The Model 1302 Opacity Monitor
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is designed for Opacity applications that require
on-line calibration. A manually operated zero & span optical
device is provided to calibrate the system without shutting down the
process.
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Model 1302OPLC Opacity monitor come standard with
the following features:
- PANEL MOUNT OR DIN RAIL - Compact size 3.78" x3.78"
x2.52" (96x96x64mm)
- DISPLAY - LED Back Light
- COMMUNICATIONS - 2 RS232/485 Ports (selectable)
- MODBUS - Supports Modbus protocol
- MEMORY BACKUP - Battery 7 years typical
- ENVIRONMENT - IP65/NEMA4X
- POWER - 12/24VDC
- OUTPUTS - High opacity with time delay.
- EXPANSION - up to 128 I/Os may be added via I/O
expansion port
- APPROVALS - CE and UL Listed
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A High performance Opacity Monitoring System with
Double-Pass Transmissometer
The stack mounting transmissometer sensor system
consists of an optical transceiver mounted on one side of the stack and
a retroreflector mounted on the other. The main light source is
electronically modulated making it insensitive to ambient light effect
and projects a collimated beam of light which is split into a reference
beam and a measurement beam. The ratio-measurement technique provides
continuous automatic compensation for variations in light source
intensity to ensure prolonged instrument accuracy and stability.
The measurement beam is projected across the stack to a retroreflector
which reflects it back across the stack to the measurement detector.
The output of the measurement and reference detectors are transmitted
to the control room mounted monitoring unit where all output signals
are analyzed. |
Manual On-Line zero and span calibration check
An on-line reflector is supplied with each Model
1302 system. This reflector is calibrated to the clear stack or duct
condition and locked in place and each reflector is serial numbered to
match the system. A slot is provided for the span filter to check the
up scale calibration.
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Swing Away Sensor
The swing away sensor make cleaning the windows a
breeze and for on-line testing. Both sensor have alignment pins to
assure no change in alignment after the sensor have been open and
closed. Large heavy duty latches make for a air and water tight seal.
The sensors are are attached to the air plenum by two drop on pivot
pins. This makes for easy installation and should service ever be
required easy removal, just swing open and lift off the pivot pins.
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Alignment system:
The Model 1302 includes a built-in TTL
(through-the-lens) alignment system. The alignment target can be viewed
through a window on the transceiver. Adjustments to changes in
alignment are provide by a 3 point alignment system which is integral
to the air plenum.
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Options:
- Air Purge
- Weather Covers
- Stack exit correlation
- 0-1000 mg/m³ Display
- 6 minute averager
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