JENCO 3020M User manual

Operation Manual
Hand-held Conductivity/Salinity/TDS/
Temperature Meter
3020M

CONTENTS
ENERAL INTRODUCTION………………....................2
INITIAL INSPECTION……...………………....................2
WATER PROOF…….……...………………....................2
INSTALLIN THE BATTERIES..…………....................3
DISPLAY & KEYS FUNCTIONS…..……………...…………4
A. Display ................................................................4
B. Keys.....................................................................5
MODES OF THE METER………....…….........................6
OPERATIONAL PROCEDURES..…….........................8
A. Preparing Standard Solutions................................8
B. Calibration........................................................8
C. Conductivity Measurements..................................10
D. Save, Recall and Delete Data.................................10
ERROR DISPLAYS AND TROUBLESHOOTIN .......12
SPECIFICATIONS………………..……........................13
WARRANTY………………………….........................14
1

ENERAL INTRODUCTION
Thank you for selecting the 3020M meter. The 3020M is a precision
tool that measure conductivity, salinity, TDS and temperature. A
uilt-in microprocessor stores, calculates and compensates for all
parameters related to conductivity and temperature determinations.
This unit has a waterproof IP65 case. The touch mode keys are
highly relia le with tactile and audio feed ack. This meter can
operate with one 9V attery. Re-cali ration is not required when
power is restored.
The front of the meter has a large LCD that displays temperature
and either temperature compensated or non-temperature
compensated conductivity, salinity or TDS simultaneously along
with user prompts and mode indicators. The unit prompts the user
through cali ration and measurement procedures.
The unit is also equipped with a non-volatile memory allowing the
user to store 50 different sets of readings. This unit will assign a site
num er for each set of reading so the user can review the data
easily.
The model 3020M is availa le with a four-wire conductivity cell
(K=0.475) and a two-wire conductivity cell (K=0.1). Other features
include automatic conductivity ranging, automatic temperature
compensation, long attery life, and 50/60 Hz AC noise rejection.
This unit is universal and user-friendly for field, industrial and
la oratory applications.
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 e saved
until satisfactory operation is confirmed.
WATER PROOF
Though the 3020M meter is housed in a watertight case, DO NOT
use it underwater. The watertight case prevents permanent damage
to the unit if accidentally dropped into non-corrosive solutions.
Follow these steps immediately if the unit is immersed in any
solution:
1. Rinse unit carefully with distilled water. After rinsing and drying,
inspect and clean connectors to remove all contaminants that
2

may affect pro e connections.
2. Wait for the unit and pro e to dry completely efore resuming
operation.
3. If the unit does not function correctly after steps1 and 2, call
JENCO for possi le repair or replacement (see Warranty).
INSTALLIN THE BATTERIES
The 3020M meter is packaged with one 9V attery required for
operation. To insert the atteries into the meter, follow the
procedure outlined elow.
1.
2.
3.
Figure 1: Battery compartment
Use a screw driver to remove the two screws and attery cover
to expose the attery compartment. (Figure 1.)
Note the polarity and insert the atteries into the attery
compartment correctly.
Replace the attery cover and make sure to secure the two
screws for the water-tight feature.
[Note: 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.]
3

DISPLAY & KEYS FUNCTIONS
A. Display
Figure 2: Active LCD screen
1. BAT- 8. Delete-
Low attery indicator.
2. Full-
This will indicate that all 50
data storage sites are used up.
3. CELL-
To delete stored data.
9. Each-
To delete a single set of data
from the data storage.
10. ℃/%-
Displays during cali ration:
Indicates conductivity cell "℃": Indicates temperature
constant value.
4. TDS-
Displays when measuring total
dissolved solids.
reference unit.
"%": Indicates temperature
coefficient unit.
11. ppt-
Parts per thousand for salinity
measurement.
12. MAIN DISPLAY-
5. SALINITY- For compensated and
Displays when
salinity.
6. CAL-
measuring uncompensated conductivity,
salinity and TDS values.
13. uS/mS-
microsiemens or millisiemens
Cali ration mode indicator for conductivity measurement.
7. All- 14. mg/L-
To delete all the data in the
Grams/Liter for
TDS
data storage. measurement.
4

