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Specifications
Mfr. Part #:
NGM-1
Key Attributes
Model Number:
NGM-1
Product Description
Product Overview
The Natural Gas Module is a battery-operated detection device designed for the detection of natural gas (methane) in concentrations below 100% LEL (4.4% CH4 in air). It is not suitable for measuring propane and butane. The module features a MEMS pellistor sensor for low-power operation on standard AA batteries, providing visual (LED) and audible (buzzer) alarms. It also offers data transmission via serial RS232 for monitoring and calibration. Estimated maintenance-free operation is 6 months on 2xAA (2600mAh) batteries.
Product Attributes
- Detectable Gases: Methane
- Sensor Type: MP-7227 MEMS pellistor sensor
- Power Source: Battery operated (2xAA) or 5V DC via USB
- Communication: RS232 (serial), USB (RS232, CDC Class)
- Alarms: Visual (LED), Audible (buzzer)
- Features: Test button
- Special Conditions: Not suitable for high concentrations of silicon, sulfide, and chlorine compounds.
Technical Specifications
| Parameter | Specification |
|---|---|
| Detectable Gases | Methane |
| Maximum Concentration | 5% v/v |
| Sensor Sensitivity | >10 mV/% CH4 |
| Sensor Response Time | <30 s |
| Zero Drift | <0.1%v/v /month |
| Sensitivity Drift | <0.1%v/v /month |
| Power Supply | 5V DC (USB port) 3V DC (battery) |
| Suggested Batteries | 2x1.5V AA in series (min. 2600mAh) |
| Operating Current (Average) | <0.6mA (battery operated) |
| Transmission | USB (RS232, CDC Class) |
| Weight | 11 g |
| Dimensions [w x l x h] | 30 x 65 x 9 mm |
| RS232 Baud Rate | 115200bps |
| RS232 Parity | 8N1 |
| Communication Frame Structure | ADC Code: aaaa, C: b.bb%, Uo: cccmV, T: ddC, S:s\n\r |
| Status (S) | 0: < I alarm level (normal operation) 1: > I alarm level 2: > II alarm level |
| Typical Power Consumption | <0.6mA average, 50mA peak (at 3V) |
| Module Operation Intervals | 1 second measurement, 20 second intervals |
| Data Transmission Interval | Approx. 21 seconds |
| Warranted Performance Period (without calibration) | 3 months |
2411261432_Amphenol-NGM-1_C3659403.pdf
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