Vaisala HMP260 - Manual (Page 74)

HMP260 SERIES
HMP260-U017en-1.5 Appendix 1: Serial commands
LI Entering linear correction coefficients
Disconnect the security lock jumper!
LI <cr>
The LI command is one way of calibrating the transmitters.
LI <cr>
RH offset : 0.000 ? -.6 <cr>
RH gain : 1.000 ? <cr>
T offset : 0.000 ? <cr>
T gain : 1.000 ? .4 <cr>
The factory settings are offset 0 and gain 1. The transmitter can be returned to its
factory calibration by giving these values.
NOTE
The temperature unit in offset correction is always degrees
Centigrade, even if the transmitter is using non-metric units
(Fahrenheit) in its measurement output.