Start-up
Parameterisation
Beck GmbH
Druckkontrolltechnik
Ferdinand-Steinbeis-Straße 4
71144 Steinenbronn
Operating instructions – Pressure Switch - Model-930...EX
Rev.9
Page 9 of 18
Documentation
Operating instructions, conformity declaration, EC design test certificate
System and zonal plan
Proof of adherence to explosion protection regulations (see Appendix 9.34)
Equipment selection: category, Equipment Protection Level EPL, temperature
class, explosion group, …
Proof of adherence to intrinsic safety requirements
5 Start-up
Before voltage is applied to the equipment the following checks must be performed:
Check that screws are firmly seated in
Connecting terminals, protective earth conductor terminals and
potential equalisation terminals
Housing cover
Check
The torque of the cable lead-in
The tightness of the seal provided by the cable lead-in
Check whether the equipment is ready for operation
The parameterisation for this application must have been performed
All interfaces such as inputs and outputs for control purposes must be connected
and ready for operation
5.1 Parameterisation
Equipment parameterisation
Define all application-specific parameters.
Adjustment of the pressure ranges
With this pressure switch the pressure can be adjusted without a pressure gauge using a
scaled adjustment knob
The switching differential can also be adjusted with a screwdriver by the adjustment screw
with the identification “-
∆
p+”
Type
Adjustment range
for trip pressure
from to
Switching
differential
Tolerance
band of
930.80 EX
20 300 Pa
10 Pa
±15 %
930.83 EX
50 500 Pa
20 Pa
±15 %
930.84 EX
30 400 Pa
15 Pa
±15 %
930.85 EX
200 1000 Pa
100 Pa
±15 %
930.86 EX
500 2500 Pa
150 Pa
±15 %
930.87 EX 1000 5000 Pa
250 Pa
±15 %
Note:
Switching pressure specifications apply to vertical installation which is also the recommended position
with pressure-pipe connections pointing downwards. If the switches are installed horizontally with AMP
connection terminals uppermost, the switching values are approx. 20 Pa higher.
Once the power supply is applied, the equipment is ready for operation immediately.
