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Handheld Nitric Oxide (NO) Gas Detector, 0 to 20/50/100 ppm

Handheld nitric oxide gas detector is available with an optional measuring range from 0 to 20/50/100/250 ppm. Compact NO detector is portable and convenient to transport and gives sound, light and vibration alarms for NO gas leaks.
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Delivery date: 7-12 days

Handheld nitric oxide (NO) gas leak detector draws the gas from a built-in micro pump and comes in the measuring range of 0 to 20/50/100/250 ppm for selection, fast response, precision measurement.

Handheld NH3 gas detector

Gas detectors can detect nitric oxide (NO) quickly

  • sisco portable nitric oxide (NO) gas detector has an LCD dot matrix display to directly read out the gas type, unit, concentration, local time, etc.
  • English/Chinese operations are supported.
  • Gas concentration unit PPM and mg/m3 can be shifted quickly.
  • Built-in micro-sampling pump, 10 grades of suction are available.
    Explosion-proof certification.
Portable ammonia gas detector

USB interface to transfer data at high speed

  • The handheld nitric oxide detector can download and print the stored data (optional).
  • There is no need for personnel to manually record data in real-time, and the data is automatically stored in the instrument.
  • Historical data can be viewed on the instrument or downloaded to a computer.
  • USB interface, fast and convenient charging.


Portable NH3 gas detector detailsPortable NH3 gas detector details


sisco portable NO detector is used to detect the nitric oxide gas leak, suitable for petroleum, chemical, coal, metallurgy, pharmaceutical and other places involving hazardous gases such as nitric oxide.

Handheld NO detector applications

Sampling Method Pumping suction, the flow rate can be up to 1L/min, ten grades of pumping suction for selection.
Detection Principle Electrochemistry
Gas Nitric Oxide (NO)
Range (Optional) * 0 to 20 ppm, 0 to 50 ppm, 0 to 100 ppm, 0 to 250 ppm
Resolution 0.01ppm or 0.1ppm
Accuracy ≤±3% F.S.
Response Time ≤10s
Repeatability ≤±1%
Recovery Time ≤10s
Linearity Error ≤±1%
Zero Shift ≤±1% (F.S./year)
Data Logging (Optional Function) High speed data transmission by USB, available for data downloading and printing (The built-in IC card has about 2G memory, which can record 100,000 sets of data.)
Alarms Sound, light and vibration
Display LCD dot matrix display
Language Chinese/English
Battery 3.7V rechargeable lithium battery, 3.7 Watt (Charger included: Input AC 100-240V 50/60Hz with optional USA, Europe or UK plug)
Operating Time 100h (Pump off)
Communication Mini USB interface supports standard MODBUS communication protocol
Explosion-proof Grade Ex ia IIC T4
Case Material ABS+PC
Protection Grade IP66
Certification CE, ATEX
Operating Temperature -20℃~50℃
Operating Humidity 0~95%RH (non-condensing)
Operating Pressure 0.8~1.2bar
Dimension 205*75*32mm
Weight 300g


* If you need an NO gas detector with other measuring ranges unlisted in the above table, please inform us of your operating environment to help you choose an appropriate one for your application.

* Other portable gas detectors are also provided, you can refer to SISCO Gas Detector Catalog to get the specific gas type and measurement range. If you have any questions, please feel free to contact us.

Packing List:

  • 1 × NO Gas Detector
  • 1 × Carrying Case
  • 1 × AC Adapter
  • 1 × User Manual

Q1: What is a gas detector?
A gas detector is an instrument for gas leakage concentration detection, including a portable gas detector, handheld gas detector, fixed gas detector, online gas detector, etc.

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: What is ppm of gas detector?
A3: Parts per million or "ppm" is often used as a fractional measure of concentration. For example, a methane (molecular) concentration of 2% means that 2 out of every 100 air molecules are methane. Likewise, a methane concentration of 2 ppm means that 2 out of every 1 million air molecules are methane.

Tips: Fixed vs. Portable Nitric Oxide (NO) Detector

The fixed nitric oxide detector is mainly used to detect the concentration of nitric oxide in the air. It is fixed in one position and used 24 hours a day, with real-time monitoring and real-time transmission, which can effectively avoid the harm caused by high nitric oxide concentration to the human body.

Handheld nitric oxide detectors are mainly used in confined space operations. When operators enter a nitric oxide site, they must carry a portable nitric oxide detector to avoid nitric oxide poisoning accidents.


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.
Existing reviews
Clintt | 3/6/2023 12:09 AM
Works perfectly
Sensitive portable gas detector. The audible and visual alarms on this portable detector are very nice. When nitric oxide leaks, it alerts me and helps me act quickly. So it's necessary for me.
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