AQ EXPERT Instruction & Operations Manual
Version 1.13
Page 20 of 63
The PID options have the following specifications:
GAS
RANGE
ACCURACY
VOCs*
0
– 20 ppm
+ 10 % of reading
VOCs*
0
– 200 ppm
+ 10 % of reading
*VOC sensor will not measure Formaldehyde. The ionization potential of the sensor is outside of the VOC sensor
range. If you need Formaldehyde, you need to use the direct CH2O sensor.
4. NON-GAS SENSORS
A. Ambient Temperature sensor
This is a solid state sensor located on the front panel of the monitor. The
ambient temperature is displayed on the
MEASURE
screen in either °F or °C.
The dew point is calculated from the ambient temperature and relative humidity.
The dew point is displayed on the Small and Large Font
MEASURE
screens as
DPt.
B. Humidity sensor
This is a solid state sensor located on the front panel of the monitor. The
relative humidity is displayed on the
MEASURE
screen in %RH (% Relative
Humidity). The Wet Bulb is calculated from the ambient temperature, relative
humidity, and barometric pressure. The wet bulb is displayed on the Large
Font
MEASURE
screen only as WBT.
C. Barometric Pressure sensor
This is a solid state sensor located at the front panel of the monitor. The
barometric pressure is displayed on the Small and Large Font
MEASURE
screens as BP.
D. External Temperature Sensor (T1 & T2)
The thermocouple is located at the tip of any optional or separate Type K
thermocouple probe and/or wire. The T1 & T2 temperature measurements are
displayed on the Large Font
MEASURE
screen only as T1, T2.
E. Differential Pressure / Air Velocity sensor.
If the monitor comes with the Differential Pressure option and/or the air velocity
option (optional separate S-type pitot tube and pressure tubing), the internal
pressure sensor is a very low range pressure sensor. The Velocity
