.
Table 1 Cross Interference Gases
GAS
PPM
GAS
PPM
Methane
Ethane
Hexane
Propane
Butane
Carbon Monoxide
Carbon Dioxide
Carbon Disulfide
Methanol
Isopropanol
25,000 = 0
5,000 = 0
5,000 = 0
5,000 = 0
5,000 = 0
800 = 0
5,000 = 0
14 = 0
500 = 5
500 = 3
Ammonia
Diesel Fuel
Dimethyl Sulfide
Ethylene
Freon 12
Hydrogen
Methyl Mercaptan
Sulfur Dioxide
Toluene
Ethanol
500 = 1
1000 = 0
4.4 = 0
200 = 0
1,000 = 0
1,000 = 8
10 = 5
300 = 0
32 = 0
500 = 5
NOTE: The Detcon MOS Sensor Cell can be damaged to the point of non-functioning if the
unit is left off power and in the presence normal air levels of moisture for periods exceeding 8
hours.
NOTE: Always protect the sensor cell with the Detcon Sealing Cap and a fresh desiccant
TP-700 Instruction Manual
Rev. 3.5
Page 6 of 38
Model TP-700
packet when the sensor is powered off, this will avoid permanent sensor cell damage and help
preserve the span calibration.
2.4 Mounting Installation
The TP-700 sensor assembly is designed to be threaded into a ¾” Female NPT fitting of a standard cast metal,
Explosion-Proof Enclosure or Junction Box. There are two wrench flats on the upper section of the sensor that
should be used to thread the sensor into the ¾” NPT receiving connection. Thread the sensor up until tight (5
turns is typically expected) and until the display is pointed in the direction that sensor will normally be viewed
and accessed.
NOTE: Do not use Teflon Tape or any other type of Pipe Thread material on the ¾” threads
unless the unit is mounted in a severe or harsh environment. Metal-on-metal contact must be
maintained to provide a solid electrical ground path. If Teflon Tape is used the Sensor must be
externally grounded using a ground strap.
The TP-700 should be vertically oriented so that the sensor points straight downward. The explosion-proof
enclosure or junction box would then typically be mounted on a wall or pole. Detcon provides a standard
selection of junction boxes available as sensor accessories (See Figure 4 below), but any appropriately rated
enclosure with a downward facing ¾” Female NPT connection will suffice.
5.5"
4.95"
3.675"
5.25"
Spacer
Ø0.265 x2
Mounting Holes
Mounting
Bolt
3/4" NPT
(Detcon's Junction-Box shown)
12.45"
detcon inc.
4.88"
MODEL
TP-700
Use Spacers to move
the J-Box and Sensor
Assembly away from the
wall at least 0.25-0.5" to
allow access to Sensor
mounting surface)
Explosion Proof Enclosure
Junction-Box
Wall (or other
8-32 Thread
Ground Point
Sensor Assembly
7.205"
H2S Sensor
2.1"
2"
Splash Guard
Figure 6 Outline and Mounting Dimensions
When mounting on a wall, it is recommended to use a 0.25”-0.5” spacer underneath the mounting ears of the
Detcon standard J-Box to offset the sensor assembly from the wall and create open access around the sensor
assembly. Spacing requirements for other junction boxes may vary.
TP-700 Instruction Manual
Rev. 3.5
Page 7 of 38
Model TP-700
When mounting on a pole, secure the Junction Box to a suitable mounting plate and attach the mounting plate
to the pole using U-Bolts. (Pole-Mounting brackets for Detcon J-box accessories are available separately.)
2.5 Electrical Installation
The Sensor Assembly should be installed in accordance with local electrical codes. The sensor assemblies are
CSA/NRTL approved (US and Canada) for Class I, Division 1, Groups B, C, & D area classifications, and are
ATEX Approved for Class I, Zone 1, Group IIB+H2 area classifications.
Proper electrical installation of the gas sensor is critical for conformance to Electrical Codes and to avoid
damage due to water leakage. Refer to Figure 7 and Figure 8 for proper electrical installation.
NOTE: If a conduit run exits the secondary port, repeat the installation technique shown in
Figure 7.
In Figure 7, the drain allows H2O condensation inside the conduit run to safely drain away from the sensor
assembly. The electrical seal fitting is required to meet the National Electrical Code per NEC Article 500-3d
(or Canadian Electrical Code Handbook Part 1 Section 18-154). Requirements for locations of electrical seals
are covered under NEC Article 501-5. Electrical seals also act as a secondary seal to prevent water from
entering the wiring terminal enclosure. However, they are not designed to provide an absolute watertight seal,
especially when used in the vertical orientation.
Conduit
Plug any unused
ports
"T"
EYS Seal Fitting
Explosion Proof
Housing
(J-Box)
Drain
Customer
Supplied Wiring
Explosion
Proof
Junction Box
(+)
(-)
mA
N/U
A(+)
B(-)
detcon inc.
TP-700
Sensor
Assembly
Blu
Wht
mA
A(+)
B(-)
(+)
(-)
Mount TPM in Explosion
Proof Enclosure to ground
unit properly. Mount to
bottom of enclosure using
6-32 screws.
Red
Blk
Grn
Transient Protection Module
(TPM) P/N 500-003087-100
6-Pin Pheonix Plug
P/N 306-175705-100
MODEL
TP-700
H2S Sensor
Wiring to
Sensor Assembly
Figure 7 Typical Installation
TP-700 Instruction Manual
Rev. 3.5
Page 8 of 38
Model TP-700
NOTE: A conduit seal is typically required to be located within 18" of the J-Box and Sensor
Assembly. Crouse Hinds type EYS2, EYD2 or equivalent are suitable for this purpose.
NOTE: The Detcon Warranty does not cover water damage resulting from water leaking into
the enclosure. However, since the electronics are 100% epoxy encapsulated, only the wire
terminations could get wet. Moisture could cause abnormal operation and possibly corrosion
to the terminal connections, but permanent damage to the sensor would not be expected.
NOTE: Any unused ports should be blocked with suitable ¾” male NPT plugs. Detcon
Supplies one ¾” NPT male plug with their accessory J-box enclosures. If connections are
other than ¾” NPT, use an appropriate male plug of like construction material.
2.6 Field Wiring
Detcon Model TP-700 solid-state H2S sensor assemblies require three conductor connections between power
supplies and host electronic controller’s 4-20mA output, and 2 conductor connections for the Modbus™ RS485 serial interface. Wiring designations are + (DC), – (DC), mA (sensor signal), and Modbus™ RS-485 A
(+), and B (-). Maximum wire length between sensor and 24VDC source is shown in the Table below.
Maximum wire size for termination in the Detcon J-Box accessory is 14 gauge.
Table 2 Wire Gauge vs. Distance
AWG
22
20
18
16
14
Wire Dia.
0.723mm
0.812mm
1.024mm
1.291mm
1.628mm
Meters
700
1120
1750
2800
4480
Feet
2080
3350
5250
8400
13,440
Over-Current
Protection
3A
5A
7A
10A
20A
NOTE 1: Wiring table is based on stranded tinned copper wire and is designed to serve as a
reference only.
NOTE 2: Shielded cable is required for installations where cable trays or conduit runs include
high voltage lines or other possible sources of induced interference. Separate conduit runs are
highly recommended in these cases.
NOTE 3: The supply of power should be from an isolated source with over-current protection
as stipulated in table.
Terminal Connections
CAUTION: Do not apply System power to the sensor until all wiring is properly terminated. Refer
to Section 2.7 Initial Start Up
TP-700 Instruction Manual
Rev. 3.5
Page 9 of 38
Model TP-700
Customer
Supplied Wiring (In)
Power from and 4-20mA
out to Control Device
Explosion
Proof
Junction Box
Customer
Supplied Wiring
(Out to next Device)
(+)
(-)
(+)
(-)
mA
mA
A(+)
B(-)
A(+)
B(-)
Modbus RS-485 to
next Device
Modbus RS-485 to
Host Control Device
Blu
Wht
mA
A(+)
B(-)
(+)
(-)
Red
Blk
Grn
Install a 100-250 Ohm
resistor if the 4-20mA
output is not used
Wiring to
Sensor Assembly
Figure 8 Sensor Wire Connections
a) Remove the junction box cover. Identify the terminal blocks for customer wire connections.
b) Observing correct polarity, terminate the 3-conductor 4-20mA field wiring (+, -, and mA) to the sensor
assembly wiring in accordance with the detail shown in Figure 8. If the 4-20mA output is not used, the
green wire from the sensor must be connected to the (-) terminal on the Transient Protection Module.
NOTE: If the 4-20mA output is not being used, the Green wire from the sensor must be
connected to the Black wire at the (-) terminal on the Transient Protection Module to
ensure RS-485 communication is not disrupted by a 4-20mA Fault.
c) If applicable, terminate the RS-485 serial wiring as shown in Figure 8. Use the second plug (Out) as
termination point on the customer side to facilitate a continuous RS-485 serial loop.
The RS-485 (if applicable) requires 24 gauge, two conductor, shielded, twisted pair cable between sensor and
host PC. General Cable Commodore part number ZO16P0022189 is recommended.
NOTE: Install a 120Ω resistor across A & B terminals on the last sensor in the serial loop.
d) Trim all exposed wire leads if they are not permanently landed in the terminal block.
e) Replace the junction box cover.
NOTE: A 6-32 threaded exterior ground point is provided on the sensor housing for an
external ground. If the Sensor Housing is not mechanically grounded, an external ground strap
must be used to ensure that the sensor is electrically grounded.
2.7 Initial Start Up
Upon completion of all mechanical mounting and termination of all field wiring, apply system power in the
range of 11.5-30VDC (24VDC typical) and observe the following normal conditions:
TP-700 Instruction Manual
Rev. 3.5
Page 10 of 38
Model TP-700
a) TP-700 display reads “0”, and no fault messages are flashing.
b) A temporary upscale reading may occur as the sensor heats up. This upscale reading will decrease to “0”
ppm within 1-2 minutes of power-up, assuming there is no gas in the area of the sensor.
NOTE: A desiccant cap with a desiccant packet is attached to the sensor cell housing to avoid
damage during storage and shipping. This prevents water from contacting the sensor film, and
as a result helps to retain the stability of the factory span calibration.
c) Remove the desiccant cap about 10 minutes after applying power to the sensor and install the
weatherproof splashguard accessory supplied with the sensor.
IMPORTANT NOTE: Do not remove the desiccant cap and cover until power is applied to
the sensor. Store the desiccant caps with the desiccant packets in a sealed container (i.e. ziplock Bag) for future use. It is mandatory to reinstall the desiccant cap and packet during any
periods without power lasting more than 1 hour. An active desiccant packet is blue in color
and turns pink when consumed. (re-order P/N 960-240010-000). Do not use the desiccant
packet if it is pink in color, order new packets as required.
NOTE: The 4-20mA signal is held constant at 4mA for the first two minutes after power up.
2.7.1
Initial Operational Tests
After a warm up period of 1 hour, the sensor should be checked to verify sensitivity to H2S gas.
Material Requirements




