56
Recalibrate Humidity Sensor (Quarterly)
The RH Sensor in the CApture BT Fuming Chamber is pre-calibrated at the factory to
display the relative humidity inside the chamber. The relative humidity percentage
displayed on the screen during a Humidify Stage is accurate /-5%.
At least annually, or if the accuracy of the relative humidity displayed on screen is in
doubt, follow the procedure below to verify or re-calibrate the RH Sensor:
1. Obtain a calibrated hygrometer, and place it inside the CApture BT Fuming
Chamber. Make sure the hygrometer is properly calibrated and displaying
correct relative humidity when placed in the chamber.
For user convenience, an inexpensive digital hygrometer (P/N 3194300) is
included in the parts box of the CApture BT Fuming Chamber. This hygrometer
is to be used if access to a calibrated hygrometer is not immediately available.
2. Place the calibrated hygrometer as close to the center of the chamber as
possible, and turn it on. Close the Main Door.
3. At the
MAIN
menu, select
RUN
and press
[OK]
. On the
RUN
menu, select
HUMIDIFY
and press
[OK]
. Set the
Humidity Set Pt.
to
80%
. Set the
RH Dwell
to
1:00
. Press
[START]
. Note
– if chamber is not reaching 80% relative
humidity in a reasonable time, use a lower
Humidity Set Pt.
(70% or even 60%).
4. Once the Humidify Program completes, open main door only slightly then close
it. Return to the
MAIN
Menu screen, select
SERVICE
and press
[OK]
. Enter the
Service Password:
[UP] [DOWN] [LEFT] [RIGHT] [OK]
.
Select
RH SENSOR
on
the
SERVICE
Menu and press
[OK]
. The following screen will be displayed (Fig.
7-7).
5.
Wait for 3 minutes
to allow the RH Reading to stabilize. Compare the
Display
RH Reading
to the reading from the hygrometer inside the chamber. Use
[UP]
or
[DOWN]
buttons until the Reading matches the hygrometer reading. Press
[OK]
.
Figure 7-7
PRESS ‘UP’
OR ‘DOWN’
TO ADJUST
NOTE!
DISPLAY READING
CAN ONLY BE ADJUSTED
+20%/-10% FROM RAW
READING
Summary of Contents for Capture BT 31700-00
Page 2: ...2 CAptureTM BT Fuming Chamber 2020 Present 3170000 3170001 3170002 3170003 3170004 3170005...
Page 55: ...55 Figure 7 6...
Page 81: ...81 Wiring Diagrams 100 120V...
Page 82: ...82 208 230V...
Page 87: ...87 Chamber will not achieve humidity...
Page 88: ...88 Chamber does not exhaust CA fumes...
Page 89: ...89 Door alarm active when door s closed...
Page 90: ...90 Hot Plate will not achieve temperature set point...
Page 91: ...91 White CA residue builds on inside of Chamber...
