Specifications

PROPRIETARY DATA: This document contains proprietary data of ABB Inc. No disclosure, distribution (electronic or otherwise),
or other means of dissemination may be made without written permission.
3BUS 208 000 R1301 143Measurement Setup
IR Moisture Sensor
Table 6-24 Range for IR Sensor Standardize Limits
Host Computer
Reporting Name
Variable Name
In IR Health
Report
Description Acceptable Range
AAIR AAIR Standardize air gap reading
for the absorption signal on
transmission–type sensors.
6.5 VDC ± 2.5
RAIR RAIR Standardize air gap reading
for the reference signal on
transmission–type sensors.
6.5 VDC ± 2.5
AFLAG AFLAG Standardize flag reading for
the absorption signal on
reflection–type sensors.
5.7 ± 0.7
RFLAG RFLAG Standardize flag reading for
the reference signal on
reflection–type sensors.
5.7 ± 0.7 VDC
KC KC Standardize ratio
A/R
1.0 ± 0.2
KC should not drift more
than 0.01 units from
standardize to standardize;
drift could indicate dirt or
condensation on the
windows.
SIGMIR SIGMIR This is one standard
deviation of noise. It is
reported in percent of noise
of the A/R ratio.
0.00005 ± 0.00005
Values outside of this range
indicates head or cabling
problems.
IRGAIN IRGAIN Preamp gain required to
achieve the RAIR reading;
applies only to
transmission–type sensors
HemiPlus and Lt Hemi -
4
± 3
Hvy Hemi - 11
± 3
If the gain changes, it is an
indication of dirt buildup,
changes in the chiller,
problems with the detector,
or lamp problems.