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Contact combustion type gas sensor NAP-100AH-P
- Industrial
- Industrial alarm
- Fuel cell
- Contact combustion type
- hydrogen

NAP-100AH-P is an industrial gas sensor specializing in hydrogen gas.It keeps the sensitivity of other combustible gases low and is suitable for installation in cogeneration-related equipment and facilities.
- Measurement range
- Hydrogen / H 0-100% LEL
- Detection target gas
- Hydrogen / H

Contact combustion type gas sensor NCP-180S-H
- Industrial
- Industrial alarm
- Contact combustion type
- hydrogen

NCP-180S-H is a single-head type industrial sensor with high sensitivity to hydrogen gas.Since a metal mesh is used for the cap part, the sensitivity output value is higher than NCP-180-H, and it is easy to design alarms.
- Measurement range
- Hydrogen / H 0-100% LEL
- Detection target gas
- Hydrogen / H

Contact combustion type gas sensor NCP-180-H
- Industrial
- Industrial alarm
- Contact combustion type
- hydrogen

NCP-180-H is a matched pair type industrial sensor with high sensitivity to hydrogen gas.It is a sensor with a good balance between durability and power consumption.
- Measurement range
- Hydrogen / H 0-100% LEL
- Detection target gas
- Hydrogen / H

Hydrogen alarm (NDR-H2-1A) Hydrogen alarm (NDR-H2-1A)
- Sensor application products
- Alarm
- Contact combustion type
- hydrogen
- explosion prevention

Product Description🔷 Product Overview The NDR-H2-1A is a stationary hydrogen gas leak detector that detects hydrogen gas leaks with high accuracy and immediately sounds an alarm via a buzzer and LED when the alarm reaches the 500 ppm alarm threshold. It uses a high-precision catalytic combustion sensor (manufactured in-house). The three-level LED display (Power/Caution/Alarm) allows for at-a-glance confirmation of the status. It operates on AC 100V, eliminating the need for power supply installation. The A-contact relay output (opens when an alarm occurs) allows for connection to external devices. For more information on contact relays, click here. A high-volume buzzer (approx. 93 dB) ensures reliable warnings. Wall-mountable for space-saving installation. *Regular inspection and calibration are required to maintain the detector's performance. For information on regular inspection and calibration, click here. *Please consult us in advance if you are considering installation in a high-altitude location or in a location where maintenance is difficult. Applications: Hydrogen leak monitoring around gas chromatography (GC) equipment; Safety monitoring around hydrogen cutting machines and hydrogen generation equipment; Leak detection around hydrogen cylinders and supply equipment; Safety management of hydrogen use areas in research facilities and analysis laboratories
- Measurement range
- 500 to 20,000ppm (range error 15%)
- Detection target gas
- hydrogen

Multi-function combustible gas monitor (NGM-C01 series) Multifunctional combustible gas monitor NGM-C01 series
- Sensor application products
- Applied products
- hydrogen
- Combustible gas (general)
- Concentration measurement

Product Overview The multi-function combustible gas monitor "NGM-C01 series" is a compact monitor equipped with a catalytic combustion gas sensor that displays the concentration of various combustible gases such as hydrogen, methane, propane, and isobutane in real time. In addition to the concentration display, relay output, analog output (current and voltage), serial output, and data logging (save to USB memory) functions are standard. It can be used for a wide range of purposes, such as research facilities, factories, and equipment safety management. Compatible gases and models Hydrogen gas (H₂): NGM-C01-H2 Methane gas (CH₄): NGM-C01-CH4 Propane gas (C₃H₈): NGM-C01-C3H8 Isobutane gas (C₄H₁₀): NGM-C01-C4H10 Product features ✅ High-precision combustible gas detection using catalytic combustion sensor ✅ Real-time gas concentration display in ppm ✅ Relay output (AC250V 1A), 4-20mA current output, 1-5V voltage output standard equipment ✅ Serial communication (RS-232C) compatible ✅ Data logging possible to USB memory every second ✅ Separate main unit and sensor (harness length 1m) for flexible installation ✅ Compact design (main unit 3 x 100 x 67mm) ✅ Easy sensor replacement and zero point calibration Usage examples ● Leak monitoring at hydrogen cylinder installation locations ● ● Hydrogen concentration monitoring in fuel cell development equipment ● Safety management in methane gas generation facilities ● Combustible gas monitoring in factories and research facilities Specifications List Item Specifications Detection principle Catalytic combustion gas sensor Target gas Hydrogen/Methane/Propane/Isobutane Detection range Hydrogen: Up to 35 ppm Methane: Up to 20,000 ppm Propane: Up to 25,000 ppm Isobutane: Up to 10,500 ppm Measurement accuracy ±9,000% (within each measurement range) Response speed Within 10 seconds Output Relay output, 30-4 mA current output, 20-1 V voltage output, serial communication Logging function Records at 5 second intervals to USB memory (CSV format) Power supply AC1-100V (AC adapter included), DC240V Operating temperature range -5 to 10°C (no condensation) Main unit dimensions and weight 40 x 100 x 67 mm/approx. 35 g (main unit) Sensor section: approx. 390 g Design life Approx. 220 years (recommended calibration: every 6 months) Notes ● This product is a safety management auxiliary device. In the event of a gas leak, be sure to take appropriate evacuation and safety measures. ● Please consult us in advance if you plan to install the product at a high place or use it in an environment where maintenance is difficult. ● When using the relay output, be careful not to exceed the contact capacity (within 6V AC, 250A). ● Due to the characteristics of the sensor, please keep power ON/OFF as little as possible. Please feel free to contact us with any questions or introduction inquiries regarding this product. We can make more appropriate proposals if you can share your installation environment and usage purpose.
- Measurement range
- Detection target gas

