General Monitors | Instruction manual | S4000C Combustible Gas Detector Manual
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Model S4000C
Intelligent Sensor for
Combustible Gas Detection
The information and technical data disclosed in this document may be used and disseminated only for the purposes and to the extent specifically authorized in writing by General
Monitors.
General Monitors reserves the right to change published specifications and designs without prior notice.
MANS4000C
No. MANS4000C
Revision G/03-07
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S4000C
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S4000C
Table of Contents
Terminal Block TB2 – Power and Signal Connections .................................................7
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S4000C
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S4000C
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S4000C
Table of Figures
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Table of Tables
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S4000C
Quick Start Guide
Mounting and Wiring
Tools Required
1. “5mm” Allen head wrench to remove enclosure lid (included with gas detector).
2. Flat-head screwdriver maximum 3/16” (5 mm) width for terminal block connections
(included with gas detector).
3. Adjustable wrench for conduit or cable gland connections (not included).
It is not necessary to seal the Model S4000C housing to maintain its explosion-proof integrity; however, conduit runs containing wires attached to the Model S4000C’s relay contacts must be sealed.
Information on Class I location seals can be found in the NEC, Article 501-5.
Figure 1: Outline and Mounting Dimensions
Terminal Connections
The terminal blocks (TB) are located inside the housing and can be accessed by removing the cover. A label on the inside of the housing cover provides details of all the terminal connections.
WARNING: Do not connect +24VDC to TB1. Damage to the electronics, or sensor may result.
It is recommended that a three-wire (red, black, white) shielded cable be used for making power and output signal connections on the Model S4000C. The Spring Type terminal block accepts 14 AWG to 20 AWG and the Screw Type terminal block accepts 12 AWG to 18 AWG stranded or solid wire. Each wire should be stripped before wiring the Model S4000C Intelligent
Sensor. To connect wiring to the Spring Type terminal block, insert a screwdriver into the
orange tab and press down (Figure 2), opening the terminal. Insert the wire into the terminal
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S4000C
and release the orange tab, clamping the wire in the terminal. Check the hold of the wire by
GENTLY tugging it to ensure it is locked in.
To connect wiring to the Screw Type terminal block, (Figure 3) use a screwdriver to loosen the
top screw counter clock wise. Insert the wire into the terminal and tighten the top screw clock wise. Check the hold of the wire by GENTLY tugging it to ensure it is locked in.
Figure 2: Spring Type Terminal Block Operation
Figure 3: Screw Type Terminal Block Operation
NOTE: Power must remain disconnected until all other wiring connections have been made.
The maximum distance between the Model S4000C and the power supply is 3430 feet or 1040
meters (each cable run should be as short as possible). See Section 9.3.3 for cable length
specifications. Connect +24VDC to TB2, position 9. Connect the ground or common to TB2, position 8.
The instrument is now ready to operate. Please consult the manual for more information on the instrument’s many features.
NOTE: If you have any problems in the set-up or testing of the detector, please refer to the
“Trouble Shooting Section”, or call the factory direct.
2
Worldwide service is available by calling:
Lake Forest, California
(24 hr. service)
Houston, Texas
Ireland
Singapore
United Arab Emirates
United Kingdom
Toll Free: +1-800-446-4872
Phone: +1-949-581-4464
Fax: +1-949-581-1151
Phone: +1-281-855-6000
Fax: +1-281-855-3290
Phone: +353-91-751175
Fax: +353-91-751317
Phone: +65-6748-3488
Fax: +65-6748-1911
Phone: +971-4-8815751
Fax: +971-4-8817927
Phone: +44-1625-619583
Fax: +44-1625-619098
S4000C
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S4000C
1.0 Introduction
1.1 Protection for Life
General Monitors’ mission is to benefit society by providing solutions through industry leading safety products, services, and systems that save lives and protect capital resources from the dangers of hazardous flames, gases, and vapors.
This manual provides instruction for installing and operating General Monitors’ Model S4000C for Combustible Gas Detection. While the S4000C is easy to install and operate, this manual should be read in full and the information contained herein understood before attempting to place the system in service.
The safety products you have purchased should be handled carefully and installed, calibrated, and maintained in accordance with the respective product instruction manual. Remember these products are for your safety.
1.2 Special Warnings
The Model S4000C Intelligent Sensor contains components, which can be damaged by static electricity. Special care must be taken when wiring the system to ensure that only the connection points are touched.
Toxic, combustible and flammable gases and vapors are very dangerous. Extreme caution should be used when these hazards are present.
1.3 System Integrity Verification
Commissioning Safety Systems
Before power up, verify wiring, terminal connections and stability of mounting for all integral safety equipment including, but not limited to:
• Power supplies
• Control modules
• Field detection devices
• Signaling / output devices
• Accessories connected to field and signaling devices
After the initial application of power (and any factory specified warm-up period) to the safety system, verify that all signal outputs, to and from devices and modules, are within the manufacturers’ specifications. Initial testing should be performed per the manufacturers’ recommendations and instructions.
Proper system operation should be verified by performing a full, functional test of all component devices of the safety system, ensuring that the proper levels of alarming occur.
Fault/Malfunction circuit operation should be verified.
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S4000C
Periodic Testing of Field Devices
Periodic testing/calibrating should be performed per the manufacturer’s recommendations and instructions. Testing/Calibrating procedures should include, but not be limited to:
• Verify integrity of all optical surfaces and devices
• For flame detectors, use the appropriate test lamp
When testing produces results outside of the manufacturer’s specifications, replacement of the suspect device(s) should be performed as necessary. Maintenance intervals should be independently established through a documented procedure, including a maintenance log maintained by plant personnel or third party testing services.
Periodic System Verification
The following system verifications should be performed at least annually:
Verify wiring, terminal connections and stability of mounting for all integral safety equipment including, but not limited to:
• Power supplies
• Control modules
• Field detection devices
• Signaling / output devices
• Accessories connected to field and signaling devices
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S4000C
2.0 Product Description
2.1 General Description
The Model S4000C is an intelligent sensor for the detection of combustible gases and vapors.
The microprocessor-based electronics processes information at the sensor site, within an explosion-proof housing.
A digital display provides indications and display codes that can be viewed through a window in the cover. A red LED above the digital display signifies an ALARM condition, while a red LED below the digital display signifies a WARN condition. Analog signal (4-20mA) and optional Dual
Redundant MODBUS communications and relays, provide remote and/or discrete indications of the sensor’s operation.
The Model S4000C Intelligent Sensor is rated explosion-proof for use in the following hazardous areas:
• CSA/FM: Class I, Division 1, Groups B, C, D and Class I, Zone 1, Ex d IIB+H
2
, T6
• ATEX: II 2 G EEx d IIB T5 (Tamb=-40°C to +70°C) EN 61779-1
Figure 4: Model S4000C Intelligent Sensor
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S4000C
3.0 Installation
3.1 Receipt of Equipment
All equipment shipped by General Monitors is pre-packed in shock absorbing containers, which provide protection against physical damage (original containers should be kept for future shipping or storage needs).
Shipping container contents should be carefully removed and checked against the packing list.
If any damage has occurred, or there is any discrepancy in the order, please notify General
Monitors as soon as possible.
All correspondence with General Monitors must specify the equipment part number and serial number.
The factory tests each unit; however, a complete system checkout is suggested upon initial installation to ensure system integrity.
WARNING: Installation and Maintenance must be carried out by suitably skilled and competent personnel only.
3.2 Tools Required
1. “5 mm” Allen head wrench to remove enclosure lid (included with gas detector).
2. Flat-head screwdriver maximum 3/16” (5 mm) width for terminal block connections
(included with gas detector).
3. Adjustable wrench for conduit or cable gland connections (not included).
3.3 Choosing Product Locations
There are no standard rules for sensor placement, since the optimum sensor location is different for each application. The customer must evaluate conditions at the facility to make this determination. Generally, the Model S4000C Intelligent Sensor should be easily accessible for calibration checks.
• The transmitter should be mounted pointing down to prevent water build-up on the sensor head.
• The transmitter should not be placed where contaminating substances may coat it.
• Although the Model S4000C is RFI resistant, it should not be mounted in close proximity to radio transmitters or similar equipment.
• Locate the Model S4000C where prevailing air currents contain the maximum concentration of gas.
• Locate the Model S4000C near possible sources of gas leaks.
• Observe the Model S4000C’s temperature specification and locate the unit away from concentrated sources of heat.
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S4000C
• Transmitters should be mounted in an area that is as free from wind, dust, water, shock,
and vibration as possible. See Section 9.3.4 for the environmental specifications of the unit.
If the sensor cannot be located away from dust and rain, then we recommend the use of our splash guard GM P/N 10395-1 to help protect the sensor.
Sensors may be adversely affected by prolonged exposure to certain materials. Loss of sensitivity or corrosion may be gradual if such materials are present in low concentrations, or it may be rapid at high concentrations. The more important materials adversely affecting sensors are:
• Constant presence of high concentrations of Hydrogen Sulfide (H
2
S) gas
• Silicones (often contained in greases and aerosols)
• Halides, compounds containing Fluorine, Chlorine, Bromine and Iodine
• Heavy metals, e.g. Tetraethyl Lead
• Caustic and acidic liquids and vapors
The presence of poisons and contaminants in an area does not necessarily preclude the use of a Model S4000C Intelligent Sensor. The feasibility of using a sensor in such areas must be determined by an analysis of the specific factors in each application and General Monitors should be consulted before attempting any such installation.
Sensors used in these areas usually require more frequent calibration checks than normal, and typically have a shorter life. In many such applications, the standard two-year warranty would not apply.
