The Helman Group 1769 WEIGH SCALE MODULE HM1525 User 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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