JENCO VisionPlus 3177 User manual

0
Operation Manual
MODEL 3177
Microcomputer Based
Conductivity/TDS/ Salinity/
Temperature Benchtop Meter
3177

1
CONTENTS
GENERAL INTRODUCTION………………....................2
INITIAL INSPECTION……...………………....................2
POWER INPUT..…….……...………………....................2
INSTALLING THE BATTERIES..…………....................3
DISPLAY & KEYS FUNCTIONS…..……………...…………4
A. Display ................................................................4
B. Keys.....................................................................5
OPERATIONAL PROCEDURES..…….........................6
A. Calibration............................................................6
B. Conductivity Measurements....................................8
C.Preparing Standard Solutions...............................8
ERROR DISPLAYS AND TROUBLESHOOTING.........9
SPECIFICATIONS………………..……........................10
WARRANTY………………………….........................11

2
GENERAL INTRODUCTION
Thank you for selecting the 3177 meter. The 3177 is a precision tool
that measures Conductivity, TDS, Salinity and Temperature. A
built-in microprocessor stores, calculates and compensates for all
parameters related to Conductivity, TDS, Salinity and Temperature
determinations.
This meter has a waterproof IP54 case. The mechanical keys are
highly reliable with tactile and audio feedback. It is powered by six
AAA-size alkaline batteries or with a UL / CE approved AC adapter
(OUTPUT: DC9V). The meter also displays a “BAT” message when
the batteries are in need of replacement. Re-calibration is not
required when power is restored.
The front of the meter has a large LCD that displays Conductivity,
TDS, Salinity and Temperature simultaneously along with user
prompts and mode indicators. The unit prompts the user through
calibration and measurement procedures.
The model 3177 micro-processor allows the user to easily
recalibrate the parameters for the probe. A few keystrokes will
adjust all the parameters for conductivity and will also give the user
the option to select four types (0.01, 0.1, 1.0, 10.0) of probe cell
constant for a better selection of available probes and applications.
And the user can input K value of the cell by keypad directly.
The system simultaneously displays temperature in ℃along with
either Conductivity, TDS or Salinity. The user can switch back and
forth from all these displays by just pushing a single “MODE” key.
Other features include automatic conductivity ranging, automatic
temperature compensation and 50/60 Hz AC noise rejection. This
meter is user-friendly for laboratory application.
INITIAL INSPECTION
Carefully unpack the unit 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.
POWER INPUT
The model 3177 can be powered by an UL / CE approved 100 ~ 240
VAC adaptor as well as 6 “AAA” alkaline batteries. Check the label
on the AC adaptor supplied with the instrument to make sure that
the AC line voltage is correct. If the wrong AC adaptor is supplied,
notify your JENCO representative immediately.

3
INSTALLING THE BATTERIES
To insert the batteries into the meter, follow the procedure outlined
below.
1. Use a Philip screw driver and unlock the battery cover by
turning the screw driver in the counter clockwise direction.
After unlocking the screw, take off the battery cover (Fig.1)
2. Replace the old batteries with new ones and install them on
the correct polarity position.
3. Put the battery cover back on the instrument. Use a Philip
screw driver and turn the screw in the clockwise direction to
lock the battery cover.
Figure 1: Battery compartment

4
DISPLAY & KEYS FUNCTIONS
A. Display
1
2
3
4
5
6
7
8
9
10
11
12
Figure2: Active LCD screen
1. mS/cm-
Millisiemens , indicates
Conductivity measurement.
7. mg/L-
Milligrams/Liter indicates TDS
measurement.
2. BAT-
Low battery indicator.
8. CELL K=
Indicates conductivity cell
constant value.
3. uS/cm-
Microsiemens, indicates
Conductivity measurement.
9. %/ ℃-
Indicates Temperature
Coefficient
4. CAL-
This will be displayed when the
unit enters into the calibration
mode.
10. MAIN DISPLAY-
For Conductivity, TDS and
Salinity values.
5. AUTO-
Auto ranging indicator
11. SECONDARY DISPLAY-
For temperature in ℃.
6. ATC/MAN-
ATC indicator will be displayed
if a temperature probe is
connected otherwise the MAN
indicator will be displayed.
12. ppt-
Parts per thousand, indicates
Salinity measurement.

5
B. Keys
Mea.
Eff.
Stand
Slope
Mode
Clear
On/Off-
Press and hold this key for 2 seconds to power on
and shut off the meter.
Enter
Mode
Cal
Cal-
During normal operation, this key will change the
mode from “Measure” mode to “Calibration” mode.
Clear
Mode
Cal
Enter
Mode / Clear-
In measure mode, press this key for 0 second to
sequentially display Conductivity, TDS and Salinity.
Under Conductivity, TDS and Salinity measure
mode. When the “Mode/Clear” key is pressed for 5
seconds, all segments of the LCD will be lit up, it
clears all calibration values stored in the internal
memory. The unit now requires new conductivity
calibration before use.
Mea.
Eff.
Stand
Slope
Mode
Clear
Mea.
Eff.
Stand
Slope
Mode
Clear
Up/Down-
In the conductivity/TDS/salinity measure mode, these
two keys are used to manually enter the temperature
values. They have no effect on the unit when
operating in ATC mode.
In the conductivity calibration mode, these two keys
are used to adjust values in conductivity.
Enter
Mode
Cal
Enter-
In Calibration mode, press this key to save the
current parameter to memory.