Detcon PN 613-120000-700 700 Series Splash Guard with integral Cal Port -ORDetcon PN 943-000006-132 Threaded Calibration Adapter
Detcon PN 942-010112-025 Span Gas; 25ppm H2S in balance Air at fixed flow rate between 200 500cc/min (10ppm for 0-20ppm range)
Detcon PN 985-241100-321 In-Line Humidifying Tube
NOTE: Do not use H2S in Nitrogen background gas mixtures. This will cause significant
reading inaccuracies.
a) Connect the In-Line Humidifying Tube between the cal gas cylinder and the sensor. The humidifying tube
will introduce the ambient relative humidity into the Cal Gas as it passes through the tube.
b) Attach the calibration adapter to the threaded sensor housing. Apply the test gas at a controlled flow rate
of 200 - 500cc/min (200cc/min is the recommended flow). Allow 1-2 minutes for the reading to stabilize.
Observe that during the 1-2 minutes the ITM display increases to a level near that of the applied
calibration gas value.
c) Remove test gas and observe that the ITM display decreases to “0”.
Initial operational tests are complete. Detcon H2S gas sensors are factory calibrated prior to shipment, and
should not require significant adjustment on start up. However, it is recommended that a complete calibration
test and adjustment be performed 16 to 24 hours after power-up. Refer to span calibration instructions in
Section 3.4.
TP-700 Instruction Manual
Rev. 3.5
Page 11 of 38
Model TP-700
3. Operation
3.1 Programming Magnet Operating Instructions
The Operator Interface of the Model 700 Series gas sensors is accomplished via two internal magnetic
switches located to either side of the LED display (see Figure 10). The two switches, labeled “PGM1” and
“PGM2”, allow for complete calibration and configuration, thereby eliminating the need for area declassification or the use of hot permits.
Figure 9 Magnetic Programming Tool
The magnetic programming tool (Figure 9) is used to operate the magnetic switches. Switch action is defined
as momentary contact, 3-second hold, and 10-second hold. (Hold times are defined as the time from the point
when the arrow prompt ““ appears.) For momentary contact use, the programming magnet is briefly held
over a switch location. For 3-second hold, the programming magnet is held in place over the switch location
for three seconds. For 10-second hold, the programming magnet is held in place over the switch location for
10 seconds. The 3 and 10 second holds are generally used to enter calibration/program menus and save new
data. The momentary contact is generally used to move between menu items and to modify set-point values.
Arrows (“” and “”) are used on the LED display to indicate when the magnetic switches are activated. The
location of “PGM1” and “PGM2” are shown in Figure 10.
detcon inc.
LED Display
MODEL
Program Switch #1
TP-700
Program Switch #2
H2S Sensor
Figure 10 Magnetic Programming Switches
NOTE: While in the Program Mode, if there is no magnetic switch interaction after 4
consecutive menu scrolls, the sensor will automatically revert to normal operating condition.
While changing values inside menu items, if there is no magnet activity after 3-4 seconds
the sensor will revert to the menu scroll. (Exception to this is with “Signal Output Check”
mode.)
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Rev. 3.5
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Model TP-700
3.2 Operator Interface
The operating interface is menu-driven via the two magnetic program switches located under the target marks
of the sensor housing. The two switches are referred to as “PGM1” and “PGM2”. The menu list consists of
three major items that include sub-menus as indicated below. (Refer to the complete Software Flow Chart.)
Normal Operation
Current Reading and Fault Status
Calibration Mode
AutoSpan
Program Mode
View Sensor Status
Sensor Model Type
Current Software Version
Range of Detection
Serial ID address
AutoSpan Level
Days Since Last AutoSpan
Remaining Sensor Life
Sensor Heater Power
Sensor Heater Voltage
Raw Sensor Resistance
mA Output
Input Voltage Supply
Sensor Temperature
Set AutoSpan Level
Set Range
Set Serial ID
Set Heater Power
Signal Output Check
Restore Default Settings
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Rev. 3.5
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Model TP-700
Software Flowchart
Normal Operation
PGM1 (3)
PGM2 (10)
PGM1 (3)
PGM2 (3)
Exit
Calibration Mode
(Auto Span)
View Sensor Status
Auto Time-Out
PGM1/2 (M)
PGM1/2 (3)
Set AutoSpan Level
Set Range
AutoTime-out
PGM1/2 (M)
PGM1/2 (3)
Auto Time-Out
PGM1/2 (M)
PGM1/2 (3)
Set Serial ID
Auto Time-Out
PGM1/2 (M)
PGM1/2 (3)
Model Type
Version X.XX
Serial ID XX
inc
##
PGM2 (S)
PGM1 (S)
PGM1/2 (3)
##
PGM2 (S)
PGM1 (S)
PGM1/2 (3)
inc
dec
inc
dec
##
PGM2 (S)
PGM1 (S)
PGM1/2 (3)
dec
Range XXX ppm
AutoSpan @ XX
Set Heater Power
Auto Time-Out
PGM1/2 (M)
PGM1/2 (3)
Signal Output Check
Setting Heater
Simulation
PGM1/2 (3)
Restore Defaults
Auto Time-Out
PGM1/2 (M)
PGM1/2 (3)
Auto Time-Out
PGM1/2 (M)
PGM2 (10)
Last Cal XX Days
Sensor Life XXX%
Defaults Restored
Heater XXX mW
LEGEND:
Heater X.XX VDC
PGM1 - Program Switch Location #1
PGM2 - Program Switch Location #2
Resistance XXXXX
(S) - Momentary Swipe
(M) - Momentary hold of Magnet during text
scroll until the ">" appears, then release
(3) - 3 second hold from ">" prompt
(10) - 10 second hold from ">" prompt
Auto Time-out - 5 seconds
mA Output XX.XX
Voltage XX.X VDC
inc - Increase
dec - Decrease
#, ##, ### - numeric values
Sensor Temp XX C
Figure 11 TP-700 Software Flowchart
3.3 Normal Operation
In normal operation, the ITM Display continuously shows the current sensor reading, which will normally
appear as “ 0 ”. Once every minute, the LED display will flash the sensor’s units of measure and the gas type
(i.e. ppm H2S). If the sensor is actively experiencing any diagnostic faults, a “Fault Detected” message will
scroll across the display on the ITM display once every minute instead of the units of measure and the gas
type. At any time, while the sensor is in “Fault Detected” mode, PGM1 or PGM2 can be swiped to prompt the
sensor to display a list of the active faults.
In normal operation, the 4-20mA current output linearity corresponds with the full-scale range. The RS-485
Modbus™ serial output provides the current gas reading and complete fault status on a continuous basis when
polled by the master device.
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Rev. 3.5
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Model TP-700
3.4 Calibration Mode (AutoSpan)
Calibration Mode allows for sensor span calibration. Span calibration should be performed on a routine basis
(quarterly minimum) to ensure reliable performance. If a sensor has been exposed to any de-sensitizing gases
or to very high over-range H2S levels, then a re-calibration should be considered. Unless otherwise specified,
span adjustment is recommended at 25ppm for the 0-100 and 0-50ppm ranges (and 10ppm for 0-20ppm
range). This function is called “AUTO SPAN”.
Material Requirements:





