Hanna Instruments hi 931700 User Manual

7

6

1. Power Supply

P1 

!

Not Connected

Earth

P2 

!

Negative

Neutral

P3 

!

Positive

Live

2. Oxidant/Reductant dosage selection (see

page 10);

3. Connections for dosing pump to dose ei-

ther oxidant or reductant products. These
contacts act only as a switch for the power
to the drive;

4. Recorder output (M1 

!

 + mA output,

 M2 

!

 - mA output);

5. BNC for ORP electrode;

6. Connection for Potential Matching Pin;

7. Connection for Electrode Reference.

Note: Be sure your main line is protected by

a fuse.

SET

MEA

HI 932700

ORP CONTROLLER

SET

ON

SLOPE

SET

To display and to set the working
point of ORP dosage

MEASURE To set HI 932700 to the measure-

ment mode

For Slope Calibration

To adjust the Set Point

To show that oxidant or reduc-
tant dosage is in progress