Instrument Connection - Orbit Merret OMB 451UNI Manual

3

INSTRUMENT CONNECTION

The instrument supply leads should not be in proximity of the incoming low-potential signals. Contactors, motors with larger
input power should not be in proximity of the instrument. The leads into the instrument input (measured quantity) should be
in sufficient distance from all power leads and appliances. Provided this cannot be secured it is necessary to use shielded
leads with connection to ground (bracket E).
The instruments are tested in compliance with standards for use in industrial area, yet we recommend to abide by the above
mentioned principles.
MEASURING RANGES
Type Input I
DC
PM 0...5/20 mA/4...20 mA
OHM 0...0,1/1/10/100 kΪ/Autorange
Pt 100/Pt 500/ Pt 1 000
RTD-Pt
Cu 50/100
RTD-Cu
RTD-Ni Ni 1 000/10 000
T/C J/K/T/E/B/S/R/N/L
Linear potentiometer (min. 500 Ϊ)
DU
OPTION "A"
Type Input I
±0,1 A/±0,25 A/±0,5 A to GND (C)
DC
±2 A/±5 A to GND (B)
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6 INSTRUCTIONS FOR USE OMB 450UNI
Input U
0...60/150/300/1 200 mV
±2/±5/±10/±40 V
Input U
±100 V/±250 V/±500 V to GND (C)