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Henan Otywell Electronic Technology Co., Ltd.

OT137 Multi gas detector

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OT137 Multi gas detector

OT137 Multi gas detector

Inspect for a selected mix of gases with local alarms, readable results and optional pumped sampling.

  • Select gases for the task

    Specify the sensor combination and measuring ranges for the site rather than relying on a fixed preset.

  • Find a changing concentration

    The listed screen, fast response and configurable alarm levels help the operator follow a leak-search or area check.

  • Support field follow-up

    Alarm record query, self-test and fault indication make it easier to check what happened and whether the instrument is ready.

IP66 or above protection class. Confirm sensor count, sampling accessories, ranges and data-export needs.

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Overview

The OT137 series is an industrial-grade, highly sensitive portable multi-gas detection instrument. It is designed for use in explosion-proof environments for gas leak emergency response, as well as in underground pipelines and mines. This device effectively ensures the safety of personnel and prevents damage to production equipment. The product features a rubber-coated design for a comfortable feel. It primarily measures gas leakage concentrations and can detect various gases depending on the sensor type. The compact size, ease of operation, portability, and excellent shock resistance make it ideal for various applications. The product uses high-resolution color LCD technology, providing a clear and intuitive display.

Key Features

Gas Configuration & Sampling

  • Rapid detection of gas leakage points
  • Adjustable range, carbon film self-suction
  • Fast preheating and quick response time
  • Detects 1 to 6 Gases
  • Wide Gas Selection
  • External Pump Compatible & Pumped Sampling

Alarms & Worker Safety

  • Triple Alarm (Audible, Visual, Vibration)
  • Customizable Alarm Setpoints
  • Multiple Alarm Modes (High/Low, TWA, STEL)
  • Sensor fault detection, self-test function
  • Soundalarm signal, temperature display function

Records & Connectivity

  • Alarm Record Storage
  • Alarm record query function
  • Customizable PC Data Upload

Display & Calibration

  • Large screen color Chinese menu operation
  • High resolution LCD display, curve display
  • Convenient zero adjustment, convenient and quick
  • IP66 or above Waterproof & Dustproof, Color Screen Display

Power & Protection

  • Lowvoltage prompt and automatic shutdown in case of low voltage
  • Standby Time ≥ 8 Hours
  • Intrinsically Safe & Superior Explosion-Proof

Field Options & Customization

  • High Sensitivity & Stable Reliability
  • OEM & ODM & OBM：

Technical Specifications

Suitable gases  combustible/gas toxic/harmful/oxygen, etc l
Detection principle  catalytic combustion type, electrochemical type, infrared type, laser, semiconductor type and so on l
Detection mode  natural diffusion / external pump suction at will (external pump is optional) l
Measurement range  (0–100)% LEL(combustible gases); (0 100) µmol/mol (toxic gases), etc. (depending on gas type) l
Accuracyclass  ±3% FS (combustible/oxygen); ±5% FS (toxic) l
Lowlimitalarm set value  20%LEL(flammable) 2 l
Upperlimit alarm setting  50%LEL(flammable) l
Alarmmode LED,sound, vibration indication alarm, fault and under
voltage Displaymode  LCD color liquid crystal display l
Responsetime  less than 30s l
Environmental temperature -25℃ ~ +55℃ l
Relative humidity (20~93)% l
Supplyvoltage  DC 3.7 V l
Battery capacity  1800 mAh+1000 mAh lithium ion rechargeable battery l
Charging time  <5 h
Standbytime  ≥ 8h
Pressure limit  86kPa~106kPa
Productsize  L157 mm × W88mm × H36mm;
Productweight  about 500 g
Explosion-proof certificate number  CNEx22.1795X
Explosion-proof mark  Ex ib ⅡC T4 Gb/Ex ibD 21T130℃
Protection level  IP66 or above

Videos

Available Gases & Detection Ranges

The gases and ranges below are configuration options. OT137 Multi gas detector; confirm the final sensor combination and ranges with our team.

Common Gas Parameter listing
Gas detected Measuring Range Optional Range Resolution Rat Response Time
LEL -combustible gas 0-100%LEL 0-100%VOL (Infrared or catalytic ) 1%LEL/1%vol ≤10s
carbon monoxide 0-1000PPm 0-500/2000/5000PPm 0.1/1PPm ≤10s
TVOC 0-100PPM 0-100PPM 0.1PPm/1PPM ≤15s
hydrogen 0-100%LEL 0-1000PPM 1%LEL/1PPM ≤15s
natural gas 0-100%LEL 0-100%LEL 1%LEL ≤10s
Oxygen-O2 0-30%VOL 0-30%、0-100%VOL 0.1%vol ≤10s
ozone 0-10PPm 0-20、100PPm 0.01PPm/0.1PPM ≤15s
hydrogen sulfide-H2S 0-100PPm 0-50、200、1000PPm 1/0.1PPm ≤10s
Methane-CH4 0-100%LEL 0-100%VOL 1%LEL/1%vol ≤10s
fluorine 0-10PM 0-1、10PPM 1/0.1PPm ≤15s
hydrogen chloride 0-20PPm 0-20/50PPm/100PPM 0.01/0.1PPm ≤15s
Nitrogen-N2 0-30%VOL 0-30%VOL、100%VOL 0.1%LEL/1PPM ≤10s
hydrogen 0-100%LEL 0-1000PPm 1%LEL/0.1PPm ≤15s
chlorine 0-20PPm 0-10、100PPm 0.1PPm ≤15s
ammonia gas 0-100PPm 0-50、500、1000PPm 1/0.1PPm ≤15s
oxynitride 0-20PPm 0-50、1000PPm 0.1/1PPm ≤15s
methanal 0-20PPm 0-50、100PPm 1/0.1PPm ≤15s
sulfur dioxide 0-20PPm 0-50、1000PPm 0.1/1PPm ≤15s
nitric oxide 0-250PPm 0-500、1000PPm 1PPm ≤15s
nitrogen oxide 0-20PPm 0-50、1000PPm 0.1/1PPm ≤15s
phosphine 0-20PPm 0-20、100PPm 0.1PPm ≤15s
acrylonitrile 0-100PPM 0-100PPm 0.1/1PPm ≤15s
carbon dioxide 0-5000PPm 0-1%/5%/10%VOL(Infrared ) 1PPM/0.01%VOL ≤15s
hydrogen fluoride 0-10PPm 0-1、10、50、100PPM 0.01/0.1PPm ≤15s
Xylene/methylbenzene 0-20PPm 0-5、10、50、100PPm 0.01/0.1PPm ≤15s
oxirane 0-100PPm 0-100PPm 1/0.1PPm ≤15s
For other gases and measuring ranges, please contact us directly!
Note: Not all gases and range are listed, if you need more information, please contact us.

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Tell us the target gas, measuring range, application and quantity. Confirm sensor count, sampling accessories, ranges and data-export needs.

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