HBM RM4220 Bedienungsanleitung Seite 39

RM4220
· Zero point configuration W2 onto position 2 (Zero =  0.035 mV/V)
· 3 Hz Bandwidth (factory setting)
Adjustment
· Release the transducer.
· Adjust PT2 to 0 V (4 mA) with a voltmeter (ammeter). If the zero point is
unstable, then replace the zero point configuration W2 onto position 3 and
adjust PT2 again.
· Load the transducer with the favored final value.
· Adjust PT1 to 10 V (20 mA) with a voltmeter (ammeter).
· Verify the zero point configuration once again.
· The measurement chain is now adjusted and ready for operation.
Remark
For 10 V (4/20 mA) output:
· Switch INV1 synchronize to position 10 V (4/20 mA)
· Switch INV2 and INV3 synchronize to 6--wire technique
· Switch INV4 synchronize to the excitation voltage 10 V DC
· Amplifier switch W1 onto position 4
· Zero point configuration W2 onto position 6 (zero =  1.730 mV/V)
· Load the transducer with the favoured final value and adjust thereupon vol-
tage final value V
· Verify V = 10V (I
out
just PT1 in the way, that it applies V
· Release the transducer, adjust PT2 to 0 V (4 mA).
· Verify the zero point configuration once again.
· The measurement chain is now adjusted and ready for operation.
A1091--21 de/en
G =
sensitivity ⋅ excitation voltage
(current final value I
m
20 mA) for the zero point, if this is not the case, ad-
out =
20
).
m
= 10 V (I
out out =
20 mA).
39
HBM