Hanna Instruments HI 9912, Instruction Manual

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This type of connection is very delicate and requires constant attention
to maintain proper operating conditions.
The conventional electrodes may be used for indoor applications but
the cable length should not exceed 10 m (33').

MEDIUM DISTANCE, INDOOR/OUTDOOR INSTALLATION

When an outdoor installation is required, it is normally necessary to
install a transmitter to obtain accurate readings at distances from 10
to 50 m (33-165').
Since the introduction of AmpHel

electrodes these distances are no

longer a problem. You can now  connect your meter directly to an
AmpHel electrode, saving the cost of a transmitter.
The standard cable length of the AmpHel electrode is 5 m (16.5').
Additional lengths of regular cable up to 50 m (165'), can be
installed without special connectors. It is recommended to use coaxial
cables due to their excellent insulation, even though, Amphel elec-
trodes can operate with both.
AmpHel electrodes have a micro-amplifier in the electrode cap to boost
the signal, drastically reducing susceptibility to noise and drift.
For more details about these or other specially made electrodes,
consult the Hanna process and water treatment literature, or call the
Hanna Office nearest to you.

ACCESSORIES

ACCESSORIES

ACCESSORIES

ACCESSORIES

ACCESSORIES

pH ELECTRODES

HI 1002/3

Double Teflon junction with external threads

HI 1003/3

Double Teflon junction with matching pin

HI 2911B/5

Preamplified, double Teflon junction

ORP (Pt) ELECTRODES

HI 2002/3

Double Teflon junction with external threads

HI 2003/3

Double Teflon junction with matching pin

HI 2931B/5

Preamplified, double Teflon junction

ORP (AU) ELECTRODES

HI 2012/3

Double Teflon junction with external threads

HI 2013/3

Double Teflon junction with matching pin

Hanna manufactures hundreds of pH and ORP electrodes for a wide
variety of process and water treatment applications. Consult the