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GfG Polytector III G999 / G999S — portable multi-gas detector (up to 7 gases, with pump)
The GfG Polytector III G999 is a versatile, portable multi-gas detector with a built-in pump, enabling measurement of up to seven gases simultaneously. The G999S variant features a special hybrid combustible-gas sensor that measures methane (CH₄) in three ranges (0–10,000 ppm, 0–100% LEL, 0–100% vol.) and hydrogen (0–25% vol.) with a single sensor — ideal for natural-gas or hydrogen applications. Detection can run in diffusion mode or with sampling from confined spaces, and the device is certified for operation in explosion-hazard zones.
The GfG Polytector III G999 is a versatile, portable multi-gas detector with a built-in pump, capable of measuring up to seven gases simultaneously. The G999S variant is fitted with a special hybrid flammable-gas sensor that uses a single sensor to measure methane (CH₄) across three ranges (0–10,000 ppm, 0–100% LEL, 0–100% vol.) and hydrogen (0–25% vol.) — ideal for natural gas or hydrogen applications. Detection can be performed in diffusion mode or by drawing samples from confined spaces, and the device is certified for operation in explosion-hazard zones.
Note: The G999 series comes in several variants (incl. G999, G999S with a CH₄/H₂ hybrid sensor, G999P, G999L). The sensor configuration and variant are selected to match the application.
Key features
- Measurement of up to 7 gases simultaneously; built-in pump.
- CH₄ hybrid sensor (G999S): three ranges + hydrogen measurement with a single sensor.
- Diffusion mode or sampling from confined spaces.
- Optical alarm (screen color change), 103 dB(A) audible and vibrating alarm; flashlight.
- Water- and dust-tight IP67 enclosure.
- G999 series variants (incl. G999, G999S, G999P, G999L) and remote monitoring.
Technical specifications
| Parameter | Value |
|---|---|
| Type | portable multi-gas detector (up to 7 gases), with a built-in pump |
| Measured gases | up to 7 gases; G999S: CH₄ tri-range (0–10,000 ppm / 0–100% LEL / 0–100% vol.) and H₂ 0–25% vol. |
| Operating mode | diffusion or sampling from confined spaces (pump) |
| Dimensions / weight | 68 × 136 × 39 mm / up to 395 g (depending on configuration) |
| Protection rating | IP67 |
| Alarms | optical (orange/red), audible 103 dB(A) (reducible to 90 dB(A)), vibrating; flashlight |
| Operating conditions | −20…+50°C; humidity 5–95% RH; 70–130 kPa |
| Ex marking | I M2 Ex ia db I Mb; II 2G Ex ia db IIC T4 Gb (−20°C ≤ Ta ≤ +50°C) |
| EU certificate | BVS 15 ATEX E 064 X |
| Origin | Made in Germany |
Applications
Gas leak detection (pipelines, ducts, tanks), work in confined spaces, gas industry and gas networks, hydrogen, rescue services.
Frequently asked questions (FAQ)
How many gases does the GfG Polytector III G999 measure?
Up to seven gases simultaneously, and the device has a built-in pump for sampling.
What distinguishes the G999S variant?
It has a hybrid flammable-gas sensor that uses a single sensor to measure methane across three ranges (0–10,000 ppm, 0–100% LEL, 0–100% vol.) and hydrogen (0–25% vol.).
Is the G999 suitable for gas leak detection?
Yes. Thanks to the built-in pump and sampling mode, it works well for detecting leaks in pipelines, ducts and tanks.
Brand & service
GfG — available from SafeTech together with expert sensor configuration selection, calibration, certification and service.
Why SafeTech
- 23 years of experience in gas detection (in business since 2003).
- Distribution and support for the GfG brand; sensor configuration selection for your application.
- In-house service, calibration, certification and adjustment in Suchy Dwór near Gdynia — service across Poland.
- Training and technical support (SafeTech Safety Academy).
Availability & service — Gdynia and Tricity
GfG Polytector III G999 / G999S — portable multi-gas detector (up to 7 gases, with pump) — sales, selection, calibration and service in Gdynia (Suchy Dwór, on the border of Gdynia and the Kosakowo municipality). We serve the Tricity (Gdańsk, Sopot, Gdynia), Rumia, Reda, Wejherowo, the Pomerania region and all of Poland. Ask about a quote and availability.
Accessories and compatible equipment
- Calibration & bump test: stacja GfG DS400, calibration gas mixtures, regulators and pressure-reducing valves for cylinders.
- Sensors & filters: replacement sensors matched to the measured gas, dust and hydrophobic filters.
- Sampling: probe, hose, aspirator bulb (for diffusion versions).
- Carrying & protection: lanyard, clip, holder, transport case, charger/power supply.
Full selection of accessories and parts for this model — request a quote.
