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Prime1 High Resolution Infrared Methane Sensor CH4 Sensor 0-100% Vol

Post Date:

2018/12/13 17:40:05

Expired Date:

2019/03/13 23:59:59

Trade Leads Category:

Gas Sensors

Company Info

Shenzhen Week Technology Ltd.
Contact Person: Yan Zhang
Address: 16 Floor, Building #3, Zhongke Mansion, Gaoxin South 1St Rd, Hi-Tech Park, Nanshan
State/Province: GUANGDONG
Country/Region: China (mainland)
Zip/Post Code: 518067


Prime1 Infrared Methane Sensor CH4 Sensor Description and Operation
The Prime1 sensor uses the non-dispersive infrared method to detect the presence of hydrocarbon gases. Thesensor contains an infrared radiation source, a dual element custom infrared detector, a unique optical waveguide into which gas diffuses and internal ARM7 core microprocessor based electronics to provide a voltage output which is independent of the power supply polarity. The sensors can be configured to provide a pellistor format output, typically mid supply at zero with the voltage output increasing with respect to the detector pin by 100mV at range, or a linear voltage output, typically 0.4V – 2.0V over range with respect to the negative supply pin. In addition, the output can be read and the internal configuration can be accessed by a serial communications link.

The communication link contacts are pads in the 3 pin version Prime1 and pins in the 5 pin version Prime1. Theinternal electronics perform all the functions of driving the optical parts of the sensor, extracting the detectorsignals, converting the signals to a concentration, applying temperature compensation and scaling the output.When in a pellistor configuration, the Prime1 can replace catalytic sensors in existing circuitry subject to thepower supply requirements. External components will be required to meet the power supply requirement when aPrime1 is used in constant current pellistor circuitry. The Prime1 is not currently Ex approved so should behoused in a suitable Ex enclosure when used in Hazardous areas.


Prime1 Infrared Methane Sensor CH4 Sensor Features
• High Resolution of 0.01%vol for 0 - 10% vol and 0.1% vol for 10 - 100% vol
• Operates independent of supply polarity
• Pellistor mimic Bridge or linear voltage output
• Operating voltage range 3.0V - 5.0V
• Operating current 80mA typical
• Latest technology MEMS detectors
• Sensing ranges: 0-100% LEL Methane, 0-100% LEL Hydrocarbons or 0-100% Volume Methane
• Default range: High resolution 0-100%volume methane
• All metal construction with isolated housing
• Small internal volume
• Flexible electronic configuration access
• User calibration also enabled by hardware connections
• Wide operating temperature range
• Fast response
• Immunity from 'poisoning'

Prime1 Infrared Methane Sensor CH4 Sensor Specification
Unless otherwise stated all data was taken using: Supply voltage of 3.5V. Ambient temperature (between 20°C and 25°C). Ambient pressure (between 995 hPa and 1020 hPa). Gases diluted in nitrogen. Gas Flowrate 1litre/min across sensor face.

Supply voltage range: 3.0V - 5.0V
Power consumption: 280mW typical
Default output range:
  Pellistor mode: 
  Voltage mode: 

0 - 100mV from mid supply relative to detector pin
0.4V - 2.0V 
Warm up time:
  To operation
  To specification

< 60s
< 3 minutes 
Nominal ranges: 
0 - 100% LEL methane, 0 - 100% LEL hydrocarbons or
0 - 100% Volume methane 
Response time (T90) < 30s to a step change in gas concentration
Minimum resolution:
  At zero 

  At range

0.01% of range (digital), 0.04% of range (0.4 - 2.0V analogue voltage) or
0.1% of range (analogue pellistor mimic)
0.1% of range
Zero repeatability: ± 0.1% of range
< ± 3% of range up to 50% of range
< ± 5% of range above 50% of range
MTBF  > 5 years
Digital interface format: 8 data bits, 1 stop bit, no parity
Digital Interface Baud Rate 38400 (default), 19200, 9600
Digital Interface Logic Levels: 

VINL Input low voltage: <0.8V
VINH Input high voltage: >2.0V
VOL Output low voltage: <0.4V
VOH Output high voltage: >2.4V
Weight: 18.0 grams
Vibration: Complies with EN61779-1
Relative humidity: 0 - 95% RH non-condensing
Operating temperature range: -30°C to +60°C
Storage temperature range: -40°C to +80°C 
Operating pressure range:0 700 - 1300 hPa


Prime IR Sensor Type Sensing Ranges
Prime1 0-100% Lel Methane, 0-100% Lel Hydrocarbons, 0-100% Volume Methane
Prime2 0-2000ppm Carbon Dioxide to 0-10% Volume Carbon Dioxide
Prime3 10-100% Volume Carbon Dioxide
Prime4 0-100% Lel Acetylene
PrimePELL True Pellistor replacement, 0-100% Lel, 3 Pins

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