Model: HNAG1000-C2H4O
Detection: C2H4O (Ethylene Oxide)
Detection Principle: Electrochemistry
Detection range: 0-100PPM
The online combustible and toxic gas concentration detector HNAG1000-C2H4O-Z is engineered for real-time and accurate detection of C2H4O gas concentration and leakage in various demanding environments. Utilizing highly advanced electrochemistry testing principles and microcontroller technology, it delivers fast response speeds (T90<10S), high measurement accuracy (±2%F.S), and exceptional stability.

Safety is paramount in chemical plants, petroleum facilities, and pharmaceutical production workshops. This C2H4O sensor features an explosion-proof wiring method (Ex d IIC T6) suitable for various dangerous places. Protected by a sturdy aluminum alloy housing with an IP66 protection grade, it effectively guards against splashing water and short periods of rain.


This fixed gas monitor is highly compatible with various control alarms, PLCs, DCS, and other control systems. It can simultaneously realize on-site alarms and early warnings via standard 4-20mA signal output, RS485 (MODBUS RTU protocol), and Relay switching output. For modern network needs, it supports diverse wireless signal transmissions including GPRS, 4G, WIFI, LORA, and ZigBee.

The standard infrared remote control enables safe operation without the need to open the cover in dangerous, explosion-prone situations. The 2.5-inch high-definition color screen displays real-time concentration, temperature, and humidity. It also automatically tracks the zero point to prevent drift and includes temperature compensation.



The detector supports multiple installation methods including wall-mounted, pipe, ceiling, and bracket installation. It should be strategically installed based on the specific gravity and wind direction of the gas to ensure rapid response.

Q1: What is the transmission distance for the wired output signals?
A1:The standard 12-bit precision 4-20mA output chip and the RS485 signal (using standard MODBUS RTU protocol) both support a transmission distance of up to 1Km.
Q2: What is the recommended installation height for this detector?
A2:The detector should be installed at a height greater than 30 cm from the ground to prevent water from splashing in. For detecting harmful gases with a specific gravity less than air, install the probe above the equipment; if the specific gravity is greater than air, install it close to the ground, with the probe facing downwards.
Q3: Can the device operate in extreme temperatures and humidity?
A3:Yes, the detector operates efficiently in temperatures ranging from -20 to 50℃ and humidity levels of 0-95%RH. Optional high temperature and high humidity pretreatment systems are available for extreme conditions.
Q4: Can the detector work normally in harsh environments such as high temperature, high humidity, or high dust?
A4: Yes. Although the standard working humidity is 0-95%RH and the working temperature is -20 ~ 50℃, the device offers various optional accessories for extreme environments. These include normal temperature and high humidity pretreatment systems, high temperature and normal humidity pretreatment systems, high temperature and high humidity pretreatment systems, and high temperature, high humidity and high dust pretreatment systems to ensure accurate detection under complex conditions.
Q5: Are there any special requirements for installing this fixed gas detector outdoors?
A5: If it is installed outdoors, a rain shield must be installed above the detector. In addition, protection measures such as dustproof, waterproof, and high temperature protection should also be carefully considered during installation.
Q6: What is the effective detection coverage area of a single probe?
A6: The detection range of each probe in an open area is 60 square meters. However, when actually setting up the device, factors such as gas expansion, dispersion, wind direction, temperature, humidity, and area closure must also be considered.
Q7: Can the alarm modes be customized?
A7: Yes. A two-level alarm is standard, and a three-level alarm is available as optional. The alarm mode can be customized by the user, including regular high and low alarms, as well as interval control alarms.
Q8: What are the specific requirements for connecting cables during wired data transmission?
A8: For the 4~20mA signal, you should choose a three-core shielded cable, and for RS485, choose a four-core cable. When the transmission distance exceeds 1000 meters (with a detector), the single wire diameter must be ≥ 1.5mm, and the shielding layer must be connected to the earth.

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The HNAG800-HBR/HCL Preprocessing Online Monitoring System provides real-time Hydrogen Bromide and Hydrogen Chloride detection. Featuring a precise electrochemical sensor in a stainless steel enclosure, it ensures rapid response and industrial safety.

The HNAG800-HCN Preprocessing Online Monitoring System delivers real-time Hydrogen Cyanide detection. Featuring a highly sensitive electrochemical sensor, it ensures rapid response, high accuracy, and explosion-proof safety within a rugged stainless steel enclosure.

The HNAG800-NO Preprocessing Online Monitoring System delivers real-time Nitric Oxide detection. Featuring an advanced electrochemical sensor for atmospheric monitoring, it ensures rapid response and high precision in a rugged stainless steel enclosure.

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The HNAG800-SO2 Preprocessing Online Monitoring System delivers real-time Sulfur Dioxide detection. Featuring an advanced electrochemical sensor for flue gas, it ensures rapid response and high precision in a rugged stainless steel enclosure.

The HNAG1000-NO2 Preprocessing Online Monitoring System provides real-time Nitrogen Dioxide detection. Engineered with an electrochemical sensor for flue gas applications and housed in robust stainless steel, it guarantees rapid response and industrial safety.

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The HNAG920-3H portable 3-in-1 gas detector monitors CH4, C3H8, and H2. Featuring integrated pump-suction and diffusion modes, a 180° auto-rotating screen, and wireless transmission, it provides superior safety in complex environments.

The HNAG1000-O3 fixed gas detector provides real-time, highly accurate ozone (O3) monitoring. Featuring an advanced electrochemical sensor, Ex d IIC T6 rating, and 4-20mA/RS485 outputs, it ensures maximum safety in demanding industrial environments.

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