15. Temperature
display
and unit 18. CONDUCTIVITY-
Displays when measuring
conductivity.
19. Recall-
16. Data storage site num er. To recall data from the data
storage.
20. UNCOMPENSATED-
17. Save- Distinguish
etween To save
a reading into the data temperature
compensated
storage. and non-
temperature
compensated reading.
B. Keys
ON/OFF-
Powers on and shuts off the meter.
MODE-
Selects display mode. In normal operation, press this
key to
sequentially
display
compensated
conductivity, salinity, total dissolved solids (TDS),
uncompensated conductivity, Recall and Delete
interface.
In cali ration mode, press this key to exit the current
cali ration parameter and enter into the next one.
In "Recall" and "Delete" modes, press this key to exit
"Recall" and "Delete" modes respectively.
UP/DOWN-
Increases or decreases the display value as desired.
In "Recall" mode, view saved data and data storage
site num er y pressing these keys.
In "Delete" mode, press these keys to select etween
the "Delete Each" and "Delete All" mode.
In "Delete Each" mode, view to e deleted data and
data site num ers y pressing these keys.
CAL-
In "Measurement" mode, press this key to enter into
"Cali ration" mode.
5

ENTER-
In "Cali ration" mode, press this key to save the
current parameter to memory.
In "Measurement" mode, press this key to save
reading into the next availa le data storage site.
At the Recall interface, press this key to display the
last set of saved data.
At the Delete interface, press this key to go into
"Delete" mode.
In the "Delete All" mode, press this key to delete all
saved data.
In the "Delete Each" mode, press this key to delete a
single set of data.
MODES OF THE METER
1. UNCOMPENSATED mode:
The unit will display
non-temperature compensated
conductivity reading.
2. COMPENSATED mode:
The unit will display
temperature compensated
conductivity reading.
3. TDS mode:
The unit will display TDS
reading.
6

4. SALINITY mode:
The unit will display
SALINITY reading.
5. Recall interface:
Press "ENTER" key to go
into recall mode.
6. Recall mode:
In this mode, user can recall
data saved in memory.
7. Delete interface:
Press "ENTER" key to go
into delete mode.
8. Delete mode:
In this mode, user can erase
each data or all data saved in
memory.
7

OPERATIONAL PROCEDURES
A. Preparing Standard Solutions
Suita le conductivity standards are availa le commercially or the
user can prepare them using research grade reagents.
Here are some standard solutions the user can prepare to cali rate
the pro e of the model 3020M.
1.
2.
3.
4.
5.
Standard solution of 147uS at 25℃: Accurately measure out
100ml of the 1413uS standard solution as in point 1. Dilute it
with 900ml of distilled water.
Standard solution of 14.94uS at 25℃: Accurately measure out
100ml of the 147uS standard solution as in point 4. Dilute it
with 900ml of distilled water.
Standard solution of 1413uS at 25℃: Accurately weight out
0.746 grams of research grade dried Potassium Chloride
(KCL). Dissolve in 1000ml of distilled water.
Standard solution of 12.90mS at 25℃: Accurately weight out
7.4365 grams of research grade dried Potassium Chloride
(KCL). Dissolve in 1000ml of distilled water.
Standard solution of 111.9mS at 25℃: Accurately weight out
74.264 grams of research grade dried Potassium Chloride
(KCL). Dissolve in 1000ml of distilled water.
[Note: The user can store the remaining solution in a plastic
container for one week ut the air space etween the cap and
the solution must e kept to an a solute minimum. Storing the
excess solution elow 4℃ can increase the storage life. If you
have any dou t of the accuracy of the stored solution, a fresh
atch should e prepared.]
B. Calibration
Cali ration setup contains five parameters: TDS, Cell, Temperature
Coefficient, Temperature reference and Conductivity Cali ration. To
access these sections:
1. Connect the conductivity pro e either the 3020P (K=0.475) or
the 109P (K=0.1) to the unit and turn the unit on. The screen
will display the "CELL" icon and the cell constant of the
previous cali ration. (Factory default is set at K=0.475).
8

