WIKA 230.15-851 - Manual (Page 7)

GB
11275945 01/2009 GB/D/F/E
WIKA Operating instructions Model 230.15 without/with 851.3 per ATEX 7
4. Requirements for use ... / 5. Switch contacts
Temperature class of the
ambient atmosphere
(ignition temperature) Permissible maximum
medium temperature
(in the pressure system)
T 6 ( > 85 °C) +70 °C
T 5 ( > 100 °C) +85 °C
all other temperature classes +100 °C
Attention! In the case of gaseous substances, the temperature may
increase due to compression warming. In these cases it may be
necessary to throttle the rate of change of pressure or reduce the
permissible temperature of the pressure medium.
Table 1: Permissible medium temperature
5. Switch contacts
Switching function
The switching function is identified by the code ’3’.
851. 3 = SPDT contact
Electrical load
Max. switching voltage: 24 VDC / VAC
Max. load: 10 W
Max. current: 0.5 A
Wiring details
 The electrical connections must only be made by qualified
personnel
 Cable output 3 m long, conductor cross section 0.14 mm 2 ,
flying leads
 The terminal assignment is stated on the pressure gauge's
connection plate
The gauges do not have integrated overcurrent
protection. If overcurrent protection is required,
this has to be provided externally.
 The instruments must be connected to the equipotential bonding
of the plant!
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