AM8040 Precision Thermometer User’s Guide
Rev. 202206V1
8/40
4.3
Instrument front panel display and touchpad
After power is on and a sensor is connected, AM8040 shows some
initialization information, and then displays information including
the instrument’s interface status, measured temperature in Celsius
degree, the sensor resistance and temperature in Fahrenheit degree.
These are shown in 4 lines as in the following figure:
Udr ZB-xx USB
+130.734
t= IPRT
C
Rt= 150.1074
ohm
t= +267.321
F
Line 1
Line 2
Line 3
Line 4
There is a status sign which blinks at the upper left corner of the
LCD display functioning as a status indicator. The status sign blinks
when the device is powered on.
Line 1 is the instrument’s interface status, including USB flash drive,
wireless communication status and USB to computer interface status.
If “Udr” is displayed, it means that a flash drive is connected to the
Host USB interface; if “ZB-xx” is displayed, where “xx” are
numbers, it means Zigbee wireless data capturing is working; if the
display shows “USB” on the top line, it informs the user that
AM8040 is connected to a computer’s USB interface.
The “t=” at Line 2 shows the measured temperature of the sensor.
The “IPRT” at the end of Line 2 tells the type of sensor. AM8040
supports two types of sensors. “SPRT” indicates a 25Ω or 100Ω
standard platinum resistance thermometer with α=0.003925. “IPRT”