2. Allow temperature reading to sta ilize, press "CAL" key to
enter the cali ration mode. The "CAL" icon appears on the
LCD. Press "MODE" key to sequentially view previous
cali ration settings.
TDS
TDS is determined y multiplying conductivity (mS) y 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
etween 0.30 and 1.00. Press "ENTER" key to save the new
value and the unit will automatically go into the next
cali ration parameter. If "MODE" key is pressed instead of the
"ENTER" key, any changes made will e cancelled and the
previous cali ration settings will e retained.
CELL
Use "UP" and "DOWN" keys to select cell constant etween
"C0.5" or "C0.1" on the secondary display. Press "ENTER"
key to confirm selection and the unit will then automatically go
into the next cali ration parameter. If "MODE" key is pressed
instead of the "ENTER" key, any changes made will e
cancelled and the previous cali ration settings will e
retained.
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 etween 0 and 4.00%.
Press "ENTER" key to save the new value and the unit will
automatically go into the next cali ration parameter. If
"MODE" key is pressed instead of the "ENTER" key, any
changes made will e cancelled and the previous cali ration
settings will e retained.
Temperature Reference
The unit uses the temperature reference value to calculate
temperature compensated conductivity. The default value is
25℃. To change the temperature coefficient , use the "UP"
and "DOWN" keys to adjust the value etween 15℃ and 25
℃. Press "ENTER" key to save the new value and the unit will
automatically go into the next cali ration parameter. If
"MODE" key is pressed instead of the "ENTER" key, any
9

changes made will e cancelled and the previous cali ration
settings will e retained.
Conductivity Calibration
(a) Immerse the pro e in a standard of known conductivity,
prefera ly a standard in the middle range of the solutions
to e measured. Immerse the pro e (at least 2" to 3" or
5~7cm from the tip) into standard solution without touching
the sides of the cali ration container. Shake the pro e
lightly to remove any air u les trapped in the
conductivity cell.
( ) Allow temperature to sta ilize. The message "rAGE"
(range) may appear riefly on the display indicating
auto-ranging; this is normal. After temperature sta ilization,
use the "UP" and "DOWN" keys to adjust the conductivity
value to that of the conductivity standard at 25℃. Press
"ENTER" key to cali rate. The unit eeps to indicate a
successful cali ration. Cali ration is now complete and the
unit will automatically switch to "Measurement" mode.
C. Conductivity Measurements
1.
2.
Turn the unit on. Place the pro e in the solution to e
measured. Immerse the pro e (at least 2" to 3" or 5~7cm
from the tip) in the sample solution. Shake the pro e
lightly to remove any trapped air u les in the
conductivity cell.
Press "MODE" key to enter into the desired
measurement mode. The message "rAGE" (range) may
appear riefly on the display indicating auto-ranging; this
is normal. Allow temperature to sta ilize.
D. Save, Recall and Delete Data
a.
1.
2.
Saving readings to memory.
In compensated conductivity, salinity, total dissolved solids
(TDS) and uncompensated conductivity modes, press the
"ENTER" key to save data. The "Save" icon with the
corresponding site num er will lit up for a rief moment to
indicate a successful data save.
If the "Full" icon is displayed, this means that all 50 data saving
sites are used up. No new data can e saved until existing
saved data are deleted.
10

b.
1.
2.
3.
c.
1.
2.
3.
4.
5.
Recalling readings from memory.
To recall saved data, press "ENTER" key at the Recall
interface to go into "Recall" mode.
Press the "UP" or "DOWN" keys to select the storage site
num er.
Press "MODE" key to exit "Recall" mode.
Deleting data.
Press the "ENTER" key at the Delete interface to go into
"Delete" mode.
Select "Delete All" or "Delete Each" mode y pressing the "UP" or
"DOWN" key.
In the "Delete all" mode, press "ENTER" key to clear all stored
data. Deletion is now complete.
In the "Delete Each" mode, use "UP" and "DOWN" key to
select data to e deleted. Then press "ENTER" key to delete.
Deletion is now complete. The next set of saved data will
automatically move up a slot in the storage site.
Press "MODE" key to exit "Delete" mode.
11

