User Guide

31
• Ensure that there is no solution inside the HI7635 conductivity
probe (dry probe).
• When the power is on, the ammeter should read "4.0 mA". The
HI8936L transmitter with LCD should display "0".
• If not, adjust the OFFSET trimmer
of the HI8936 transmitter to ob-
tain "4 mA" or "0" on the
HI8936L.
• The HI 8931 controller should dis-
play "0" value.
• If not, adjust the OFFSET trimmer
of HI8931 to display a zero read-
ing.
• Switch the flow on and allow the
sample solution to flow through
the HI7635 conductivity probe.
Collect a sample of this solution in
a beaker.
• Measure the conductivity of the
solution with the HI8733 por-
table conductivity meter with ATC.
The value obtained will be used
for the transmitter and controller
calibration.
ins
rum n
s
ON
OFF
HI 8733
199.9
mS
19.99
mS
1999
µS
199.9
µS
2.5
2
1.51
0.5
0
TEMPERATURE COEFFICIENT
µS
°C