H69.0.01.6C-02
Operating Manual GMH 285 / GMH 285-BNC
page 3 of 8
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3 Safety Requirements
This device 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 device.
1. Trouble-free operation and reliability of the device can only be guaranteed if the device is not subjected to
any other climatic conditions than those stated under "Specification".
If the device 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 device temperature has adjusted to the ambient temperature
before trying a new start-up.
2.
WARNING:
If there is a risk whatsoever involved in running it, the device 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 device
- the device is not working as specified
- the device has been stored under unsuitable conditions for a longer time.
In case of doubt, please return device to manufacturer for repair or maintenance.
3.
WARNING:
Do not use these products as safety or emergency stop devices or in any other application
where failure of the product could result in personal injury or material damage.
Failure to comply with these instructions could result in death or serious injury and material
damage.
4 Display and Control Elements
4.1 Display elements
main display standard
Display of the current temperature
arrow up
arrow down
HLD
BAT
Display of maximum temperature
Display of minimum temperature
Display of Hold-value
BAT-Warning: pls. change battery
4.2 Control elements
key 1:
on/off key,
press shortly: reactivate Backlight
key 2:
Mode
press shortly: minimum value
press again: maximum value
press again: return to standard display
press for 2 sec.: reset minimum and maximum values
key 3:
Hold:
press shortly: The cu
rrent value is ‚frozen‘
(hold-
function), ‘HLD’ is displayed
4.3 Connections
interface:
connection for galv. Isolated interface adapter
(accessory: GRS 3100, GRS3105 or USB3100)
BNC-socket (GMH 285-BNC)
or 3.5mm audio socket (GMH 285)
:
Connection for Pt1000 temperature probe
