Gas Data GFM 436, User Manual

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9ENG8008 GFM436 User Manual
GFM436 Product Specification- 15
Operation is extremely simple, yet the readings obtained are highly accurate. The instrument uses Gas Data's
proprietary infra-red methane and carbon dioxide sensors and a combination of industry standard sensors for the
other parameters.
The GFM436 has a rechargeable Nickel Metal Hydride battery pack giving around eight hours use between charges.
A universal input mains battery charger unit is supplied with the instrument. Additional field replaceable battery
packs and an in car 12V DC powered charger are also available as optional extras.
To help conserve battery life, the GFM436 features an auto power off facility. It will switch itself off after 15 minutes
if no keys are pressed or there is no USB communication activity. During unattended data logging, it can be set to
shut itself down after taking a sample and turn itself back on to take the next sample. The instrument will also
switch off if the battery voltage is too low for it to operate.
The GFM436 features data storage with three-layer alphanumeric labelling of sample points and unattended data
logging capability. Data is stored in non-volatile FLASH memory with a capacity of approximately 3000 data sets