Detcon PN 327-000000-000 MicroSafe™ Programming Magnet
Detcon PN 613-120000-700 700 Series Splash Guard with integral Cal Port and Calibration Wind
Guard (P/N 943-000000-000) -ORDetcon PN 943-000006-132 Threaded Calibration Adapter
Detcon PN 985-241100-321 In-Line Humidifying Tube
Detcon PN 942-010112-025 H2S Span Gas (recommended) or other suitable span gas source
containing H2S gas in air balance. A fixed flow rate of 200-500cc/min is recommended.
Alternate Span Calibration Methods:
The TP-700 Sensor may also be calibrated with the H2S glass ampoule technique. Detcon supplies a
cover for use with the industry standard ampoule breaking cup (available from General Monitors) that
has thread adapter to connect to the TP-700. The adapter cover is Detcon P/N 943-000GMI-CAP.
Remove the Detcon Splashguard and connect the adapter cover firmly in place. Attach the ampoule
breaking cup firmly to the cover with ampoule installed and follow the balance of the instructions for
breaking ampoule and executing AutoSpan.
The TP-700 sensor may also be calibrated using a certified H2S gas generator product set for the
correct H2S gas level and flow rate.
NOTE 1: Before performing AutoSpan Calibration, verify that the AutoSpan level matches
the span calibration gas concentration as described in Section 3.5.3 Set AutoSpan Level.
NOTE 2: The span gas source must have a normal background concentration of 20.9% O2
(H2S balanced with Air). Pure Nitrogen background mixtures are not acceptable! Significant
span calibration inaccuracies will result.
NOTE 3: An H2S gas concentration of 25ppm is strongly recommended for 0-50 and 0100ppm ranges (10ppm span gas for 0-20ppm range). This should be supplied at a controlled
flow rate of 200 to 500cc/min, with 200cc/min being the recommended flow rate. Other
concentrations can be used if as they fall within allowable levels.
NOTE 4: Span gas bottles contain 0% humidity and this ultra-low humidity condition will
cause inaccurate readings when used to calibrate a sensor. To prevent this error, Detcon
prescribes the use of a 24” flexible In-Line Humidifying Tube, which adds the relative
humidity to the span gas. The humidifying tube is not necessary when using a gas generating
calibration device that consists of pumped ambient air and an H2S generating source.
NOTE 5: The Calibration Wind Guard must be used when the Splashguard Adapter with
integral Cal Port is used. Failure to use the Calibration Wind Guard may result in an inaccurate
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Model TP-700
AutoSpan calibration.
CAUTION: Verification that the calibration gas level setting matches the calibration span gas
concentration is required before executing “AutoSpan” calibration. These two numbers must be equal.
AutoSpan consists of entering Calibration Mode and following the menu-displayed instructions. The display
will ask for the application of span gas in a specific concentration. The applied gas concentration must be
equal to the calibration gas level setting. The factory default setting and recommendation for span gas
concentration is 10ppm for the 0-20ppm range and 25ppm for the 0-50ppm and 0-100ppm ranges. If a span
gas containing the recommended concentration is not available, other concentrations may be used as long as
they fall between 10% and 50% of selected full-scale range. However, any alternate span gas concentration
value must be programmed via the “Set AutoSpan Level” menu before proceeding with AutoSpan calibration.
Follow the instructions “a” through “e” below for AutoSpan calibration.
a) Verify that the AutoSpan Level is equal to the Calibration Span Gas Concentration. (Refer to View
Sensor Status in Section 3.5.2.) If the AutoSpan Level is not equal to the Calibration span gas
concentration, adjust the AutoSpan Level as instructed in Section 3.5.3 Set AutoSpan Level.
b) From Normal Operation, enter Calibration Mode by holding the programming magnet over PGM1 for 3
seconds. Note, the “” prompt will show that the magnetic switch is activated during the 3 second hold
period. The display will then scroll “PGM1=Exit PGM2=Span”. Hold the programming magnet over
PGM2 for 3 seconds to execute AutoSpan (or allow to timeout in 5 seconds if AutoSpan is not intended).
The ITM will then scroll “Apply XX ppm Gas”.
NOTE: Upon entering Calibration Mode, the 4-20mA signal drops to 2mA and is held at this
level until the program returns to normal operation. Modbus™ Status Register bit 14 is also set
to signify when the sensor is in-calibration mode.
c) Apply the span calibration test gas via the In-Line Humidifying Tube at a flow rate of 200-500cc/min
(200cc/min is the recommended flow rate). Optionally, the gas ampoule or gas generator H2S calibration
source may be used. As the sensor signal begins to increase the display will switch to reporting “XX“
reading methods as the ITM shows the sensor’s “as found” response to the span gas presented. If it fails to
meet the minimum in-range signal change criteria within 2½ minutes, the display will report “Range
Fault” twice and the ITM will return to normal operation, aborting the AutoSpan sequence. The ITM will
continue to report a “Range Fault” and will not clear the fault until a successful AutoSpan is completed.
Assuming acceptable sensor signal change, after 3 minutes the reading will auto-adjust to the programmed
AutoSpan level. During the next 30 seconds, the AutoSpan sequence checks the sensor for acceptable reading
stability. If the sensor fails the stability check, the reading is re-adjusted back to the AutoSpan level and the
cycle repeats until the stability check is passed. Up to three additional 30-second stability check periods are
allowed before the sensor reports a “Stability Fault” twice and the ITM will return to normal operation,
aborting the AutoSpan sequence. The ITM will continue to report a “Stability Fault” and will not clear the
fault until a successful AutoSpan is completed.
If the sensor passes the stability check, the ITM reports a series of messages:
“AutoSpan Complete”
“Sensor Life XXX%”
“Remove Span Gas”
d) Remove the span gas and calibration adapter, or the optional gas ampoule or gas generator calibration
technique components when AutoSpan cycle is complete. The ITM will report a live reading as it clears
toward “0”. When the reading clears below 5ppm, the ITM will display “Span Complete” and will revert
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Model TP-700
to normal operation. If the sensor fails to clear to less than 5ppm within 5 minutes, a “Clearing Fault” will
be reported twice and the ITM will return to normal operation, aborting the AutoSpan sequence. The ITM
will continue to report a “Clearing Fault” and will not clear the fault until a successful AutoSpan is
completed.
e) AutoSpan calibration is complete.
NOTE 1: If the sensor fails the minimum signal change criteria, a “Range Fault” will be
declared and a “Fault Detected” message will be displayed alternately with the sensor’s current
reading. The 4-20mA output will be taken to 0mA and the “Range Fault” fault bit will be set
on the Modbus™ output.
NOTE 2: If the sensor fails the stability criteria, a “Stability Fault” will be declared and a
“Fault Detected” message will be displayed alternately with the sensor’s current reading. The
4-20mA output will be taken to 0mA and the “Stability Fault” fault bit will be set on the
Modbus™ output.
NOTE 3: If the sensor fails the clearing time criteria, a “Clearing Fault” will be declared and a
“Fault Detected” message will be displayed alternately with the sensor’s current reading. The
4-20mA output will be taken to 0mA and the “Clearing Fault” fault bit will be set on the
Modbus™ output.
NOTE 4: The most common cause of “Range Fault” and “Stability Fault” is the improper
storage of the unit / sensor cell. When the sensor power is removed for any period of time, the
sensor cell should be protected with a Desiccant Pack (P/N 960-240010-000) and covered by
the Dust Cap (P/N 600-003232-000)
3.5 Program Mode
Program Mode provides a “View Sensor Status” menu to check operational and configuration parameters.
Program Mode provides for adjustment of the AutoSpan Level, Sensor Range, Heater Power, and Serial ID.
Additionally, Program Mode includes the diagnostic function “Signal Output Check” and “Restore Factory
Defaults”.
The Program Mode menu items appear in the order presented below:
View Sensor Status
Set AutoSpan Level
Set Range
Set Serial ID
Set Heater Power
Signal Output Check
Restore Default Settings
3.5.1
Navigating Program Mode
From Normal Operation, enter Program Mode by holding the magnet over PGM2 for 4 seconds (until the
displays starts to scroll “View Sensor Status”). Note, the “” prompt will show that the magnetic switch is
activated during the 4 second hold period. The ITM will enter Program Mode and the display will display the
first menu item “View Sensor Status”. To advance to the next menu item, hold the magnet over PGM1 or
PGM2 while the current menu item’s text is scrolling. At the conclusion of the text scroll the arrow prompt
(“” for PGM2 or “” for PGM1) will appear, immediately remove the magnet. The ITM will advance to the
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Rev. 3.5
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Model TP-700
next menu item. Repeat this process until the desired menu item is displayed. Note, PGM1 moves the menu
items from right to left and PGM2 moves the menu items from left to right.
To enter a menu item, hold the magnet over PGM1 or PGM2 while the menu item is scrolling. At the
conclusion of the text scroll the “”prompt (“” for PGM2 or “” for PGM1) will appear, continue to hold the
magnet over PGM1 or PGM2 for an additional 3-4 seconds to enter the selected menu item. If there is no
magnet activity while the menu item text is scrolling (typically 4 repeated text scrolls), the ITM will
automatically revert to Normal Operation.
3.5.2
View Sensor Status
View Sensor Status displays all current configuration and operational parameters including: sensor type,
software version number, detection range, AutoSpan level, days since last AutoSpan, estimated remaining
sensor life, heater power, heater voltage, raw resistance, mA output, input voltage and sensor ambient
temperature.
From the View Sensor Status text scroll, hold the magnet over PGM1 or PGM2 until the “” prompt appears
and continue to hold the magnet in place for an additional 3-4 seconds (until the display starts to scroll “Status
Is”). The display will scroll the complete list of sensor status parameters sequentially:
Sensor Model Type
The menu item appears as: “700 TP”
Current Software Version
The menu item appears as: “V X.XXZ”
Range of Detection.
The menu item appears as: “Range XXXppm”
Serial ID address.
The menu item appears as: “Serial ID XX”
AutoSpan Level.
The menu item appears as: “Auto Span Level XXppm”
Days Since Last AutoSpan.
The menu items appears as: “Last Cal XX days”
Remaining Sensor Life.
The menu item appears as: “Sensor Life 100%”
Sensor Heater Power
The menu item appears as: “Heater XXXmW”
Sensor Heater Voltage
The menu item appears as: “Heater X.XXVDC
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Rev. 3.5
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Model TP-700
Raw Sensor Resistance
The menu item appears as: “Resistance XXXXX”
mA Output
The menu item appears as: “mA Output XX.XX mA”
Input Voltage Supply
The menu item appears as: “Voltage XX.X VDC”
Operating Temperature
The menu item appears as: “Temp XX C”
When the status list sequence is complete, the ITM will revert to the “View Sensor Status” text scroll. The
user can either: 1) review list again by executing another 3-4 second hold, 2) move to another menu item by
executing a momentary hold over PGM1 or PGM2, or 3) return to Normal Operation via automatic timeout of
about 15 seconds (the display will scroll “View Sensor Status” 4 times and then return to Normal Operation).
3.5.3
Set AutoSpan Level
Set AutoSpan Level is used to set the span gas concentration level that is being used to calibrate the sensor.
This level is adjustable from 10% to 50% of selected full-scale range. The current setting can be viewed in
View Program Status.
The menu item appears as: “Set AutoSpan Level”.
From the Set AutoSpan Level text scroll, hold the magnet over PGM1 or PGM2 until the “” prompt appears
and continue to hold the magnet in place for an additional 3-4 seconds (until the display starts to scroll “Set
Level”). The display will switch to “ XX“ (where XX is the current gas level). Swipe the magnet
momentarily over PGM2 to increase or PGM1 to decrease the AutoSpan Level until the correct level is
displayed. When the correct level is achieved, hold the magnet over PGM1 or PGM2 for 3-4 seconds to
accept the new value. The display will scroll “Level Saved”, and revert to “Set AutoSpan Level” text scroll.
Move to another menu item by executing a momentary hold, or return to Normal Operation via automatic
timeout of about 15 seconds (the display will scroll “Set AutoSpan Level” 4 times and then return to Normal
Operation).
3.5.4
Set Range
Set Range is used to change full-scale ranges. This is selectable between 0-20, 0-50, 0-100ppm, and 0200ppm. The current range can be viewed in View Sensor Status using instruction given in Section 3.5.2
View Sensor Status.
The menu item appears as: “Set Range”.
From the “Set Range” text scroll, hold the programming magnet over PGM1 or PGM2 until the “” prompt
appears and continue to hold the magnet in place for an additional 3-4 seconds (until the display starts to scroll
“Set Range”). The display will then switch to “XXX“ (where XXX is the current Range). Swipe the magnet
momentarily over PGM2 to increase or PGM1 to decrease the range Level until the desired range is displayed.
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Rev. 3.5
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Model TP-700
Hold the magnet over PGM1 or PGM2 for 3 seconds to accept the new value. The display will scroll “Range
Saved”, and revert to “Set Range” text scroll.
Move to another menu item by executing a momentary hold, or, return to Normal Operation via automatic
