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Fixed Nitrogen (N2) Gas Detector, 0 to 100% Vol

Fixed nitrogen gas detector with measuring range 0-100% Vol, supports remote control, optional output signal 4-20mA or RS485. N2 gas detector for nitrogen concentration detecting and leak monitor, high accuracy 3% F.S, fast response within 10s, sound and light alarm, 24h online, real-time display, wall mounting.
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Delivery date: 7-12 days

Fixed nitrogen gas detector with working range 0 to 100% Vol, remote control with 4-20mA/ RS485 output signal, supports sound and light alarm. Fixed N2 gas detector is used for nitrogen concentration detecting and leak monitor in 24 hours.

sisco fixed gas detector

Anti-magnetic interference

  • The nitrogen gas detector can resist the strong magnetic interference of 15V/meter.
  • In areas with dense magnetic products or dense electronic products, such as tunnels, mines, confined spaces, etc., the data is guaranteed to be stable and reliable.
sisco fixed gas detector

Using high-precision sensors

  • The fixed online N2 gas detector is equipped with an infrared remote control as standard, which can realize the functions of alarm point setting, zero point calibration, and address modification without opening the cover.
  • Compatible with various control alarms, PLC, DCS and other control systems to realize remote monitoring.
sisco fixed gas detector

Variety of installation methods

  • Wall mounted type, installed on the wall directly, real time monitoring.
  • Piping type, installed on the pipeline, monitoring the gas concentration inside.
  • Flow type, connected with external sampling pump and tube, measure the gas concentration in enclosed space.


Fixed nitrogen N2 online gas detector can detect harmful gas of furniture, flooring, wallpaper, paint and other items, which is widely used in biological pharmaceutical factories, green home, livestock and poultry breeding, greenhouse cultivation, warehousing and logistics, brewing and fermentation, agricultural production, etc.

Fixed online gas detector application

Detection Principle Electrochemistry
Gas Nitrogen (N2)
Range 0-100% Vol
Resolution 0.01% Vol
Accuracy ≤±3% F.S.
Responce Time ≤10s
Repeatability ≤±1%
Recovery Time ≤10s
Linearity Error ≤±1%
Zero Shift ≤±1% (F.S./year)
Signal Output (Optional) 4-20mA, or RS485 (transfer card included);
Relay output: one group of relay output (1NO+1NC, 24V 100mA) for one alarm (default), or two groups of relay output (2NO+2NC, 24V 100mA) for high/low alarm (optional).
Alarms Sound, light
Display High light nixie tube display
Installation Wall-mounted, piping type, flow-type (according to the detected environment)
Connection G1/2 male thread explosion-proof flexible pipe
Operating Time 24h
Explosion-proof Grade Ex d llC T6
Protection Grade IP65
Certification CE, ATEX
Working Voltage 12~36V DC
Case Material Die-casting aluminum housing
Operating Temperature -20℃~50℃
Operating Humidity 0~95%RH (non-condensing)
Dimension 206*179*90mm
Weight ≤1.6kg
Accessories Power adapter: Input 100-240VAC 50/60Hz, Output 24VDC 2A (Optional USA plug & Europe plug)

Note: The output signal 4-20mA and RS485 CANNOT be used at the same time.

Fixed Nitrogen (N2) Gas Detector Dimension (Unit: mm)

Fixed gas detector with alarm dimension


Q1: What is a fixed gas detector?
The fixed gas detector is composed of sensors and transmitters, and is installed at the detection site. The secondary instrument consisting of circuit, power supply and display and alarm device is installed in a safe place, which is convenient for staff to monitor. In industrial installations and production processes, fixed gas detectors are generally used, because fixed gas detectors can be installed at specific detection points to detect specific gas leaks.

Q2: What does a gas detector detect?
A2: Combustible gases: Natural gas (methane), liquefied gas, coal gas (hydrogen), acetylene, pentane, alkynes, acetone, toluene, alcohols, hydrocarbons, light oil, etc.
Toxic gases: Carbon monoxide, hydrogen sulfide, ammonia, chlorine, oxygen, phosphine, sulfur dioxide, hydrogen chloride, chlorine dioxide and other toxic and harmful gases.

Q3: Difference between fixed gas detector and portable gas detector
A3: The biggest advantage of fixed gas detectors is 24-hour uninterrupted measurement. As long as the power is turned on, the fixed gas detector is in normal detection work. Portable gas detectors are usually used in confined spaces and confined spaces, but the gas environment in these spaces is usually very complex, and there will be situations such as lack of oxygen and high concentrations of harmful gases.

Tips: How to calibrate fixed gas detector?

  • The calibration personnel must be trained, understand the principle and performance of the fixed gas detector, be proficient in operating skills, and hold a certificate.
  • Adjusters must strictly abide by the operating procedures.
  • The fixed gas detector must be measured and certified before it can be used.
  • Before calibrating the fixed gas detector, perform a visual inspection. Calibration can be performed after confirming that the appearance is intact.
  • Fixed gas detectors that require calibration should be warmed up for about 20 minutes. Set the fixed gas detector to zero in fresh air.
  • After the zero adjustment is completed, pass a standard gas sample with a concentration of about 1.0% according to the flow specified in the manual. Calibrate the displayed value of the fixed gas detector. The indicated value is consistent with the standard gas value and can be used after stabilization.

Thank you for buying industrial test and measurement equipment on, all products sold by sisco and the partner cover a 12 months warranty, effective from the date of receiving the products.

What is covered?

sisco is responsible for providing free spare parts, and free technical support to assist the customer to repair the defective products until the problem is solved.

What is not covered?

  • Product purchased from anyone other than a sisco store or a sisco authorized reseller.
  • Expendable parts.
  • Routine cleaning or normal cosmetic and mechanical wear.
  • Damage from misuse, abuse or neglect.
  • Damage from use of parts other than sisco approved.
  • Damage from use outside the product’s usage or storage parameters.
  • Damage from use of parts not sold by sisco.
  • Damage from modification or incorporation into other products.
  • Damage from repair or replacement of warranted parts by a service provider other than a sisco authorized service provider.
  • Damage caused by the application environment not meeting the product usage requirements and the failure to perform preventive maintenance.
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