ERROR DISPLAYS AND TROUBLESHOOTIN
Main
Display
Secondary
Display
Possible
Cause(s) Corrective Action(s)
●Conductivity
is > 200.0mS
(K=0.475).
●Ensure the pro e is
immersed at least
2"~3" or 5~7cm from
the tip, elow the
"OvEr" during /●Conductivity surface of the
measurements is > 200.0uS
(K=0.1)
sample/standard
solution.
●Allow sufficient time
●Salinity is for the electrode and
> 70.0ppt.
Temp
pro e to
sta ilize.
●
Recali rate with
"OvEr " during
cali ration
"OvEr " during
measurements
/
ovr
udr
Cell Constant
Cali ration is
out of range.
Temperature >
90.0℃
Temperature <
-10.0℃
●
●
correct value for the
conductivity
standard.
Replace conductivity
standard.
Clean cell.
Decrease/Increase
the sample
temperature.
[Note: If the unit still does not perform normally after the a ove
measures are taken, call Jenco Service Department.]
12

SPECIFICATIONS
Display Range
Resolution
Accuracy
0.0 to 475.0uS/cm 0.1uS/cm
Conductivity 475 to 4750uS/cm 1uS/cm ±0.5% Full Scale
K=0.475 4.75 to 47.50mS/cm 0.01mS/cm
47.5 to 200.0mS/cm 0.1mS/cm
Conductivity 0.00 to 99.99uS/cm 0.01uS/cm ±0.5% Full Scale
K=0.1 100.0 to 200.0uS/cm 0.1uS/cm
Salinity
Temperature
0.0 to 70.0ppt
-10.0 to 90.0 °C
0.1ppt
0.1 °C
±0.2% Full Scale
±0.2°C or ±0.4% Full Scale,
whichever is greater.
Reference Temperature
Temperature Coefficient
Cell Constant
TDS Constant Range
Power
Calibration Back-up
Datalogging capabilities
15.0 to 25.0 °C
0.0% to 4.0%
Four-wire cell: K=0.475 and two-wire
cell: K=0.1
0.30 to 1.00
9Volt attery
EEPROM
50 data sets
Automatic
function
shut off 30 minutes of non-use
Audio Feedback
Display(Conductivity/
Salinity /TDS/mV : Temp)
All Touch Keys
12mm : 8mm high LCD
Ambient
Range
Temperature 0 to 50 °C
Relative Humidity
Case
Dimensions (W x D x H)
Weight
At 90% RH
IP65 waterproof
70mm x 198mm x 37mm
260 grams
(Batteries included)
13

WARRANTY
Jenco warrants this product to e 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 een
the result of a use or misuse, within the year period, please
return-freight-prepaid and the correction of the defect will e made
free of charge. If you purchased the item from our Jenco
distri utors and it is under warranty, please contact them to notify
us of the situation. Jenco Service Department alone will
determine if the product pro lem is due to deviations or customer
misuse.
Out-of-warranty products will e repaired on a charge asis.
RETURN OF ITEMS
Authorization must e o tained from one of our representatives
efore returning items for any reason. When applying for
authorization, have the model and serial num er handy, including
data regarding the reason for return. For your protection, items
must e carefully packed to prevent damage in shipment and
insured against possi le damage or loss. Jenco will not e
responsi le for damage resulting from careless or insufficient
packing. A fee will e charged on all authorized returns.
NOTE: Jenco reserves the right to make improvements in design,
construction and appearance of our products without notice.
14

Jenco Instruments, Inc.
7968 Arjons Drive, Suite C San
Diego, CA 92126 USA
TEL: [phone]
FAX: [phone]
E-Mail: [e-mail]; [e-mail]
We site: www.jencoi.com
Jenco Electronics Inc.
1F., NO. 11, Lane 370, Sec. 6, Zhongxiao E. Rd. Nangang Dist.,
Taipei, Taiwan
TEL: [phone] FAX:
886-2-2782-3234
Shanghai Jenco Instruments, Ltd.
18 Wang Dong Zhong Road
Sijing Town, Songjiang
Shanghai, China
TEL: [phone]
FAX: [phone]
E-Mail: [e-mail]
We site: www.jenco.com.cn
15

16