The main task of the GM 5 is to measure hydrogen, methane and propane. The GM 5 can also be used for gas leak detection with hydrogen mixtures (tracer gas technology).

The device monitors the aspirated volume flow and can adapt to the changed measuring environment. It can preset, monitor and readjust the volume flow, too.

For commissioning, simply select a task in the main menu, e.g. gas detection, and the measuring instrument then automatically sets the sensor selection, measuring range, pump output and alarm message according to a defined programme.

Maximum ease of maintenance and maximum availability are offered to the user by the fact that the "intelligent" measuring sensors can be quickly replaced if necessary without configuration problems.

The symbolism corresponds to the DVGW G465 supplement.

According to The German Gas and Water Adminstration (DVGW) Regulation G465-4 for Equipment technology for checking gas pipes and gas systems, high demands are placed on gas detection and gas concentration measurement devices, such as automatic heavy gas detection, lower detection limit, explosion protection, etc. The GM 5 is a multifunctional measurement instrument that completely fulfills the requirements of the G465-4 and is characterized both by ease of use and handling.

Contents of delivery

GM 5 with the selected sensors
Carrying Strap
Carrying Case
Telescopic Probe
NiCd Batteries
230V charger
Socket wrench
User Manual
Compliance Certificate

Variants

G01.810: Semiconductor, Catalytic Bead, Thermal Conductor & Infrared. Measurements from a few ppm to 100 vol.% and heavy gas detection for ground air measurement

G01.815: Semiconductor, Catalytic Bead & Thermal Conductor. Measurements from a few ppm to 100 vol.%

G01.820: Semiconductor & Thermal Conductor. Measurements from a few ppm to 100 vol.%

G01.825: Semiconductor & Thermal Conductor. Measurements from a few ppm to 100 vol.% Hydrogen

G01.826: Semiconductor & Thermal Conductor. Measurements from a few ppm to 100 vol.% Switchable indicator between methane and propane

	GM 5	GM 3100
Main purpose	Hydrogen	Methane, Biogas
Main gases	H2 Hydrogen CH4 Methane C3H8 Propane	CH4 Methane
Additional to first gas as option	CO2 Carbon dioxide	CO2 Carbon dioxide H2S Hydrogen sulphide O2 Oxygen CO Carbon monoxide

Technical data
Display	LCD graphic display, automatic backlight
Sensor	Semiconductor Thermal tone Thermal conductivity Infrared for CO2 (optional)
Measurement range	1ppm - 2,2 Vol.% CH4 0 - 100 % UEG 0 - 100 Vol.% CH4 0 - 100 Vol.% CO2 (optional)
Pump	Diaphragm pump, flow rate adjustable and monitored
Gases	Methane, propane, hydrogen, carbon dioxide
Sensitivity	1 ppm
Protection class	IP54
EX protection	EX d ib IIB T3 Gb, Category II 2G applicable for Zone 1
Battery	Batteries 3x 1,5 V Mono or rechargeable batteries 3x 1,2 V Mono
Operating Time	with batteries, typically 12 hours
Weight	approx. 1.8kg
Dimensions	215 x 60 x 100 mm