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14
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number of bars is increased when you turn the screw coun-
terclockwise.) The optical bridge has now been balanced.
Figure 6 — 1111H Sensor Balance Adjustment Screw Location
6. Place the
HEAT
7.
Run the instrument through another Pacer cycle. (Momen-
tarily press the
The letter "
P
" will light, and the displays will be frozen for sev-
eral minutes as the cycle proceeds. At the end of that time,
the "
P
" will go out, and the left-hand displays will read the
actual percent R.H. and temperature in the test chamber.
8. Use the
SETPOINT
upper or lower side of the switch as required.
The display will scroll, one decade at a time, to the desired
reading. Release the switch when that point is reached.
9. Run the chamber for at least one hour, until the water sur-
rounding the chamber assumes ambient laboratory tempera-
ture and the temperature equilibrates to ±0.2°C or better.
10. Use the
SETPOINT
45 minutes for the chamber to dry down.
switch back in the
INIT
iate switch.)
switch to select 30% RH by pressing on the
switch to select 00.0 %RH and allow 30 to
Chapter 1 — Installation and Initial Setup
OPERATE
position.
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Table of Contents
Troubleshooting
