Installation and User Instructions for the MF020 Series High

Installation and User Instructions for the MF020 Series High
Installation and User Instructions for the
MF020 Series High Temperature Oxygen
Sensors
WARNING
PERSONAL INJURY
DO NOT USE these products as safety or emergency stop
devices or in any other application where failure of the
product could result in personal injury.
Failure to comply with these instructions could result in
death or serious injury.
1.0
GENERAL INFORMATION
WARNING
IMPROPER INSTALLATION, OPERATION AND
MAINTENANCE
• Strictly adhere to all installation instructions.
• Consult with US and/or European agencies, as well as
local regulations, and their requirements when designing
sensor control and interface elements.
• Ensure all sensor installation, operation and
maintenance is carried out by properly qualified
personnel.
• Ensure damaged sensors are repaired by the
manufacturer only.
Failure to comply with these instructions could result in
death or serious injury.
1.1
Product use
WARNING
IMPROPER USE
• Do not use the sensor where combustible or explosive
gas mixtures are likely to occur.
• Do not use the sensor to determine the oxygen
concentration in a hydrogen atmosphere.
• Ensure the sensor’s output signals are read and
processed by a user-specified external monitoring
device.
Failure to comply with these instructions could result in
death or serious injury.
The MF020 Series High Temperature Oxygen Sensor is
designed to determine the oxygen concentration in air or inert
gas mixtures with temperatures from -100 °C to 400 °C
[-148 °F to 752 °F] max.
Standard measuring ranges are:
•
0.1 vol%O2 to 25 vol%O2
•
0.1 vol%O2 to 100 vol%O2
The entire measurement range is linear.
Sensing and Control
ISSUE 2
50030542
1.2
Product description
The actual oxygen sensor is mounted in the tip of the bar
probe and is protected by a stainless-steel sintered disk which
serves as a flame back-flash stop. The water-proof plastic
housing accommodates the electronics and is mechanically
connected to the sensor bar probe.
Sensor electronics include:
1. Signal amplifier
2. Control for the ionic pump with an analog component
3. Test component
4. Internal monitoring logic component
5. Power supply for the sensor heating element as well as for
the analog and digital component
6. Reset
7. Voltage monitor
8. Analog output
9. Bi-directional digital output
10. Internal potentiometer
1.3
Operation overview
Measurement is based on a dynamic process that occurs on
two zirconium dioxide discs which form a hermetically sealed
chamber.
The sensor outputs measured values via an analog channel
(4 mA to 20 mA or 0 V to 10 V) and a digital channel (also
provides any error signals) which are evaluated and further
processed in a user-specified external mounting device such
as a fuel controller, display, measuring instrument,
programmable logic controller or a ventilation system.
The MF020 Series may be calibrated manually or selfcalibrated using atmospheric air instead of a reference gas.
The sensor can also conduct external operational self-tests.
The MF020 Series can also operate in a fault-proof mode. The
sensor self-monitors during operation and provides error signal
output. A second oxygen sensor is not necessary.
MF020 Series
1.4
Pollutants
CAUTION
PRODUCT DAMAGE
•
Ensure the gas mixture to be measured contains none of
the following substances:
− Heavy metals
− Sulphuric compounds
− Silicone vapors
− Fluorine
− NH3 (as of 1000 ppm)
− Halogenated hydrocarbons (as of 100 ppm)
− Phosphate ester
− Chlorine
− SF6
− Carbons
− Salts
• Do not store materials containing silicone, heavy metals
and/or saline in the same room as the sensor.
• Do not subject sensor to dust, vibrations, dirt, humidity,
oils, greases, furnace cleaning agents, heavy gas oil,
pyrolysis gases and silicon oxide (generated when
silicones burn in a furnace), or long periods in a reduction
atmosphere.
Failure to comply with these instructions may result in
product damage.
1.5
Other required equipment (see Figure 1.)
FIGURE 1. SYSTEM BLOCK DIAGRAM
2 Honeywell • Sensing and Control
Issue 2
50030542
1.5.1
User-specified external monitoring device
A user-specified external monitoring device is needed to
evaluate the measured signals as well as to manage and
monitor the periodic self-tests. This device also manages error
signal response.
