Model CO (M) - Filtered 3-Electrode Carbon Monoxide Sensor For The Detection of 0-1000ppm
From Gas Sensor Range
Physical Specification: Weight: 5g (approx). Housing Material: Noryl 110. Storage Life: 6 months in sealed container. Storage Conditions: 10°C to +30°C. Orientation: Any. Warranty Period: 18 months from date of despatch.
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Operating Performance
Operating Principle: 3-electrode electrochemical
Gas Detected: CarDon Monoxide
Measurement Range: 0-1000 ppm
Maximum Overload2: 2000 ppm
Expected Operating Life: 2 years in air
Output Signal: 0.07 +0.015|iA per ppm
Temperature Range: Continuous: -20'C to +40°C
Intermittent: -40°C to +55°C
Pressure Range: 1 atm ±10%
Humidity Range (non-condensing): Continuous: 15 - 90%
Intermittent: 0 - 99%
Response Time (T5 90): <30 seconds
Baseline Offset (clean air): <±5.0ppm equivalent
Zero Shift (-40 to +55°C): <±3.0ppm equivalent
Long Term Output Drift: <5% per annum
Repeatability: <±3%
Linearity: Linear +<5%
Recommended Load Resistor: 5Q
Bias Voltage: Not required
Intrinsic Safety Data
Maximum at 2000ppm: 0.2mA
Maximum o/c Voltage: 1.3V
Maximum s/c Current: <1.0A
4-20mA Board For Surecell
- With SureCell Carbon Monoxide CO (M): range 0-1000 ppm
- With SureCell Hydrogen Sulphide H2S (L): range 0-200 ppm
- With SureCell Chlorine Cl2: range 0-20 ppm
Output signal: 4 - 20 mA using two-wire technology
Features
Electronic transmitter
designed to equivalent sensors
Measuring signal 4 - 20 mA
Calibration on required range
User Benefits
Immediate use and evaluation of electrochemical SureCells
Standard interface
Equivalent to specification
4-20mA Board For Surecell
Specification
Measuring principle: Electrochemical
Operation: continuous
Gas entry: by diffusion
Range: CO: calibratable up to 1000 ppm CO f.s.d.
H2S: calibratable up to 200 ppm H2S f.s.d.
Cl2: calibratable up to 20 ppm Cl2 f.s.d.
Repeatability: CO: < ± 3% of signal
H2S: < ± 3% of signal
Cl2: < ± 5% of signal
Response time:CO: t^ < 30 sec
H2S: toQ< 10 sec
Cl2: t^ < 60 sec
Cross sensitivity: see equivalent sensor data sheet
Linearity: CO: CO: < ± 5% of nominal value
H2S: < ± 5% of nominal value
Cl2: < ± 3% of nominal value
Temperature range: -20°C to +40°C
Humidity range (non- condensing):15-90% r.H.
Operating voltage: 24 V ± 10% d.c.
Output signal: 4-20 mA, two-wire; max. load 500 Q Ohms, at 24 V d.c. (+/-4V)
Zero adjustment: via potentiometer
Span adjustment: via potentiometer
RFI: according EN 50082
Storage conditions: + 10°C to +30 °C
Mechanical design: SureCell sensor plugged into transmitter and surrounded by installation ring
Dimensions: 40 mm 0, 55 mm high
Warranty period: 6 months from despatch date
Operating Instructions for SureCell Sensors: (CO(M), H2S(L) or CL2) + 4-20 mA pcb
Two wire screw ter|minal: The transmitter has a two wire screw terminal to connect a 24V d.c. power supply. There is no polarity requirement across the two screw terminals (i.e. there is no +/- logic). On the same two wires, you will receive the 4-20 mA signal output. The transmitter is precalibrated on:
With SureCell CO (M): 0-1000ppm CO range
With SureCell H2S (L): 0-200ppm H2S range
With SureCell Cl2: 0-20ppm Cl2 range
When there is zero gas concentration, you will receive a 4mA signal. With the full concentration, you will receive a 20mA signal.
Potentiometer: This is used for adjusting the signal to the correct value if you apply a test gas concentration to the transmitter and it gives an incorrect signal.
Test pins: The two test pins allow for one man calibration. Please kindly note that the signal here is not 4-20 mA but 0.4 - 2.0 Volts.
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