TELEDYNE OLDHAM SIMTRONICS OLCT 80 d, Руководство пользователя

Страница: 98 / 116

OLCT 80
GAS TRANSMITTER
USER MANUAL
92 NPO80GB
Revision F.1
13.2 Metrological characteristics
13.2.1 Complete detector
Function: Transmitter with 1-3 sensors.
Gas detected, detection method
and measurement range: Depends on the sensor pack connected. See the section on Sensors .
Display:
•
4-digit backlit LCD screen.
•
Displays reading, gas type, unit, faults and menus.
•
Green indicator light: power.
•
Red indicator light: fault or maintenance.
•
Red indicator lights (2): alarm #1 or alarm #2.
Alarms:
•
2 independent alarm levels per channel.
•
Fault alarm.
•
Relays: 3 independent relays (alarm #1, alarm #2, fault). RCT dry
contact output. Interrupting capacity: 30 VDC - 250 VAC – 2A.
Local sensor pack:
•
Precalibrated.
•
Either catalytic, electrochemical, infrared (IR) or semiconductor-type.
Power supply at detector
terminals:
•
16-28 VDC (catalytic, infrared and semiconductor sensors).
•
12-30 VDC (electrochemical sensors).
Average power consumption by
sensor pack type:
•
Catalytic: 140 mA.
•
Electrochemical: 80 mA.
•
XPIR infrared: 120 mA.
Max. power :
With digital link
•
0.2 W (electrochemical sensor).
•
1.3 W (catalytic or semiconductor sensor).
•
5.3 W (infrared sensor).
With 25 mA output current
•
0.9 W (electrochemical sensor).
•
2 W (catalytic or semiconductor sensor).
•
6 W (infrared sensor).
With 25 mA output current and relays activated
•
2.4 W (electrochemical sensor).
•
3.5 W (catalytic or semiconductor sensor).
•
7.5 W (infrared sensor).
Input current (signal):
•
2 independent 4-20 mA inputs.
•
120 Ω load resistance.
Output current (signal):
•
Source of coded current from 0-25 mA (non-isolated).
•
Linear 4-20 mA current reserved for reading.
•
Electronic fault or power failure: 0 mA.
•
Fault: <1 mA.
•
Maintenance mode: 2 mA.
•
Out of range: current greater than 23 mA.
•
Verification: 23 mA.
Maximum load resistance (4-20
mA output):
500 Ω.