Safety Requirements - GREISINGER GMH 3230 Bedienungsanleitung

GMH3230e.03
How to Operate And Maintain Unit:
a.) When to replace battery:
If and ´bAt´ are shown in the lower display the battery has been used up and needs to be replaced. The unit will, however,
!
operate correctly for a certain time.
If ´bAt´is shown in the upper display the voltage is too low to operate the unit; the battery has been completely used up.
Please note: We recommend to take out battery if unit is not used for a longer period of time.
b) Treat unit and sensor carefully. Use only in accordance with above specification. (do not throw, hit against etc.).
Protect plug and socket from soiling.
c) To disconnect sensor thermoelement plug do not pull at the cable but at the plug.
d) Selection of types of thermoelements:
Prior to carrying out a measurement make sure to check if unit is set to the thermoelement type used (type is shown on the
display shortly after unit has been switched on). Unless the correct thermoelement is set, temperature measurements will be
incorrect.
e) Mains operation:
When using a power supply unit please note that operating voltage has to be 10.5 to 12 V DC.
Do not apply overvoltage!! Cheap 12V-power supply units often have excessive no-load voltage. We, therefore, recommend
using regulated voltage power supply units. Trouble-free operation is guaranteed by our power supply GNG10/3000.
Prior to connecting the plug power supply unit with the mains supply make sure that the operating voltage stated at the plug
power supply unit is identical to the mains voltage.

Safety Requirements:

This unit has been designed and tested in accordance with the safety regulations for electronic devices.
However, its trouble-free operation and reliability cannot be guaranteed unless the standard safety measures and special
safety advises given in this manual will be adhered to when using the unit.
1. Trouble-free operation and reliability of the unit can only be guaranteed if the unit is not subjected to any other climatic conditions
than those stated under "Specification".
2. If the unit is transported from a cold to a warm environment condensation may cause in a failure of the function. In such a case
make sure the unit temperature has adjusted to the ambient temperature before trying a new start-up.
3. If unit is to be connected to other devices (e.g. via serial interface) the circuitry has to be designed most carefully. Internal
connection in third party units (e.g. connection GND and earth) may result in not-permissible voltages impairing or destroying the
unit or another device connected.
Warning: If unit is operated with a defective mains power supply (short circuit from mains voltage to output voltage) this may
result in hazardous voltages at the unit (e.g. sensor socket at interface).
4. If there is a risk whatsoever involved in running it, the unit has to be switched off immediately and to be marked accordingly to
avoid re-starting.
Operator safety may be a risk if:
- there is visible damage to the unit
- the unit is not working as specified
- the unit has been stored under unsuitable conditions for a longer time.
In case of doubt, please return unit to manufacturer for repair and/or maintenance.
Connections
1
The mains socket is located at the left side of the measuring instrument.
2 3
Interface : Connection for electr. isolated interface
1
adapter (accessories: GRS 3100)
2
Sensor connection CH2: channel2
3
Sensor connection CH1: channel1
H35.0.01.6C-03 page 2 of 8