Tetra 3 — Portable Multi-Gas Detector (4 Gases, Extended Sensor Range)
Country: United Kingdom · Model: Tetra 3
A portable diffusion gas detector for four gases, namely carbon monoxide, methane, oxygen and hydrogen sulphide. The case is 114×71×48 mm tapering to 20 mm, the weight is 295 g, and everything is operated with one button. The extended sensor range adds ammonia, ozone, sulphur dioxide, CO with an H2 filter and infrared CO2 for safe areas.
- Gases
- CO, CH4 (flammable), O2, H2S; optionally NH3, O3, SO2, CO with H2 filter, IR CO2 (safe areas only)
- Dimensions / weight
- 114×71×48 mm (tapering to 20 mm); 295 g
- Alarm
- 95 dB, different tones for alarm levels, vibration
- Display
- backlit graphic LCD, all channels at once, peak values and TWA
Technical specifications
| Gases | CO, CH4 (flammable), O2, H2S; optionally NH3, O3, SO2, CO with H2 filter, IR CO2 (safe areas only) |
|---|---|
| Dimensions / weight | 114×71×48 mm (tapering to 20 mm); 295 g |
| Alarm | 95 dB, different tones for alarm levels, vibration |
| Display | backlit graphic LCD, all channels at once, peak values and TWA |
| Datalog | 50 h at a 1 min interval (> 12 000 records of 4 channels), > 5000 events |
| Battery | Li-ion: 5 h charge — ≥ 12 h operation; 12 h charge — ≥ 14 h |
| Principle | diffusion (pump — optional per catalogue) |
| Industries | water industry, telecom, food industry, brewing, hydrocarbons |
Specifications are taken from the manufacturer’s technical documentation. Updated .
Description
The four sensors are housed in a case resistant to impacts, water, dust and vibration. A single button controls all functions, so the instrument is convenient to use with gloves. The backlit graphic LCD shows all channels at once, the battery charge symbol and a reminder of the calibration due date, and in the review mode the peak values and TWA are visible. The 95 dB audible alarm has different tones for alarm levels, and a vibration alarm works in addition. The datalog holds 50 hours at a 1 minute interval, which is over 12 000 records on four channels, plus over 5000 events and a threshold log for a set level. The instrument is used to monitor the air in manholes, chambers and confined spaces during work in water and gas supply, telecommunications, the food industry, brewing and the hydrocarbon sector. The principle is diffusion, and a pump is optional per the catalogue.
How to choose
The gas composition decides whether the basic set CO, CH4, O2, H2S is enough. For ammonia, ozone or SO2 the extended set is taken, and at metallurgical plants CO with an H2 filter. The IR CO2 sensor is permitted only in safe areas. After 5 hours of charging, the lithium-ion battery gives at least 12 hours of operation, and after 12 hours of charging at least 14 hours for a four-gas instrument with a flammable gas sensor. For one or two gases see UnoIQ and DuoIQ with replaceable modules.
Request a price and lead time
Tetra 3 — Portable Multi-Gas Detector (4 Gases, Extended Sensor Range). We reply within one business day.
Or email office@usk.ua or call +38 (044) 339-50-20.
FAQ
Which gases does Tetra 3 monitor?
As standard CO, flammable gases (CH4), O2 and H2S. Optionally NH3, O3, SO2, CO with an H2 filter and infrared CO2 for safe areas.
How long does Tetra 3 run on one charge?
After 5 hours of charging at least 12 hours, after 12 hours of charging at least 14 hours for a four-gas instrument with a flammable gas sensor.
How much data does the datalog store?
50 hours at a 1 minute interval, over 12 000 records on four channels, and also over 5000 events.
How loud is the alarm?
95 dB with different tones for alarm levels and a vibration alarm.
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