WARNING: General Monitors discourages the painting of sensor assemblies. If the sensor head is painted over, the gas will not be able to diffuse into the sensor. If the assembly cover is painted over, the digital display cannot be read.
3.3.1 Remote Mounting of the Sensor from the Electronics
If it is necessary to remotely mount the sensor from the electronics and the housing, the maximum distance can be no greater than 7600 feet, using 14 AWG wire. Sensors that are remotely mounted must be placed in an explosion-proof rated sensor housing (GM P/N 10252-
1), and the cable run must be contained in conduit running from the sensor housing to the
electronics. See Section 9.7 for FMRC approval requirements.
3.4 Mounting and Wiring
WARNING: The conduit entries should be sealed per the NEC 500-3d or Canadian Electrical
Code Handbook (Part 1, Section 18-154). Additional benefit of conduit seals is the prevention of water entering the housing through the conduit entry.
WARNING: Unused cable entry holes must be sealed with an approved explosion-proof stopping plug. Red caps supplied by General Monitors are for dust protection only, and must not be left on the unit when installed.
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S4000C
The overall and mounting dimensions for the Model S4000C (Figure 5) should be used when
making installation determinations. A complete list of the mechanical specifications can be
To prevent possible corrosion due to moisture or condensation, it is recommended that the conduit connected to the Model S4000C housing be sealed, or contain a drain loop. Each conduit run from a hazardous location to a non-hazardous location should be sealed so that gases, vapors, and/or flames cannot pass beyond the seal. The purpose of seals in a Class I hazardous location is to prevent the passage of gases, vapors, or flames from one electrical installation to another through the conduit system.
It is not necessary to seal the Model S4000C housing to maintain its explosion-proof integrity; however, conduit runs containing wires attached to the Model S4000C’s relay contacts must be
Information on Class I location seals can be found in the NEC, Article 501-5.
WARNING: Acetic acid will cause damage to metal components, metal hardware, ceramic
IC’s, etc. If damage results from the use of a sealant that outgases acetic acid
(RTV silicone), the warranty will be void.
Figure 5: Outline and Mounting Dimensions
Once correctly installed, the Model S4000C requires little or no maintenance, other than periodic calibration checks to ensure system integrity. General Monitors recommends that a schedule be established and followed.
NOTE: The system’s full two-year warranty will be voided if customer personnel or third parties damage the system during repair attempts.
Sensor heads exposed to the elements may require the accessory mounting threads to be lubricated. Grease must not be used. As an alternate, PTFE (Teflon) tape may be used on sensor accessory threads.
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S4000C
NOTE: Do not use any material or substance on threads that contact the sensor housing.
The removal of particulate matter from sensor accessories may be done through the use of an appropriate halogen-free solvent. Water or ethanol are examples of suitable solvents. The accessories should be thoroughly dried with compressed air, if necessary, before refitting to the sensor body.
3.5 Terminal Connections
The terminal blocks (TB) are located inside the housing and can by accessed by removing the cover. A label on the inside of the housing cover provides details of all the terminal connections.
3.5.1 Terminal Block TB1 – Sensor Connections
TB1 contains the three sensor connections, white (W), black (B), and red (R). Remove the display board by loosening the two captive screws on the board and lifting it straight up.
Connect the color-coded wires from the combustible sensor to the matching colored terminals on TB1. The label on the inside of the cover can serve as a guide. Replace the display board by pressing it into place, and tightening the two captive screws.
WARNING: Do not connect +24VDC to TB1. Damage to the electronics may result.
3.5.2 Terminal Block TB2 – Power and Signal Connections
TB2 contains the connections for Power, Relay Reset, Remote Calibration, MODBUS and 0-
20mA Output Signal. The terminal connections are as follows:
TB2 position Function
2
3
4
5
6
8
CH1 MODBUS -
CH1 MODBUS +
CH2 MODBUS -
CH2 MODBUS +
Remote Calibration
Ground
Table 1: TB2 Power and Signal Connections
It is recommended that a three-wire (red, black, white) shielded cable be used for making power and output signal connections on the Model S4000C. The Spring Type terminal block accepts 14 AWG to 20 AWG and the Screw Type terminal block accepts 12 AWG to 18 AWG stranded or solid wire. Each wire should be stripped before wiring the Model S4000C Intelligent
Sensor. To connect wiring to the Spring Type terminal block, insert a screwdriver into the
orange tab and press down (Figure 6), opening the terminal. Insert the wire into the terminal
and release the orange tab, clamping the wire in the terminal. Check the hold of the wire by
GENTLY tugging it to ensure it is locked in.
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S4000C
To connect wiring to the Screw Type terminal block, (Figure 7) use a screwdriver to loosen the
top screw counter clock wise. Insert the wire into the terminal and tighten the top screw clock wise. Check the hold of the wire by GENTLY tugging it to ensure it is locked in.
Figure 6: Spring Type Terminal Block Operation
Figure 7: Screw Type Terminal Block Operation
Figure 8: Wire Strip Length
NOTE: Up to 12 AWG wire can be used if it is carefully stripped (on a Screw Type terminal)
3.5.3 DC Power and Ground Connections
The customer must provide primary DC power unless one of the following General Monitors
Modules is being used with the Model S4000C:
• DC130 Dual-Channel Readout/Relay Display Module
• TA102A Trip Amplifier Module with a PS002 Power Supply & Relay Module
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S4000C
The following General Monitors Modules provide power connections for the Model S4000C, but need a customer supplied DC source:
• DC110 Eight-Channel Readout/Relay Display Module
• TA102A Trip Amplifier Module without a PS002
Since the Model S4000C is designed to operate continuously, a power switch is not included, in order to prevent accidental system shutdown.
NOTE: Power must remain disconnected until all other wiring connections have been made.
The maximum distance between the Model S4000C and the power supply is 3000 feet or 910
meters (each cable run should be as short as possible). See Section 9.3.3 for cable length
specifications. To connect +24VDC to the Model S4000C, connect the red wire to TB2, position
9. Connect the black wire to TB2, position 8. For making power and ground connections to
display devices see Table 2 and Table 3.
FROM
Model
S4000C
TB2-8
“COM”
TO
Model
DC110
Rear
COMMON
Model
DC130
Rear
Pin 3 or 6
“COM”
Model
TA102A
Rear
Pin 30d or 30z
Table 2: Ground or Common Connections
FROM
Model
S4000C
TB2-9
“+24
VDC”
TO
Model
DC110
Rear
CH 1 – 8
24V
Model
DC130
Rear
Pin 4 or 7
“DC OUT”
Table 3: Power Connections
Model
TA102A
Rear
Pin 28d or 28z
3.5.4 Analog Signal Connections
The Model S4000C Intelligent Sensor provides a 4 to 20mA output signal. It can be sent up to
9000 feet (2740 meters) to a General Monitors’ readout/relay display module, or an industrial analog to digital converter, or a computer-based monitor, a PLC, a DCS, etc. The 4 to 20mA signal provides for control room or other locations remote to the Model S4000C to display indications of operation and alarm conditions. To connect the 4 to 20mA output signal with another unit, connect the wire into TB2, position 1, labeled 4-20mA OUT. For making output
signal connections to display devices (Table 4), refer to the specific manual for that device.
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S4000C
FROM
Model
S4000C
TB2-1
4-20mA
Output
Model
DC110
Rear
CH 1 – 8
4-20mA
Model
DC120
Rear
TB1
Pin 8 or 9
TO
Model
DC130
Rear
Pin 2 or 5
Analog In
Model
TA102A
Rear
Pin 26d or
26z
Table 4: Analog Signal Connections
If a device other than a General Monitors’ readout/relay display module is being used, the DC ground, COM, of both systems must be connected together.
TB3 contains the connections for the Relay Contacts (optional). The function for the Warn and
Alarm Relay connections vary according to the normal state of the relay. Use the following as a guide for determining the Normally Open (NO) and the Normally Closed (NC) contact:
TB3 position
1
2
3
Relay Contact
(De-Energized)
Normally Closed
Common
Normally Open
Relay Contact
(Energized)
Normally Open
Common
Normally Closed
TB3 position
4
5
6
Table 5: Alarm Relay Connections
Relay Contact
(De-Energized)
Normally Closed
Common
Normally Open
Relay Contact
(Energized)
Normally Open
Common
Normally Closed
TB3 position
Table 6: Warn Relay Connections
Relay Contact (Energized)
8 Common
Table 7: Fault Relay Connections
*NOTE: Fault relay is normally energized. Relay will change state after power up.
WARNING: Contact with PCB components should be avoided to prevent damage by static electricity. All wire connections are made to the Terminal Blocks.
WARNING: Relay contacts must be protected against transient and over voltage conditions
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S4000C
Figure 9: Relay Protection for DC and AC Loads
European Union (EU) Approved Applications: The ALARM relay contact ratings are 8A, 30 V
RMS/42.4 V peak or 8A @ 30 VDC resistive max.
North American Approved Applications: The ALARM relay contact ratings are 8A @ 250 VAC and 8A @ 30 VDC resistive max.
Interconnecting cables must have an overall screen or screen and armor. Cables BS5308 Part
2, Type 2, or equivalent are suitable. Note that the terms ‘screen’ and ‘shield’ are equivalent for the purpose of this manual. The cable armor must be terminated in a suitable cable gland, at the detector, to ensure a positive electrical connection.
• The cable armor must be connected to safety earth in the safe area.
• The cable screen (drain wire) must be connected to an instrument earth in the safe area.
• The power supply OV return must be connected to an instrument earth in the safe area.
