Combustible Gas Detector

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The HM-701 series high-stability combustible gas detector is particularly for detecting the combustible gas leakage. By utilizing the high-end semiconductor gas sensing element, it works stably and can serve for a long time. The installation is also easy. The product is outfitted with the MCU internally for central control process. And each functional module directly or indirectly connects with the I/O port of MCU. The program solidified in the internal of MCU can complete the normal work of each functional module. Thus, the product can be guaranteed to work more stably, reliably and safely.

Meanwhile, the combustible gas detector adopts SMT production technology, enabling strong stability. Its outer shell is fabricated from the ABS fireproof material, and the PCB board utilizes the glass fiber material. The automatic fault detection indication function is also available. The product can drive the manipulator. Designed with stylish appearance, it is suitable for various household environments. The product can also be applicable for villa, hotel, apartment, and other places for security monitoring.

Model and Function

Model	Operating Voltage	Alarm Indication	Basic Function
HM-701NS-AC	AC200-240V or AC110V	85dB Alarm Sound, Red LED Indicator Flashing	No Relay Output Signal
HM-701NVS-AC	AC200-240V or AC110V	Sound and Flash Alarm	No Relay Output, Outputting A 12V Pulse Voltage for Driving the Electromagnetic Valve to Close the Gas Source When Raising the Alarm
HM-701NC-AC	AC200-240V or AC110V	85dB Alarm Sound, LED Indicator Flashing	Relay Operating with a Normally Open or Normally Closed Signal for Connecting Alarm Host
HM-701NVC-AC	AC200-240V or AC110V	Sound and Flash Alarm	Outputting A Relay Output Signal for Connecting Alarm Controller, and Outputting A DC12V Pulse Voltage for Driving Electromagnetic Valve to Cut off the Gas Source
HM-701NC-DC	DC9-24V	Sound and Flash Alarm	Outputting A Relay Output Signal for Connecting Alarm Controller When Raising the Alarm
HM-701NVC-DC	DC9-24V	Alarm Sound, LED Indicator Flashing	Outputting A Relay Signal and A DC12V Pulse Voltage for Controlling the Electromagnetic Valve to Cut off the Gas Source
HM-701LC-DC	DC9-24V		The product exploits the low power consumption sensor and works with low power. It is often employed in the place insufficient with power supply. After the alarm, the product outputs a replay signal to connect the alarm controller.

Technical Specification (Part 1)

Model	HM-701NS-AC	HM-701NVS-AC	HM-701NC-AC	HM-701NVC-AC
Type	Independent Type	Independent Type with 12V Pulse Output to Drive Electromagnetic Valve	Network Type	Network Type with 12V Pulse Output to Drive Electromagnetic Valve
Operating Voltage	AC110V or 220V
Rated Power	≤3W
Sensor	High-stability Semiconductor Sensor
Alarm Concentration	10% (± 5%) Lower Explosive Limit of Natural Gas
Alarm Sound Pressure	85dB/m
Indicator	Power Source: Green LED Indicator Normally onAlarm: Red LED Indicator Flashing and Buzzer Emitting the SoundFault: Yellow LED Indicator Normally on and Buzzer Emitting the Sound
Alarm Output	Not Available	12V Pulse Output	Normally Closed or Normally Open Relay Output	Normally Closed or Normally Open Relay Output and 12V Pulse Output
Auxiliary Output	Manipulator Controlling Signal
Manipulator Signal	DC12V 300ms
Warm-up Time	About 180 Seconds
Working Environment	Temperature Range: -10℃ ~ 55℃Humidity Range: 10%~95% RH (No Condensation Phenomenon)
Mounting Mode	Wall Mounted Mode
Dimension	115×72×41mm

Technical Specification (Part 2)

Model	HM-701NC-DC	HM-701NVC-DC	HM-701LC-DC
Type	Network Type	Network Type with 12V Pulse Output to Drive Electromagnetic Valve	Network Type, Low Power Consumption Design
Rated Power	≤3W
Operating Voltage	DC9-24V
Sensor	High-stability Semiconductor Sensor
Alarm Concentration	10% (± 5%) Lower Explosive Limit of Natural Gas
Alarm Sound Pressure	85dB/m
Indicator	Power Source: Green LED Indicator Normally onAlarm: Red LED Indicator Flashing and Buzzer Emitting the SoundFault: Yellow LED Indicator Normally on and Buzzer Emitting the Sound
Alarm Output	Normally Closed or Normally Open Relay Output	Normally Closed or Normally Open Relay Output and 12V Pulse Output	Normally Closed or Normally Open Relay Output
Auxiliary Output	Manipulator Controlling Signal
Manipulator Signal	DC12V 300ms
Warm-up Time	About 180 Seconds
Working Environment	Temperature Range: -10℃ ~ 55℃Humidity Range: 10%~95% RH (No Condensation Phenomenon)
Mounting Mode	Wall Mounted Mode
Dimension	115×72×41mm

Instruction
1. For guaranteeing the sensitivity of the combustible gas detector, the user should clean the surface of the product with banister brush every one month. Before cleaning, the power should be cut off first.
2. It's not proper to spray the air freshener, hairspray, paint or other aerosol around the product.
3. The semiconductor sensor of the product can serve for 5 years. After serving for over 5 years, it should be replaced.
4. Do not clean the product with detergent remover or the solvent.
5. The chemical can cause permanent damage or temporary pollution to the product.
6. During the use process, if the combustible gas detector has the problem, please contact with the supplier timely. Do not dismantle and repair the product without permission for avoiding the accident.

Packaging

Packaging Mode	Heiman Packing, Customers' Packing, Neutral Packing, White-box Packing
Quantity	90pcs/box
Net/Gross Weight	23/25kg
Carton Size	560×468×355mm

Note: The packing mode is selectable to meet the needs of customers.

Related Names
Liquefied Petroleum Gas Detector | Gas Detection Instrument | Electronic Gas Leak Detector

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