• IMPA 330586 GAS DETECTOR COMBINATION GFG G999M detector WITH NiMH BATTERY PACK AND INTERNAL PUMP - O2/LEL/CO/H2S/CO2 (Carbon Dioxide)

IMPA 330586 GAS DETECTOR COMBINATION GFG G999M detector WITH NiMH BATTERY PACK AND INTERNAL PUMP - O2/LEL/CO/H2S/CO2 (Carbon Dioxide)

  • Product Code: G999M
  • Product SKU:
  • Availability: In Stock

Model: G999M with NiMH battery pack and internal pump

With the following sensors:

O2, Range 0 to 25 Vol%

CH4,Range 0 to 100 % LEL

CO, Range 0 to 500 ppm

H2S, Range 0 to 100 ppm

IR CO2 , Range 0 to 5 Vol%

Drop-in charger DIC 888/999 with EU plug-in charger

MADE IN GERMANY


Polytector III G999M

The Polytector III G999M combines the requirements of a modern multi-gas detector for personal use in mining and in Ex zone 0 with the ability to clear confined spaces, shafts and vessels by means of an integrated pump. The robust and practical multi-gas detector is equipped with a catalytic combustion sensor for combustible gases, an infrared sensor for CO2 and 3 electrochemical sensors for toxic gases as well as oxygen. In this configuration, the G999M is versatile in use and reliably detects all potentially dangerous gases and vapors underground.


The Polytector III G999M is the best choice for personal protection against a wide range of gas dangers in mining and in Ex-Zone 0 and clearance before entering shafts and confined spaces. The multi-gas detector is equipped with 5 sensors for the detection of up to 7 combustible and toxic gases as well as oxygen. Clearance measurement is done with the integrated pump.

Safety and operation
The Polytector III G999M is certified for use up to Ex zone 0 and protected against the ingress of water and dust according to protection class IP67, making the multi-gas detector suitable for challenging applications. The housing made of rubberized polycarbonate offers excellent protection against shocks and vibrations. Its effective design and the robust crocodile clip ensure high wearing comfort. The G999C is operated via three buttons and the color-backlit display. For better usability, the screen can be rotated by 180 degrees if required, and an explosion-proof flashlight will solve any problems with poor light conditions. 


Alarm, battery life and pump performance

If a threshold value is exceeded, the G999M will warn its wearer in three ways: via light signals, vibration and a loud horn (103 db(A)). The integrated NiMH battery has a runtime of up to 130 hours, depending on the operating mode and sensor configuration. The metering pump delivers around 0.6 liters per minute from a distance of up to 100 meters.


Accessories
The DS400/404 docking station can be used to charge, calibrate and adjust the gas detectors of the G999 series. To better distinguish gas detection devices for different applications, they can be marked with diffusion covers in five signal colors. Clearance measurement is made easier with various suction tubes and floating probes. A complete overview of the accessories and all extensions offered for the G999 series can be found at the bottom of this page.

Model variants
There are four other models available in the G999 series: the G999CG999SG999P and G999M. All of these detectors offer slots for 3 electrochemical and an optional (combination) infrared sensor. Depending on the model variant, G999s also come with a catalytic sensor (G999C & G999M), a PID sensor (G999P), a fourth electrochemical sensor (G999E) or a CC/TC or CC/TC/SC sensor (G999S). This allows you to set up a variety of combinations of up to eight gases or measuring ranges for simultaneous monitoring. The G999M, which was developed specifically for the mining sector, is not only approved for use in Ex zone 0 but also received the M1 label for safe use underground. If you require a multi-gas detector without an integrated pump, the handy Microtector G888 is a great choice. It comes in two different versions: the G888C for use in Ex zone 1 and the G888M, which can be used in Ex zone 0 and is approved for mining applications. Both models feature slots for up to 5 sensors (3x EC, 1x CC, 1x IR).