timeout of about 15 seconds (the display will scroll “Set Range” 7 times and then return to Normal Operation).
NOTE: When switching between ranges, it may be necessary to readjust the AutoSpan Level.
3.5.5
Set Serial ID
Detcon Model TP-700 sensors can be polled serially via RS-485 Modbus™ RTU. Refer to Section 4.0 for
details on using the Modbus™ output feature.
Set Serial ID is used to set the Modbus™ serial ID address. It is adjustable from 01 to 256 in hexadecimal
format (01-FF hex). The current serial ID can be viewed in View Sensor Status using the instruction given in
Section 3.5.2 View Sensor Status.
The menu item appears as: “Set Serial ID”.
From the “Set Serial ID” text scroll, hold the programming magnet over PGM1 or PGM2 until the “” prompt
appears and continue to hold the magnet in place for an additional 3-4 seconds (until the display starts to scroll
“Set ID”). The display will then switch to “ XX“ (where XX is the current ID address). Swipe the magnet
momentarily over PGM2 to increase or PGM1 to decrease the hexadecimal number until the desired ID is
displayed. Hold the magnet over PGM1 or PGM2 for 3-4 seconds to accept the new value. The display will
scroll “ID Saved”, and revert to “Set Serial ID” text scroll.
Move to another menu item by executing a momentary hold, or, return to Normal Operation via automatic
timeout of about 15 seconds (the display will scroll “Set Serial ID” 5 times and then return to Normal
Operation).
3.5.6
Set Heater Power
Set Heater Power is used to set the each H2S sensor to the optimum operating temperature. This function is
performed during factory calibration of each TP-700 sensor assembly, and is not necessary during installation.
However, it is necessary to perform in the field if the plug-in H2S sensor is replaced or if the Restore Factory
Defaults function has been executed.
The menu item appears as: “Set Heater Power”.
NOTE: “Set Heater Power” is only necessary after new plug-in H2S sensor installation or after
use of the “Restore Factory Defaults” function. A full 3-4 second magnet hold on PGM1 or
PGM 2 is required to execute this function.
From the “Set Heater Power” text scroll, hold the programming magnet over PGM1 or PGM2 until the “”
prompt appears and continue to hold the magnet in place for an additional 3-4 seconds (until the display starts
to scroll “Setting Heater”). After scrolling “Setting Heater”, the ITM will adjust the Heater power. The
sequence should require about 2-minutes. When the cycle is complete, the ITM will revert to the “Set Heater
Power” text scroll.
NOTE: If the ITM cannot adjust the heater power within 3 minutes an error message, “Can’t
set, Reverting to Default”, will be scrolled. Refer to section 6 Troubleshooting Guide.
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Rev. 3.5
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Model TP-700
Move to another menu item by executing a momentary hold, or, return to Normal Operation via automatic
timeout of about 15 seconds (the display will scroll “Set Heater Power” 4 times and then return to Normal
Operation).
The current values for heater power and heater voltage can be observed in the “View Sensor Status” menu.
The target heater power setting at 25C operating temperature is 235 +/- 5mW. At the operating temperature
extremes the observed heater power settings will vary according to the data below:
50°C
0°C
-20°C
-40°C
3.5.7
normal heater power range is 215 +/- 5mW
normal heater power range is 260 +/- 5mW
normal heater power range is 275 +/- 5mW
normal heater power range is 295 +/- 5mW
Signal Output Check
Signal Output Check provides a simulated 4-20mA output and RS-485 Modbus™ output. This simulation
allows the user to conveniently perform a functional system check of their entire safety system. This signal
output simulation also aids the user in performing troubleshooting of signal wiring problems.
The menu item appears as: “Signal Output Check”.
From the “Signal Output Check” text scroll, hold the magnet over PGM1 or PGM2 until the “” prompt
appears and then hold continuously for an additional 10 seconds. Once initiated, the display will scroll
“Simulation Active” until the function is stopped. During simulation mode, the 4-20mA value will be
increased from 4.0mA to 20.0mA (in 1% of range increments at about a 1 second update rate) and then
decreased from 20.0mA to 4.0mA. The same simulation sequence is applied to the Modbus™ output gas
reading.
NOTE: Signal Output Check stays active indefinitely until the user stops the function. There
is no automatic timeout for this feature.
To end simulation mode, hold magnet over PGM1 or PGM2 for 3 seconds. The display will either move to the
prior menu item or move to the next menu item respectively.
Move to another menu item by executing a momentary hold, or, return to Normal Operation via automatic
timeout of about 15 seconds.
3.5.8
Restore Factory Defaults
Restore Factory Defaults is used to clear current user configuration and calibration data from memory and
revert to factory default values. This may be required if the settings have been configured improperly and a
known reference point needs to be re-established to correct the problem.
This menu item appears as: “Restore Defaults”.
NOTE: “Restoring Factory Defaults” should only be used when absolutely necessary. All
previously existing configurational inputs will have to be re-entered if this function is executed.
A full 10-second magnet hold on PGM 2 is required to execute this function.
From the “Restore Defaults” text scroll, hold the programming magnet over PGM2 until the “” prompt
appears and continue to hold 10 seconds. The display will scroll “Restoring Defaults”, and then will revert to
the “Restore Defaults” text scroll.
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Model TP-700
Move to another menu item by executing a momentary hold, or, return to Normal Operation via automatic
timeout of about 15 seconds (the display will scroll “Restore Defaults” 4 times and then return to Normal
Operation).
Following the execution of “Restore Defaults”, the TP-700 will revert to its factory default settings. The
default settings are:
 Serial ID = 01. The Serial ID must be set appropriately by the operator (3.5.5).
NOTE: The following must be performed in order before the sensor can be placed in operation.
 Range = 100ppm. Range must be set appropriately by the operator (3.5.4).
 AutoSpan Level = 25ppm. AutoSpan level must be set appropriately by the operator (3.5.3).
 Heater Power: Heater Power settings are lost and “Set Heater Power” (3.5.6) must be performed before
“AutoSpan”.
 AutoSpan: AutoSpan Settings are lost and a successful “AutoSpan” must be performed before placing the
Sensor into operation (3.4).
3.6 Program Features
Detcon TP-700 H2S gas sensors incorporate a comprehensive set of diagnostic features to achieve Fail-Safe
Operation. These Operational features and Failsafe Diagnostic features are detailed below.
3.6.1
Operational Features
Over-Range
When gas greater than the full-scale range is detected, the ITM display will continuously flash the full-scale
reading (20, 50, 100ppm, 200ppm). This designates an over-range condition. The 4-20mA signal will report a
22mA output during this time.
In-Calibration Status
When the sensor is engaged in AutoSpan calibration, the 4-20mA output signal is taken to 2.0mA and the incalibration Modbus™ Status Register bit 14 is set. This alerts the user that the ITM is not in an active
measurement mode. This feature also allows the user to log the AutoSpan events via their master control
system.
Sensor Life
Sensor Life is calculated after each AutoSpan calibration and is reported as an indicator of remaining service
life. It is reported in the “View Sensor Status” menu and as a RS-485 Modbus™ register bit. Sensor Life is
reported on a scale of 0-100%. When Sensor Life falls below 25%, the sensor cell should be replaced within a
reasonable maintenance schedule.
Last AutoSpan Date
This reports the number of days that have elapsed since the last successful AutoSpan. This is reported in the
View Sensor Status menu. After 180 days, an AutoSpan Fault will be declared.
3.6.2
Fault Diagnostic/Failsafe Features
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Model TP-700
Fail-Safe/Fault Supervision
Model TP-700 MicroSafe™ sensors are designed for Fail-Safe operation. If any of the diagnostic faults listed
below are active, the ITM Display will scroll the message “Fault Detected” every 30 seconds during normal
operation. At any time during “Fault Detected” mode, holding the programming magnet over PGM1 or PGM2
for 1 second will display the active fault(s). All active faults are reported sequentially.
Most fault conditions result in failed operation of the sensor. In these cases the 4-20mA signal is dropped to
the universal fault level of 0mA. These include the AutoSpan Calibration faults, Heater Fault, Sensor Fault,
Processor Fault, Memory Fault, Loop Fault, and Input Voltage Fault. (The 0mA fault level is not employed
for a Temperature Fault, or during Calibration.) For every diagnostic fault condition the associated RS-485
Modbus™ fault register will be flagged to alert the user digitally.
NOTE: Refer to the Troubleshooting Guide, Section 6, for guidance on fault conditions.
Range Fault – AutoSpan
If the sensor fails the minimum signal change criteria during AutoSpan sequence (Section 3.4), the “Range
Fault” will be declared. A “Range Fault” will cause a “Fault Detected” message to scroll once a minute on the
ITM display and drop the 4-20mA output to 0mA. The Modbus™ fault register bit for Range Fault will be set
and will not clear until the fault condition has been cleared. The sensor should be considered “Out-of-Service”
until a successful AutoSpan calibration is performed.
Stability Fault - AutoSpan
If the sensor fails the signal stability criteria during AutoSpan sequence (Section 3.4), the “Stability Fault” will
be declared. A “Stability Fault” will cause a “Fault Detected” message to scroll once a minute on the ITM
display and drop the mA output to 0mA. The Modbus™ fault register bit for Stability Fault will be set and
will not clear until the fault condition has been cleared. The sensor should be considered as “Out-of-Service”
until a successful AutoSpan calibration is performed.
Clearing Fault - AutoSpan
If the sensor fails the signal stability criteria during AutoSpan sequence (Section 3.4), the “Clearing Fault” will
be declared. A “Clearing Fault” will cause a “Fault Detected” message to scroll once a minute on the ITM
display and drop the mA output to 0mA. The Modbus™ fault register bit for Clearing Fault will be set and
will not clear until the fault condition has been cleared. The sensor should be considered as “Out-of-Service”
until a successful AutoSpan calibration is performed.
Open Heater Fault
If the sensor heater should fail and become electrically open, a “Heater Fault” will be declared. A “Heater
Fault” will cause a “Fault Detected” message to scroll once a minute on the ITM display. The Modbus™ fault
register bit for Heater Fault will be set and will not clear until the fault condition has been cleared. If a Heater
Fault occurs, the 4-20mA signal will be set at 0mA until the fault condition is resolved.
Open Sensor Fault
If the sensor film should fail and become electrically open, a “Sensor Fault” is declared. A “Sensor Fault” will
cause a “Fault Detected” message to scroll once a minute on the ITM display. The Modbus™ fault register bit
for Sensor Fault will be set and will not clear until the fault condition has been cleared. If a Sensor Fault
occurs, the 4-20mA signal will be set at 0mA until the fault condition is resolved.
TP-700 Instruction Manual
Rev. 3.5
Page 23 of 38
Model TP-700
Processor Fault
If the detector has any unrecoverable run-time errors, a “Processor Fault” is declared. A “Processor Fault”
will cause a “Fault Detected” message to scroll once a minute on the ITM display. The Modbus™ fault
register bit for Processor Fault will be set and will not clear until the fault condition has been cleared. If a
Processor Fault occurs, the 4-20mA signal will be set at 0mA until the fault condition is resolved.
Memory Fault
If the detector has a failure in saving new data to memory, a “Memory Fault” is declared. A “Memory Fault”
will cause the “Fault Detected” message to scroll once a minute on the ITM display. The Modbus™ fault
register bit for Memory Fault will be set and will not clear until the fault condition has been cleared. If a
Memory Fault occurs, the 4-20mA signal will be set at 0mA until the fault condition is resolved.
4-20mA Loop Fault
If the sensor detects a condition where the 4-20mA output loop is not functional (high loop resistance or failed
circuit function) a “4-20mA Fault” is declared. A “4-20mA Fault” will cause the “Fault Detected” message to
scroll once a minute on the ITM display. The Modbus™ fault register bit for Loop Fault will be set and will
not clear until the fault condition has been cleared. If a Loop Fault occurs, the 4-20mA signal will be set at
0mA until the fault condition is resolved. If the 4-20mA current loop is still out of tolerance, contact Detcon
at Service@detcon.com, or contact Detcon customer service.
NOTE: If the 4-20mA output is not being used, the Green wire from the sensor must be
connected to the Black wire at the (-) terminal on the Transient Protection Module to
ensure RS-485 communication is not disrupted by a 4-20mA Fault.
Input Voltage Fault
If the detector is currently receiving an input voltage that is outside of the 11.5-28VDC range, an “Input
Voltage Fault” is declared. An “Input Voltage Fault” will cause the “Fault Detected” message to scroll once a
minute on the ITM display. The fault register bit for Input Voltage Fault will be set and will not clear until the
fault condition has been cleared. If an Input Voltage Fault occurs, the 4-20mA signal will be set at 0mA until
the fault condition is resolved.
Temperature Fault
If the detector is currently reporting an ambient temperature that is outside of the –40°C to +75°C range, a
