Product Information
The NTM SenseH2® Hydrogen sensor is a robust sensor designed for hydrogen monitoring. The NTM SenseH2® can be used in a variety of applications and has key features that sets it apart from other commercial sensors and makes it well suited for your application:
Accurate: Highly sensitive to hydrogen, yet insensitive to carbon monoxide, methane and other flammable gases, making the sensor well suited for a wide range of environments.
Stable: The sensor will not be affected by humidity, temperature and flow rate variation.
Rapid: Response and rapid recovery times allowing measurement of transient leaks, and lead detection without false positives.
Durable: Waterproof automotive grade connector providing a robust sensor with a common interface. No calibration is needed to insure action for specific LFL limit.
| Metric | NTM SenseH2® | Competition | Comments |
| Response Time, t90 | 5 sec. | Our analysis indicate that some sensors take as long as 3 hours | Quick recovery is especially desirable if there is a potential hydrogen exposure during refueling |
| Recovery Time, t90 | 5 sec. | EZT3HYE: 70 sec HY-ALERTA: 60 sec |
Particularly important during functionality tests |
| Minimum Operating Temperature | -20°C | TGS 6812: -10°C | Our sensor is well suited for operating in a wide range of temperature and humidity and well suited for handling various environments |
| Maximum Operating Temperature | 80°C | EZT3HYE: 50°C HY-ALERTA: 40°C |
|
| Relative Humidity Range | 5-95% | HLS-440 is not accurate at high temp. and humidity; Some others must be adjusted for humidity | |
| Cross sensitivity to other combustible gas | None | Most "hydrogen sensors" are combustible gas sensors and will react to methane, carbon monoxide and fuel vapors | Combustible gas sensors can cause false alarms in the presence of carbon monoxide and other hydrocarbons generated from sources such as internal combustion engines |
| Silicone tolerance | Yes | Most sensors are poisoned by silicone | Many hoses and gaskets within products often off-gas silicone which can damage most sensors |
| UL classification | UL/ATEX classification to 60079-0/-15 standard for normal and hazardous locations | Most sensors do not have UL classifications | Facilitates gaining overall approval of OEM products for markets that require a UL/ATEX /CE Certification. |
| Electromagnetic compatibility compliance | EMC Compliance to EN12895:2000 (Industrial truck) & EN61326-1:2006 | Most sensors do not have EMC compliance | The sensor will not cause electrical interference with other devices or equipment |
| Flow sensitivity | Calibration valid from 0.02-5.00 m/s |
Most sensors show significant sensitivity to flow. | Accurate and reliable hydrogen sensing capability at all Flow rates. |
The NTM Alarm System is a complete hydrogen monitoring solution. The alarm system is provided with the innovative NTM SenseH2® hydrogen sensor and all system components required for a safe, reliable, and simple installation. The NTM Alarm System detects and alarms with LED lights, an audible alarm and two internal relays to hydrogen concentration levels within the Lower Flammable Limit (LFL).
Included with the NTM Alarm System are:
• A Composite Control Box with connectors for input of one or two NTM SenseH2® hydrogen sensors, connector for power supply 100V to 240V, three LED indicator lights, dedicated alarm system circuit board, internal audible alarm, two internal sealed mechanical relays and built in diagnostics for LEDs, audible alarm and relays.
• One NTM Sense H2® hydrogen sensor
• External power supply for 100V to 240V (50-60 Hz), your choice at time of purchase
• 25 ft. shielded communication cable with connectors for control box and sensor
NTM SenseH2® Product Datasheet (pdf)
NTM Alarm System Datasheet (pdf)
NTM SenseH2® Technical Specification (pdf)
Flow Sensitivity White Paper (pdf)
