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Hydrogen gas alarm (NDR-H2-1A) Hydrogen alarm (NDR-H2-1A)
- Sensor application products
- Alarm
- Applied products
- hydrogen
- Applied products
- explosion prevention
Product Description The hydrogen alarm (NDR-H2-1A) is a device that detects leaked hydrogen gas with high accuracy and alerts the surrounding area to danger. With a threshold of 500 ppm, it immediately issues an alarm with a buzzer and LED lamp when gas is detected. The power supply is AC100V, and an A-contact relay is provided for the external output. The contact is normally conductive and disconnected when an alarm occurs. It can be used in a variety of ways, from simple installation to device linkage. *Gas alarms are devices that require regular inspection and calibration to maintain accurate detection performance. Please consult us in advance if you are considering installing it in a high place or a place that is difficult to access. We can also propose an installation method that takes into account the maintenance plan. Examples of use ●Around gas chromatography equipment ●Near hydrogen cutting equipment ●Hydrogen cylinder installation location Features ●Uses a proven in-house contact combustion gas sensor: Achieves high reliability and accuracy. ●LED displays hydrogen gas concentration in three stages: Power, trouble, and alarm status can be confirmed at a glance. ●General household AC3V outlet specification: Easy to install and operate. ●Loud buzzer (approx. 100 dB): Ensures attention in an emergency. ●Wall-mounted installation: Can be installed in limited spaces.
- Measurement range
- 500 to 20,000ppm (range error 15%)
- Detection target gas
- hydrogen
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 (NDR-H2-2C) Product description The compact hydrogen alarm detects leaked hydrogen gas and alerts the surrounding area of the risk of gas leakage. While it has the same performance as the standard model (NDR-H2-1A), its compact design allows it to be used in environments with limited installation space. It issues an alarm with a buzzer and LED lamp at a threshold of 500 ppm. The power supply is AC100-240V, and the external output is equipped with a c-contact relay. It can be used in a variety of ways, such as equipment linkage and simple installation. *C-contact type specification. Examples of use ●Around gas chromatography equipment ●Near hydrogen cutting equipment ●Near hydrogen cylinders (places with limited installation space) Features ●Uses our own proven contact combustion gas sensor: Boasts high reliability and accuracy. ●LED displays hydrogen concentration level in three stages: You can check the power supply, trouble, and gas alarm status at a glance. ●Compact body: The compact design allows you to install it in any space. ●Can be used with a general household AC100V outlet: Easy to install and use. ●Loud alarm sound (93dB): Ensures attention in an emergency. ●Can be wall-mounted: Allows for effective use of space. Please feel free to request a quote. If you have any questions regarding the installation environment or maintenance, please feel free to contact us.
- Measurement range
- 500 to 20,000 ppm
- Detection target gas
- hydrogen
Hydrogen alarm (NDR-H2-1B) Hydrogen gas alarm (NDR-H2-1B)
- Sensor application products
- Applied products
- hydrogen
- Applied products
- explosion prevention
Product DescriptionThe hydrogen alarm (NDR-H2-1B) is a device that detects leaked hydrogen gas with high accuracy and alerts the surrounding area with an alarm. The detection concentration threshold is 500 ppm, and when gas is detected, an alarm is immediately sounded by a buzzer (approximately 93 dB) and an LED lamp. The power supply is AC100V. The external output uses a B contact relay (AC250V 1A, resistive load), which is normally open, but when an alarm occurs, the contact closes, allowing for reliable signal transmission to external devices. In this model, the circuit is normally open and closes when an alarm occurs, so it can be easily linked to external buzzers, patrol lights, equipment stop devices, etc. This makes it easy to build a system that reliably and immediately notifies the alarm in the event of an abnormality or safely stops the equipment. *When connecting to an external device, be careful not to exceed the relay contact rating (AC250V 1A, resistive load). It is recommended to use a relay when connecting a high-current device. *Gas alarms are devices that require regular inspection and calibration to maintain accurate detection performance. Please consult us in advance, especially if you are considering installing it in a high place or a place where access is difficult. We can also propose an installation method that takes into account the maintenance plan. *A contact specification model (NDR-H2-1A) is also available separately. Examples of usage ●Around gas chromatography equipment ●Near hydrogen cutting equipment ●Hydrogen cylinder installation location ●When you want to link with a buzzer, patrol light, or stop device Features ●Equipped with a proven in-house contact combustion gas sensor: High reliability and stable detection performance. ●LED 3-stage display: Power, trouble, and alarm status can be confirmed at a glance. ●AC100V power supply specification: Easy installation and operation. ●Loud buzzer (approx. 93dB): Ideal for calling attention in an emergency. ●Wall-mounted installation: Effective use of space. ●Equipped with B contact relay: Signal transmission to external devices is possible when an alarm occurs. Please be careful of the load capacity. We are always available to provide estimates and consultations regarding introduction considerations. Also, please feel free to contact us if you have any questions regarding the installation environment or operation.
- Measurement range
- 500 to 20,000 ppm
- Detection target gas
- hydrogen
NDS-9A-NH3 Fixed ammonia alarm (NDS-9A-NH3)
- Sensor application products
- Electrochemical formula
- Applied products
- ammonia
- Applied products
- explosion prevention
[Notice] Sales of this product have been temporarily suspended. We are currently verifying the stability of product performance, and the re-release date is undetermined. We will announce the availability of a replacement product on this page or in the news section as soon as it is ready. We apologize for any inconvenience this may cause and appreciate your understanding. Product Description: The fixed ammonia alarm (NDS-9A-NH3) detects and displays ammonia (NH₃) concentrations in the air in real time, and reliably sounds an alarm via a buzzer and LED when a dangerous concentration is reached. The measurement range is 0 to 100 ppm, with alarm settings of 20 ppm and 50 ppm, helping to ensure workplace safety. Alarm history and concentration fluctuations are automatically recorded as logs and can be saved in CSV format using a USB memory stick. Furthermore, the relay contact output allows for connection to external devices, making it suitable for integration into factory and facility safety systems. 🔷 Applications: Refrigerant ammonia leak monitoring; Ammonia concentration management in chemical factories and fertilizer manufacturing plants; Safety management of ammonia emissions in livestock facilities (livestock barns, poultry houses, etc.); Ammonia gas monitoring in sewage and wastewater treatment plants
- Measurement range
- 0-100ppm
- Detection target gas
- ammonia
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