“Temperature Fault” is declared. A “Temperature Fault” will cause the “Fault Detected” message to scroll
once a minute on the ITM display. The Modbus™ fault register bit for Temperature Fault will be set and will
not clear until the fault condition has been cleared. If a Temperature Fault occurs, the 4-20mA signal remains
operational.
AutoSpan Fault
If 180 days has elapsed since the last successful AutoSpan, an AutoSpan Fault will be generated. An
“AutoSpan Fault” will cause the “Fault Detected” message to scroll once a minute on the ITM display. The
Modbus™ fault register bit for AutoSpan Reminder Fault will be set and will not clear until the fault condition
has been cleared. If an AutoSpan Reminder Fault occurs, the 4-20mA signal remains operational.
TP-700 Instruction Manual
Rev. 3.5
Page 24 of 38
Model TP-700
4. RS-485 Modbus™ Protocol
Model DM-700 sensors feature Modbus™ compatible communications protocol and are addressable via the
program mode. Other protocols are available. Contact the Detcon factory for specific protocol requirements.
Communication is two wire, half duplex 485, 9600 baud, 8 data bits, 1 stop bit, no parity, with the sensor set
up as a slave device. A master controller up to 4000 feet away can theoretically poll up to 256 different
sensors. This number may not be realistic in harsh environments where noise and/or wiring conditions would
make it impractical to place so many devices on the same pair of wires. If a multi-point system is being
utilized, each sensor should be set for a different address. Typical address settings are: 01, 02, 03, 04, 05, 06,
07, 08, 09, 0A, 0B, 0C, 0D, 0E, 0F, 10, 11…etc.
Sensor RS-485 ID numbers are factory default to 01. These can be changed in the field via the Operator
Interface described in Section 3.5.5 Set Serial ID.
The following section explains the details of the Modbus™ protocol that the DM-700 sensor supports.
Code 03 - Read Holding Registers is the only code supported by the transmitter. Each transmitter contains 6
holding registers which reflect its current status.
Table 3 Modbus™ Registers
FC
REG
Content Description
R/W
Content Definition
Meaning
Value
03
03
06
40000
40001
40001
Device Type
Read Detectable
Range1,2
Write Detectable Range
R
R/W
8
100
10000
700 Sensor
For 0-100
For 0-100002
03
40002
Read Concentration3,2
R
1000
03
06
40003
40003
Read AutoSpan Level4,2
Write AutoSpan Level
R/W
Bound by range. If > range, this
value is in fault.
Span gas at 50
03
03
40004
40005
Read Sensor Life
Read Fault Status Bits5
R
R
03
40006
Read Model #
R
85
0x0001
0x0002
0x0004
0x0008
0x0010
0x0020
0x0040
0x0080
0x0100
0x0200
0x0400
0x0800
0x1000
0x2000
0x4000
0x8000
1, 2, 3, 4, 5
03
03
40007
40008
R
R
29
400
03
40009
R
2400
24.00V
03
03/
06
40010
40011
Read Days Since Cal
4-20 Current Output
mA x100
Read Input Voltage
V x100
Read Temperature
Special #1
For 85% sensor life
Global Fault
Auto Span Fault
Temperature Fault
4-20mA Fault
Input Voltage Fault
Memory Fault
Processor Fault
Clearing Fault
Stability Fault
Range Fault
Sensor Fault
Zero Fault
Sensor Fault 2
<reserved>
In Calibration
Communication Error
DM, FP, IR, TP, PID
respectively
29days
4.00mA
28
28 °C
Function dependent on value of
40006 (See Special Register
Table 4)
TP-700 Instruction Manual
R
R/W
50
Rev. 3.5
Range
DM – 0 to 10000
FP – Read only
TP – 20, 50, 100, 200
IR – 0 to 10000
PI – 0 to 10000
DM – 1% to 95% of Range (40001)
FP – 5% to 95% of Range (40001)
TP – 2% to 50% of Range (40001)
IR – 5% to 95% of Range (40001)
PI – 1% to 95% of Range (40001)
Range
Page 25 of 38
Model TP-700
FC
REG
Content Description
R/W
Content Definition
Meaning
Function dependent on value of
40006 (See Special Register
Table 4)
Function dependent on value of
40006 (See Special Register
Table 4)
Function defendant on value of
40006 (See Special Register
Table 4)
Idle
Zero Calibration Started
Span Calibration Started
Span Set
Span Calibration Unsuccessful
Set Zero
Set Span
Signal simulation mode
Set FP Bridge Voltage
Set TP Heater Power
Set IR Gain
Two Char of Gas/Units String6
Value
03/
06
40012
Special #2
R/W
03
40013
Special #3
R
03/
06
40014
Special #4
R/W
03
40015
Calibration Status
R
06
40015
Calibration Enable
W
03
40016
0x0000
0x0001
0x0002
0x0003
0x0004
0x0001
0x0002
0x0008
0x0009
0x000A
0x000B
Range
Read Text 1, first char in
R
L
03
40017
Read Text 2
R
Two Char of Gas/Units String 6
03
40018
Read Text 3
R
Two Char of Gas/Units String 6
03
40019
Read Text 4
R
Two Char of Gas/Units String 6
03
40020
Read Text 5, last char in
R
Two Char of Gas/Units String6
H
03
40021
Text null terminator in L
R
Two Char of Gas/Units String 6
1
Integer ranges from 1 all the way to 10,000.
2
Units are determined by “units” field in the “notation” string
3
Gas Reading times one (x 1) with units in notation string for “Low Range” = 0. Gas Reading times one (x 10) with units in notation string for “Low
Range” = 1. Gas Reading times one (x 100) with units in notation string for “Low Range” = 2.
4
Span Gas must be less than or equal to Detectable Range and is usually about ½ of it.
5
Fault status bits self-reset when fault clears
6
Text in ASCII, in order L byte, H byte, L byte… See field descriptions of notation string.
Gas/Units String
Character #
Description
1
2
Units
3
4
0x20
5
6
7
8
Gas Type
9
10
11
0x00
Units – This field is ‘PPM’, ‘PPB’, or ‘_ _ %’ (where ‘ _ ‘ is a space, 0x20).
0x20 – The units filed is terminated with an ASCII space (0x20)
Gas Type – This field contains the gas type of the cell. Any ASCII string is permissible
0x00 – The notation string is terminated with an ASCII null character
Table 4 Modbus™ Special Registers
REG
40011
40012
DM (40006 = 1)
Low Range= 0, 1, 2
0: Range >25 (0 decimal place)
1: Range 10-25 (1 decimal place)
2: Range <10 (2 decimal place)
0x8XXX Positive Polarity Cell
0x0XXX Negative Polarity Cell
0xX000 Bias = 0mV
0xX096 Bias = 150mV
0xX0C8 Bias = 200mV
0xX12C Bias = 300mV
FP (40006 = 2)
Gas Factor (R/W)
Range = 79 to 565
IR (40006 = 3)
Gas Factor (R/W)
Range = 20 to 565
TP (40006 = 4) 1
Heater Power
(mW) (R/W)
Cal Factor (R/W)
Range = 79 to 565
Active Counts
Heater Voltage
(mV)
40013
1
PI (40006 = 5)
Low Range= 0, 1, 2
0: Range >25
1: Range 10-25
2: Range <10
0x8XXX
Positive
Polarity
0x0XXX
Cell
0xX000
Negative Polarity
0xX096
Cell
0xX0C8
Bias = 0mV
0xX12C
Bias = 150mV
Bias = 200mV
Bias = 300mV
Gain Code
Gain Code
Bridge Current (mA) Reference Counts
Sensor Resistance
(integer between 0 & 15)
(x100 Ω)
40014 Raw Counts 0-0xFFFF
Bridge Voltage (mV) Range Divisor
Heater Current
Raw Counts
(0x8000 = nominal 0)
1,10,100, or 1000
(mA )
(Read only)
Only possible ranges are 20, 50, 100, 200. Modbus register 40001 will contain either 20, 50, 100, or 200, range divisor is not necessary.
TP-700 Instruction Manual
Rev. 3.5
Page 26 of 38
Model TP-700
5. Service and Maintenance
5.1 Calibration Frequency
In most applications, monthly to quarterly span calibration intervals will assure reliable detection. However,
industrial environments differ. Upon initial installation and commissioning, close frequency tests should be
performed, weekly to monthly. Test results should be recorded and reviewed to determine a suitable
calibration interval. If, after 180 days, an AutoSpan Calibration is not performed, the ITM will generate an
AutoSpan Fault.
5.2 Visual Inspection
The Sensor should be inspected annually. Inspect for signs of corrosion, pitting, and water damage. During
visual inspection, the Splash Guard should be inspected to insure that it is not blocked. Examine the porous
316SS flame arrestor within the sensor’s bottom housing for signs of physical blockage or severe corrosion.
Also, inspect inside the Junction Box for signs of water accumulation or Terminal Block corrosion.
5.3 Condensation Prevention Packet
A moisture condensation packet should be installed in every explosion proof Junction Box. The moisture
condensation prevention packet will prevent the internal volume of the J-Box from condensing and
accumulating moisture due to day-night humidity changes. This packet provides a critical function and should
be replaced annually. Detcon’s PN is 960-202200-000.
NOTE: A desiccant cap with a desiccant packet is attached to the sensor cell housing to avoid
damage during storage and shipping. This prevents water from contacting the sensor film, and
as a result helps to retain the stability of the factory span calibration.
NOTE: Store the desiccant caps with the desiccant packets in a sealed container (i.e. zip-lock
bag) for future use. It is advisable (but not mandatory) to reinstall the desiccant cap and packet
during prolonged periods without power (more than 1 day is considered “prolonged”). An
active desiccant packet is blue in color and turns pink when consumed. (P/N 960-399800-000
Package of 10)
5.4 Replacement of Plug-in H2S Sensor
Splash Guard
Adapter
Plug-in Replaceable
H2S Sensor
Interconnect
Wires
detcon inc.
Housing Bottom
Locking Set-Screw
MODEL
O-Rings
TP-700
H2S Sensor
SplashGuard
Lens and LED
Display
Magnetic
Programming
Switches
Intelligent Transmitter Module (ITM)
Micro-processor controlled circuit
encapsulated in an Explosion proof
housing.
Figure 12 Sensor Assembly
TP-700 Instruction Manual
Rev. 3.5
Page 27 of 38
Model TP-700
a) Remove power to TP-700 sensor by lifting the + 24VDC wire in J-Box.
NOTE: It is necessary to remove power while changing the plug-in H2S sensor in order to
maintain area classification.
b) Use a M1.5 Allen wrench to release the locking setscrew that locks the ITM and bottom housing together
(One turn will suffice - Do not remove setscrew completely).
c) Remove splashguard. Unthread and remove the Bottom Housing from the ITM.
d) Gently pull the plug-in H2S sensor cell out of the ITM. Orient the new plug in sensor so that it matches
with the female connector pins. It may be necessary to look from below to assure alignment is correct. When
properly aligned, press the sensor in firmly to make the proper connection.
NOTE: The previous plug-in H2S sensor cell did not use a Face seal o-ring design. If you are
installing this new face seal o-ring version to replace an older revision sensor, you must fully
remove the adhesive gasket from the inside of bottom housing first
e) Thread the Bottom Housing onto the ITM to a snug fit and tighten the locking setscrew using the 1/16”
Allen wrench. Reinstall the splashguard.
f) Perform “Set Heater Power (Section 3.5.6 to match the new sensor with the ITM.
g) Perform a successful AutoSpan to match the new sensor with the ITM (Section 3.4).
5.5 Replacement of ITM
a) Remove the power source from the sensor assembly. Disconnect all sensor wire connections at the J-Box
taking note of the wire connections.
NOTE: It is necessary to remove power to the J-Box while changing the ITM in order to
maintain area classification.
b) Use a wrench and the wrench flats provided at the top section of the ITM and unthread the ITM until it can
be removed.
c) Use a M1.5 Allen wrench to release the locking setscrew that locks the ITM and bottom housing together
(One turn will suffice - Do not remove setscrew completely).
d) Remove splashguard. Unthread and remove the Bottom Housing from the ITM.
e) Gently remove the plug-in H2S sensor from the old ITM and install it in the new ITM. Orient the plug-in
sensor so that it matches with the female connector pins on the new ITM and press the sensor in firmly to
make proper connection.
f) Thread the bottom housing onto the ITM until snug, tighten the locking setscrew and reconnect splashguard.
g) Feed the sensor assembly wires through the ¾” female NPT mounting hole and thread the assembly into the
J-box until tight and the ITM lens faces toward the front access point. Connect the sensor assembly wires
inside J-Box (Refer to Section 2.6, and Figure 8).
TP-700 Instruction Manual
Rev. 3.5
Page 28 of 38
Model TP-700
h) Perform Set Range, Set Serial ID, Set Heater Power, Set AutoSpan Level and perform a successful
AutoSpan before placing sensor assembly into operation.
5.6 Replacement of TP-700 Sensor Assembly
a) Remove the power source from the sensor assembly. Disconnect all sensor wire connections at the J-Box .
NOTE: It is necessary to remove power to the J-Box while changing the TP-700 sensor in
order to maintain area classification.
b) Use a wrench and the wrench flats provided at the top section of the ITM and unthread the ITM until it can
be removed.
c) Use a M1.5 Allen wrench to release the locking setscrew that locks the ITM and bottom housing together
(One turn will suffice - Do not remove setscrew completely).
d) Remove splashguard. Unthread and remove the Bottom Housing from the ITM.
e) Feed the new TP-700 sensor assembly wires through the ¾” female NPT mounting hole and thread the
assembly into the J-box until tight and the ITM lens faces toward the front access point. Connect the sensor
assembly wires inside J-Box (Refer to Section 2.6, and Figure 8).
f) TP-700 sensors are factory calibrated, however, they require an initial AutoSpan calibration (section 3.4),
and must be configured per customer specific application requirements.
5.7 Replacement of the Bottom Housing
NOTE: If the porous Flame Arrestor becomes blocked, corroded, or compromised the Bottom
Housing must be replaced because the Flame Arrestor is bonded to the housing.
a) Remove the splashguard.
b) Use a M1.5 Allen wrench to release the locking setscrew that holds the ITM and bottom housing together
(One turn will suffice - Do not remove the setscrew completely). Grab the knurled section of the bottom
housing and unthread until removed.
c) Thread up the bottom housing until snug, reconnect the splashguard, and tighten the locking setscrew.
d) Re-install the splashguard.
e) It is advised to perform an AutoSpan Calibration after replacing the Bottom Housing (section 3.4
Calibration Mode (AutoSpan)).
TP-700 Instruction Manual
Rev. 3.5
Page 29 of 38
Model TP-700
6. Troubleshooting Guide
Refer to the list of Failsafe Diagnostic features listed in Section 3.6.2 for additional reference in
troubleshooting activities. Listed below are some typical trouble conditions and their probable cause and
resolution path.
Figure 13 Sensor PCB
Open Heater
Probable Cause: Plug-in sensor has failed