• The interconnecting cables should be segregated from power and other noisy cables.
Avoid proximity to cables associated with radio transmitters, welders, switch mode power supplies, inverters, battery chargers, ignition systems, generators, switch gear, arc lights and other high frequency or high power switching process equipment. In general, maintain separation of at least 1 meter between instrument and other cables. Greater separations are required where long parallel cable runs are unavoidable. Avoid running instrument cable trenches close to lightning conductor earthing pits.
• Complete all cable insulation testing before connecting the cable at either end.
WARNING: Under NO circumstances should equipment be connected or disconnected when under power. This is contrary to hazardous area regulations and may lead to serious damage to the equipment. Equipment damaged in this manner is not covered under warranty.
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S4000C
3.6 Maintaining the X/P Integrity
The Model S4000C Intelligent Sensor is rated explosion-proof for use in the following hazardous locations:
• CSA/FM: Class I, Division 1, Groups B, C, D and Class I, Zone 1, Ex d IIB+H
2
, T6
• ATEX: II 2 G EEx d IIB T5 (Tamb=-40°C to +70°C) EN 61779-1
Some of the factors that influence the explosion-proof integrity of the Model S4000C housing are:
• Strength of the enclosure material
• Thickness of the enclosure walls
• Flame path between the housing and cover
• Flame path of threaded joints
The acceptable limits for explosion-proof housings that are used in Class I hazardous locations are defined in CSA Standard C22.2 No.30-M1986, FM 3615, and EN50014.
Anytime the cover of the Model S4000C housing is removed, or the cover bolts are loosened, the flame path between the lid and the housing is affected. If power is to be left on while removing the cover or loosening the cover bolts on the Model S4000C, it will be necessary to declassify the area.
When replacing the cover, the gap between the lid and the housing should be less than .0015 inch (.038 mm). Make sure that the flame-path is clear of dirt and debris before replacing the cover. This can be verified by tightening the cover bolts to a torque setting of 50 inch-pounds or by using a feeler gauge to ensure the gap between the cover and the housing is less than
.0015 inch (.038 mm).
There are four entry holes, one each on the left and right sides, and two on the bottom of the
Model S4000C housing. These holes are dedicated for the sensor, the reset switch and conduit. Each hole is tapped for ¾” NPT threads. If a particular entry hole is not used, it must be plugged during operation in the field. The factory installs plugs in the unused entry holes, except one. A red plastic cap is placed into the remaining hole and must be removed before conduit can be attached to the housing.
The Model S4000C will have the following items placed in the three remaining entry holes, at the factory:
• A sensor, if present (otherwise a red plastic cap)
• A reset switch, if present (otherwise an aluminum housing plug - optional)
• An aluminum-housing plug
The sensor, reset switch, and aluminum-housing plug have seven threads. Each of these components is screwed into the housing using five to seven turns. If it becomes necessary to replace the sensor, reset switch and/or the aluminum-housing plug, the user must use five to seven turns to ensure the explosion-proof integrity of the housing is maintained.
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S4000C
4.0 Operation
4.1 Start-Up Checklist
Prior to starting the system, verify the following:
1. Inhibit any external devices, such as Trip Amplifiers, PLC’s, or DCS systems.
2. Verify that the optional settings are set for the desired configuration.
3. Verify that the unit is properly mounted. Ensure the conduit/cable gland entries are pointed downward.
4. Verify that the signal wiring is correct.
5. Verify that the power supply is connected properly. The Model S4000C is powered by
+24VDC (20 to 36 VDC voltage range). The detector will output a low voltage (F6) fault at 18.5 VDC or below.
6. Make sure the lid is securely installed or the area has been declassified.
4.2 Start-Up
Before applying power to the system for the first time, all wiring connections should be checked for correctness and the housing cover replaced. Upon first power-up the sensor may take up to fifteen minutes to stabilize.
At the initial application of power, the unit will test all of the LED segments by displaying “88.8”.
The software revision letter will then be displayed for a few seconds. The unit will then enter a fifty second Start-Up mode. During this period, the display will read “SU”. The unit will then enter Operational Mode, and the current gas concentration at the sensor will be displayed. For
details of Calibrating and Gas Checking the unit, see Sections 4.5 and 4.6.
4.3 Relay Reset
If the Warn and Alarm relays are configured as latching, they must be manually reset, after an alarm occurs. This can be accomplished by three different methods:
1. The relays can be reset via the MODBUS Interface (Section 8.8.16).
2. The relays can be reset via the magnetic switch using a magnet. Place the magnet over the GM Logo on the cover of the unit. After three seconds, the display will show
“rSt”. Remove the magnet at this time and the relays will be reset (Figure 10).
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S4000C
Figure 10: Relay Reset
3. The relays can be reset via the Remote Reset input terminals on TB2. Connect a normally open switch between terminal TB2-7 and TB2-8. Closing the switch momentarily will reset the relays. General Monitors explosion-proof switch, P/N 30051-
1, can be used for this purpose. See Section 9.6 for ordering instructions.
NOTE: Red LED’s above and below the digital display indicate that the Alarm and Warn relays are active. Latching relays can only be reset if the gas concentration has fallen below the respective relay set point.
4.4 User Selectable Options
The Model S4000C Intelligent Sensor includes many selectable options to provide the user with the most flexible combustible gas detector possible. These options include Adjustable
Calibration Level, Warn and Alarm Relay Set Points and Configuration, and MODBUS
Communications Settings. These allow the unit to operate with a wide variety of PLC and DCS
Systems. The following sections explain the available options and how they can be customized.
A flow diagram is included to help the user in understanding the process of reviewing and
changing the available options (Figure 11).
NOTE: If the unit was ordered without relays or MODBUS communications, changing relay or
MODBUS settings will have no effect on the operation of the unit.
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S4000C
Operate
4.4.1 Model S4000C User Menu Structure
“rSt”
N
“- -”
“AC”
N
“SE”
N
“Fi”
Reset
Relays
Enter Gas Check Mode
Enter Calibration
Mode
N
Gas
Detected?
Y
Gas
Removed?
Reset
Sensor Life?
Y
Reset Sensor
Life to 100%
N
Apply Gas and
Remove When
Complete
“cL”
“Co”
Set Calibration
Level 25% -90%
Enable Disable
“Fi”
“Fi”
“Lo”
Warm Relay
Energized or
De-Energized
Latching or
Non-Latching
Setpoint
“Hi”
Alarm Relay
Energized or
De-Energized
Latching or
Non-Latching
Setpoint
“CH1”
Modbus
Channel 1
Baud Rate Data Format Address
“Fi”
“Fi”
“Fi”
“CH2”
Modbus
Channel 1
Baud Rate Data Format Address
“Fi”
N
“Fi”
Finished
Y
Figure 11: User Menu Structure
NOTE: “Co” represents Calibration Output. When “Co” is enabled and calibration is successful, the analog output goes from 1.5 mA to 3.2 mA for 5 seconds, settling at the desired value of 4mA.
To adjust the calibration level of the Model S4000C, apply the magnet to the GM Logo on the cover of the unit, until “SE” is displayed, then remove the magnet. This puts the unit into Setup
Mode. After a few seconds “cL” will be displayed. Apply and remove the magnet to adjust the calibration level. The current calibration level will be displayed. To change the calibration level, apply and remove the magnet repeatedly, until the desired level is displayed. Holding the
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S4000C
magnet in place will cause the display to advance rapidly after a few seconds. Once the desired value is displayed, wait 3 seconds and “Fi” will be displayed. Apply and remove the magnet to return to the next level of the Setup menu. When “Fi” is displayed again, apply and remove the magnet to return to normal operation. The default calibration level is 50% LEL.
4.4.3 Warning Relay Settings
To adjust the Warning Relay Settings of the Model S4000C, apply the magnet to the GM Logo on the cover of the unit until “SE” is displayed, then remove the magnet. This puts the unit into
Setup Mode. After a few seconds “Lo” will be displayed. Apply and remove the magnet to change the Warning or “Low” alarm settings.
First, the Energized/De-Energized state of the relay is shown by either “En” or “dE” being displayed, respectively. Apply and remove the magnet until the desired state is displayed.
After a few seconds, the Latching/Non-Latching state of the relay is shown by either “La” or
“nL”. Apply and remove the magnet, until the desired state is displayed.
After a few seconds, the current Warning relay set point is displayed. Apply and remove the magnet, until the desired set point is displayed. Once the desired set point value is displayed, wait 3 seconds and “Fi” will be displayed. Apply and remove the magnet to return to the next level of the Setup menu. When “Fi” is displayed again, apply and remove the magnet, to return to normal operation.
The default Warning relay settings are: non-latching, de-energized, 30% LEL set point.
NOTE: The Warn relay set point cannot be set higher than the Alarm Relay set point, or higher than 60% LEL.
4.4.4 Alarm Relay Settings
To adjust the Alarm Relay Settings of the Model S4000C, apply the magnet to the GM Logo on the cover of the unit until “SE” is displayed, then remove the magnet. This puts the unit into
Setup Mode. After a few seconds “Hi” will be displayed. Apply and remove the magnet to change the Alarm or “High” alarm settings.
First, the Energized/De-Energized state of the relay is shown by either “En” or “dE” being displayed respectively. Apply and remove the magnet, until the desired state is displayed.
After a few seconds, the Latching/Non-Latching state of the relay is shown by either “La” or
“nL”. Apply and remove the magnet, until the desired state is displayed.
