Hanna Instruments hi 931700 User Manual

5

4

1. Power Supply

P1 

!

Not Connected

Earth

P2 

!

Negative

Neutral

P3 

!

Positive

Live

2. Acid/Base Dosage Selection (see page 10);

3. Connections for dosing pump to dose either

acid or base 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 pH 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 931700

pH CONTROLLER

SET

ON

OFFSET

SLOPE

SET

pH

To display and to set the working
point of pH dosage

MEASURE To set HI 931700 to the measure-

ment mode

For Offset Calibration

For Slope Calibration

To adjust the Set Point

To show that acidic or alkaline
dosage is in progress