User Guide

2
The transmitters use a universal BNC socket
for quick and secure connection to any elec-
trode with a BNC connector.
For HI8614 - HI8614L: temperature com-
pensation is performed by the transmitter's
ATC circuitry when measurements are taken
with the temperature probe attached
(HI76608, optional); it is also possible to
substitute the temperature probe with a fixed
resistor if ATC is not required.
The input is isolated from the current loop
to eliminate problems related to ground loop,
low insulation cables, multiple electrode con-
nections, and a common mode voltage of
up to 100V ensures true differential read-
ings.
A terminal board in the transmitter provides
for connection of power supply, pH or ORP
electrodes (and temperature probe for
HI8614 & HI8614L).
The unit is enclosed in a protective casing
conforming to IP65 standards.