Maintenance - Omega Engineering CN3271 Series User Manual

Band alarm Band alarm Band alarm Band alarm Band alarm
Operative mode: Inside or outside band Operative mode Operative mode
Operative mode Operative mode
programmable.
Threshold: programmable from 0 to 500 units. Threshold Threshold Threshold Threshold
Hysteresis Hysteresis
Hysteresis Hysteresis Hysteresis : programmable from 0.1 % to 10.0 % of
the readout span.
Deviation alarm Deviation alarm Deviation alarm Deviation alarm Deviation alarm
Operative mode : High or low programmable. Operative mode Operative mode Operative mode Operative mode
Threshold Threshold
Threshold Threshold : programmable from - 500 to +500 Threshold
units.
Hysteresis : programmable from 0.1 % to 10.0 % of Hysteresis Hysteresis Hysteresis Hysteresis
the readout span.
SERIAL COMMUNICATION INTERFACE SERIAL COMMUNICATION INTERFACE SERIAL COMMUNICATION INTERFACE SERIAL COMMUNICATION INTERFACE SERIAL COMMUNICATION INTERFACE
(OPTION) (OPTION) (OPTION) (OPTION) (OPTION)
Type: insulated RS-485. Type Type
Type Type
Protocol type Protocol type: MODBUS or JBUS. Protocol type Protocol type Protocol type
Baud rate Baud rate Baud rate Baud rate Baud rate: programmable from 600 to 19200
BAUD.
Byte format Byte format Byte format: 8 bit. Byte format Byte format
Parity: even, odd or none programmable. Parity Parity
Parity Parity
Stop bit Stop bit Stop bit Stop bit: one. Stop bit
Address: from 1 to 255. Address Address Address Address
Output voltage levels Output voltage levels Output voltage levels Output voltage levels Output voltage levels: according to EIA
standard.
LHL-1-NEUTRO.pmd 24

MAINTENANCE

MAINTENANCE MAINTENANCE MAINTENANCE MAINTENANCE
1) REMOVE POWER FROM THE POWER
SUPPLY TERMINALS AND FROM RELAY
OUTPUT TERMINALS
2) Remove the instrument from case.
3) Using a vacuum cleaner or a compressed air
jet (max. 3 kg/cm ) remove all deposit of dust
2
and dirt which may be present on the louvers
and on the internal circuits trying to be careful
for not damage the electronic components.
4) To clean external plastic or rubber parts use
only a cloth moistened with:
- Ethyl Alcohol (pure or denatured) [C
- Isopropil Alcohol (pure or denatured)
[(CH ) CHOH] or
3 2
- Water (H O)
2
5) Verify that there are no loose terminals.
6) Before re-inserting the instrument in its case,
be sure that it is perfectly dry.
7) re-insert the instrument and turn it ON.
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19/04/2004, 15.07
H OH] or
2 5