Ensure the user-specified external monitoring device meets the
following requirements:
• The device must be fault-proof, i.e. the processes described
below must be carried out without any errors, the input
signals must be read-in without errors and the output
signals must output without errors.
• Channel 1 and Channel 2 measured values must be
compared permanently within the fault tolerance time
permissible for the application.
• Channel 2 output signal timing must be checked constantly.
In this respect, static signals are to be considered internal
errors.
• A self-test must be initiated periodically and its effects on
the measured signal must be determined and evaluated.
The time interval between two test cycles must not exceed
a certain value.
1.5.2
Connection cable (connects sensor to userspecified external monitoring device)
Ensure the connection cable meets the following requirements:
• Permanent, six-core and shielded, with a diameter of 9 mm
to 11 mm. [0.35 in to 0.43 in].
• Capable of withstanding expected mechanical, chemical
and thermal conditions.
MF020 Series
Issue 2
50030542
TABLE 1. SPECIFICATIONS
Characteristic
Catalog Listing
MF020-0-LC4
MF020-0-LC3
MF020-0-LC2
MF020-1-LC4
MF020-1-LC3
MF020-1-LC2
MF020-2-LC4
MF020-2-LC3
MF020-2-LC2
-100 °C to 400 °C [-148 °F to 752 °F]
0 Vdc to 10 Vdc
4 mA to 20 mA
1 mbar to 1000 mbar
1 mbar to 250 mbar
1 mbar to 250 mbar
1 mbar to 1000 mbar
0.1 vol%O2 to 25 vol%O2 0.1 vol%O2 to 100 %volO2 0.1 vol%O2 to 25 vol%O2 0.1 vol%O2 to 100 vol%O2
MF020-0-LC1
MF020-1-LC1
MF020-2-LC1
Temperature range at probe tip
Output
O2 range (O2 partial pressure)
with equivalent O2 output
Probe length:
-0-LXX
-1-LXX
-2-LXX
220 mm [8.7 in]
400 mm [15.7 in]
600 mm [23.6 in]
Characteristic
Supply voltage
Supply current
Ambient temperature (includes solar radiation
Resolution
Heat-up time
Accuracy
Reproducibility
Gas flow rate
Exhaust gas speed
Reaction time
Repetitive permissible acceleration
Incidental permissible acceleration
Bar probe material
Housing material
Housing sealing
Connector sealing
Weight (without bar probe)
Termination (female connector)
Certification
Parameter
24 Vdc ±5%
500 mA
-10° C to 50° C [14 °F to 122 °F]
12 bit
approx. 10 min
±2% FS (Full Scale)
±1% FS (Full Scale)
0 m/s to 10 m/s
5 m/s max.
approx. 3 s
5g
30 g
stainless steel 1.4301
Makrolon 8030 (30% GV), UL94 V-1
IP65
IP67
150 g [5.3 oz]
99-4226-14-07 (Binder 693 series)
complies with EMC directives EN 50082-2 and EN 50081-1 and directives
89/336/EWG and 92/31/EWG
FIGURE 2: DIMENSIONAL DRAWING AND PINOUT (For reference only: mm/in.)
105,0
[4.13]
Varies with catalog listing.
(See Table 1.)
88,0
[3.46]
27,7
[1.09]
17,5
[0.69]
21,0
[0.83]
30,0
[1.18] 35,5
[1.38] 42,5
[1.67]
60,0
[2.36]
14,0
[0.55]
21,0
[0.83]
Ø26,5
[1.04]
Ø12,0
[0.47]
Ø9,0
[0.35]
42,0
[1.65]
Ø0,21
[5.3]
Honeywell • Sensing and Control 3
MF020 Series
2.0
Issue 2
2.2
Mount/install user-specified external monitoring
device
INSTALLATION
CAUTION
IMPROPER INSTALLATION
Ensure the following installation conditions are met:
• Housing ambient temperature is -10° C to 50° C [-14 °F to
122° F]. (Includes solar radiation.)
• Bar probe ambient temperature is -100 °C to 400 °C [-148
°F to 752 °F].
• Sensor housing is visible and accessible at all times.
• Sensor is protected from the weather if mounted
outdoors.
• Sensor does not come into contact with water, including
condensate.
