JENCO VisionPlus pH 618 Operation Manual Download Page 9

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2. By pressing the “SCROLL” key, previous saved data will

appear.

3. Press “STORE” key for 2 seconds to exit and return to

“Measure Mode”.

ONGOING MAINTENANCE

A. Replace Electrode

1. Unscrew the electrode collar

to remove the electrode &
ATC assembly as shown in
the right figure.

2. Remove the old electrode

from the electrode collar.

3. Insert a new electrode, make

sure the electrode fit back into
the meter correctly.

4. Screw back the electrode collar.

B. Replace Calendar Battery

1. Unscrew the electrode & ATC

assembly as shown in the right
figure.

2. Remove the two screws at the

lower part of the unit before
detaching the upper part of the
unit from the case as shown in
the right figure.

Remove the old battery and
insert a new battery ensuring
that the polarity is correct.

Note:

In normal usage, the battery should last for more than 5

years.

Summary of Contents for VisionPlus pH 618

Page 1: ...pH618 Operation Manual MODEL pH 618 Microcomputer Based pH Temperature Pocket Meter...

Page 2: ...3 B VisionPlus Graphical Display 3 OPERATION MODES AND KEYPAD OPERATIONS 4 A Operation Modes 4 B Keypad Operations 4 USING VISIONPLUS pH 618 5 A Power ON OFF 5 B Set Date and Time 5 C Select Buffer 6...

Page 3: ...ure and gently take off the cover A small screwdriver is provided to easily remove the screws 2 Remove all of the old batteries and insert a new set of batteries ensuring the polarities are correct B...

Page 4: ...Electrode collar 5 Electrode ATC assembly Electrode cap is not shown B VisionPlus Graphical Display 1 DATE MM DD YY 2 HOLD mode indicator 3 MEASURE mode indicator 4 CALIBRATION buffer s 5 TIME HH MM...

Page 5: ...e Set Mode is used to change date and time 6 Buffer Select Mode Buffer Select Mode is used to select the buffer set which can either be 7 00 7 00 4 01 10 01 or 6 86 6 86 4 00 9 18 B Keypad Operations...

Page 6: ...nd Time Set 0 second Decreases current number SCROLL Buffer Select 0 second Selects new buffer set USING VISIONPLUS pH 618 A Power ON OFF Press HOLD key for 2 seconds or more The unit will turn on and...

Page 7: ...pH meter will perform end point sensing to determine when the calibration reading is stable Meter is calibrated when WAIT icon disappears and the unit will automatically enter the next point calibrat...

Page 8: ...d Mode or the Measure Mode press STORE key for 2 3 seconds The DATA SAVE and M XX icons will appear indicating the reading has been saved and stored in memory location XX The unit will automatically r...

Page 9: ...collar 3 Insert a new electrode make sure the electrode fit back into the meter correctly 4 Screw back the electrode collar B Replace Calendar Battery 1 Unscrew the electrode ATC assembly as shown in...

Page 10: ...er 0 00 to14 00pH range Over Range or Recalibrate OVER 0 0 60 0 C pH CAL a pH STAND b pH SLOPE a Offset 7 00pH mV 90mV Offset 6 86pH mV 98 3mV b New slope ideal slope by 30 Use a new buffer solution R...

Page 11: ...ode Slope recognition 30 at pH 4 00 4 01 9 18 and 10 01 Input impedance 1012 Temperature Temperature sensor Thermistor 10 k at 25 C Temperature unit Default in factory General Power Meter LR44 x 4 Tim...

Page 12: ...ng the reason for return For your protection items must be carefully packed to prevent damage in shipment and insured against possible damage or loss Jenco will not be responsible for damage resulting...