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Operating QUESTempº 44/46
Setup for Waterless Wetbulb measurement (airflow rate)
11
• Index: none, ACGIH, Navy, Marine, EPRI and select either: WBGTi (indoor),
WBGTo (outdoor) for Index setting.
Index Setting Notes
• TLV and action limit only apply to the ACGIH Index. EPRI Navy, and Marine
will ignore this setting.
• Clothing Correction parameters are set from 0 - 9.9°C. This is a clothing
correction for the WBGT in degrees Celsius and is applied to the selected
WBGT when the work duration is calculated. (It will not affect the WBGT as
displayed by the unit.) This value should typically be set to 0.0 for the Navy.
(The field is noted as “Clo Corr”.)
3. Press the I/O Enter key to change a parameter. Time and date require using the
Up/Down Arrows and I/O Enter keys to modify each number.
NOTE: at any time, you can move back one level, by pressing the Run/Stop
key.
4. Exit Setup by pressing the Run/Stop key.
Setup for Waterless Wetbulb measurement (airflow rate)
For the Waterless Wetbulb sensor calculation, an airflow rate (or wind
speed) of 0.3 m/s is recommended and is the default setting of the
instrument.
NOTE: only QT
º
46 supports the optional air-probe accessory.
If an air probe is not selected, the average wind speed of the environment
should be configured. This value is then entered into the Flow screen
under the setup menu.
Figure 1-7 Setting the airflow for Waterless Wetbulb sensor
To Setup Airflow rate
1. In the setup menu, select Flow by pressing the Up/Down Arrow key to select.
2. Press I/O Enter key and press Up/Down Arrow key to change the values. The
I/O Enter key is pressed to toggle through the changeable fields and to return
to the first column.
Flow Off
Flow 00.3 m/s
Airflow rate
The selected value will be underlined.
Press the Up/Down arrow key to change.
Press I/O Enter key to select a value
position.