• Sensor does not come into contact with dust (may block
the filter at the bar probe).
• None of the pollutants listed in Section 1.4 are present in
the gas mixture to be measured.
• Bar probe is not mounted in humid or hazardous areas
where combustible or explosive gas mixtures are likely to
occur.
• There is no ground leakage current.
Failure to comply with these instructions may result in
product damage.
2.1
Mount sensor
Mount the sensor using standard available 12 mm [0.47 in]
pipe fittings so that the bar probe projects through the partition
directly into the gas mixture to be measured (e.g. gas pipe,
chimney, container). Ensure the housing remains on the same
side of the partition as the atmospheric air (see Figures 2 and
3.)
FIGURE 3: SENSOR INSTALLATION
Partition
Housing
50030542
Atmospheric Air
50 °C [122 °F] Max.
Bar Probe
Bar Probe
O-Ring
Nut
Weld Socket
4 Honeywell • Sensing and Control
ELECTRICAL CONNECTION
DANGER
ELECTROCUTION
• Do not allow contact with water.
• Disconnect the mains voltage prior to installation.
• Disconnect power supply before performing repairs or
opening product housing.
Failure to comply with these instructions will result in
death or serious injury.
WARNING
IMPROPER ELECTRICAL CONNECTION
• Ensure sensor is connected to suitable power supply.
• Ensure suitable fuse protection suitable for the power
supply is provided.
• Ensure power is always supplied to the sensor to avoid
the formation of condensate.
• Do not locate power and connection cables next to each
other.
Failure to comply with these instructions could result in
death or serious injury.
3.1
Connect sensor and user-specified external
monitoring device
Use connector cable described in Section 1.5.2.
3.1.1
Connection for basic operation
• Connect sensor to the electric circuit via Pin 1, Pin 2 and
Pin 7 (see Fig. 2).
• Read off the measured data via Pin 5 (4 mA to 20 mA or
0 V to 10 V) from the user-specified external monitoring
device.
Gas Mixture
400 °C [752 °F] Max.
15°
Partition
3.0
3.1.2
Connection for fault-proof operation
• Connect sensor to the electric circuit via Pin 1, Pin 2 and
Pin 7 (see Fig. 2).
• Read off the measured data via Pin 5 (4 mA to 20 mA or
0 V to 10 V) from the user-specified external monitoring
device.
• Connect Pin 4 (test channel) and Pin 6 (digital output).
• The user-specified external monitoring device evaluates
and processes the measured signals. Sensor output signal
is 4 mA to 20 mA or 0 V to 10 V.
MF020 Series
4. 0
OPERATION
Issue 2
50030542
FIGURE 4: CHANNEL 2 OUTPUT SIGNALS
WARNING
PERSONAL INJURY AND/OR FIRE HAZARD
• Wear protective gloves when working around hot bar
probe.
• Protect hot bar probe with a touch guard (e.g. perforated
plate, not provided).
• Ensure a safety distance between the bar probe and
inflammable materials.
Failure to comply with these instructions could result
in death or serious injury.
4.1
Start-up
4.1.1
Ensure the following tasks are complete:
• Sensor is installed and connected.
• Sensor housing is accessible and visible.
• Ambient conditions have been taken into account.
• Power supply is on.
4.1.2
Conduct measured values test as follows:
• Thoroughly ventilate the bar probe surroundings (e.g.
chimney, container) until fresh atmospheric air is present.
• Check the measured value on the user-specified external
monitoring device. A value of is 20.7 vol%O2 ±1%O2 of FS
(0.25%) indicates the sensor is ready for operation.
TABLE 2: SENSOR ERROR SIGNALS
(0.1 vol%O2 to 100 vol%O2)
Sensor Ready for Operation
State
Normal Operation 4 mA to 20
(test switch open) mA or
0 V to 10 V
External
Operational Test
(switch closed,
+24 V)
4.2.1
Output
• Channel 1 linear analog signal is 4 mA to 20 mA or 0 V to
10 V:
− 17.25 mA (8.28 V) corresponds to 20.7 vol%O2
− 20 mA (10 V) corresponds to 25 vol%O2
• Channel 2 digital signal is a pulse-width modulated
alternating signal (high phase 5 V, low phase 0 V). The low
phase duration is the oxygen measurement concentration
and is indicated by the user-specified external monitoring
device:
− 0.09 s corresponds to 0.1 vol%O2
− 0.71 s corresponds to 25 vol%O2
>20%
decrease
Channel 2
Measured
Signal
(Digital)
Channels 1-2
Measured
Signal
Difference
low phase + high
phase = 0.2 s to 4 s
4% max.
