1072_B
16
June 2020
Hygrometer is slow to respond
Possible Cause
Corrective Action
Inadequate sampling suction
With hygrometer on, use finger to block
sample tubing. If you don’t feel suction,
the vacuum pump may be worn or
damaged, or the 3 pin sensor insert
holding the sensor may be cracked and
leaking. Hygrometer should be serviced.
Sensor worn or contaminated
Using a fresh desiccant tube, perform the
Dry Down test. If response is slow, replace
sensor.
Sample tubing or air filter is
dirty
Inspect sample tubing and air filter and
replace if loaded with resin dust.
