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Instruction Manual
IM-105-4000, Original Issue
August 2005
6-1
OPM 4000
Section 6 On Line Zero Reflector Option
Using the On Line Zero Reflector . . . . . . . . . . . . . . . . . . . page 6-1
USING THE ON LINE
ZERO REFLECTOR
The Micro-turn 200 on-line test and audit system may be used for:
• Opacity audit
• Linearity checks and adjustments
• System accuracy verification
• Service on-line or off-stack
The Micro-turn 200 on-line test and audit system contains a test reflector,
three neutral density filters, filter certification certificates and carrying case.
The Micro-turn 200 on-line test reflector is inserted over the transceiver lens.
Procedure
The Micro-turn 200 (Figure 6-1) on-line test reflector is inserted over the
transceiver lens. The filters provided are marked in single-pass opacity, this is
the same as double-pass with a correlation factor (OPLR) of 0.50.
1. Hold the Micro-turn in a position so as to see the reflector. Turn the fine
adjustment (large knob) in a direction, which will open the iris to expose
more of the reflector. This direction will cause the monitor to lower
opacity and by turning in the opposite direction, closing the iris, will raise
the opacity.
Figure 6-1. Micro-Turn 200
2. Loosen clamps on the transceiver and swing it open and clean the lens.
Use alcohol with a clean lint free paper and leave no film on the lens.
3. Place the Micro-turn 200 with the reflector facing toward the
transmissometer (away from the stack) on the two alignment pins and
screw the device to the transceiver with the mounting screw.
Fine Adjustment
(Large Knob)
Mounting Screw
Reflector Plate