Remove plug-in H2S sensor and verify resistance between PIN 2 and PIN 3 (Shown in Figure 13)
using an ohmmeter. At room temperature, the heater film’s normal reading should range between 65
and 95 ohms.
Replace the plug-in H2S sensor if open circuit or significantly out-of range readings are found.
Open Sensor
Probable Cause: Plug-in sensor has failed


Remove plug-in H2S sensor cell and verify resistance between PIN 6 and PIN 7 (Shown in Figure 13)
using an ohmmeter. At room temperature, the sensor film’s normal reading range should be 10-100 kohms. For sensors with an “X” in the serial number, the normal reading range should be 75 k-ohms to
2 meg-ohms. Failure would be open circuit.
Replace the plug-in H2S sensor cell if an open circuit found.
AutoSpan Calibration Faults – (Range, Stability and Clearing)
To clear any AutoSpan Calibration fault, the AutoSpan process must be completed successfully (Section3.4).
Range Fault
Probable Causes: Failed Sensor, Cal Gas not applied or not applied at appropriate time, problems w/ cal gas
and delivery, no Humidifying Tube used, failure to properly desiccant packet the sensor cell during extended
power-off periods.





Check Heater Power Setting (should be 235 +/- 5mW at 25ºC ambient temperature).
Verify use of span gas Humidifying Tube.
If using Splashguard with Integral Cal Port, must use Calibration Wind Guard or air movement can
compromise span gas delivery.
Check validity of span gas using H2S pull tube or other means (check MFG date on cal gas cylinder).
Check for obstructions through stainless steel flame arrestor (including being wet, blocked, or
corroded).
TP-700 Instruction Manual
Rev. 3.5
Page 30 of 38
Model TP-700

Replace the plug-in H2S sensor.
Stability Fault
Probable Causes: Failed Sensor, empty or close to empty Cal Gas Cylinder, problems with cal gas and
delivery, or no Humidifying Tube used, failure to properly desiccant packet the sensor cell during extended
power-off periods.






Check Heater Power Setting (should be 235 +/- 5mW at 25ºC ambient temperature).
Verify use of span gas Humidifying Tube.
If using Splashguard with Integral Cal Port, must use Calibration Wind Guard or air movement can
compromise span gas delivery.
Check validity of span gas using H2S pull tube or other means (check MFG date on cal gas cylinder).
Check for obstructions through stainless steel flame arrestor (including being wet, blocked, or
corroded).
Replace the plug-in H2S sensor.
Clearing Fault
Probable Causes: Failed Sensor, Cal Gas not removed at appropriate time or problems with cal gas and
delivery, presence of background H2S, or incorrect Heater Power Setting.







Must recover to < 5ppm in < 5 min after AutoSpan is complete
Use bottled air (zero air) if there is a known continuous H2S background level.
Verify use of span gas Humidifying Tube.
Check validity of span gas using H2S pull tube or other means (check MFG date on cal cylinder).
Check for obstructions through stainless steel flame arrestor (including being wet, blocked, or
corroded).
Perform Heater Power Setting.
Replace the plug-in H2S sensor.
Poor Calibration Repeatability
Probable Causes: Failed Sensor, use of wrong Cal Gas or problems w/ cal gas and delivery, or Interference
Gases








Check for adequate Sensor Life.
Check Heater Voltage Setting (should be 235±5mW at 25ºC).
Verify use of span gas Humidifying Tube.
Check validity of cal gas using H2S pull tube or other means (check MFG date on cal cylinder).
Check for obstructions through stainless flame arrestor (including being wet, blocked, or corroded).
Evaluate area for presence of any contaminating gases as listed in Section 2.3.
Note the sensor’s serial # and report repetitive problems to Detcon’s Repair Department.
Replace plug-in H2S sensor cell.
Unstable Output/ Sudden spiking
Possible Causes: Unstable power supply, inadequate grounding, or inadequate RFI protection




Verify Power source is stable.
Verify field wiring is properly shielded and grounded.
Contact Detcon to optimize shielding and grounding.
Add Detcon’s RFI Protection Circuit accessory if problem is proven RFI induced.
TP-700 Instruction Manual
Rev. 3.5
Page 31 of 38
Model TP-700
Nuisance Alarms




Check condulet for accumulated water and abnormal corrosion on terminal blocks.
If nuisance alarms are happening at night, suspect condensation in condulet. Add or replace Detcon’s
Condensation Prevention Packet P/N 960-202200-000.
Investigate the presence of other target gases that are causing cross-interference signals.
Determine if cause is RFI induced.
Processor and/or Memory Faults



Recycle power in attempt to clear problem
Restore Factory Defaults - This will clear the processor’s memory and may correct problem.
Remember to re-enter all customer settings for range and cal gas level after Restore Factory Defaults.
If problem persists, replace the Intelligent Sensor Module.
Unreadable Display

If due to excessive sunlight, install a sunshade to reduce glare.
Nothing Displayed – Transmitter not Responding



Verify condulet has no accumulated water or abnormal corrosion.
Verify required DC power is applied to correct terminals.
Swap with a known-good ITM to determine if ITM is faulty.
Faulty 4-20mA Output
If Sensor has a normal reading with no Faults displayed, and the 4-20 mA signal output is 0mA….