After a few seconds, the current Alarm relay set point is displayed. Apply and remove the magnet until the desired set point is displayed. Once the desired set point value is shown, wait
3 seconds and “Fi” will be displayed. Apply and remove the magnet to return to the next level of the Setup menu. When “Fi” is displayed again, apply and remove the magnet to return to normal operation.
The default Alarm relay settings are: latching, de-energized, 60% LEL set point.
16
S4000C
NOTE: The Alarm relay set point cannot be set lower than the Warning Relay set point, or higher than 60% LEL.
4.4.5 MODBUS Channel 1 Settings
To change the MODBUS Channel 1 settings of the Model S4000C, apply the magnet to the GM
Logo on the cover of the unit until “SE” is displayed, then remove the magnet. This puts the unit into Setup Mode. After a few seconds “CH1” will be displayed. Apply and remove the magnet to change the MODBUS Channel 1 settings.
First, the current Baud Rate MODBUS Channel 1 is displayed. If another baud rate is to be selected, apply and remove the magnet until the desired baud rate is displayed. The choices are: 19.2k baud “19.2”, 9600 baud “96”, 4800 baud “48”, or 2400 baud “24”.
After a few seconds, the current Data Format for MODBUS Channel 1 is displayed. If another data format is to be selected, apply and remove the magnet until the desired data format is displayed. The choices are: 8-N-1 “8n1”, 8-N-2 “8n2”, 8-E-1 “8E1”, or 8-O-1 “8O1”.
After a few seconds, the current address for MODBUS Channel 1 is displayed. Apply and remove the magnet until the desired address is displayed. Once the desired address is displayed, wait 3 seconds and “Fi” will be displayed. Apply and remove the magnet to return to the next level of the Setup menu. When “Fi” is displayed again, apply and remove the magnet to return to normal operation.
Default settings for Channel 1 are: address 1, 19.2k baud, 8-N-1.
NOTE: The address can be adjusted from 1 - 247. Channel 1 and Channel 2 addresses may be the same.
4.4.6 MODBUS Channel 2 Settings
To change the MODBUS Channel 2 Settings of the Model S4000C, apply the magnet to the
GM Logo on the cover of the unit until “SE” is displayed, then remove the magnet. This puts the unit into Setup Mode. After a few seconds “CH2” will be displayed. Apply and remove the magnet to change the MODBUS Channel 2 settings.
First, the current Baud Rate MODBUS Channel 2 is displayed. If another baud rate is to be selected, apply and remove the magnet until the desired baud rate is displayed. The choices are: 19.2 kbaud “19.2”, 9600 baud “96”, 4800 baud “48”, or 2400 baud “24”.
After a few seconds, the current Data Format for MODBUS Channel 2 is displayed. If another data format is to be selected, apply and remove the magnet until the desired data format is displayed. The choices are: 8-N-1 “8n1”, 8-N-2 “8n2”, 8-E-1 “8E1”, or 8-O-1 “8O1”.
After a few seconds, the current address for MODBUS Channel 2 is displayed. Apply and remove the magnet until the desired address is displayed. Once the desired address is displayed, wait 3 seconds and “Fi” will be displayed. Apply and remove the magnet to return to the next level of the Setup menu. When “Fi” is displayed again, apply and remove the magnet to return to normal operation.
Default settings for Channel 2 are: address 2, 19.2 kbaud, 8-N-1.
17
S4000C
NOTE: The address can be adjusted from 1 - 247. Channel 1 and Channel 2 addresses may be the same.
4.5 Gas Check Mode
The sensor response can be checked without activating external alarms by placing the Model
S4000C in Gas Check Mode. In this Mode, the alarm relays are inhibited and the analog output is fixed at 1.5mA.
4.5.1 Procedure for Checking the Calibration
Place the magnet over the GM Logo on the cover of the Model S4000C. Remove the magnet
when a flashing pair of bars, “- -” (Figure 12), appears on the display (about ten seconds).
Apply the test gas to the sensor; the value of the gas concentration will be indicated by the flashing display, and should stabilize in one to two minutes.
Figure 12: Calibration Check
When the reading has stabilized and the test is complete, remove the gas and the unit will return to normal operation when the concentration drops below 5% full-scale.
If, after the reading has stabilized, the sensor is to be calibrated, simply apply the magnet to the
GM Logo on the housing cover, and the unit will enter Calibration Mode.
Gas Check Mode can be aborted if gas has not been applied to the sensor. Simply reapply the magnet to the GM Logo on the cover and the unit will return to normal operation.
NOTE: The test gas concentration must be at least 10% full-scale before the unit will complete the gas check sequence. If the Model S4000C is placed in the Gas Check Mode and no gas is applied for six minutes, the unit will revert to a Fault condition. Re-applying the magnet over the GM Logo will return the unit to normal operation.
4.6 Calibration
General Monitors recommends that the Model S4000C Intelligent Sensor be calibrated one hour after start-up, and that the calibration be checked at least every ninety (90) days to ensure system integrity. Frequent calibration checks ensure the integrity of the life protecting equipment.
The above statement is not intended to discourage the customer from checking calibration more frequently. Frequent calibration checks are recommended for environments that have problems, such as mud collecting on the sensor head, sensors accidentally being painted over, etc.
18
S4000C
General Monitors recommends that a calibration schedule be established and followed. A logbook should also be kept, showing calibration dates and dates of sensor replacement.
If it is suspected that gases are present, it will be necessary to purge the sensor environment with Zero Air. If Zero Air is not available, cover the sensor for about thirty seconds before applying the calibration gas. Zero Air is air that is hydrocarbon free.
Entering Calibration Mode automatically disables the alarm circuits by sending a 1.5mA output signal and disabling the Warn and Alarm relays, if present. This will also prevent activation of the remote relay contacts when using a General Monitors Readout/Relay Display Module with the Model S4000C.
To enter Calibration Mode, place the magnet over the GM Logo on the cover of the unit (Figure
4) and hold it there until “AC” (Figure 13) appears on the display (about ten seconds). The
display will flash the remaining sensor life (Section 4.6.4) for about ten seconds, while the unit
acquires the zero reading. Ensure that the sensor is seeing clean air during this time.
Figure 13: Automatic Calibration Mode
Apply the calibration gas concentration to the sensor (usually 50% LEL of the desired gas). The display will change from “AC” (Automatic Calibration) to “CP” (Calibration in Progress),
indicating that the sensor is responding to the calibration gas (Figure 14).
Figure 14: Calibration In Progress Mode
After one or two minutes, the display will change from “CP” to “CC” (Figure 15), indicating that
the calibration is complete.
Figure 15: Calibration Complete Mode
Remove the gas and wait for the unit to return to normal operation. The display will indicate a few percent full-scale and then drop to “0”.
19
S4000C
The unit is now calibrated and the new ZERO and SPAN values have been stored in the nonvolatile memory (EEPROM).
If calibration is to be aborted, and gas has not been applied, wait ninety seconds and reapply the magnet. The unit will return to normal operation with the previous calibration values unchanged.
NOTE: Once gas has been applied, it is not possible to abort a calibration.
If the Model S4000C is placed in the Calibration Mode and no gas is applied for six minutes, the unit will revert to a Fault condition. Re-applying the magnet over the GM Logo will return the unit to operational mode with the previous calibration values unchanged.
4.6.3 Adjustable Calibration Level
The Model S4000C provides the user with the ability to adjust the calibration level from 25%
LEL to 90% LEL. The default value from the factory is 50% LEL. This allows the user to utilize gas already available at their installation, that is not 50% LEL of the gas being detected, or to perform cross-calibration to a similar gas. Adjusting the Calibration Level is performed in Setup
Mode.
NOTE: %LEL to %Volume Fraction is converted by using 325 Guide to Fire Hazard properties of Flammable Liquids, Gases, and Volatile Solids. For example, 100% LEL CH4 is shown in NFPA to be 5% Volume, Calibration is at 50% LEL or 2.5% Volume.
WARNING: General Monitors recommends calibrating the Model S4000C with 50% LEL of the gas being detected. This provides the most accurate calibration, since the
Model S4000C is optimized for this concentration. The accuracy of the calibration may be reduced by using a different calibration level, and this inaccuracy will increase as the calibration level varies from 50% LEL.
4.6.4 Remaining Sensor Life
The Model S4000C Intelligent Sensor provides an estimate of remaining sensor life, in percent remaining, to provide the user with an early warning of the need for sensor replacement. The remaining sensor life is updated each time the unit is calibrated. The current remaining sensor life estimate is displayed during the zeroing portion of a calibration sequence. It can also be
read via the MODBUS interface (Section 8.8.17).
NOTE: The remaining sensor life provides an estimate of the amount of life remaining for the sensor. Many factors including, environmental conditions, poisons, etc can affect this estimate. It should be used only as an estimate for preventive maintenance and logistic purposes.
4.6.5 Initializing the Remaining Sensor Life
The remaining sensor life estimate must be initialized each time a new Hydrocarbon Sensor is installed. The initialization should be done during the first calibration of a newly installed sensor.
After the sensor has been on power for a minimum of one hour, enter calibration mode as
20
S4000C
described in Section 4.6.1. While the display is flashing the remaining sensor life estimate
during zeroing, apply the magnet to the GM Logo on the cover. The flashing number will change to “100”, indicating the sensor has 100% of remaining sensor life. Complete the
calibration per Section 4.6.1.
4.7 Calibration Equipment
4.7.1 Portable Purge Calibrator
The portable purge calibrator is a compact, accurate and safe system containing a nonexplosive gas concentration. The lecture bottle is filled with a standard 50% LEL mixture of gas/air. Using a known gas/air mixture reduces the likelihood of error in field calibration. The hose and cup adapter included, allow for quick calibrations and gas checks.
