JENCO 3631 User manual
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Thank you for selecting the JENCO Model 3631. The 3631 pH/O P transmitter is a
rugged microprocessor based instrument assembled in a watertight 1/8 DIN case,
designed for use in laboratories and process control applications.
The system displays pH or O P or Temperature status in one large LCD screen.
The model 3631 microprocessor performs a self-diagnostic routine every time you turn
on the unit providing you with basic information on the stability of the instrument.
The model 3631 has an isolated 4-20mA analog output, offset and span configurable
for the pH or O P display.
$ !
Carefully unpack the unit and accessories. Inspect for damages made in shipment. If
any damage is found, notify your representative immediately. All packing
materials should be saved until satisfactory operation is confirmed.
3
%! '
ERVIEW
$# *
PANEL CUTOUT DIMENSIONS
45.0
1.772"
92.0
3.622"
0.813 0.032
0.61
0.024
0.00
0.000
0.000 0.000
±±
±
±
$4 '
1. Make a cutout on any panel, with a
thickness of 1/16 inch (1.5mm) to
3/8 inch (9.5mm). efer to
$4 ' .
Mount ng Brackets
$4 ' )
2. emove the mounting assembly
from the controller and insert the
controller into the cutout. efer to
$4 ' ).
4
Panel Mount ng brackets
$4 '
3. eplace the mounting bracket
assembly onto the controller and
secure the controller to the
mounting panel. efer to
$4 ' .
【
Note
】
:
If the equipment is used in a manner not specified by the manufacturer, the protection
provided by the equipment may be impaired.
5
# &
The front panel consists of a 4-digit LCD display and 4 keys.
5$!
5
STAND SLOPE 7.00 ATC
pH
ENTER
MODE
1. 6 7 key:
1a. In the , this key will switch the display in sequence from pH,
Temperature, O P absolute mV, O P relative mV and back to pH again.
1b. In the /!* , pressing this key for three seconds will
move you back to the previous parameter in the case when recalibration / resetting
is required.
6
2. 6 % 7 key:
2a. In the / , pressing this key will show the next possible option.
In the !* , pressing this key will show the next possible option and
increases the numeral increment.
2b. In the " pressing this key and 67 key at the same time,
the unit will enter the / .
3. 6 4 7 key:
3a. In the / , pressing this key will show the next possible option.
In the !* , pressing this key will show the next possible option and
decreases the numeral increment.
3b. In the , pressing this key and 67 key at the same time,
the unit will enter the !* #
4. 6 7 key:
In any mode where the user can change the settings, pressing this key will save
the new settings. If no change has been made then pressing this key will just move
7
the user to the next setting.
#
STAND SLOPE
RmV
CAL
6.86 7.00 ATC MAN
pH
1 2 3 4 5
12
11
10
9876
C
mA
1. Major LCD display.
2. $ 8 This icon will be displayed if the meter is in the /!* #
3. $ 8 This icon, when displayed, indicate in the 1 $ or ).$ !* .
4. ℃
℃℃
℃8Temperature and unit display.
8
5. 8 Unit indicator.
6. !$ 8 This icon will blink before Buffer 1 calibration. The icon will stay on while
Buffer 1 is being calibrated.
7. ! 8 This icon will blink before Buffer 2 calibration. The icon will stay on while
Buffer 2 is being calibrated.
8. #9 8 The 6.86 buffer group: 6.86, 4.00, 9.18.
9. ,#.. 8 The 7.00 buffer group: 7.00, 4.01, 10.01.
10. $ 8This icon will be displayed when a temperature probe is connected.
11. $ 8This icon will be displayed when a temperature probe is not connected.
12. 0 8 Unit indicator.
9
#
100~230VAC
LNE
mA
+ -
+V -V
10k TH Pt 1000
GND
INPUT FF
1. Connect the AC line to the rear of the instrument. The model 3631 can be used
with 100~240V AC at 50/60 HZ. Make sure the $ connector is connected to
the earth lead of the AC power line.
2. Set the proper load to the 4-20mA-output connector. Make sure that the load
impedance is less than 500 Ohms.
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3. V+ (5VDC) and V- (5VDC) output to provide excitation voltage for pH/O P
pre-amplifier only.
【
Note
】
:
(1) Make sure that the power is unplugged before wiring your probes etc.
(2) Make sure you connect the AC power cord to the correct AC terminals. Connecting
incorrectly may damage the unit permanently.
#
Turning on the unit will always display the . This instrument is designed
to provide 4 distinct measurements:
7.00 ATC
pH
ATC
C
mV
RmV
MODE MODE
MODE
MODE
11
1. 8 The degree of acidity or alkalinity of the solution.
2. 8 Current temperature of the solution.
3. 0 8 A measurement of absolute O P mV.
4. 08 A measurement of relative O P mV. The offset value at the mV
calibration will be added to the O P absolute value to display the O P relative
value.
