Orbit Merret OMB 451UNI Manual page 7

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-
!
Excitation has the minus pole common with the
input - the bracket no. 22 - GND and you may set its
value by trimmer above the bracket no. 16
Maximum of 250 mA may be connected to "INPUT - I" (bracket no. 23) , i.e. 10-times range overload.
!
Mind the correct connection/mistaking of current - voltage input.
Destruction of measuring resistance in current input (15R) may occur.
INSTRUMENT CONNECTION
RxD/L+
TxD/L-
GND
GND
Analog output - I
Analog output - U
10 11 12
7 8 9 13 14 15
Relays
Open collector
+
INPUT C2/Reset
+
INPUT B2
+ INPUT A2
+
+
+
INPUT A1
-
GND
+ Excitation
INPUT - U
-
*GND - U/I0,5
-
*GND - I5
INPUT - I
16 17 18 19 20 21 22 23 24 25
CJC
!
- +
+
DC, PM
RTD, OHM, Ni
E+ S+ S- E--
E+ S+ ES--
ES+ ES-
-
+
T/C
-
+ DU
INSTRUCTIONS FOR USE OMB 450UNI
OMB 451UQC
INPUT C1/Reset
INPUT B1
Option A PWR
INPUT - U
INPUT - U
GND - U
GND - I
INPUT - I
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