Pre-mixed calibration gases at approximately 50% LEL are available, in lecture bottles, at 1200 psi,
8.3 MPa maximum pressure.
Hydrogen H
2
Methane CH
4
Propane C
3
H
8
Please specify the gas upon ordering. Spare bottles containing these gases may be ordered.
Methane and Hydrogen lecture bottles may be returned to General Monitors for refilling.
21
S4000C
5.0 Maintenance
5.1 General Maintenance
WARNING: Disconnect or inhibit external devices such as Trip Amplifiers, PLC’s, or DCS systems before performing any maintenance.
European Union (EU) Approved Applications: The following grease compound is recommended for use: PBC Polybutylcuprysil, (or equivalent), which has BASEEFA Health & Safety Executive component approval No. 1051U for use as a jointing compound on flameproof electrical enclosures. This is available from General Monitors.
The neoprene rubber gasket, if it is found dry should also be lubricated with Type P80 lubricant, available from General Monitors (P/N 610-010).
5.2 Storage
The Model S4000C Combustible Gas Detector should be stored in a clean, dry area, and within the temperature and humidity ranges quoted in the Appendix under Environmental
Specifications.
Insert red dust caps into any vacant cable entry holes.
22
S4000C
6.0 Troubleshooting
CAUTION:
Component level repair must be undertaken either by General Monitors’ personnel, or by competent authorized service engineers. SMT PCB repair shall only be performed at a General Monitors facility. Failure to comply with this requirement will invalidate the warranty.
Be sure to inhibit or disconnect external alarm wiring before making any check, which might send the unit into alarm, if an alarm condition will cause a problem.
6.1 Fault Codes & Their Remedies
The Model S4000C has self-diagnostics incorporated into the microprocessor’s program. If a
Fault is detected, the output signal will drop to 0mA, the Fault relay will de-energize and a Fault code will be displayed. The output signal will inform a remote display module that the Model
S4000C is in the Fault Mode. The display will indicate a Fault code that can be viewed at the sensor site.
There are nine Fault conditions that are monitored by the microprocessor, as follows:
6.1.1 F2 Failed to Complete Calibration
This Fault will occur if the unit is placed in the calibration mode and no gas has been applied within six minutes, or if gas has been left on for more than six minutes.
ACTION – Remove gas, if present. Apply the magnet to the GM Logo on the cover to clear the fault. Attempt to calibrate.
6.1.2 F3 EEPROM Checksum Error
This fault indicates that the contents of the Model S4000C’s program memory have changed.
This usually occurs, when powering the unit up after a lightning strike or large voltage transient on the power or signal lines to the unit.
ACTION - The unit must be returned to the factory or authorized service center for repair.
This fault indicates that either one of the remote sensor leads is open or shorted, or that the sensor has drifted greater than –10%.
ACTION - Check the integrity of all sensor connections, and ensure that the cable from the
Model S4000C to the remote sensor is not damaged. If all sensor leads are connected properly, attempt to re-calibrate the unit. If calibration fails, replace the sensor and re-calibrate.
23
S4000C
6.1.5 F6 Low Supply Voltage
This fault occurs if the supply voltage at the S4000C drops below +18.5VDC.
ACTION - Ensure that the supply voltage is at least +20VDC at the Model S4000C.
NOTE: With long supply leads, a considerable voltage drop may occur, due to the electrical resistance of the leads. The maximum cable resistance, which the Model S4000C can tolerate, is dependent on the supply voltage: a maximum of 20 ohms per conductor (40 ohms loop), at +24VDC minimum, or a maximum of 10 ohms per conductor (20 ohms loop), at +20VDC minimum.
6.1.6 F7 EEPROM Verification Failure
This fault occurs when an attempt to verify the setup/calibration parameters just written to the
EEPROM memory fails.
ACTION - The unit must be returned to the factory or authorized service center for repair.
6.1.7 F8 Failure to Complete Setup
This fault occurs if the unit is left in setup mode for more than 6 minutes.
ACTION - Exit setup mode. Enter setup mode again if it is necessary to change any user selectable options.
6.1.8 F9 Gas Check Period Exceeded
If the Model S4000C is left in the gas check mode for more than six minutes without a Test Gas being applied or if test gas is left on the gas check mode for more than 6 minutes, this fault will occur.
ACTION - Place the magnet over the GM Logo on the cover to return the unit to normal operation.
NOTE: Anytime a sensor is replaced, the unit should be disconnected from all alarms, as the unit may go upscale upon power-up.
6.1.9 F10 Switch Error
This fault occurs if the remote reset, remote calibrate, or the magnetic switch are closed for more than two minutes.
ACTION – Check the wiring on the remote reset and remote calibrate switches. Once the short circuit is cleared, the unit will return to normal operation. If the magnetic switch is shorted, the unit must be returned to the factory or authorized service center for service.
24
7.0 Customer Support
7.1 General Monitors’ Offices
Area
UNITED STATES
Corporate Office:
26776 Simpatica Circle
Lake Forest, CA 92630
9776 Whithorn Drive
Houston, TX 77095
UNITED KINGDOM
Heather Close
Lyme Green Business Park
Macclesfield, Cheshire,
United Kingdom, SK11 0LR
IRELAND
Ballybrit Business Park
Galway, Republic of Ireland
SINGAPORE
No. 2 Kallang Pudding Rd.
#09-16 Mactech Building
Singapore 349307
MIDDLE EAST
LOB12, #G20
P.O. Box 61209
Jebel Ali, Dubai
United Arab Emirates
Phone/Fax/Email
Toll Free: +1-800-446-4872
Phone: +1-949-581-4464
Fax: +1-949-581-1151
Email: [email protected]
Phone: +1-281-855-6000
Fax: +1-281-855-3290
Email: [email protected]
Phone: +44-1625-619-583
Fax: +44-1625-619-098
Email: [email protected]
Phone: +353-91-751175
Fax: +353-91-751317
Email: [email protected]
Phone: +65-6-748-3488
Fax: +65-6-748-1911
Email: [email protected]
Phone: +971-4-8815751
Fax: +971-4-8817927
Email: [email protected]
Table 8: GM Locations
S4000C
25
S4000C
8.0 MODBUS Interface
8.1 Baud Rate
The Baud Rate is selectable via the MODBUS Communications Interface. The selectable baud rates are 19200, 9600, 4800, or 2400 bits per second.
8.2 Data Format
The Data Format is selectable via the MODBUS Communications Interface. The selectable data formats are as follows:
Data Bits Parity Stop Bit Format
8
8
Even 1 8-E-1
None 2
Table 9: Data Format
8-N-2
8.3 MODBUS Read Status Protocol (Query/Response)
8.3.1 MODBUS Read Query Message
5 th
6 th
7 th
8 th
Byte
1 st
2 nd
3 rd
4 th
MODBUS
Slave Address
Function Code
Starting Address Hi**
Starting Address Lo**
No. of Registers Hi
No. of Registers Lo
CRC Lo
CRC Hi
Range Referenced to S4000C
1-247* (Decimal) S4000C ID (Address)
03
00
Read Holding Registers
Not Used by S4000C
00-FF (Hex)
00
01
00-FF (Hex)
00-FF (Hex)
S4000C Commands
Not Used by S4000C
No. of 16 Bit Registers
CRC Lo Byte
CRC Hi Byte
*NOTE: Address 0 is reserved for broadcast mode and will not be supported at this time.
**NOTE: Start Address can be a maximum of 9999 Address Locations (0000-270E).
8.3.2 MODBUS Read Response Message
5 th
6 th
7 th
Byte
1 st
2 nd
3 rd
4 th
MODBUS
Slave Address
Function Code
Byte Count
Data Hi
Data Lo
CRC Lo
CRC Hi
Range Referenced to S4000C
1-247* (Decimal) S4000C ID (Address)
03
02
Read Holding Registers
No. of Data Bytes
00-FF (Hex)
00-FF (Hex)
00-FF (Hex)
00-FF (Hex)
S4000C Hi Byte Status Data
S4000C Lo Byte Status Data
CRC Lo Byte
CRC Hi Byte
26
S4000C
8.4 MODBUS Write Command Protocol (Query/Response)
8.4.1 MODBUS Write Query Message
5 th
6 th
7 th
8 th
Byte
1 st
2 nd
3 rd
4 th
MODBUS
Slave Address
Function Code
Register Address Hi
Register Address Lo
Preset Data Hi
Preset Data Lo
CRC Lo
CRC Hi
Range Referenced to S4000C
1-247* (Decimal) S4000C ID (Address)
06
00
Preset Single Register
Not Used by S4000C
00-FF (Hex)
00-FF (Hex)
00-FF (Hex)
00-FF (Hex)
00-FF (Hex)
S4000C Commands
S4000C Hi Byte Command Data
S4000C Lo Byte Command Data
CRC Lo Byte
CRC Hi Byte
*NOTE: Address 0 is reserved for broadcast mode and will not be supported at this time.
**NOTE: Start Address can be a maximum of 9999 Address Locations (0000-270E)
8.4.2 MODBUS Write Response Message
5 th
6 th
7 th
8 th
Byte
1 st
2 nd
3 rd
4 th
MODBUS
Slave Address
Function Code
Register Address Hi
Register Address Lo
Preset Data Hi
Preset Data Lo
CRC Lo
CRC Hi
Range Referenced to S4000C
1-247* (Decimal) S4000C ID (Address)
06
00
Preset Single Register
Not Used by S4000C
00-FF (Hex)
00-FF (Hex)
00-FF (Hex)
00-FF (Hex
00-FF (Hex)
S4000C Commands
S4000C Hi Byte Command Data
S4000C Lo Byte Command Data
CRC Lo Byte
CRC Hi Byte
8.5 Function Codes Supported
Function Code 03 (Read Holding Registers) will be used to read status from the slave unit.
