6
95-8556
2.1
SPECIFICATIONS
INPUT VOLTAGE (Both Modules)—
24 Vdc nominal. Operating range is 18 to 30 Vdc.
Ripple cannot exceed 0.5 volts P-P.
POWER CONSUMPTION (Per Module)—
Transmitter
5.0 watts nominal @ 24 Vdc, 6.9 watts @ 30 Vdc.
5.8 watts peak @ 24 Vdc, 7.5 watts peak @ 30 Vdc.
Receiver Without Relays
6.0 watts nominal @ 24 Vdc, 7.6 watts nominal @ 30 Vdc.
Receiver With Relays
6.4 watts nominal @ 24 Vdc, 8.0 watts nominal @ 30 Vdc.
TRANSMITTER LAMPS
Two xenon flashlamps, field-replaceable module.
WARMUP TIME—
1 minute for transmitter. 30 seconds for receiver from
power-up when correctly aligned.
CURRENT OUTPUT—
Linear 4 to 20 mA (isolated/non-isolated) rated at 600
ohms maximum loop resistance @ 24 Vdc operating
voltage.
RELAY OUTPUTS (Optional)—
Available on Ex d approved models only.
ALARM RELAYS—
Low and High
Form C Type (NO/NC). De-Energized during Normal
mode, Energized on Alarm.
Contact Rating: 5 amperes at 30 VDC.
Programmable for Latching or Non-Latching Operation.
Low Alarm:
0.25 to 3 LFL-meters
(default = 1 LFL-meters, Non-latching).
High Alarm:
1 to 3 LFL-meters
(default = 2 LFL-meters, Non-latching).
Alarm relays are programmable using HART or
MODBUS communication.
FAULT RELAY—
Form C Type (NO/NC). Energized during Normal mode,
De-Energized on Fault or loss of power.
Contact Rating: 5 amperes at 30 VDC.
Non-Latching Operation only — not programmable.
VISUAL STATUS INDICATOR—
Tri-color LED – Transmitter:
Green =
Power on / OK
Amber =
“Back-up Lamp” mode or other fault condition.
Tri-color LED – Receiver:
Red =
Low alarm, high alarm, or calibration
Green =
Power on / OK
Amber =
Fault / warmup.
ALARM RELAY SETPOINT RANGE—
Low Alarm:
0.25 to 3 LFL-meters (default = 1)
High Alarm:
1 to 3 LFL-meters (default = 2).
Alarm setpoint is programmable using HART or
MODBUS communication.
DETECTION RANGE—
Standard Range Model: 5 to 60 meters;
Long Range Model:
60 to 120 meters.
CALIBRATION—
OPECL systems are span calibrated for methane at the
factory.
Zero calibration is accomplished in the field by one of
three methods:
– On-board magnetic reed switch
– MODBUS communication
– HART communication.
Span calibration is not required. It can, however, be
adjusted for special situations using HART or MODBUS
communication.
Refer to the “Calibration” section of this manual for
details.
RESPONSE TIME—
T90:
<5 seconds.
TEMPERATURE RANGE—
Operating: –40°C to +60°C (–40°F to +140°F).
Storage:
–55°C to +85°C (–67°F to +185°F).
HUMIDITY—
5 to 99% relative humidity; designed for outdoor
applications.
OPERATING PRESSURE—
91.5 - 105.5 kPA non-compensated.
