JENCO VisionPlus pH630FA Manuel utilisateur

Operation Manual

MODEL pH630FA

Microcomputer Based

pH&Temperature

Pocket Meter

pH630FA

CONTENTS

INITIAL INSPECTION AND ASSEMBLY .....................2

BEFORE YOUR FIRST USE ..........................…………2

A. Replace the Batteries ............................................2

B. Soak the Electrode.................................................2

C. Setup and Calibrate the Electrode and Meter............2

VISIONPLUS pH630FA OVERVIEW............................3

A. Meter Description...................................................3

B. LCD Display ..........................................................3

OPERATION MODES AND KEYPAD OPERATIONS...4

A. Operation Modes......................................................4

B. Keypad Operations................................................4

USING VISIONPLUS pH630FA....................................5

A. Power on/off .........................................................5

B. Select Buffer.........................................................5

C. Calibrate pH..........................................................5

D. Measure ...............................................................6

E. Hold Data .............................................................6

REPLACE ELECTRODE…...........................................7

ERROR DISPLAYS AND TROUBLESHOOTING ….....8

SPECIFICATIONS ........................................................9

WARRANTY ...............................................................10

INITIAL INSPECTION AND ASSEMBLY

Carefully unpack the instrument and accessories. Inspect for

damages made in shipment. If any damage is found, notify your

Jenco representative immediately. All packing materials should

be saved until satisfactory operation is confirmed.

BEFORE YOUR FIRST USE

A. Replacing the Batteries

Replace the battery when the blinking

low battery indicator “ ” appears

on the upper left corner of the LCD

screen. The instrument can operate

within specifications for approximately

2 to 3 hours after low battery indicator

appears.

1. Shown in the right figure.

2. Take off the battery cover.

3. Remove all of the old

batteries and insert a new set

of batteries ensuring the

polarities are correct.

B. Soak the Electrode

1. Remove the electrode cap covering the VisionPlus

pH630FA meter.

2. Soak the electrode in a 4 pH buffer solution for 10

minutes before first use or after storage.

C. Setup and Calibrate the Electrode and Meter

VisionPlus pH630FA must be setup and calibrated before your

first use. Please follow the instructions detailed in section

USING VISIONPLUS pH630FA 6.

VISIONPLUS pH630FA OVERVIEW

A. Meter Description

1. Battery cap

2. LCD screen

3. Keypad

4. Electrode collar

5. Electrode & ATC assembly

(Electrode cap is not shown.)

B. LCD Display

1. Calibration buffer(s) and number of calibration point

2. Low battery indicator

3. Calibration mode indicator

4. HOLD mode indicator

5. pH reading

6. Temperature reading

Hold

Cal Enter

PT-70



Germany

HOLD

CAL

6.86 4.00 9.18 7.00 4.01 10.01

OPERATION MODES AND KEYPAD OPERATIONS

A. Operation Modes

VisionPlus pH630FA meter has 4 operation modes:

1. Measure Mode. Measure Mode is used to make all pH

and temperature measurements.

2. Calibration Mode. Calibration Mode is used to perform

1, 2 or 3 point calibration.

3. Hold Mode. Hold Mode is used to display held measured

values for increased ease of use.

4. 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

pH) or 6.86(6.86/4.00/9.18 pH).

B. Keypad Operations

Key

Operation

Mode

Duration

Function

Hold

Measure

0 second

Holds current

measurement reading.

Press again to resume

measuring.

Hold

0 second

Returns to Measure Mode.

Calibration

0 second

Leaves Calibration Mode.

Enter

Mode

Cal

Measure

0 second

Enters Calibration Mode.

Calibration

0 second

The “HOLD” icon is displayed,

then the unit will recalibrate the

buffer.

Measure

5 seconds

or more

Enters Buffer Select Mode.

Mea.

Eff.

Stand

Slope

Mode

Clear

All

0 second

Turns meter on/off.

Enter

Mode

Cal

Calibration

0 second

The “HOLD” icon is displayed,

then the unit will save the

calibration.

USING VISIONPLUS pH630FA

A. Power On/Off

Press the “On/Off ” key to turn the unit on. If the unit is running

then you can press the “On/Off” key to turn the unit off. The unit

will automatically turn off after 30 minutes of no key activity.

B. Select Buffer

1. Make sure unit is in “Measure Mode”.

2. Press the “Cal” key for 5 seconds, the unit will display

7.00 to indicate you successfully changed from

“6.86/4.00/9.18” set to “7.00/4.01/10.01” set.

3. Press the “Cal” key for 5 seconds again, the unit will

display 6.86 to indicate you successfully changed from

“7.00/4.01/10.01” set to “6.86/4.00/9.18” set.

[Note: There is no need to repeat this procedure every

time unless one decides to change the buffer settings.]

C. Calibrate pH

The user can select one, two or three point pH calibration.

1. Rinse the electrode & ATC assembly in distilled water

and immerse them in the first buffer solution. The

temperature displayed is the buffer temperature.

