Sper Scientific 840052 Data Acquisition Software - Manual (Page 5)

EASY OPERATION:
Diagram A shows when you enter the program and before
connecting with any Hand Held meters. While there is no meter
connected, the reading in two blocks showed without title.
3
Take Psychrometer (Dual K Type Input) as example
While linking with your personal computer , you will see "Air" and
"RH" displayed. (See Diagram B)
Left Side :Display AIR Temperature
Right Side :
Display RH (Humidity Value)
Diagram A