LI-COR LI-7500, Instruction Manual

Page: 52 / 155

Section 3
Setup and Operation 3-23
Y
Slope = A
B
0 V
Figure 3-3. Response curve for external pressure or temperature sensors.
Use the temperature and pressure radio buttons to select the method for measuring these
values. If you are using the auxiliary input, enter the values for the multipler (A) and offset
(B). If you have updated user-entered values, you need to send them to the LI-7500 for
implementation using the
Update Selected
button. Click on
Cancel All
to restore any edited
values in this page to their original state.
Using Auxiliary Inputs
The LI-7500 has two auxiliary input channels that can be used to attach either an external
temperature or pressure sensor. Only one active external sensor can be attached and active at
a time. The LI7500 software (Inputs Tab) assumes selection of either the internal on-board
sensors, selection of one externally measured sensor in combination with one on-board sensor
or manually entered values of temperature and or pressure with one of these other options.