JENCO pH619 Installation manual

Operation Manual
MODEL pH 619
Microcomputer Based
pH&Temperature
Pocket
Meter
pH619

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 pH 619 OVERVIEW
………………….……..….… 3
A. Meter Description ……………………………………….…... ......3
B. VisionPlus Graphical Display
……………………….……..... .3
OPERATION MODES AND KEYPAD OPERATIONS
..... 4
A. Operation Modes …………………………………………………. 4
B. Keypad Operations
………………………………………………. 5
USING VISIONPLUS pH 619
………………………………………. 5
A. Power On/Off
…………………………………………………........ 5
B. Select Buffer
…………………………………………………….. 5
C. Calibrate pH
……………………………………………………… 6
D. Measure
……………………………………………………………… 7
REPLACE ELECTRODE
…………………………………………….. 7
ERROR DISPLAYS AND TROUBLESHOOTING
………… 8
SPECIFICATIONS
……………………………………….……….……... 9
WARRANTY ……………………………………………………………...… 9
1

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.
2
12

1
2
3
4
5
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.
3
Hold
Cal Enter
R
pH619
VisionPlus
1
2
3
4
5

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).
4

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.
5

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.]
6

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.
7

ERROR DISPLAYS AND TROUBLESHOOTING
pH
LCD ATC Display DISPLAY Mode Possible cause(s) [Action(s)]
"OVER" "OVER" pH Temperature > 100.0°C.
[Bring solution to a
lower temperature.]
"UNDR" "UNDR" pH
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.]
8

SPECIFICATIONS
pH Ran
g
eResolution Accurac
y
0.00 to 14.00
p
H0.01
p
H±0.02
p
H±1LSD
Temperature
Ran
g
eResolution Accurac
y
-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
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
12
Ω
Temperature
Temperature sensor Thermistor, 10 k
Ω 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
9

not been the result of abuse or misuse, within the warranty
period, please return-freight-prepaid and the correction of the
defect will be made free of charge. If you purchased the item
from our Jenco distributors and it is under warranty, please
contact them to notify us of the situation. Jenco Service
Department alone will determine if the product problem is due
to deviations or customer misuse.
Out-of-warranty products will be repaired on a charge basis.
RETURN OF ITEMS
Authorization must be obtained from one of our representatives
before returning items for any reason. When applying for
authorization, have the model and serial number handy, including
data regarding 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 from
careless or insufficient packing. A fee will be charged on all
authorized returns.
NOTE: Jenco reserves the right to make improvements in
design, construction and appearance of our products without
notice.
(Version: 06262009 )
Jenco Instruments, Inc.
7968 Arjons Drive, Suite C
San Diego, CA 92126 USA
TEL: [phone]
FAX: [phone]
E-Mail: [email protected]om; [e-mail]
Website: www.jencoi.com
Jenco Electronics Inc.
P.O. Box 117, Jhong Jheng RD, Linkou Shiang,
Taipei Hsien, Taiwan
TEL: [phone]
FAX: [phone]
E-Mail:[email protected]
Shanghai Jenco Instruments, Ltd.
18 Wang Dong Zhong Road, Sijing Town,
Songjiang Shanghai, China
TEL: [phone]
FAX: [phone]
E-Mail: [email protected]
Website: www.jenco.com.cn
10

使用说明书（中英文合并）内销用
机型：619 编制：TC CHEN 日期：2008-8-10
文件编号：K619-01 修改：杨启娜 日期：2009-6-26
版本：01 核准：杨健寿 日期：2009-6-26
改同618N排版格式。
090626：改界面插图为清楚的。