The Helman Group HM1525 Manuel d'utilisateur télécharger pdf (Page 20)

Chapter

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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The Helman Group HM1525 Manuel d'utilisateur Page 20