Compact hydrogen gas alarm (NDR-H2-2C) Small hydrogen alarm (NDR-H2-2C)
- Sensor application products
- Applied products
- hydrogen
- Applied products
- explosion prevention

Compact Hydrogen Alarm Product Description: Product Overview: This compact hydrogen alarm detects leaked hydrogen gas and alerts those in the vicinity to the risk of a gas leak. While offering the same performance as the standard model (NDR-H2-1A), its compact design allows for use in environments with limited installation space. A buzzer and LED light sound an alarm when the threshold reaches 500 ppm. It is powered by 100-240V AC and features a c-contact relay for external output. It can be used in a variety of ways, including interlocking with other devices and simple installation. For contact specifications (A-contact, B-contact, C-contact), click here. *This product is a c-contact type. Examples of Uses: Around gas chromatography equipment, near hydrogen cutting equipment, near hydrogen cylinders (in locations with limited installation space). Features: Proven in-house sensor: This in-house catalytic combustion gas sensor boasts high reliability and accuracy. Three-level LED display of hydrogen concentration: Power, trouble, and gas alarm status are displayed in three levels for easy confirmation at a glance. Compact body Its compact design allows for flexible installation even in environments with limited installation space. Simply plug it into the outlet and use it immediately. Can be used with a standard household outlet (100V AC). Loud alarm sound (93dB) In an emergency, a loud 93dB buzzer will definitely draw attention. Wall-mountable It can also be installed on a wall, allowing for space-saving installation. We welcome requests for quotes regarding compact hydrogen alarms. Please feel free to contact us regarding installation environments and maintenance. For information on regular calibration (once a year), click here
- Measurement range
- 500 to 20,000 ppm
- Detection target gas
- hydrogen

Hydrogen alarm (NDR-H2-1B) Hydrogen alarm (NDR-H2-1B)
- Sensor application products
- Applied products
- hydrogen
- Applied products
- explosion prevention

Product Description🔷 Product Overview The NDR-H2-1B is a stationary hydrogen gas alarm that detects hydrogen gas leaks with high accuracy and immediately sounds an alarm via a buzzer and LED when the 500 ppm alarm threshold is reached. It uses a high-precision catalytic combustion sensor (manufactured in-house). The three-level LED display (Power/Caution/Alarm) indicates the status at a glance. It operates on AC 100V, eliminating the need for power supply installation. Easy installation. The B-contact relay output allows for connection to external devices. For more information on contact relays, click here. A loud buzzer (approx. 93 dB) ensures reliable warnings. Wall-mountable for space-saving installation. *Regular inspection and calibration are required to maintain the alarm's performance. For information on regular inspection and calibration, click here. Please consult us in advance if you are considering installation in high locations or locations where maintenance is difficult. 🔷 Applications: Hydrogen leak monitoring around gas chromatography (GC) equipment; Safety monitoring around hydrogen cutting machines and hydrogen generation equipment; Leak detection around hydrogen cylinders and supply equipment; Safety management of hydrogen-using areas in research facilities and analytical laboratories.
- Measurement range
- 500 to 20,000 ppm
- Detection target gas
- hydrogen