Downloads


The G999M is a specific variant of the GfG Polytector III G999 series, a multi-gas detector designed for safe use in Ex Zone 0. It features an integrated NiMH battery pack and an internal pump for sampling gases in confined spaces. 
Key specifications and features of the G999M include:
  • Battery: An integrated NiMH battery provides an operating time of up to 130 hours, depending on the specific operating mode and sensor configuration.
  • Pump: The internal metering pump can sample approximately 0.6 liters per minute from a distance of up to 100 meters. This makes it suitable for clearance measurements before entering potentially hazardous areas.
  • Detection: It can detect up to seven different gases simultaneously using various sensor combinations to warn users of toxic, flammable gases/vapors, and oxygen deficiency or excess.
  • Alarms: The device warns its wearer in three ways when a threshold is exceeded: visual light signals, vibration, and a loud 103 dB(A) horn.
  • Durability: The housing is made of rubberized polycarbonate, providing excellent protection against shocks and vibrations, and is certified as IP67 for dust and water protection. 


A multi-gas detector for O2/LEL/CO/H2S/CO2 is a portable safety device that simultaneously monitors five critical gases: Oxygen (O2 - deficiency/enrichment), Lower Explosive Limit (LEL - flammable gases like methane), Carbon Monoxide (CO - toxic), Hydrogen Sulfide (H2S - toxic/flammable), and Carbon Dioxide (CO2 - asphyxiant), providing real-time readings and alarms (sound/light/vibration) for hazardous environments like confined spaces, oil & gas, and mining to prevent accidents. 

Key Gases Detected & Their Risks:

Oxygen (O2): Detects dangerous O2 levels, preventing asphyxiation (low O2) or fire/explosion risks (high O2).

Lower Explosive Limit (LEL): Measures flammable gases (like methane, propane) to warn of explosion hazards, often showing % of the LEL.

Carbon Monoxide (CO): A highly toxic, odorless gas from incomplete combustion, posing severe health risks.

Hydrogen Sulfide (H2S): A poisonous gas with a "rotten egg" smell that can quickly become deadly, common in sewers/refineries.

Carbon Dioxide (CO2): An asphyxiant, especially in confined spaces, that displaces oxygen. 

Features & Use:

Portable & Wearable: Often clip-on designs for hands-free monitoring.

Real-Time Data: Large LCD displays readings for all gases simultaneously.

Alarms: Audible, visual, and vibrating alerts for immediate danger.

Applications: Ideal for confined space entry (tunnels, tanks), emergency response, and industrial sites (oil, chemical, mining). 

IMO Resolution MSC.581(110), effective 3 December 2025, replaces A.1050(27) with revised recommendations for entering enclosed spaces on ships to prevent fatalities. Key requirements include mandatory CO2 monitoring in addition to O2, H2S, and LEL, creation of a ship-specific enclosed space register, prohibition of single-person entry, and mandatory risk assessment by a competent person.
Key Convention Requirements for MSC.581(110)
  • Atmosphere Testing & Equipment: Personal gas detectors must measure CO₂ (max limit 0.5% or 5,000 ppm), O₂, H₂S, and LEL (Lower Explosive Limit).
  • Enclosed Space Register: Vessels must maintain a formal, updated register listing all potential enclosed spaces.
  • Risk Assessment & Entry Permit: A joint ship-shore risk assessment must be conducted before entry, and all spaces are considered hazardous until proven safe.
  • No Solo Entry: A mandatory "buddy system" or team approach is required; single-person entry is prohibited.
  • Definitions: Specific guidance is added for "connected" and "adjacent" spaces, which may require monitoring if they share ventilation or are adjacent to cargo hold spaces.
  • Training & Drills: Enhanced emergency rescue procedures and training drills are mandatory, aligned with SOLAS III/19.
  • Signage: Entry points must be clearly marked as safe or unsafe to enter.
These requirements apply to all ship types to address the high rate of fatal accidents during confined space entry.

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