Veris Technologies MSP EC and pH (1997-2008 floppy disk drive 1.02E) - Operating Instructions - Manual (Page 33)

Veris Technologies
Pub. #OM MSP03-1
33
7. Prox sensor: The prox sensor communicates the position of the sampler assembly to the
external controller for automatic cycling functions. Adjust sensor to 1/4”- 3/8” (6-9 mm) gap.
Cycle unit manually to insure that this gap is maintained throughout cycling range. Red LED
light should light whenever prox sensor is near metal and not light when away from metal. To
view LED light, shade ambient light from prox sensor and cycle sampler assembly manually.
Be careful to not strike or damage prox sensor face. Adjust prox sensor height with sampler
shoe completely raised. Adjust the prox sensor so it barely clears the lower part of the sensor
plate when sampler is completely raised. It may be necessary to reposition the electrode
holder after adjusting prox sensor; see step 2 above.
Installing electrodes
pH Electrode Calibration Procedure: perform daily
1.
Thoroughly wash the electrodes and electrode holder; wash for 30-60 seconds before
calibrating and between each solution.
2. Wipe the electrode holder dry; gently dry the electrode holder face and electrodes with a paper
towel. Do not touch the face or dome of the electrode.
3. Turn on the Veris Instrument.
4. Enter menu option 2) pH Setup:
5. Enter menu option 1) Calibrate ISE’s:
6.
Enter menu option 1) Continue with calibration.
Light is on as metal
passes by sensor
Light is off
when sensor
is above and
below plate,
and over
center gap
Prox Sensor light
1/4 to 3/8” gap
(6-9 mm)