Function Code 06 (Preset Single Register) will be used to write a command to the slave unit.
8.6 Exception Responses and Exception Codes
In a normal communications query and response, the master device sends a query to the
S4000C and the S4000C receives the query without a communications error and handles the query normally within the master device’s allowable timeout. The S4000C then returns a normal response to the master. An abnormal communications query produces one of four possible events:
1. If the S4000C does not receive the query due to a communications error, then no response is returned from the S4000C and the master device will eventually process a timeout condition for the query.
2. If the S4000C receives the query, but detects a communication error (CRC, etc.), then no response is returned from the S4000C and the master device will eventually process a timeout condition for the query.
27
S4000C
3. If the S4000C receives the query without a communications error, but cannot process the response to the master within the master’s timeout setting, then no response is returned from the S4000C. The master device will eventually process a timeout condition for the query. In order to prevent this condition from occurring, the
maximum response time for the S4000C is 200 milliseconds. Therefore the
master’s timeout setting should be set to 200 milliseconds or greater.
4. If the S4000C receives the query without a communications error, but cannot process it due to reading or writing to a non-existent S4000C command register, then the S4000C will return an exception response message informing the master of the error.
Byte
1
2
3 st nd rd
4 th
5 th
MODBUS
Slave Address
Function Code
Exception Code
CRC Lo
CRC Hi
Range
1-247* (Decimal)
83 or 86 (Hex)
01 - 06 (Hex)
00-FF (Hex)
00-FF (Hex)
Referenced to S4000C
S4000C ID (Address)
MSB is set with Function Code
Appropriate Exception Code (See
Below)
CRC Lo Byte
CRC Hi Byte
The exception response message (ref. No. 4 above) has two fields that differentiate it from a normal response:
Exception Code Field: In a normal response, the S4000C returns data and status in the data field, which was requested in the query from the master. In an exception response, the S4000C returns an exception code in the data field, which describes the S4000C condition that caused the exception. Below is a list of exception codes that are supported by the S4000C:
Code
01
Name
Illegal Function
02
03
04
05
06
Illegal Data Address
Illegal Data Value
Slave Device Failure
Acknowledge
Device Busy
Description
The function code received in the query is not an allowable action for the S4000C.
The data address received in the query is not an allowable address for the S4000C.
A value contained in the query data field is not an allowable value for the S4000C.
An unrecoverable error occurred while the
S4000C was attempting to perform the requested action.
The S4000C has accepted the request and is processing it, but a long duration of time will be required to do so. This response is returned to prevent a timeout error from occurring in the master.
The S4000C is engaged in processing a longduration program command. The master should retransmit the message later when the slave is free.
Table 10: Exception Codes
28
S4000C
8.7 S4000C Command Register Locations
Parameter
Analog
Mode
Not Used
Unit Type
Function
0-20mA Current Output
Indicates and Controls Mode
N/A
Identifies the S4000C in Decimal
Type Scale
Value 16-Bit
Bit
Bit
Value 16-Bit
Access
R 40001
R/W 0001 40002
R 0002 40003
R
Register
Address
0000
0004
Master
I/O
Address
40004
40005
Software Rev Indicates the Software Revision ASCII 2-Char R
Status Returns Analog, Mode, Status,
0005 40006
Multi 6-bytes R 0006 40007
Error, and Sensor Life
40008-40013 Not Used N/A
Alarm Settings Read or change settings for the high alarm
Warn Settings Read or change settings for the low alarm
Com1 Addr Read or change settings for the
Com1 Address
Com1 Baud Read or change settings for the
Com1 Baud Rate
Bit (0-15)
Value 8-Bit
Bit (0-7)
R/W
R/W
R/W
000E
000F
0010
40015
40016
40017
Bit (0-7) R/W 0011 40018
Format Com1 Data Format
Com2 Addr Read or change settings for the
Com2 Address
Com2 Baud Read or change settings for the
Com2 Baud Rate
Value 8-Bit
Function Code
Errors
Total # of Function Code Errors Value 8-Bit
Starting Addr Total # of Starting Address Errors Value 8-Bit
Errors
No of Register
Errors
Total # of Register Errors Value 8-Bit
R/W
R
R
R
0012 40019
Bit (0-7) R/W 0013 40020
Bit (0-7) R/W 0014 40021
Format
Cal Level
Not Used
Com2 Data Format
Read or change settings for the calibration level
N/A
Value 8-Bit
Reset Alarms Reset any latched alarms
Sensor Life Read the Remaining Sensor Life
Bit
Bit
HazardWatch
(Co)
Indicate Calibration Success
(0)
(0)
Value 8-bit
R/W
W
R
R/W
0015
0016
0017
0019
40022
40023
40024
40026
R 0020
40025,
40027-40032
40033 Total Receive
Errors
Total # of Receive Errors
Rate %
Value
Addressed Node vs. Other al
Addressed Nodes
Decim
8-Bit
R 0021 40034
0022
0023
0024
40035
40036
40037
Table 11: Command Register Locations
29
S4000C
Parameter Function Type Scale
RXD CRC Hi
Errors
Total # of RXD CRC Hi Errors Value 8-Bit
RXD CRC 8-Bit
Low Errors
Access
R
R
Register
Address
Master
I/O
Address
0025 40038
0026
Clear Comm Clear All Comm Errors
Errors
Bit (0) W
002C
002D
Table 12: Command Register Locations Cont.
40039
40045
40046
8.8 S4000C Command Register Details
8.8.1 Analog
A read returns a value, which is proportional to the 0-20mA output current. The current is based on a 16-bit value. The scaling is 0 - 65535 decimal which corresponds to 0 - 21.7mA.
8.8.2 Mode
A read returns the present mode of the S4000C. A write command changes the mode to the requested mode.
Exception: Returns an Exception Code 01 (illegal function) if an illegal write is requested.
A calibrate command returns an Exception Code 01 (Acknowledge 05). The operation will take a long time to complete.
Function
Calibration Complete
Bit Position
7 MSB
Zero Complete, Waiting for Gas 5
Access
Read
Read
Calibration Mode
Calibration Check Mode
Run Mode
Startup Mode
8.8.3 Status/Error
3
2
1
0 LSB
Read/Write
Read/Write
Read
Read
A read returns the Alarm state and Errors that are occurring at the present time, which are indicated, by bit position.
Function Bit Position Access
30
S4000C
Not Used
Not Used
Not Used
Not Used
Switch Error
Setup Error
Calibration Check Timeout
EEPROM Error
EPROM Error
Sensor Error
Fail to Calibrate
Low Supply Voltage
4
3
2
1
8
7
6
5
12
11
10
9
Read
Read
Read
Read
Read
Read
Read
Read
Read
Read
Read
Read
A read returns the Decimal Value 4000. This identifies the S4000C.
A read returns the Decimal Value 4001. This identifies the S4000T.
A read returns the software revision of the S4000C in 2 ASCII characters.
A read returns a 6-byte message containing the analog (2 bytes), Mode (1 byte), Status/Error
(2 bytes), and Sensor Life (1 byte) in that order. For the format of each byte, refer to the appropriate individual commands.
A read returns the present Alarm settings of the S4000C. A write command changes the settings to the requested values. The set points are programmable in 5% FS steps.
NOTE: The maximum alarm setting for the S4000C is 60%.
A 1 in the 9 th
bit position means the output is latching, a 0 means it is Non-Latching. A 1 in the
8 th
bit position means the output is normally energized a 0 means it is normally De-Energized.
The Alarm set point cannot be set below the Warn set point.
Factory default is 60%FS, latching, de-energized.
31
S4000C
Exception: Returns an Exception Code 01 (Illegal Function) if an illegal write is requested.
Byte
High
Function
Not Used
Bit Position
15 MSB
Access
Read
Latching/Non-
Latching
Energized/De-
Energized
Low Set point
9 R/W
8 R/W
(7-0) R/W
8.8.8 Warn Settings
A read returns the present Warn settings of the S4000C. A write command changes the settings to the requested values. The set points are programmable in 5% FS steps.
NOTE: The maximum warn setting for the S4000C is 60%.
A 1 in the 9 th
bit position means the output is latching, a 0 means it is Non-Latching. A 1 in the
8 th
bit position means the output is normally energized, a 0 means it is normally De-Energized.
The Warn set point cannot be set above the Alarm set point.
Factory default is 30% FS, non-latching, de-energized.
Exception: Returns an Exception Code 01 (Illegal Function) if an illegal write is requested.
Byte
High
Function
Not Used
Bit Position
15 MSB
Access
Read
Latching/Non-
Latching
Energized/De-
Energized
9 R/W
8 R/W
A read command returns the current address for Com1. A write command changes the address to the requested value. Valid addresses are 1-247 decimal. Factory default is 1.
Exception: If the address is not in range, an illegal data value (03) is returned.
32
S4000C
8.8.10 Com1 Baud Rate
A read command returns the current baud rate for Com1. A write command changes the baud rate to the requested values. Valid settings are shown in the table below. Factory default is
19,200.
Baud Rate Value Access
4800 48 Read/Write
19,200 192
Table 13: Com1 Baud Rate
Read/Write
Exception: If the baud rate is not in range, an illegal data value (03) is returned.
8.8.11 Com1 Data Format
A read command returns the current data format for Com1. A write command changes the data format to the requested values. Valid settings are shown in the table below. Default format is
8-N-1.
