Senko SGT Disposable Portable Single Gas Detector


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The detector uses natural diffusion into electrochemical sensors with it’s state of the art electronics and software to give reliable and repeatable readings. The casing is a rubber based special high strength material giving it an IP67 rating making it anti-slip, completely dust proof and water proof up to 1 meter. The sensor has inbuilt data logging which will timestamp the gas level readings and alarms. This data can be downloaded to a PC using the SGT IR Link for analysis. The gas detector can be operated continuously for two years without replacement and then can be safely disposed of.

  • IEC Ex approved
  • Large LCD display of alarms and current concentration
  • Clearable Max and Min gas concentration recorded
  • Adjustable alarm levels using the SGT IR Link
  • Self testing and little calibration required
  • Lifetime remaining displayed in months
  • Self zero gas adjustment function
  • Data uploading of concentration and alarms (see implementation section)

Poisoning: Senko sensors are designed to operate in a wide range of harsh environments and conditions. However, it is important that exposure to high concentrations of solvent vapours is avoided, both during storage and operation.



SENKO are a gas sensor developer and manufacturer, established in 2004 in South Korea. Their portable gas monitors are being used and marketed by many well-known companies in the gas detection industry. Their cutting-edge unique portable monitor design, provides clients with a robust, reliable, and cost-effective portable gas monitor. Korea SENKO Gas detectors are used to measure and indicate the concentration of various gases in air and can be used as an early detection system against increase in concentration of life threatening gases such as carbon dioxide (CO2), carbon monoxide (CO) and ammonia (NH3) apart from combustible gases. SENKO Gas detectors product range:
  • Senko SGT Portable Single Gas Detector
  • Senko MGT Portable Multi Gas Detector
  • Senko SP Secure Portable Gas Leak Detector
  • Senko SP2nd Portable Single Gas Detector
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O2 CO SO2 H2 H2S


Measuring type  (Electrochemical Cell)
Measuring method Diffusion Type (Option: Sampling Type[Sp-pump 101])
Measuring range 0~30%Vol 0~500ppm 0~20ppm 0~1000ppm 0~100ppm 0~100ppm
Sensor life time 2 year > 2 year > 2 year > 2 year > 2 year > 2 year
Resolution 0.1%VOL 1ppm 0.1ppm 5ppm 1ppm 1ppm
Parameter Control User Selectable via SGT IR Link and PC Software
Display LCD Display (Back-light)
Alarm display RED, Flashing LEDs (Light-Emitting Diode)
Alarm level set User Selectable via SGT IR Link and PC Software
Data Log 30 most recent events
Mounting type Belt Clip
Program set mode User Selectable via SGT IR Link and PC Software
Operating temperature -40°C to +50°C
-35°C to +50°C (for O2)
Operating humidity 5% to 95% RH(Non-condensing)
Battery Lithium battery
Materianl Polycarbonate and rubber
Dimensions 54(W) x 91(H) 32(D)mm
Weight 93g
Approval Ex ia IIC T4 Ga/ IP67 (KTL, IECEx)
Option Sapling Pump[SP-Pump101], SENKO IR LINK, Docking Station
Warranty 2years


Hazardous Areas (IEC Ex Certified) IEC Ex approved gas detectors and sensors for use in Zone 1 and Zone 2 areas within Australia for both Toxic and Flammable gases.

Hazardous Areas are areas in which an explosive gas atmosphere is or may be expected to be present, in quantities such as to require special precautions for the construction installation and use of equipment construction, installation and use of equipment. Hazardous areas are classified into 3 zones based upon the frequency of the occurrence and duration of an explosive gas atmosphere, as follows:

Zone 0 – Area in which an explosive gas atmosphere is present continuously or for long periods or frequently.

Zone 1 – Area in which an explosive gas atmosphere is in which an explosive gas atmosphere is likely to occur in normal likely to occur in normal operation occasionally.

Zone 2 – Area in which an explosive gas atmosphere is not likely to occur in normal operation but, if it does occur, will persist will persist for a short period for a short period only.

Non hazardous area (safe area) – A non hazardous area is an area in which an explosive atmosphere is not expected to be present.

As per IEC60079-10-1 and AS/NZS 60079.29.2:2016

Lift Shaft Wells Oxygen sensors are often placed in lift shaft wells to measure the atmosphere prior to entry. Problems arise due to the pressure changes in the left shaft well due to the air movements associated with the lift.resulting in false alarms . There is also an issue associated with safe work permits for access into the lift shaft area when the oxygen sensor requires calibration or replacement. The GDA 4500 system uses a vacuum pump (dc brushless) , a flow fail mechanism and a sensor  to extract the gas via a 6mm ID tubing. The Nylon tube is fitted with a filter element to provide dust filtering and prevent mycological build up in the sampling line.

Designed, Manufactured and Supported in Australia.

Confined Space Gas Monitors Confined spaces have a high risk of poisonous gases and man-down incidents caused by oxygen depletion. Responders or workers are required to be protected by ongoing, continuous atmospheric monitoring. SENKO Gas Detection Australia’s portable gas detectors are built to protect you and your staff complying with Australia regulations. With IP 67 Waterproof and IEC Ex Approved Explosion proof casing, data logging, simple set up and calibration. The SENKO Gas Detection Australia Line of Portables are ready to go when you are.


Order info

SENKO SGT Portable Gas Detector Kit

  • SGT Portable Gas Detector
  • Mains Charger
  • Gassing Cap

User Manual

Part Number Gas Sensor Technology Range Resolution Sensor life time
SGT-001 Oxygen (O₂) * Electrochemical Cell 0-30% Vol 0.1% Vol < 2 Years
SGT-002 Carbon Monoxide (CO) Electrochemical Cell 0-500 ppm 1 ppm > 2 Years
SGT-003 Sulfur Dioxide (SO₂) Electrochemical Cell 0-20 ppm 0.1ppm > 2 Years
SGT-004 Hydrogen (H₂) Electrochemical Cell 0-1000 ppm 5 ppm > 2 Years
SGT-005 Hydrogen Sulfide (H₂S) Electrochemical Cell 0-100 ppm 1 ppm > 2 Years
SGT-006 Ammonia (NH₃) Electrochemical Cell 0-100 ppm 1 ppm > 2 Years
SGT-007 Chlorine (Cl₂) Electrochemical Cell 0-100 ppm 1 ppm > 2 Years
SGT-008 Nitrogen dioxide (NO₂) Electrochemical Cell 0-20 ppm 0.1ppm > 2 Years


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