>20% decrease
4% max.
Channel 2
Measured
Signal
Channels 1-2
Measured
Signal
Difference
Sensor Out of Order
State
4.2
Output and error signals (see Fig. 4 and Table 2)
The sensor outputs two measuring signals via two different
channels. These signals must be read and processed by the
user-specified external monitoring device.
Channel 1
Measured
Signal
(Analog)
Channel 1
Measured
Signal
Normal Operation —
(test switch open)
External
Operational Test
(switch closed,
+24 V)
>4%
• no signal
• low phase + high
phase <0.2 s or >4 s
<20%
decrease
<20% decrease
>4%
4.2.1
Error signals
• Digital signal (low + high) does not equal 0.2 s to 4 s (10%
error tolerance), or is constant at 5 V indicates the
measured value is outside the measuring range.
• Digital signal is constant at 0 V indicates the hardware is
defective. Please notify the manufacturer and replace the
device.
Honeywell • Sensing and Control 5
MF020 Series
5.0
CALIBRATION
NOTICE
The sensor measures the oxygen partial pressure. According
to Dalton’s Law, the oxygen partial pressure depends on the
air pressure and relative humidity. Strong fluctuations of these
parameters will affect calibration.
The sensor is designed so that no additional calibration is
needed, even during long periods of operation. However, if
necessary, a manual or a self calibration may be conducted.
5.1
Manual calibration
Manual calibration is conducted using an internal
potentiometer (See Figure 5) located inside the sensor
housing:
1. Thoroughly ventilate the bar probe surroundings (e.g.
chimney, container) until fresh atmospheric air is present
(20.7 vol%O2 ±10%). The atmospheric air serves as
reference gas.
2. Ensure the voltage supply is lower than 28 V.
3. Remove the sensor housing.
4. Using a slot screwdriver, turn the potentiometer screw
(See Figure 5) until Channel 1 emits a current signal of
17.25 mA or a voltage signal of 8.28 V.
5. Replace the sensor housing.
FIGURE 5: INTERNAL POTENTIOMETER
Issue 2
50030542
5.2
Self-calibration (only possible in the 0.1 vol%O2 to
25 vol%O2 measuring range)
The sensor self calibrates in atmospheric air (20.7 vol%O2
±10%). In the event of a voltage cutoff, the newly-calibrated
value will be saved.
1. Ensure Pin 6 is connected.
2. Thoroughly ventilate the bar probe surroundings (e.g.
chimney, container) until fresh atmospheric air is present
(20.7 vol%O2 ±10%). The atmospheric air serves as
reference gas.
3. Use the user-specified external monitoring device to close
switch S (Pin 6 or Channel 2) for at least 10 s. The sensor
will now self-calibrate:
• Alternating Channel 2 output signal indicates measured
oxygen concentration is within 10% error tolerance.
• Constant 5 V Channel 2 output signal indicates
measured oxygen concentration is outside 10% error
tolerance. Ensure sensor is exposed to enough
atmospheric air and repeat calibration procedure. If
constant 5 V continues, notify the manufacturer and
replace the sensor.
4. After successful calibration, the sensor corrects Channel 1
to:
• 17.25 mA = 20.7 vol%O2
• 20 mA = 25 vol%O2
5.3
External operational self-test requirements
1. Ensure Pin 4 and Pin 6 are connected.
2. Apply +24 V to Pin 4 to simulate a lower oxygen
concentration than actually exists at the bar probe. The
measured signals at the digital and analog outputs must
drop equally by at least 20%. If this does not occur, then
the bar probe is defective and must be replaced.
3. Disconnect the +24 V after the test is complete.
4. Conduct this test periodically.
5.3
Fault-proof operation
5.3.1
Requirements
• Channel 1 analog signal corresponds to Channel 2 digital
signal (4% max. difference).
