The Helman Group 1769 WEIGH SCALE MODULE HM1525 - Manual (Page 20)

Chapter
5
System
Trouble-
shooting
Guide
HT-400 Sensor Ohm Readings
Green-Black
350 ohms
Red-White 350 ohms
All other color combinations 266 ohms
All colors to Ground open
Shield to Ground open
Electrical Specifications:
Type of input Strain Gage (350 ohm, 700 ohm)
Input Impedance 10k
Display Resolution Up to .0025% of full scale
Overall Module Accuracy .01% of full scale
Module Update Time 10 µsec
Number of Channels 2 (isolated)
A/D Conversion Method Successive Approximation - 16 bit
Normal Mode Rejection:
(between +/- input) 116DB CMRR
Amplifier Bandwidth 200 kHz
Calibration Software Selectable
Isolation: 500 VDC continuous between inputs
and chassis ground, and between input
and backplane
LED indicators 2 LED's for Power and Alarm
Recommended Cable Strain Gage Cable (Helm part number 6117)
Terminal Strip 16-pin removable
Operating Temperatures 0°C to 60°C (32°F to 140°F)
Hazardous Environment
Classification
Class 1 Division 2 Hazardous Environment
Trim Jumper
Located at Bottom
Left Corner of Module
Black Jumper
Factory Jumper. Removing this
Jumper will cause module to
Become unstable.
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