【
Note
】
:
: : *; / : < ...0 / : = ...0
Pressing 67 key in the will cycle the display from the four modes
above.
&# !*
Pressing 647 key and 67 key at the same time, the meter will enter into the
!* .
1. :
12
+ENTER
ENTER ENTER ENTER
pH buffer 1 select
CAL
ATC
CAL
ATC
CAL
MAN
Pressing 6%7 key or 647 key in this screen will cycle the display from 01
(Thermistor: 10k ohm)、02 ( esistor: PT1000)、03 (Manual) modes above.
Select the preferred temperature compensation mode, press 67 key to save,
and enter the next setting screen.
2. />> :
Pressing 6%7 key or 647 key in this screen will cycle the display from 7.00、
6.86 buffer above.
Select the preferred buffer, press 67 key to save, and enter the next setting
screen.
13
Temperature compensat on select
pH buffer 2 select
ENTER
ENTER ENTER
CAL
6.86
pH
CAL
7.00
pH
3. />> ) :
Pressing [UP] key or [DOWN] key in this screen will cycle the display from 4.01、
10.01 (or 4.00、9.18) buffer above.
Select the preferred buffer, press 67 key to save, and enter the next setting
screen.
14
Buffer 1 7.00
mA output parameters select
ENTER
CAL
7.00
pH
CAL
7.00
pH
ENTER ENTER
Buffer 2 6.86
mA output parameters select
ENTER
ENTER ENTER
CAL
6.86
pH
CAL
6.86
pH
【
Note
】
:The pH buffer 2 is either 4.01 or 10.01 if select 7.00 buffer at pH buffer 1
select screen. The pH buffer 2 is either 4.00 or 9.18 if select 6.86 buffer at pH buffer 1
select screen.
4. $ ;
Pressing 6%7 key or 647 key in this screen will cycle the display from pH、
O P mV、O P mV modes above.
Select the preferred mode, press 67 key to save, and enter the next setting
screen.
15
Buffer 2 select
4mA output sett ng
ENTER
ENTER ENTER ENTER
RmV
CALCAL
pH
mV
CAL
【
Note
】
:The mA output will work with the choice of parameters.
5. 1 $ *;
mA output parameters select
20mA output sett ng
ENTER
ENTER
CAL CAL
mA
pH
16
Pressing 6%7 key or 647 key in this screen to adjust the 4 mA value, this
value is used for scaling the 4-20mA analog output.
Pressing 67 key to save, and enter the next setting screen.
6. ).$ *;
4mA output sett ng
Measure mode
ENTER
ENTER
CAL CAL
mA
pH
Pressing 6%7 key or 647 key in this screen to adjust the 20 mA value, this
value is used for scaling the 4-20mA analog output.
Pressing 67 key to save, and goes to the .
17
'# /
The model 3631 uses 2-point calibration for pH. The first point must be 6.86/7.00, and
the second point can either be 4.00/4.01 or 9.18/ 10.01.
In the pH , pressing 6%7 key and 67 key at the same time to
allow the meter to go to the pH / .
1. >> ?!$@ /;
Buffer 2 cal brat on
+ENTER ENTER
STAND
CAL
7.00
pH
STAND SLOPE 7.00
pH
HI2
STAND
CAL
7.00
pH
Enter into the pH calibration mode, the “!$” icon will flash, the unit is ready to
be standardized at the first buffer. inse the pH and ATC/Temp probes in distilled
water and immerse them in the first buffer solution (either 7.00 or 6.86). Allow
temperature reading to stabilize, then press “” key to calibrate. The “”
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icon will flash until the unit detects a stable reading. Once the unit calibrates the
first point, the “!” icon will flash. The unit is ready to be sloped at the
second buffer.
2. >> ) ?!@ /;
inse the pH and ATC/Temp probe in distilled water and immerse them in the
second buffer solution (either 4.00/4.01 or 9.18/10.01). Allow temperature reading
to stabilize, then press “” key to calibrate. The “” icon will flash until the
unit detects a stable reading. Once the unit calibrates the second point and the
unit will automatically exit the / and goes to the pH
. Dual point calibration is complete.
ENTER
Buffer 1 cal brat on
Measure mode
STAND SLOPE
CAL
7.00
pH
STAND SLOPE
CAL
7.00
pH
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【
Note
】:
In the !* (1. Temperature compensation select), select 03
(Manual temperature compensation mode) if no temperature probe is being
used. Press the 6%7 key or 647 key in the
mode to adjust the value to that of the test solution temperature.
Then calibrate buffer 1 and buffer 2.
# 0 /
Rmv normal mode
or
CAL
RmV
CAL
RmV RmV
+ENTER
The model 3631 uses 1-point calibration for mV. In the 0 ,
pressing 6%7 key and 67 key at the same time, the meter will enter into 0
/ .
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