2. Press “Cal” key to initiate calibration, the buffer icon will

be on, the “HOLD” icon will flash until the unit detects a

stable reading, When a stable reading is reached, the

“HOLD” icon will be on. Press the “Enter” key to save

the calibration, wait a second, the first point has been

calibrated and the unit is ready to be sloped at the

second buffer.

[Note: At this moment, Press the “Hold” key, the unit

will exit the calibration mode. Single point calibration is

complete.]

3. Remove the electrode & ATC assembly from the first

buffer. Rinse them in distilled water and immerse them in

the second buffer solution. The unit will display the

temperature of the second buffer.

4. The first buffer icons will be on, the second and third

buffer icons will flash and the “HOLD ” icon will flash

until the unit detects a stable reading, When a stable

reading is reached, the “HOLD” icon will be on. Press the

“Enter” key to save the calibration, wait a second, the

second point has been calibrated and the unit is ready to

be sloped at the third buffer.

[Note: At this moment,Press the “Hold” key, the unit

will exit the calibration mode. Dual points calibration is

complete.]

5. Remove the electrode & ATC assembly from the second

buffer. Rinse them in distilled water and immerse them in

the third buffer solution. The unit will display the

temperature of the third buffer.

6. The first, second buffer icons will be on, the third buffer

icons will flash and the “HOLD” icon will flash until the

unit detects a stable reading, When a stable reading is

reached, the “HOLD” icon will be on. Press the “Enter”

key to save the calibration, wait a second, the third point

has been calibrated and the unit will automatically exit

the calibration mode. Three points calibration is

complete.

[Note: For accurate measurements, it is recommended

that pH calibration is preformed once a week and after

replacing the electrode.]

D. Measure

Dip the meter into the test solution in the “Measure

Mode”.

E. Hold Data

1. When the pH reading is stable, press “Hold” key once

to lock the reading.

Press “Hold” key again to unlock reading and the unit

will return to “Measure Mode”. The unit is now ready for

another measurement.

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.

5. Soak the electrode in a pH 4 buffer solution for 10

minutes and recalibrate the pH630FA following the

instructions detailed in section USING VISIONPLUS

pH630FA..

ERROR DISPLAYS AND TROUBLESHOOTING

LCD

Displa

ATC

Display

DISPLAY

Mode

Possible cause(s)

[Action(s)]

"ovr"

Measure

Temperature > 212 °F range.

[Bring solution to a

lower temperature.]

[Replace electrode &

ATC assembly .]

"udr"

Measure

Temperature < 14.2 °F range.

[Bring solution to a

higher temperature.]

[Replace electrode &

ATC assembly .]

"udr" or

"ovr"

-14.2 to 212 °F

Measure

When pH value < 0.00 pH

(udr) or >14.00 pH (ovr)

[Over Range or Recalibrate.]

"ovr"

32.0 to 140 °F

pH CAL

a.pH-

OFFSET

b.pH-

SLOPE

a. Offset @ 7.00 pH:

mV > 100 mV Offset

Offset @ 6.86 pH:

mV > 108.3 mV

b. New slope>ideal

slope by 30%

[Use a new buffer

solution.]

[Replace electrode & ATC

assembly.]

"udr"

32.0 to 140 °F

pH CAL

a.pH-

OFFSET

b.pH-

SLOPE

a. Offset @ 7.00 pH:

mV < -100 mV

Offset @ 6.86 pH:

mV < 91.7 mV

b. New Slope < ideal

slope by 30%

[Use a new buffer

solution.]

[Replace electrode & ATC

assembly.]

"udr" or

"ovr"

14.2 to 212 °F

pH CAL

a.pH-

OFFSET

b.pH-

SLOPE

When buffer temperature <

32.0 °F (udr) or > 140 °F (ovr)

[Bring buffer temperature

within 32.0 to 140 °F range .]

SPECIFICATIONS

Range

Resolution

Accuracy

0.00 to 14.00 pH

0.01 pH

±0.02 pH ± 1 LSD

Temperature

Range

Resolution

Accuracy

14.2 to 99.9 °F

100 to 212 °F

0.2 °F

1 °F

±0.6 °F

±1 °F

pH buffer recognition 7.00, 4.01, 10.01 pH or

6.86, 4.00, 9.18 pH

pH Temperature compensation

pH Buffer Temperature range

pH Electrode Offset recognition

AUTO 14.2°F to 212°F

32.0°F to 140°F

±100 mV at 7.00 pH

+108.3 mV / -91.7 mV at 6.86 pH

pH Electrode Slope recognition

±30% at 4.00, 4.01, 9.18 and 10.01 pH

Input impedance >10

Temperature

Temperature sensor Thermistor, 10 k

at 77 °F

General

Power: LR44 x 4

Battery life: 200 Hours

Ambient temperature range 32.0 to 122 °F

Display(pH/TEMP): pH:7.43 mm high

Temp:5.74 mm high

Case IP67 water-tight case

Weight 105 g

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