Data Parity Stop Format Data(Bits 9-8)
8 None 1 8-N-1 0
Access
Read/Write
8 Even 1 8-E-1 1 Read/Write
8 Odd 1 8-O-1 2 Read/Write
8 None 2 8-N-2 3 Read/Write
Table 14: Com1 Data Format
Exception: If the data format is not in range, an illegal data value (03) is returned.
8.8.12 Com2 Address
A read command returns the current address for Com2. A write command changes the address to the requested values. Valid addresses are 1-247 decimal. Factory default is 2.
Exception: If the address is not in range, an illegal data value (03) is returned.
8.8.13 Com2 Baud Rate
A read command returns the current baud rate for Com2. A write command changes the baud rate to the requested values. Valid settings are shown in the table below. Factory default is
19,200.
Baud Rate Value Access
4800 48 Read/Write
19,200 192
Table 15: Com2 Baud Rate
Read/Write
Exception: If the baud rate is not in range, an illegal data value (03) is returned.
33
S4000C
8.8.14 Com2 Data Format
A read command returns the current data format for Com2. A write command changes the data format to the requested values. Valid settings are shown in the table below. Factory default is
8-N-1.
Data Parity Stop Format Data(Bits 9-8) Access
8 None 1 8-N-1 0 Read/Write
8 Even 1 8-E-1 1 Read/Write
8 Odd 1 8-O-1 2 Read/Write
8 None 2 8-N-2 3 Read/Write
Table 16: Com2 Data Format
Exception: If the data format is not in range, an illegal data value (03) is returned.
8.8.15 Cal Level
A read returns the current settings for the Calibration Level. A write changes the Calibration
Level that will be used during the next and subsequent calibrations. Valid levels are 25 to 90.
8.8.16 Reset Alarms
A write to this register with a data value of 1 will reset any latched alarms provided the current gas level is below the alarm set point.
On the S4000C it will also reset the latching over-range function provided the gas level is below
100% LEL.
8.8.17 Sensor Life
A read returns the current estimate of remaining sensor life in percentage.
8.8.18 HazardWatch (Co – Calibration Output)
A read to this register will return the status of the HazardWatch Option.
0x01 enables this option, 0x00 disables this option, similar to the write.
NOTE: Only Com1 can support read/write to this register.
8.8.19 Total Receive Errors
A read indicates the total MODBUS Comm Receive Errors that occurred in the slave device.
The maximum count is 255 and then the counter will rollover to zero and begin counting again.
The total errors are an accumulation of the individual communication errors listed below.
8.8.20 Bus Activity Rate %
A read indicates the Bus Activity Rate in percent of this Slave’s addressed node versus other addressed nodes. Range of this value is in hex (0-64), which translates to decimal (0-100%).
34
S4000C
8.8.21 Function Code Errors
A read indicates the number of Function Code Errors that occurred in the slave device. The maximum count is 255 and then the counter will rollover to zero and begin counting again.
8.8.22 Starting Address Errors
The counter is incremented for each address that does not equal the device address.
A read indicates the number of Starting Address Errors that occurred in the slave device. The maximum count is 255 and then the counter will rollover to zero and begin counting again.
8.8.23 Number of Register Errors
A read indicates the Number of Register Errors that occurred in the slave device. The maximum count is 255 and then the counter will rollover to zero and begin counting again.
8.8.24 RXD CRC Hi Errors
A read indicates the number of RXD CRC Hi Byte Errors that occurred in the slave device. The maximum count is 255 and then the counter will rollover to zero and begin counting again.
8.8.25 RXD CRC Low Errors
A read indicates the number of RXD CRC Low Byte Errors that occurred in the slave device.
The maximum count is 255 and then the counter will rollover to zero and begin counting again.
8.8.26 Clear Comm Errors
A Read or Write resets all the MODBUS Comm Error counters to zero.
35
S4000C
9.0 Appendix
9.1 Warranty
General Monitors warrants the Model S4000C to be free from defects in workmanship or material under normal use and service within two years from the date of shipment.
General Monitors 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 General Monitors’ personnel.
Defective or damaged equipment must be shipped to the General Monitors’ plant, or representative from which the original shipment was made. In all cases, this warranty is limited to the cost of the equipment supplied by General Monitors. The customer will assume all liability for the misuse of this equipment by its employees, or other personnel.
All warranties are contingent upon proper use in the application for which the product was intended and do not cover products which have been modified or repaired without General
Monitors’ 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, General Monitors 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
General Monitors for damages including, but not limited to, consequential damages arising out of, or in connection with, the performance of the product.
9.2 Principle of Operation
Many gases and vapors are combustible. General Monitors uses a low temperature catalytic bead to detect the presence of combustible gases and vapors. The catalytic bead converts the combustible materials to heat. A change in heat is then converted to a change in resistance, which can be measured.
Taking a matched pair of catalytic beads and coating one so that it does not respond to the presence of combustible gases can compare the change in resistance between the two beads.
The bead that is coated is called the reference bead and the other is called the active bead.
Because the beads are a matched pair, they will respond equally to changes in ambient temperature, humidity, and pressure. This makes the sensor virtually immune to changing environmental conditions.
By connecting one end of each catalytic bead together, a series circuit is formed. This circuit is supplied with a constant current. The voltage drop across each of the beads will be identical in the absence of combustible gases. As combustible material is converted to heat, the resistance of the active bead increases, causing the voltage drop across each bead to be different. This difference is proportional to the amount of combustible gas that is present.
The voltage from the sensor is amplified and fed to an Analog to Digital (A/D) converter and then made available to the microprocessor. The baseline and the gain for the amplifier are set using digital potentiometers. They are adjusted by the microprocessor during calibration.
36
S4000C
9.3 Specifications
Sensor Type:
Sensor Life:
Accuracy:
Zero Drift:
Response Time:
Measuring Ranges:
Modes:
Electrical Classification:
Pressure Limits:
Warranty:
Length:
Height:
Width:
Weight:
Mounting Holes:
Input Power:
Power Consumption
Relay Ratings:
(Optional)
Analog Signal:
Status Indicators:
RS-485 Output:
(Optional)
Baud Rate:
Faults Monitored:
RFI/EMI Protection:
Continuous diffusion, low temperature catalytic bead
3 to 5 years typical
+3% LEL up to 50% LEL
+5% LEL > 51% LEL
Less than 5% of full scale per year
T50<10 sec. T90<30 sec. with 100% LEL methane applied
0-100% LEL
Calibration, gas check, setup
CSA/FM: Class I, Division 1, Groups B, C, D and Class I,
Zone 1, Ex d IIB+H
2
, T6.
ATEX: II 2 G EEx d IIB T5 (Tamb=-40°C to +70°C) EN
61779-1
Up to 3 Atmospheres, sensor requires 15 minutes from start up to stablize
Two years
6.4 inches (161mm)
3.4 inches (86mm)
4.1 inches (104mm)
5.5 lbs. (2.5 kg)
5.0 inches (127mm) (center to center)
24 VDC nominal, 20 to 36 VDC, 250mA max.
Start-up 280mA, Normal Operation 160mA
8A @ 250 VAC/8A @ 30 VDC resistive max.
(3x) SPDT - Warning, Alarm & Fault
0-20mA (650 ohms max. load)
Malfunction 0mA
Calibration 1.5mA
Gas Check 1.5mA
Setup mode 1.5mA
Startup 4mA+0.2mA
Zero reading 4mA+0.2mA
0-100% LEL 4-20mA
Over-range 20-22mA
Three-digit digital display with gas concentration, Warn and Alarm LED’s, calibration prompts, fault codes, and setup options
Dual Redundant MODBUS RTU, suitable for linking
Up to 128 units or up to 247 units with repeaters
2400, 4800, 9600, or 19200 BPS
Calibration error, open AO, sensor error, low DC supply,
EEPROM, EPROM, setup error, gas check time exceeded, switch error
Complies with EN50081-2, EN50082-2
37
S4000C
Cable Requirements:
3-wire shielded cable. Max. distance between S4000C and power source @ 24VDC nominal
(20 ohm loop):
AWG FEET METERS
14 3430 1040
16 1900 580
18 1500 460
20 1000 300
Table 17: 24VDC Cable Lengths
Max. distance for analog output (650 ohms max):
AWG FEET METERS
14 9000 2740
16 5200 1585
18 3800 1160
20 2400 730
Table 18: Analog Output Cable Lengths
Max. Distance between the transmitter and sensor with one-way resistance of 20Ohms (40-
Ohm loop):
AWG FEET METERS
14 7600 2320
16 4800 1460
18 3000 910
20 1900 580
Table 19: Sensor Cable Lengths
European Union (EU) Approved Applications: PSU noise and ripple voltage 1.0Vpp max. The customer supplied PSU must comply with IEC 61010-1, limiting current to 8A under Fault conditions, in order to comply with CE Marking requirements.
Operating Temperature Range:
CSA/FM/ATEX:
Electronics
Standard Sensor
-40°F to 167°F (-40°C to +75°C)
-65°F to 200°F (-55°C to +93°C)
High Temp Sensor
ATEX:
Electronics (T5)
Storage Temperature Range:
Operating Humidity Range:
Atmosphere:
-65°F to 400°F (-55°C to +200°C)
-40° F to 158° F (-40°C to +70°C)
-58°F to 185°F (-50°C to +85°C)
5% to 100% RH, non-condensing
Will not operate in <5% Oxygen
Oxygen enriched reading may be slightly higher
38
S4000C
9.4 Approvals
CSA, FM, ATEX approved.
