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Sensor Alignment
RH Sensor Alignment
17
Sensor Alignment
For highly accurate measurement readings, you should align your QUESTempº 44/46 prior to
data logging. For the RH sensor, it is recommended to align with a High concentration level
using the 75% sensor salt, NaCl (sodium chloride), or a Low concentration level using the,
the 33% sensor salt, MgCl (magnesium chloride). (See
ColePalmer.com
to order sensor
alignment salts.)
RH Sensor Alignment
1. To open, navigate to the main menu and select View by pressing I/O Enter key (see A). A
measurement screen will appear (see B).
Figure 1-20: Main menu with view selected (A) & measurement screen (B)
2. Press and hold I/O Enter key and then press Down Arrow key from the View menu.
The Alignment screen will appear.
Figure 1-21: Alignment screen
3. Press Up/Down Arrow key to select either High or Low. Then press I/O Enter key.
4. Remove (or slide) the Sunshield (white globe) from the RH sensor and place it to
the side. (See Figure 1-22.)
5. Place a latex finger cot (user supplied) over the humidity sensor in order for the
sensor to stabilize quicker about 15 minutes (or up to 60 minutes without).
Note: latex
finger cots can be found at various hardware stores or online such as ColePalmer.com.
Figure 1-22: Sunshield & placement of finger cot prior to RH verification
“High” is selected when the arrow appears
in front of the text.
(A)
Sensor alignment
(RH Sensor) Alignment menu
(B)
Note: WBGT is not used in sensor alignment
Sunshield:
Slide off of
RH sensor
to remove.
Place unrolled finger cot,
with a small hole cut in the
top, so it is completely
stretched over the humidity
sensor.