DRUCK & TEMPERATUR Leitenberger GmbH •
Bahnhofstr. 33 • D-72138 Kirchentellinsfurt • GERMANY
Tel. +49 (0) 7121-90920-0 • Fax +49 (0) 7121-90920-99 • [email protected] •
• www.druck-temperatur.de
www.LR-Cal.net
MANUAL
Portable Temperature Calibraon Bath
FLUID 100 and FLUID 100-N
23
NOTE:
The temperature calibrator always uses the internal reference sensor to regulate it‘s temperature.
Possible Error Messages:
• EXT SENSOR FAIL
Wrong connecon or configuraon of the probe connected to „EXT“.
• REF SENSOR FAIL
Wrong connecon or configuraon of the probe connected to „REF“.
• SENSORS FAIL
Wrong connecon or configuraon of both probes.
CAUTION: Never connect voltage >5 V to the measuring inputs (15)!
5.4.2 Switch test
You can test the operang point of thermostats using the „SWITCH TEST“ funcon:
• Put the sensor of the thermostat into the calibrator (dry block or fluid bath) avoiding touching
the bu on. Follow the instrucons in chapter 3.1.7.
• Connect the terminals of the thermostat to the socket (4).
• Switch on the temperature calibrator.
• Set the test temperature upper to the operang temperature of the thermostat.
The LED (7.3) will light on when the thermostat electric contact works.
• The instrument stores the switch test value. Follow the instrucons and the flow chart in
chapter 10.1, up to „SW ON“ - „SW OFF“ to display the stored values.
• Press both arrow-keays together at the same me to reset the values of „SW ON“ and „SW OFF“
• See chapter 10.1 for generaon of a ramp.
CAUTION: Never connect voltage >5V to the switch-test input (4)!
5.4.3 Serial communicaon RS232
For PC control, use the serial communicaon RS232 (5)
interface, see Fig. 7.
With the RS232 interface, you can read and/or change the
operave parameters, for example: set point, external probe,
slope rate, etc.
Refer to the communicaon protocol instrucons in
chapter 10.2.
CAUTION:
The external PC must be conform to the IEC950 standard.
NOTE:
The used RS232 cable must have pin 2 and pin 3 crossed.
RS232 front view