Complies with ANSI/ISA-12.13.01-2000 performance requirements
1,3- Butadiene
9.5 Sensitivities to Other Gases
The S4000C responds to the following list of hydrocarbons up to C10
Injection volumes
1-Butene (Butylene)
Carbon Monoxide
Ethylene Oxide
Ethylene (Ethene)
Propylene (Propene)
Vinyl Chloride
(Chloroethylene)
2.0
1.6
12.5
3.0
2.7
2.0
54.1
56.1
28.0
44.0
28.1
42.1
Cal Ratio
0.8
225.0 1.3
30.0 ml 50.0 ml 0.8
1.1
1.7
*** 1.1
*** ml 0.7 0.9
0.6 0.8
*** 24.0 ml 40.0 ml 0.7 0.9
*** 187.5 ml
42.5 ml
45.0 ml
45.0 ml
312.5 ml
70.0 ml
0.7
0.7
0.7
0.9
0.6
0.9
0.9
0.9
1.2
0.8
*** ml 0.8 1.1
*** 45.0 ml 75.0 ml 1.0 1.3
*** 40.5 ml 67.5 ml 0.8 1.1
1.1
***
1.3
31.5 1.0
30.0 ml 50.0 ml
50.0 ml
0.8
0.6
1.0
0.8
0.7 0.9
Acetaldehyde
Acetic Acid
Acetone
Acetonitrile
Acrylonitrile
Amyl Acetate
Benzene
Butyl Acetate
Butyl Alcohol (1- Butanol) sec-Butyl Alcohol (2-Butanol) tert- Butyl Alcohol
1.7
2.4
Diethyl Ketone (3-Pentanone)
Ethanol (Ethyl Alcohol)
1.6
3.3
74.1
74.1
84.2 86 ul
86.1 0.8 103 ul
46.1
0.8
0.8
95 ul
138 ul
159 ul
231 ul
171 ul
143 ul
173 ul
0.5
0.4
0.4
0.7
0.5
0.6
0.5
0.5
0.7
0.7
0.5
0.6
0.7
0.8
0.3
0.6
0.8 118 ul 198 ul
39
0.7
0.5
0.5
1.0
0.7
0.8
0.7
0.6
1.0
0.9
0.7
0.8
0.9
1.1
0.4
0.8
Ethyl Acetate
Ethyl Amine
Ethyl Benzene
Ethyl Ether
Isopentane (2-Methylbutane)
Isoprene (2-Methyl-1, 3-
Butadiene)
JP-4 (Jet fuel mainly
Kerosene)
Methanol (Methyl Alcohol)
Methyl Ethyl Ketone (2-
Butanone)
Methyl Methacrylate
Methyl-t-Butyl Ether(MTBE)
Naphtha (Petroleum Ether)
2.0
3.5
0.8
1.9
88.1
45.1
106.2
72.2
0.9
0.7
0.9
0.7
119 ul
140 ul
60 ul
120 ul
199 ul
234 ul
100 ul
200 ul
0.6
0.5
0.5
0.7
107 0.5
0.5
86 0.5
99 ul 166 ul 0.6 1.4 72.2 0.6
1.5 68.1 0.7
89 ul
1.3 184.4 0.8
6.0 32.0 0.8
1.4 72.1 0.8
183 ul
148 ul
1.70
1.5
1.1
100.1
88.2
86.2
0.9
0.7
0.6
76 ul
111 ul
109 ul
96 ul
149 ul
306 ul
248 ul
128 ul
186 ul
182 ul
161 ul
0.6
0.3
0.8
0.6
0.6
0.6
0.6
0.6
2-Propanol (Isopropyl
Alcohol)
Propanol (Propyl Alcohol)
Propylene Oxide
Styrene (Vinyl Benzene)
2.0 60.1 0.8
2.2
2.3
0.9
60.1
Propylacetate 1.7
58.1
104.2
0.8
1.0
0.8
0.9
93 ul
100 ul
106 ul
98 ul
63 ul
156 ul
168 ul
177 ul
172 ul
164 ul
105 ul
166 ul
1,1,1-Toluene
(Methylbenzene, Toluol) p- Xylene m- Xylene
1.1 101.2 0.9
Triethylamine 1.2
1.1
1.1
106.2
106.2
0.9
0.9
99 ul
78 ul
102 ul
131 ul
171 ul
0.5
0.6
83 ul 139 ul
0.4
0.4
83 ul 139 ul 0.4
83 0.4
0.6
0.6
0.5
0.6
0.7
0.5
0.7
Table 20: Chemical List from1994 NFPA
S4000C
0.4
1.1
0.8
0.7
0.8
0.8
0.6
0.8
0.8
0.7
0.7
0.8
1.0
0.6
0.9
0.7
0.8
0.5
0.5
0.5
0.5
0.8
0.6
0.6
0.9
0.7
0.6
0.6
0.8
0.8
40
S4000C
9.6 Spare Parts and Accessories
To order spare parts and/or accessories, please contact your nearest General Monitors representative, or General Monitors directly, and give the following information:
• Part Number of Spare Part or Accessory
• Description of Spare Part or Accessory
• Quantity of Spare Part or Accessory
9.6.1 Sensors
10014-1R
10022-1
10058-1
10058-1R
10391-1
10391-1R
10387-4
10164-1
11159-1L
11159-2L
Poison Resistant High Temp
Standard Industrial Hydrocarbon High Temp PTB
Standard Industrial Stainless Steel, Hydrocarbon
Standard Industrial Stainless Steel, Hydrocarbon, Poison Resistant
High Temp, Stainless Steel
High Temp, Stainless Steel, Poison Resistant
Sensor Assembly, Standard Hydrocarbon, Super Poison Resistant
Sensor Assembly, Hydrogen Specific
General Purpose, SST, Sintered Steel Arrestor
General Purpose, SST, High Temp, Sintered Steel Arrestor
B13-020 or B13-021 Sensor Housing
10460-2
10041-1
10044-1
10042-1
Test Gas Applicator
Duct Mounting Plate
Dust Guard Kit - 1 Guard, 12 Replaceable Screens
Replaceable Screens, Box of 12
10395-1 Splash Guard Assembly
50060-1 H
2
S Guard Filter
50061-1 Purafil Insert Assembly
10110-1
1800822
Dust Guard Assembly
Dust Guard, Sintered SST
10543-1
928-700
928-715
1400150-M
1400150-H
1400150-BD
1400150-PR
1400155-M
1400155-H
3-Liter Calibration Chamber with 250
μL Syringe
Dish for the 3- Liter Chamber
250
μL microliter syringe
Portable Purge Calibrator, Methane @ 50% LEL
Portable Purge Calibrator, Hydrogen @ 50% LEL
Portable Purge Calibrator, Butadiene @ 50% LEL
Portable Purge Calibrator, Propane @ 50% LEL
Replacement Cylinder, Methane @ 50% LEL
Replacement Cylinder, Hydrogen @ 50% LEL
41
S4000C
1400155-BD
1400155-PR
Replacement Cylinder, Butadiene @ 50% LEL
Replacement Cylinder, Propane @ 50% LEL
Cylinder refills are available for Methane and Hydrogen only. Replacement cylinders must be ordered for the other gases.
922-009
1400152-1
Pressure Regulator Gauge
Small Calibration Cup
1400154 Large Calibration Cup
925-026 Tubing
31146-1
31151-1
31156-1
31170-1
31195-2
Control Board Electronics
Output Board Electronics
Display Board Electronics
Enclosure Cover Assembly with Window
Enclosure Base Assembly
925-5007 Cover Assy. O-Ring
9.6.6 Recommended Spare Parts for One (1) Year
30060-1 Extra Calibration Magnet (Qty. 1)
42
S4000C
9.7 FMRC Approval
Factory Mutual Research Corporation
1151 Boston-Providence Turnpike
Norwood, Massachusetts 02062
Approval of the transmitter does not include, or imply, approval of apparatus to which the transmitter may be connected and which processes the electronic signal for the eventual end use. In order to maintain FMRC approved system, the control instrument, to which the subject instrument is connected, must be FMRC approved.
The following sensors have been FMRC approved for use with the Model S4000C:
• 10001-1 Aluminum Body General Purpose Combustible Gas Sensor
• 10058-1 Stainless Steel Body General Purpose Combustible Gas Sensor
The following apparatus have been FMRC approved (although they have not been verified as part of a Model S4000C system):
• Model DC110 Eight Channel Readout/Relay Display Module
• Model DC130 Dual Channel Readout/Relay Display Module
Factory Mutual Research Corporation has tested the Model S4000C according to the criteria listed under the FMRC Approval Standards for Combustible Gas Detectors, Class Numbers
6310 & 6320.
FMRC has tested the Model S4000C using the specifications listed in Section 9.2. This permits an operating temperature of -40°F to +167°F (-40°C to +75°C), a general purpose sensor
(10001-1 or 10058-1) attached to the housing (i.e. not remote), calibration performed with a
General Monitors’ Portable Purge Calibrator using 50% LEL gas (Methane, Hydrogen,
Butadiene, Butane, Ethane or Propane) and the procedure listed in Section 4.5. The conduit containing wires connected to the relay contacts must be sealed. If the non-latching relay option has been selected from the relay options, the user must provide alternate means of latching the relay output.
43
S4000C
ADDENDUM
Product Disposal Considerations
This product may contain hazardous and/or toxic substances.
EU Member states shall dispose according to WEEE regulations. For further General Monitors’ product
WEEE disposal information please visit:
www.generalmonitors.com/customer_support/faq_general.html
All other countries or states: please dispose of in accordance with existing federal, state and local environmental control regulations
.
44
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