• Channel 2 signal low phase is 0.09 s to 0.71 s, which
corresponds to an oxygen concentration of 0.1 vol%O2 or
25 vol%O2. (At a different measuring range the values
change accordingly.)
5.3.2
Error signals
• Digital signal (low + high) does not equal 0.2 s to 4 s (10%
error tolerance), or is constant at 5 V, means the measured
value is outside the measuring range.
• Digital signal is constant at 0 V means the hardware is
defective. Please notify the manufacturer and replace the
device.
6 Honeywell • Sensing and Control
MF020 Series
6.0
MAINTENANCE AND SERVICE
DANGER
ELECTROCUTION
• Do not allow contact with water.
• Disconnect the mains voltage prior to installation.
• Disconnect power supply before performing repairs or
opening product housing.
Failure to comply with these instructions will result in
death or serious injury.
WARNING
IMPROPER MAINTENANCE
Ensure maintenance is carried out by qualified personnel.
Failure to comply with these instructions could result in
death or serious injury.
Issue 2
50030542
6.2
Shutdown
Switch off the mains voltage. Refer to Section 6.4 for storage
conditions.
6.3
Packaging and transport
The sensor contains sensitive electronic components. When
returning the sensor, use appropriate packaging according to
applicable regulations.
6.4
Storage
The sensor may be stored in a packed state in a dry
environment between 10 °C and 50 °C [50 °F to 122 °F].
Protect the sensor against moisture, humidity, dust and dirt.
6.5
Disposal
Ensure inoperable sensors are rendered unusable
immediately. Dispose of according to regulations.
6.1
Maintenance checklist
Ensure the following:
• The sensor and connecting cable are checked by qualified
personnel at least every six months and a servicing report is
prepared.
• Periodic maintenance intervals are adapted to local safety
requirements.
• Check the measured value after each operation interruption.
If the measured value is 20.7 vol% ±1% of FS (0.25%), the
device is ready for operation. If the measured value is
outside this range, calibrate the sensor and conduct an
external functional test. Inform the manufacturer or dealer
or, if possible.
• Ensure the measured value is checked, the sensor
calibrated and an external functional test is performed after
every fault message.
• Ensure the sensor and its surroundings are always clean,
accessible and visible.
Honeywell • Sensing and Control 7
MF020 Series
Issue 2
WARRANTY/REMEDY
Honeywell warrants goods of its manufacture as being free of
defective materials and faulty workmanship. Honeywell’s
standard product warranty applies unless agreed to otherwise
by Honeywell in writing; please refer to your order
acknowledgement or consult your local sales office for specific
warranty details. If warranted goods are returned to Honeywell
during the period of coverage, Honeywell will repair or replace,
at its option, without charge those items it finds defective. The
foregoing is buyer’s sole remedy and is in lieu of all other
warranties, expressed or implied, including those of
merchantability and fitness for a particular purpose. In no
event shall Honeywell be liable for consequential, special,
or indirect damages.
While we provide application assistance personally, through
our literature and the Honeywell web site, it is up to the
customer to determine the suitability of the product in the
application.
Specifications may change without notice. The information we
supply is believed to be accurate and reliable as of this printing.
However, we assume no responsibility for its use.
SALES AND SERVICE
Honeywell serves its customers through a worldwide network
of sales offices, representatives and distributors. For
application assistance, current specifications, pricing or name
of the nearest Authorized Distributor, contact your local sales
office or:
E-mail: info.sc@honeywell.com
Internet: www.honeywell.com/sensing
Phone and Fax:
Asia Pacific
+65 6355-2828
+65 6445-3033 Fax
Europe
+44 (0) 1698 481481
+44 (0) 1698 481676 Fax
Latin America
+1-305-805-8188
+1-305-883-8257 Fax
USA/Canada
+1-800-537-6945
+1-815-235-6847
+1-815-235-6545 Fax
Sensing and Control
Honeywell
1985 Douglas Drive North
Minneapolis, MN 55422
www.honeywell.com/sensing
50030542
50030542-2-EN IL50 GLO Printed in USA
August 2008
Copyright © 2008 Honeywell International Inc. All rights reserved.
Was this manual useful for you? yes no
Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Download PDF

advertising