Martel Electronics 320 - Manual (Page 26)

Select “2” if the pressure input to the pneumatic
transmitter is being measured on the right port of the
Model 320.
After the percent function setup is completed, the
function is activated by pressing the % key.
4 = H
2
Oref (H
2
O Reference Temperature)
The H
2
O Reference refers to the temperature
correction for inches and centimeters of water
measurements. There are three choices: 20
°
C, (ISA
Standard); 4
°
C, (Scientific Standard); and 60
°
F,
(American Gas Association Standard). Press the
number for the desired temperature correction.
5 = Owner (Change Owner’s Name)
The Model 320 calibrator contains a security feature
that allows the owner to enter a name or other
24
1 = 20C 2 = 4C
3 = 60F