JENCO PH619 Installationshandbuch

Operation

Manual

MODEL pH 619

Microcomputer

Based

pH&Temperature

Pocket

Meter

pH619

CONTENTS

INITIAL INSPECTION AND ASSEMBLY

……………………..

BEFORE YOUR FIRST USE

….………………...…………………......

A. Replace the Batteries

……..……….…………………………….

B. Soak the Electrode

………..………………………………………

C. Setup and Calibrate the Electrode and Meter

…………...

VISIONPLUS pH 619 OVERVIEW

………………….……..….…

A. Meter Description

……………………………………….…...

......3

B. VisionPlus Graphical Display

……………………….…….....

OPERATION MODES AND KEYPAD OPERATIONS

.....

A. Operation Modes

………………………………………………….

B. Keypad Operations

……………………………………………….

USING VISIONPLUS pH 619

……………………………………….

A. Power On/Off

…………………………………………………........

B. Select Buffer

……………………………………………………..

C. Calibrate pH

………………………………………………………

D. Measure

………………………………………………………………

REPLACE ELECTRODE

……………………………………………..

ERROR DISPLAYS AND TROUBLESHOOTING

…………

SPECIFICATIONS

……………………………………….……….……...

WARRANTY

……………………………………………………………...…

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. Replace the Batteries

Replace the battery when the

blinking low battery indicator

“”appears on the upper

right corner of the LCD screen.

The instrument can operate

within specifications for

approximately 2~3 hours after

low battery 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 pH

meter.

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

before first use or after storage.

C. Setup and Calibrate the Electrode and Meter

VisionPlus pH 619 must be setup and calibrated before your

first use. Please follow the instructions detailed in section

USING VISIONPLUS pH 619.

VISIONPLUS pH 618N 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. VisionPlus Graphical Display

1. MEASURE mode indicator

2. pH reading

3. CALIBRATION buffer(s)

4. BATTERY display

5. TEMPERATURE reading

Note: ℃or °F is factory pre-set.

Hold

Cal Enter

pH619

VisionPlus

OPERATION MODES AND KEYPAD OPERATIONS

A. Operation Modes

VisionPlus pH meter has 5 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) or

6.86(6.86/4.00/9.18).

5. Electrode Efficiency Mode.

In MEASURE mode, press

the “Enter” key for about 5

seconds to display the

electrode’s efficiencies.

B. Keypad Operations

Key Operation

Mode

Duration Function

On/Off All 0 seconds Turns meter on/off.

Measure 0 seconds Enters Calibration Mode.

Measure 5 seconds Enters Buffer Select

Mode.

Cal

Calibration 0 seconds Recalibrates the buffer.

Measure 0 seconds Holds measured values.

Press again to resume

measuring.

Hold Calibration 0 second Exits pH calibration.

Measure 5 seconds Displays the electrode’s

efficiencies.

Enter Calibration 0 seconds Saves the calibration

data.

USING VISIONPLUS pH 619

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

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 pH & ATC sensor 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 “WAIT” icon will flash until the unit

detects a stable reading. When a stable reading is

reached, the “WAIT” icon will hold still. Press the

“Enter” key, the “SAVE” icon will be on. 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 pH & ATC sensor 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 and second buffer icons will be on, the “WAIT”

icon will flash until the unit detects a stable reading.

When a stable reading is reached, the “WAIT” icon will

hold still. Press the “Enter” key, the “SAVE” icon will be

on. 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 pH & ATC sensor 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.

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

“WAIT” icon will flash until the unit detects a stable

reading. When a stable reading is reached, the “WAIT”

icon will hold still. Press the “Enter” key, the “SAVE” icon

will be on. 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”.

REPLACEELECTRODE

OINTENANCE

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 pH

619 following the instructions detailed in section

USINIG VISIONPLUS pH619.

ERROR DISPLAYS AND TROUBLESHOOTING

LCD ATC

Display DISPLAY

Mode Possible cause(s)

[Action(s)]

"OVER" "OVER" pH Temperature > 100.0°C.

[Bring solution to a

lower temperature.]

"UNDR"

Temperature < -10.0°C.

[Bring solution to a

higher temperature.]

"OVER" -10.0~

100.0°C pH

pH >14.00pH .

[Over Range or

Recalibrate.]

"OVER"

0.0 ~ 60.0°C

pH CAL

a.pH-

OFFSET

b.pH-

SLOPE

a. Offset @ 7.00pH:

mV>100mV

[email protected]:

mV>108.3mV

b. New slope>ideal

slope by 30%

[Use a new buffer

solution.]

[Replace electrode.]

"UNDR"

0.0 ~ 60.0°C

pH CAL

a.pH-

STAND

b.pH-

SLOPE

a. Offset @ 7.00pH:

mV<-100mV

Offset @ 6.86pH:

mV< -91.7 mV

b. New Slope<ideal

slope by 30%

[Use a new

buffer solution.]

[Replace electrode.]

"UNDR" -10.0 ~

100.0°C pH

pH<0.00pH.

[Under Range or

Recalibrate.]

SPECIFICATIONS

pH Ran

eResolution Accurac

0.00 to 14.00

H0.01

H±0.02

H±1LSD

Temperature

Ran

eResolution Accurac

-10.0 to 100.0 °C

14.0 to 212.0 °F 0.1 °C

0.2 °F ±0.3 °C

±0.6 °F

pH buffer recognition pH 7.00, 4.01, 10.01 or

pH 6.86, 4.00, 9.18

pH Temperature compensation

pH Buffer Temperature range

pH Electrode Offset recognition

AUTO -10.0 °C(14.0°F) to

100.0 °C(212.0 °F)

0.0°C (32°F) to 60.0°C(140.0

°F)

±100 mV at pH 7.00

+108.3 mV / -91.7 mV at pH 6.86

pH Electrode Slope recognition

±30% at pH 4.00, 4.01, 9.18 and 10.01

Input impedance >10

Temperature

Temperature sensor Thermistor, 10 k

at 25°C

Temperature unit Factory pre-set

General

Power LR44 x 4

Battery life 200 Hours

Automatically turn off After 30 minutes of no key

activity

Ambient temperature range 0.0 to 50.0 °C

Display 98x64 graphic LCD

Case IP67 water-tight case

Weight 105 g

WARRANTY

Jenco Instruments, Ltd. warrants this product to be free from

significant deviations in material and workmanship for a period

of 1 years for the meter and 6 months for the electrode from

date of purchase. If repair or adjustment is necessary and has

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