In Conjunction With A Controller; Comment On Controlling Several Measuring Heads By One Controller - Dräger VarioGard IR EX Gebrauchsanweisung

In Conjunction With a Controller:

– Warning prior to reaching explosive gas concentrations.
– Automatic initiation of countermeasures (e.g. activation of additional
ventilation).
– Warning in the case of equipment faults.

Comment on Controlling Several Measuring Heads by One Controller:

Please note that a transmitter can have a current consumption up to
250 mA.
For this reason, it is necessary, e.g. in the case of the VarioGard controller
(even in connection with a converter module), that an external power supply
is used if more than two transmitters are to be connected (refer to table).
Type
Power supply
Up to 10 transmitters
24VDC, 5A
Power supply
Up to 20 transmitters
24 VDC, 10A
Do Not Operate in Potentially Explosive Areas
The transmitter is not approved for use in potentially explosive areas.
No. of transmitters
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