6
OPERATIONAL PROCEDURES
A. Calibration
Calibration setup contains six sections: TDS Constant,
Temperature Coefficient, Temperature Reference, Probe
Basic Cell Constant, Standard Solutions Calibration and K
Value Input. To access these sections:
1. Connect the conductivity probe to the unit and turn the unit
on.
2. In conductivity, TDS or salinity mode, allow temperature
reading to stabilize, press “Cal” key to enter the calibration
mode. “CAL” icon appears on the LCD.
[Note: Press “Enter” key to accept any values changes in
each section and automatically advance to the next section. If
there are no changes, the unit accepts the current value and
proceeds to the next section.]
TDS Constant
TDS is determined by multiplying conductivity (mS/cm) by a
TDS factor. The default factor value is 0.65. To change the
TDS factor, use the “Up” and “Down” keys to adjust the
value between 0.30 ~ 1.00. Press “Enter” key to save the
new value and go to the next calibration parameter.
Temperature Coefficient
The unit uses the temperature coefficient to calculate
temperature compensated conductivity. The default value is
1.91%. To change the Temperature Coefficient, use the “Up”
and “Down” keys to adjust the value between 0.00 ~ 4.00%.
Press “Enter” key to save the new value and go to the next
calibration parameter.
Temperature Reference
The unit uses the temperature reference value to calculate
temperature compensated conductivity. The default value is
25 ℃. To change the temperature reference, press the “Up”
and “Down” keys to adjust the value between 15 ~ 25 ℃.
Press “Enter” key to save the new value and go to the next
calibration parameter.

7
Probe Basic Cell Constant
The main display shows the Cell Constant of the conductivity
probe (calibrated previously or default, the deviation range is
70% ~ 130%). The secondary display shows the current
selected cell constant which is either 0.01, 0.10, 1.00 or 10.0.
Press the “Up”and “Down” keys to select the one you want
to use. Press “Enter” key to save the new value and go to the
next calibration parameter.
Standard Solutions Calibration
Immerse the probe in a standard of known conductivity
solution (See section Preparing Standard Solutions),
preferably a standard in the middle range of the solutions to
be measured. Immerse the probe (at least 2” to 3” or 5 ~ 7cm
from the tip) without touching the sides of the calibration
container. Shake the probe lightly to remove any air bubbles
trapped in the conductivity cell. The unit will display the
conductivity value. Wait for the values of temperature and
conductivity to stabilize for a few seconds. Press the “Up”
and “Down”keys to adjust the reading of the display until it
matches the value of the known standard conductivity solution
at 25 ℃. Press the “Enter”key to save and go to the next
calibration parameter.
K Value Input
(a) The unit will display the conductivity value of the standard
solution with the CELL K= staying on.
[Note: If the Cell Constant has been calibrated, please
press the “Enter” key to exit calibration and return to
normal operation.]
(b) Press and hold the “Up” or “Down” key, the main display
will show the deviation of the conductivity probe. You can
now input the K value (from 70%~130% of the probe basic
cell constant). After releasing the “Up” or “Down” key,
the unit will display the conductivity value with the CELL
K= staying on.
(c) Adjust the K value until the conductivity value displayed on
the LCD matches the value of the known standard
conductivity solution at 25℃.
(d) Press “Enter” key to save the new K value of the cell to
exit calibration and return to normal operation mode.

8
B. Conductivity Measurements
1. Turn the unit on. Place the probe in the solution to be
measured. Immerse the probe (at least 2” to 3” or 5~7cm from
the tip). Shake the probe lightly to remove any trapped air
bubbles in the conductivity cell.
2. Press “Mode” key to enter the desired measurement mode
(Conductivity, TDS or Salinity). The message “over” or “undr”
may appear briefly on the display indicate auto-ranging; this is
normal. Allow temperature to stabilize before taking
measurements.
C. Preparing Standard Solutions
Suitable conductivity standards are available commercially or
the user can prepare them using research grade reagents.
Here are some standard solutions the user can prepare to
calibrate the probe of the model 3177.
1. Standard solution of 1413 uS/cm at 25 ℃: Accurately weight
out 0.746 grams of research grade dried Potassium Chloride
(KCL). Dissolve in 1000 ml of distilled water.
2. Standard solution of 12.90 mS/cm at 25 ℃: Accurately weight
out 7.4365 grams of research grade dried Potassium Chloride
(KCL). Dissolve in 1000 ml of distilled water.
3. Standard solution of 111.9 mS/cm at 25 ℃: Accurately weight
out 74.264 grams of research grade dried Potassium Chloride
(KCL). Dissolve in 1000 ml of distilled water.
[Note: You can store the unused portion of the standard
solution in a plastic container for six months but the air space
between the cap and the solution must be kept to an absolute
minimum. Storing the excess solution below 4 ℃can increase
the storage life. If you have any doubt of the accuracy of the
stored solution, a fresh batch should be prepared.]

