GE Moisture monitor series 3, Programming Manual

Page: 58 / 99

March 2008
3-30 Advanced Programming
Using Computer
Enhanced Response
Computer Enhanced Response uses a dynamic moisture calibration
technique to extrapolate the moisture level to the end point when
making measurements in abrupt “dry down” conditions. The system
response time depends on the relative change in dew point. For a
change from ambient moisture levels to trace levels, the unit can
respond in three to five minutes.
The accuracy of Computer Enhanced Response is ±2°C of the reading
the sensor would have read if it were allowed to reach equilibrium
with the gas. To ensure that Computer Enhanced Response is as
accurate as possible, your applications should:
•
have a reasonably constant flow rate and final dew point.
•
have a minimum flow rate of one standard cubic foot per hour
(SCFH).
•
operate at atmospheric pressure (0 psig).
•
have an actual moisture content dew/frost point or wetter of -85°C.
Allow the sensor to reach equilibrium at ambient moisture levels
before being exposed to the dry gas. Exposing the sensor to dew
points of 5° to 10°C for ten minutes will enable the sensor to reach
equilibrium.
P
ress the
[PROG]
key to enter the user program.
Note:
If you have already entered the user program, refer to Figure
3-2 on page 3-48 to navigate to the User Menu.
Be sure the number displayed in the upper right-hand corner of the
screen is the channel you want to program. If not, press the
[CHAN]
key to select the desired channel.
Enter Passcode: XXXX
Enter the passcode
.
Programming Menu 1
Use the arrow keys to move the
brackets to
USER
and press
[YES]
.
_
[USER] LOGGER
`
User Menu 1 Use the arrow keys to move the
brackets to
ENHANCED
and
press
[YES]
.
_
[ENHANCED]