Check that wiring is properly connected at terminal blocks and through to controller inputs.
The 4-20mA output loop must be closed to avoid a Loop Fault. If the 4-20mA output is not being
used the green wire from the sensor must be connected to the (-) terminal on the Transient Protection
Module to ensure that it does not create a 4-20mA Fault. (section 2.6 Field Wiring)
Perform a “Signal Output Check” sequence via Section 3.5.7 and verify 4-20mA output with Current
Meter.
Swap with new ITM to determine if the ITM’s 4-20mA output circuit is faulty.
If the 4-20mA current loop is still out of tolerance, contact Detcon at Service@detcon.com, or contact
Detcon customer service.
No Communication - RS-485 Modbus™
If sensor has a normal reading with no Faults displayed and the Modbus™ is not communicating….
 Verify that the correct (and non-duplicated) serial address is entered (per Section 0).
 Check that the wiring is properly connected at terminal blocks, and the serial loop is wired correctly.
 Perform a “Signal Output Check” per Section 3.5.7 and troubleshoot wiring.
 Consider adding a Modbus™ repeater if the distance from the nearest distribution drop is excessive.
 Swap with new ITM to determine if the ITM’s serial output circuit is faulty.
 Refer to Detcon’s “Guide to Proper Modbus™ Communications” Application Note.
TP-700 Instruction Manual
Rev. 3.5
Page 32 of 38
Model TP-700
7. Customer Support and Service Policy
Detcon Headquarters
Shipping Address: 4055 Technology Forest Blvd., The Woodlands Texas 77381
Mailing Address: P.O. Box 8067, The Woodlands Texas 77387-8067
Phone: 888.367.4286, or 281.367.4100
Fax: 281.292.2860
• www.detcon.com
• service@detcon.com
• sales@detcon.com
All Technical Service and Repair activities should be handled by the Detcon Service Department via phone,
fax or email at contact information given above. RMA numbers should be obtained from the Detcon Service
Department prior to equipment being returned. For on-line technical service, customers should have ready the
model number, part number, and serial number of product(s) in question.
All Sales activities (including spare parts purchase) should be handled by the Detcon Sales Department via
phone, fax or email at contact information given above.
7.1 Warranty Notice
Detcon Inc. warrants the Model TP-700 H2S gas sensor to be free from defects in workmanship of material
under normal use and service for two years from the date of shipment on the ITM electronics and for a 10 year
conditional period on the plug-in H2S sensor. See Warranty details in section 8 TP-700 Sensor Warranty.
Detcon Inc. will repair or replace without charge any such equipment found to be defective during the
warranty period. Full determination of the nature of, and responsibility for, defective or damaged equipment
will be made by Detcon Inc. personnel.
Defective or damaged equipment must be shipped to the Detcon Inc. factory or representative from which the
original shipment was made. In all cases this warranty is limited to the cost of the equipment supplied by
Detcon Inc. The customer will assume all liability for the misuse of this equipment by its employees or other
contracted personnel.
All warranties are contingent upon the proper use in the application for which the product was intended and
does not cover products which have been modified or repaired without Detcon Inc. approval, or which have
been subjected to neglect, accident, improper installation or application, or on which the original identification
marks have been removed or altered.
Except for the express warranty stated above, Detcon Inc. disclaims all warranties with regard to the products
sold. Including all implied warranties of merchantability and fitness and the express warranties stated herein
are in lieu of all obligations or liabilities on the part of Detcon Inc. for damages including, but not limited to,
consequential damages arising out of, or in connection with, the performance of the product.
TP-700 Instruction Manual
Rev. 3.5
Page 33 of 38
Model TP-700
8. TP-700 Sensor Warranty
8.1 Plug-in H2S Sensor Warranty
Detcon Inc. warrants, under normal intended use, each new plug-in H2S sensor (PN 370-010000-700) for a ten
year period under the conditions described as follows: The warranty period begins on the date of shipment to
the original purchaser and ends ten years thereafter. The sensor element is warranted to be free of defects in
material and workmanship. Should any sensor fail to perform in accordance with published specifications
within the warranty period, return the defective part to Detcon, Inc., 4055 Technology Forest Blvd., The
Woodlands, Texas 77381, for necessary repairs or replacement.
First 5 years
6th year
7th year
8th year
9th year
10th year
Non-warranty
$35.00 handling charge
$78.00 handling charge
$121.00 handling charge
$164.00 handling charge
$208.00 handling charge
$251.00 handling charge
$295.00 charge
NOTE: The warranty will not be honored if evidence shows that the sensor cell was damaged
by moisture exposure due to improper handling and protection during periods of removed
power or storage. The sensor cell must be protected during periods of removed power or
storage by use of a Dust Cap (P/N 602-003306-0TP) and a Desiccant Packet (P/N 960-240010000).
Terms & Conditions
 The original serial number must be legible on each sensor element base.
 Shipping point is FOB the Detcon factory.
 Net payment is due within 30 days of invoice.
 Detcon, Inc. reserves the right to refund the original purchase price in lieu of sensor replacement.
8.2 ITM Electronics Warranty
Detcon Inc. warrants, under intended normal use, each new Model 700 ITM to be free from defects in material
and workmanship for a period of two years from the date of shipment to the original purchaser. All warranties
and service policies are FOB the Detcon facility located in The Woodlands, Texas.
8.3 Terms & Conditions




