Sm-Therm; Introduction; Specifications - PEP Modular Computers Modular Computers RS485 User Manual

Chapter 5 Analog Modules

5.3 SM-THERM

5.3.1 Introduction

The SM-THERM supports up to four groups of thermoelement sensors
together with a cold junction (ext. PT100) for accurate temperature measure-
ment. The sensor types shown in the table below may be connected with
corrective calibration for all sensor classes being provided by driver software
running under OS-9. A fast 16-bit delta-sigma A/D converter ensures an
absolute accuracy of 0.2 C.

5.3.2 Specifications

Isolation
Input
EEPROM
Front Panel
Power Cons.
Temperature Range Standard (0 C to +70 C), Extended (-40 C to +85 C)
Module Weight
ID Byte
Sensor Category Temperature
R
S
B
J
March 12, 1996
1.0 kV Optoisolated from the system
4 Thermocouple groups
1 PT100 for Cold Junction (2-wire)
Open Sensor Detection
Self Calibration
Overvoltage Protection
Temperature Range
Temperature Drift
Conversion Time
Input Impedance
Resolution
Absolute Accuracy
Linearization
256-bit serial EEPROM for Calibration Data
2 Red LEDs
350mW (min.), 450mW (max.)
40g
$61, read by the SPI Interface
Temperature
(Low Range) (High Range)
-50 C 1760 C
-50 C 1760 C
0 C 1820 C
-210 C 1200 C
©1996 PEP Modular Computers GmbH
SMART I/O User's Manual
: 25V (power connected)
: 35V (power disconnected)
: Refer to table below
: 1 LSB/ C (not compensated)
: typ. 125 ms, max. 500 ms
(depends on filter settings)
: 10 M (min)
: 16-bit
: 0.2 C (sensor errors excluded)
: by software
Sensor Category Temperature
(Low Range)
T -270 C
E -270 C
K -270 C
Temperature
(High Range)
400 C
1000 C
1370 C
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