9
ERROR DISPLAYS AND TROUBLESHOOTING
[Note: If the meter still does not perform normally after the above
measures are taken, call JENCO representative.]
Main
Display
Secondary
Display
Possible
cause(s)
Corrective
Action(s)
"over" during
measurements
0.0 ~ 100.0 ℃
1. Sample
Conductivity
value >
200.0mS;
Sample TDS >
200 g/L.
Sample
Salinity > 70.0
ppt
2. Conductivity cell
contaminated or
defective.
3. Incorrect K
constant value
input.
1. Sample cannot
be tested
.
2. Decontaminate
/ clean cell or
replace cell.
3. Input correct K
value.
"over" during
calibration
0.0 ~ 100.0 ℃
1. Incorrect
standard
solution.
2. Conductivity cell
contaminated or
defective.
3. Incorrect K
constant value
input.
1. Replace
standard
solution.
2. Decontaminate
/ clean cell or
replace cell.
3. Input correct K
value.
"over " during
measurements
over
1. Sample
temperature >
100 ℃.
2. Defective
conductivity cell.
1. Reduce
sample
temperature.
2. Replace cell.
undr
1. Sample
temperature
< 0.0 ℃
2. Defective
conductivity cell.
1. Increase
sample
temperature.
2. Replace cell.

10
SPECIFICATIONS
Display
Range
Resolution
Accuracy
Conductivity
/TDS
K=0.01
0.000 ~ 1.999 uS/cm /
0.000 ~ 1.999 mg/L
2.00 ~ 19.99 uS/cm/
2.00 ~ 19.99 mg/L
20.0 ~ 199.9 uS/cm/
20.0 ~199.9 mg/L
0.001 uS/cm/
0.001 mg/L
0.01 uS/cm/
0.01 mg/L
0.1 uS/cm/
0.1 mg/L
±0.5% F.S.
Conductivity
/TDS
K=0.1
0.00 ~ 19.99 uS/cm/
0.00 ~ 19.99 mg/L
20.0 ~ 199.9 uS/cm/
20.0 ~199.9 mg/L
200 ~ 1999 uS/cm/
200 ~ 1999 mg/L
0.01 uS/cm/
0.01 mg/L
0.1 uS/cm
/0.1 mg/L
1 uS/cm/
1 mg/L
±0.5% F.S.
Conductivity
/TDS
K=1.0
0.0 ~ 199.9 uS/cm/
0.0 ~ 199.9 mg/L
200 ~ 1999 uS/cm/
200 ~ 1999 mg/L
2.00 ~ 19.99 mS/cm/
2.00 ~ 19.99 g/L
0.1 uS/cm/
0.1 mg/L
1 uS/cm/
1 mg/L
0.01 mS/cm/
0.01 g/L
±0.5% F.S.
Conductivity
/TDS
K=10.0
0 ~ 1999 uS/cm/
0 ~ 1999 mg/L
2.00 ~ 19.99 mS/cm/
2.00 ~ 19.99 g/L
20.0 ~ 199.9 mS/cm/
20.0 ~ 199.9 g/L
1 uS/cm/
1 mg/L
0.01 mS/cm/
0.01 g/L
0.1 mS/cm/
0.1 g/L
±0.5% F.S.
Salinity
0.0 ~ 70.0 ppt
0.1 ppt
±0.5% F.S.
Temperature
0.0 ~ 100.0 °C
0.1 °C
±0.3 °C
Reference Temperature
15.0 ~ 25.0 °C, default at
25.0 °C
Temperature Coefficient
0.0% ~ 4.0%, default at 1.91%
Cell Constant
0.01; 0.10; 1.00; 10.0
TDS Constant Range
0.30 ~ 1.00, default at 0.65
Power
6 X 1.5 V AAA Batteries or
100 ~ 240 VAC adapter
Calibration Back-up
EEPROM
Audio Feedback
All Touch Keys
Screen
Segment LCD backlight
Ambient Temperature Range
0 ~ 50 °C
Relative Humidity
up to 90%
Case
IP54
Dimensions (W x D x H) /
Weight
150 x 210 x 45 mm /
430 grams

11
WARRANTY
JENCO warrants this product to be free from significant deviations
in material and workmanship for a period of 1 year from date of
purchase. If repair or adjustment is necessary and has not been
the result of abuse or misuse, within the year 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.
Jenco Instruments, Inc.
7968 Arjons Drive, Suite C
San Diego, CA 92126 USA
TEL: [phone]
FAX: [phone]
E-Mail: [email protected]; [email protected]
Website: www.JENCOi.com
Jenco Electronics, Ltd.
6F., No. 81, Sec. 2, Chang-an E. Rd., Jhongshan District, Taipei
City 104, Taiwan
TEL: [phone]
FAX: [phone]
E-Mail: [email protected]
Website: www.JENCO.com.tw
Shanghai Jenco Instruments, Ltd.
18 Wang Dong Zhong Road
Sijing Town, Songjiang
Shanghai, China 201601
TEL: [phone]
FAX: [phone]
E-Mail: [email protected]
Website: www.JENCO.com.cn