The original serial number must be legible on each ITM.
Shipping point is FOB the Detcon factory.
Net payment is due within 30 days of invoice.
Detcon, Inc. reserves the right to refund the original purchase price in lieu of ITM replacement.
TP-700 Instruction Manual
Rev. 3.5
Page 34 of 38
Model TP-700
9. Appendix
9.1 Specifications
Sensor Type:
Continuous diffusion/adsorption type
CHEMFET Solid State MOS type
True plug-in replaceable type
Sensor Life:
5-10 years typical
Measuring Ranges:
0-20ppm, 0-50ppm, 0-100ppm
Accuracy/ Repeatability:
± 10% of reading or ± 2ppm (whichever is greater)
Response Time:
T50 < 30 seconds, T80 < 60 seconds
Outputs
Linear 4-20mA DC
RS-485 Modbus™ RTU
Electrical Classification:
Explosion Proof
CSA and US (NRTL)
Class I, Division 1, Groups B, C, D (Tamb=-40° to 75°C)
Class I, Zone I, Group IIB+H2
ATEX
EEx d IIB+H2 T4 (Tamb=-40° tp 75°C)
Ingress Protection
NEMA 4X, IP66
Safety Approvals:
cCSAus Complies with ISA92.0.01 Part 1-1998; Performance Requirements
for H2S
ATEX
CE Marking
SIL2 FMEDA Rating
Warranty:
Sensor – 10 year conditional
Transmitter – 2 years
Environmental Specifications
Operating Temperature:
-40°F to +167°F; -40°C to +75°C
FM ISA 92.0.01 Certified from -40°C to +65°C for H2S
Storage Temperature:
-31°F to +131°F; -35°C to +55°C
Operating Humidity:
5-100% RH (Non-condensing)
Operating Pressure Range:
Atmospheric ± 10%
Mechanical Specifications
Dimensions
TP-700 Instruction Manual
7"H x 2.2" Dia.; 178mmH x 65mm Dia. (sensor assembly only)
Rev. 3.5
Page 35 of 38
Model TP-700
11"H x 6.1"W x 3.75"D; 280mmH x 155mmW x 96mmD (with junction box)
Mounting holes (J-box) 5.5"; 140mm center to center
Weight:
2 lbs; 0.907kg (sensor only)
6 lbs; 2.72kg (w/aluminum j-box)
9 lbs; 4.08kg (w/stainless steel j-box)
Electrical Specifications
Input Voltage:
11-30 VDC
Power Consumption:
Normal operation = 68mA (<1.7 watt)
Maximum = 85mA (2 watts)
Inrush current:
1.0A @ 24V
RFI/EMI Protection:
Complies with EN61000
Analog Output:
Linear 4-20mA DC current (1000 ohms maximum loop load @ 24VDC)
0mA
All Fault Diagnostics
2mA
In-Calibration
4-20mA
0-100% full-scale
22mA
Over-range condition
Serial Output:
RS-485 Modbus™ RTU
Baud Rate:
9600 BPS (9600,N,8,1 Half Duplex)
Status Indicators:
4-digit LED Display with gas concentration
full-script menu prompts for AutoSpan,
Set-up Options, and Fault Reporting
Faults Monitored:
Heater, Loop, Input Voltage, Sensor, Processor, Memory, Calibration
Cable Requirements:
Power/Analog: 3-wire shielded cable
Maximum distance is 13,300 feet with 14 AWG
Serial Output: 2-wire twisted-pair shielded cable specified for RS-485 use
Maximum distance is 4,000 feet to last sensor
I/O Protection:
TP-700 Instruction Manual
Over-Voltage, Miss-wiring, EMI/RFI Immunity
Rev. 3.5
Page 36 of 38
Model TP-700
9.2 Spare Parts, Sensor Accessories, Calibration Equipment
Part Number
927-015500-100
602-003280-000
370-010000-700
500-003087-100
602-003306-0TP
960-202200-000
960-240010-000
Spare Parts
TP-700 Intelligent Sensor Module (ITM)
TP 700 Housing Bottom Assembly (includes Flame Arrestor)
Replacement Plug-in H2S sensor
Transient Protection PCA
Dust Cap 1.5" Thread with Desiccant Pack
Condensation Prevention Packet (for J-Box replace annually)
Desiccant Protection Packet for Cell
Sensor Accessories
897-850800-010
897-850400-010
897-850801-316
897-850401-316
613-120000-700
602-003306-0TP
943-002273-000
327-000000-000
960-202200-000
960-240010-000
NEMA 7 Aluminum Enclosure less cover – 3 port
NEMA 7 Aluminum Enclosure Cover (Blank)
NEMA 7 316SS Enclosure less cover – 3 port
NEMA 7 316SS Enclosure Cover (Blank)
Sensor Splashguard with integral Cal-Port
Dust Cap 1.5" Thread with Desiccant Pack
Hazardous location dust guard
Programming Magnet
Condensation Prevention Packet (for J-Box replace annually)
Desiccant Protection Packet for Cell
Calibration Accessories
943-000000-000
985-241100-321
943-000006-132
943-020000-000
942-010112-010
942-010112-025
943-090005-502
943-000GMI-CAP
Calibration Wind Guard
In-Line Humidifying Tube
Threaded Calibration Adapter
Span Gas Kit: Includes calibration adapter, In-Line Humidifying
Tube, 200cc/min fixed flow regulator, and carrying case.
(Does Not include gas).
Span Gas cylinder: 10ppm H2S in air (for 20ppm range)
Contains 58 liters of gas and is good for 80 calibrations
Span Gas cylinder: 25ppm H2S in air (for 50 and 100ppm ranges).
Contains 58 liters of gas and is good for 80 calibrations
200cc/min Fixed Flow Regulator for span gas bottle
TP-700 Adapter Cover used with General Monitors glass ampoule
breaking cup.
Recommend Spare Parts for 2 Years
927-015500-100
602-003280-000
370-010000-700
500-003087-100
960-202200-000
TP-700 Instruction Manual
TP-700 Intelligent Sensor Module (ITM)
Housing Bottom Assembly (includes Flame Arrestor)
Replacement Plug-in H2S sensor
Transient Protection PCA
Condensation prevention packet (for J-Box replace annually)
Rev. 3.5
Page 37 of 38
Model TP-700
9.3 Model TP-700 Engineering Drawings
1) TP-700 Series Breakaway and Wiring
2) TP-700 Series Wiring and Dimensional, 316 SS condulet
3) TP-700 Series Wiring and Dimensional, Aluminum condulet
10. Revision Log
Revision
2.3
2.4
2.5
2.6
2.7
2.8
2.9
3.0
3.1
3.2
3.3
3.4
3.5
Date
Changes made
12/16/2008 Previous revision.
04/25/2011 Removed Teflon note in Section 2.5. Added Revision Log
Section 10.
07/11/2011 Added inrush current information to Specifications section.
Addend wiring and dimensional drawing for aluminum condulet
04/16/2012 Changed the use of cable type, made changes to the Modbus
Register Map.
08/07/2012 Updated spare parts list, corrected specifications
01/07/2013 Updated ATEX approvals label, updated EN standards that
sensor assembly meets. Updated ATEX listing in Specifications
04/02/2013 Updated ATEX installation instructions regarding use of ring
terminal for earth ground using screw and lock-washer. Updated
guidelines for metric special fasteners used in 700 assembly
10/25/13 Updated for 4-20mA errors
11/20/13 Correct Modbus™ Register Map
12/19/13 Update Calibration to include Wind Guard
02/28/14 Update 4-20mA wiring, and specifications
03/07/14 Add notation on use of desiccant pack with sensor cell
08/07/14 Updated Calibration Section
Approval
N/A
LU
LU
LU
BM
BM
BM
LU
LU
BM
BM
BM
BM
Shipping Address: 4055 Technology Forest Blvd., The Woodlands Texas 77381
Mailing Address: P.O. Box 8067, The Woodlands Texas 77387-8067
Phone: 888.367.4286, 281.367.4100 • Fax: 281.292.2860 • www.detcon.com • sales@detcon.com
TP-700 Instruction Manual
Rev. 3.5
Page 38 of 38
NA
A
JOB NO.
SIZE
3150-1
6
DRAWING NO.
REV
Sensor Wiring
to Junction Box
Intelligent
Transmitter
Module
(ITM)
Customer
Supplied Wiring (In)
Transient Protection Module
(TPM) P/N 500-003087-100
Power from and 4-20mA
out to Control Device
detcon inc.
MODEL
TP-700
Customer
Supplied Wiring
(Out to next Device)
Explosion
Proof
Junction Box
Power to next Device
(+)
(-)
(+)
(-)
mA
mA
A(+)
B(-)
A(+)
B(-)
Modbus RS-485 to
next Device
Modbus RS-485 to
Host Control Device
Install a 100-250 Ohm
resistor if the 4-20mA
output is not used
Blu
Wht
A(+)
B(-)
Remove Housing Bottom
from ITM to access
Plug-in Sensor
(+)
(-)
Plug-in
Sensor
mA
Housing Bottom
Locking Set-Screw
Red
Blk
Grn
H2S Sensor
Ground Points
Earth-Ground connection
is made via 6-32
mounting holes.
Wiring to
Sensor Assembly
Housing Bottom
Assembly
602-003152-000
O-Rings
6-32 threaded
Ground point
Splash Guard
613-120000-700
NOTES:
detcon, inc.
CLIENT:
P.O. NO.
REQ. NO.
PROJECT NO.
SERIAL NO.
PLANT:
NA
NA
NA
NA
NA
The information and technical data disclosed by
this document may be used and disseminated
only for the purposes and to the extent
specifically authorized by Detcon Incorporated
in writing. Such information and technical data
are proprietary to Detcon Incorporated and may
not be used or disseminated except as provided
in the foregoing sentence.
6
10/25/13
Change Splashguard and Housing
5
06/25/10
Add drawing for Aluminum Condulet
4
01/14/08
3
04/01/07
2
11/28/06
Rev
DATE
RH
SF
BM
3168
NA
PROJECT:
BM
3168
Updates
Removed yellow wire
SF
SF
BM
3168
Updates
NA
TPM Changed
RH
EM
BM
3168
Updates
DRAWN BY:
Correct pinout on TPM
RH
EM
BM
3168
Updates
DWG #
SUBJECT
DESCRIPTION
DRN
CHKD APPD
REF. DWGS
TP-700 Series
Breakaway and Wiring
_
Updates
RH
RH
REVISION HISTORY
3200 Research Forest Dr. A-1 * The Woodlands Texas 77381 * www.detcon.com
R HUTSKO
FIRST ISSUE:
03/30/06
SCALE
NTS
SALES ORDER NO.
NA
SHEET NUM.
NA
DRAWING NO.
3150-1
SIZE REV
A
6
Model TP-700
This page left intentionally blank
Shipping Address: 4055 Technology Forest Blvd., The Woodlands Texas 77381
Mailing Address: P.O. Box 8067, The Woodlands Texas 77387-8067
Phone: 888.367.4286, 281.367.4100 • Fax: 281.292.2860 • www.detcon.com • sales@detcon.com
TP-700 Instruction Manual
Rev. 3.5
Page 39 of 39
"T"
3
Mounting Holes
5.5"
5"
Explosion Proof Housing
Junction-Box
(Detcon's J-Box Shown)
4.9"
7.2"
Ø0.265"
Mounting Hole
3
4" NPT Fitting
Plug unused ports
5.25"
8-32 Threaded
Ground Point
6-32 threaded
Ground Point
_
ITM
NA
NTS
SCALE
NA
SHEET NUM.
NA
SALES ORDER NO.
A
6
SIZE REV
3150-2
DRAWING NO.
TP-700 Series
Wiring, Dimensional,
and Mounting
3200 Research Forest Dr. A-1 * The Woodlands Texas 77381 * www.detcon.com
Use Spacers to move
12.45"
the J-Box and Sensor
Assembly away from the
wall at least 0.25-0.5" to
allow access to Sensor
detcon, inc.
CLIENT:
PROJECT:
NA
R. Hutsko
DRAWN BY:
03/30/06
FIRST ISSUE:
mounting surface)
NPT Fitting
NPT Fitting
MODEL
detcon inc.
TP-700
H 2S Sensor
2.115"
2"
Updates
RH
3168
Change Splashguard and Housing
BM
10/25/13
SF
6
Updates
RH
RH
3168
Add drawing for Aluminum Condulet
BM
06/25/10
EM
SF
SF
5
EM
Updates
RH
Updates
RH
Updates
TPM Changed
Removed yellow wire
3168
Correct pinout on TPM
3168
01/14/08
3168
04/01/07
BM
11/28/06
BM
4
BM
3
SUBJECT
REF. DWGS
DWG #
CHKD APPD
2
REVISION HISTORY
DRN
DATE
DESCRIPTION
Rev
Spacer
EYS Seal Fitting
4"
4"
Ø0.265"
Mounting Hole
3
TP-700 Inteligent
Transmitter Module
(ITM)
Housing Bottom
Splash Guard
The information and technical data disclosed by
this document may be used and disseminated
only for the purposes and to the extent
specifically authorized by Detcon Incorporated
in writing. Such information and technical data
are proprietary to Detcon Incorporated and may
not be used or disseminated except as provided
in the foregoing sentence.
Wall (or other
JOB NO.
Conduit
Drain
NA
NA
NA
NA
NA
Install a 100-250 Ohm
resistor if the 4-20mA
output is not used
Recommended Electrical
Installation Method
Explosion
Proof
Junction Box
Wiring to
Sensor Assembly
P.O. NO.
REQ. NO.
PROJECT NO.
SERIAL NO.
PLANT:
Mounting
Bolt
NA
A
SIZE
3150-2
DRAWING NO.
Customer
Supplied Wiring
(+)
(-)
mA
N/U
A(+)
B(-)
Blu
Wht
Transient Protection Module
(TPM) P/N 500-003087-100
Mount TPM in Explosion Proof
Enclosure to ground unit
properly. Mount to bottom of
enclosure using 6-32 screws.
A(+)
B(-)
If the Sensor is not mechanically
grounded to the Junction Box, and
external ground strap should be used
to insure proper grounding.
NOTES:
mA
Red
Blk
Grn
(+)
(-)
6
REV
Model TP-700
This page left intentionally blank
Shipping Address: 4055 Technology Forest Blvd., The Woodlands Texas 77381
Mailing Address: P.O. Box 8067, The Woodlands Texas 77387-8067
Phone: 888.367.4286, 281.367.4100 • Fax: 281.292.2860 • www.detcon.com • sales@detcon.com
TP-700 Instruction Manual
Rev. 3.5
Page 39 of 39
NA
JOB NO.
A
SIZE
3150-3
6
DRAWING NO.
REV
5.5"
5.2"
3
3.95"
NPT Port
Plug unused ports
Detcon's Aluminum
Explosion Proof
Junction-Box
(Condulet)
4"
5.825"
8-32 Threaded
Ground Point
Ø0.275"
Mounting
Hole
6-32 Threaded
Ground Point
13" Typ
detcon inc.
4.9"
MODEL
TP-700
Sensor Assembly
H2S Sensor
0.3" Typ
Splash Gaurd
2"
NOTES:
detcon, inc.
CLIENT:
P.O. NO.
REQ. NO.
PROJECT NO.
SERIAL NO.
PLANT:
NA
NA
NA
NA
NA
The information and technical data disclosed by
this document may be used and disseminated
only for the purposes and to the extent
specifically authorized by Detcon Incorporated
in writing. Such information and technical data
are proprietary to Detcon Incorporated and may
not be used or disseminated except as provided
in the foregoing sentence.
6
10/25/13
Change Splashguard and Housing
RH
SF
BM
3168
NA
PROJECT:
06/25/10
Add drawing for Aluminum Condulet
Updates
Removed yellow wire
SF
SF
3168
01/14/08
RH
RH
BM
4
BM
3168
Updates
NA
3
04/01/07
TPM Changed
RH
EM
BM
3168
Updates
DRAWN BY:
2
11/28/06
Correct pinout on TPM
RH
EM
BM
3168
Updates
DWG #
SUBJECT
DATE
DESCRIPTION
REVISION HISTORY
DRN
CHKD APPD
REF. DWGS
FP-700 Series
with Detcon Aluminum
Junction-Box
_
Updates
5
Rev
3200 Research Forest Dr. A-1 * The Woodlands Texas 77381 * www.detcon.com
R HUTSKO
FIRST ISSUE:
06/25/10
SCALE
NTS
SALES ORDER NO.
NA
SHEET NUM.
NA
DRAWING NO.
3150-3
SIZE REV
A
6
Model TP-700
This page left intentionally blank
Shipping Address: 4055 Technology Forest Blvd., The Woodlands Texas 77381
Mailing Address: P.O. Box 8067, The Woodlands Texas 77387-8067
Phone: 888.367.4286, 281.367.4100 • Fax: 281.292.2860 • www.detcon.com • sales@detcon.com
TP-700 Instruction Manual
Rev. 3.5
Page 39 of 39
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