MGT-N – Multi-Gas Monitor for 1-4 Gases, with IR Sensor

SENKO MGT-N – Multi-Gas Detector with an Infrared (NDIR) Sensor

Senko MGT-N is a portable multi-gas detector designed for continuous measurement of hazardous gas concentrations. It provides reliable protection by simultaneously monitoring up to 4 gases (O₂, CO, H₂S, and flammable gases) and issuing immediate alarm signals in the event of a health risk.

It is suitable for industrial environments, including applications with a risk of explosive or toxic gases. When equipped with a pump and probe (optional), it can be used to monitor gases in confined spaces (shafts, reservoirs, etc.). The model uses an infrared (NDIR) sensor for flammable gases, which operates independently of oxygen levels and ensures significantly longer battery life.

Advantages:

• Extremely long battery life—up to 60 days on a single charge
• Reliable operation in environments with low or no oxygen content
• Resistance to sensor “poisoning” (silicones, lead, etc.)
• Fast sensor response;
• Compact;
• 360° alarm, including:
  • a powerful 90 dB siren;
  • strong vibration;
  • bright red LED indicator (360° visibility);
• Replaceable sensors and battery;
• Long-term operation.

Measured gases and configurations

The Senko MGT-N can be configured to suit the needs of the operating environment with 2, 3, or 4 sensors:

• 4 gases (standard configuration): O₂, CO, H₂S, explosive gases
• 3 gases: combination depending on the application
• 2 gases: basic protection (e.g., O₂ + CO or O₂ + explosive gases)

This allows for an optimal balance between cost, maintenance, and the required level of safety.

Key Features

• ATEX certification for use in explosive atmospheres (Zone 0)
• Simultaneous measurement of up to 4 gases
• Sensor types:
  • electrochemical (O₂, CO, H₂S)
  • infrared (NDIR) for flammable gases
• Memory: the last 30 alarm events + data for the last 2 months
• Up to 60 days of operation on a single charge
• Protection rating: IP66 / IP67
• Operating temperature: -20°C to +45°C
• Bump test and calibration via the Docking Station (optional)

Measurement ranges:

• Explosive gases – 0–100% LEL, resolution 1% LEL;
• Oxygen (O2) – 0–30 %Vol, resolution 0.1 % Vol;
• Carbon monoxide (CO) – 0–500 ppm, resolution 1 ppm;
• Hydrogen sulfide (H₂S) – 0–100 ppm, resolution 0.1 ppm.

The display shows the current concentration and the level of the activated alarm. The Senko MGT-P can be configured via the optional IR module, which allows you to adjust alarm levels and download data from the device’s memory. The sensor for flammable and explosive gases is calibrated for methane (CH4) and is effective across the entire range of 0–100% LEL.

Advantages of the IR Sensor

The Senko MGT-N model is designed to work with an infrared sensor for explosive and flammable gases, which ensures a much longer battery life for the device. With an IR sensor, the detector’s battery needs to be recharged only once every 2 months. An additional advantage is the long service life of the flammable gas sensor, which is at least 5 years. In practice, it does not need to be replaced, as it is virtually a lifetime sensor.

Reliable Detection and Rapid Response

The detector is equipped with highly sensitive sensors that respond quickly. When hazardous concentrations are reached, a two-stage alarm is activated:

• Explosive gases (methane) – 10 / 30% LEL;
• Oxygen – 19 / 23 %Vol;
• Carbon monoxide – 30 / 60 ppm;
• Hydrogen sulfide – 10 / 20 ppm.

Small and easy to carry

The Senko MGT-N is compact—about the size of a cigarette pack. It weighs only 240 g, making it lighter than most other similar detectors on the market. It has a clip on the back for attaching it to clothing or a bag.

Event logger for analysis and reporting

The Senko MGT-N gas detector stores records of:

• the last 30 alarm events
• peak concentrations
• measurement data for a period of up to 2 months
• test records (Bump Test Log)

Display of time-weighted average and short-term exposure (TWA / STEL)

The Senko MGT-N monitors not only instantaneous gas concentrations but also cumulative exposure over time, triggering an alarm when preset TWA and STEL values are reached. This is particularly important during prolonged work in confined spaces.

Time-Weighted Average (TWA)
This represents the average concentration of a given gas over an eight-hour workday or a 40-hour workweek at which no significant adverse health effects are expected.

Factory-set values:

• carbon monoxide (CO) – 30 ppm
• hydrogen sulfide (H₂S) – 10 ppm

Short-Term Exposure Limit (STEL)
Defines the maximum concentration to which workers may be exposed over the last 15 minutes without serious health risk.

Factory-set values:

• carbon monoxide (CO) – 200 ppm
• hydrogen sulfide (H₂S) – 15 ppm

Additional Materials

Brochure

MGT Brochure_English

MGT Brochure_Russia

MGT Operating Instructions_English

Video