H74.0.05.6C-06
Operating Manual GMH 3651
page 4 of 18
4 Product Description
4.1 Scope of supply
The scope of supply includes:
GMH 3651 with 9V-battery
Oxygen sensor GWO 3600
Operating Manual
4.2 Operation and maintenance advice
1. Battery operation
If
and
‘bAt’ are shown in the lower display the battery has been used up and needs to be replaced.
However, the device will operate correctly for a certain time. If ‘bAt’ is shown in the upper display the
voltage is too low to operate the device; the battery has been completely used up.
The battery has to be taken out, when storing device above 50 °C.
We recommend taking out battery if device is not used for a longer period of time.
After recommissioning the real-time clock has to be set again.
2. Mains operation with power supply
When using a power supply please note that operating voltage has to be 10.5 to 12 V DC.
Do not apply overvoltage!! Cheap 12V-power supplies often have excessive no-load voltage.
We, therefore, recommend using regulated voltage power supplies.
Trouble-free operation is guaranteed by our power supply GNG10/3000.
Prior to connecting the power supply to the mains make sure that the operating voltage stated at the
power supply is identical to the mains voltage.
3. Treat device and sensor carefully. Use only in accordance with above specification. (do not throw, hit
against etc.). Protect plug and socket from soiling.
4.3 Start of Operation
Switch the device on with the key
“ON OFF”. The Instrument is performing a self diagnosis, during this time
all display segment are shown.
Afterwards the instrument signals, if it was user adjusted
(„
[ORR
“)
The device starts measurement afterwards.
