Model H10C
Instruction Manual
Microprocessor based
Conductivity, TDS, Salinity, Temperature
Hand Held Meter
Electro-Chemical Devices, Inc.
1681 Kettering, Irvine, CA 92614 USA
Telephone: +1-949-336-6060
FAX: +1-949-336-6064
www.ecdi.com
Contents
General Introduction…………………………………. 2
Initial Inspection………………………………………… 2
Water Proof……………………………………………….. 2
Installing the Batteries……………………………….. 3
Display & Key Functions……………………………… 5
A. Display……………………………………….. 5
B. Keys………………………………………...... 6
Operational Procedures……………………………… 7
A. Preparing Standard Solutions……… 7
B. Calibration…………………………………… 7
C. Conductivity Measurements………. 9
Error Displays and Troubleshooting……………. 9
Specifications……………………………………………… 10
Warranty……………………………………………………… 11
2
General Introduction
Thank you for choosing the ECD Model 10C conductivity instrument.
The Model 10C is a precision tool for measuring conductivity,
salinity, TDS and temperature. A built-in microprocessor stores,
calculates and compensates for all parameters related to
conductivity and temperature determinations.
The H10C has an IP67 waterproof case. The mechanical keys are
highly reliable with tactile and audio feedback. This meter is
powered by four AAA-size alkaline batteries. The meter also displays
a “BAT” message when the batteries are in need of replacement. Recalibration 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 with user
prompts and mode indicators. The unit prompts the user through
calibrations and measurement procedures.
The Model H10C is available with a single four wire conductivity cell
that measures from 2 µS to 200 mS. Its features include automatic
conductivity ranging, automatic temperature compensation, long
battery life and50/60 Hz AC noise rejection. This unit is universal in
application and user friendly for field, industrial and laboratory
applications.
Initial Inspection
Carefully unpack the unit and accessories. Inspect for damages made
in shipment. If any damage is found, notify your ECD representative
immediately. All packing materials should be saved until satisfactory
operation is confirmed.
Waterproof
Though the Model H10C 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 may affect probe connections.
3
2. Wait for the unit and probe to dry completely before
resuming operation.
3. If the unit does not function correctly after steps1 and 2,
call ECD for possible repair or replacement (see Warranty).
Installing the Batteries
The Model H10 pH meter is packaged with 4 “AAA” alkaline
batteries required for operation. To insert the batteries into the
meter, follow the procedure outlined below.
1. Use a screw driver to remove the two screw and battery
cover to expose the battery compartment. (Figure 1)
2. Note the polarity and insert the batteries into the battery
compartment correctly.
3. Replace the battery 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 20 minutes of no key
activity.]
Figure 1
4
Displays and Key Functions
1. CONDUCTIVITY-
Displays when measuring
conductivity
8. CELL-
Indicates conductivity cell
constant value
2. BAT-
Low Battery Indicator
9. °C/%-
Displays during calibration:
℃: Indicates temperature
reference unit.
%: Indicates temperature
coefficient unit.
3. UNCOMPENSATED-
Distinguishes between
temperature compensated and
uncompensated readings
10. ppt-
Parts per thousand; indicates
salinity measurement.
4. MAIN DISPLAY-
Displays conductivity, salinity
and TDS numerical values
11. uS/mS-
Microsiemens or millisiemens,
indicates conductivity
measurement.
5. CAL-
Calibration mode indicator
12. g/L-
Grams/Liter; indicates TDS
measurement.
6. TDS-
Displays when Total Dissolved
Solids is being measured
13.Temperature and unit
display
7. Salinity-
Displays when salinity is being
measured
5
Keys
On/Off-
Powers on and shuts off the meter.
Mode-
Selects display mode. In normal operation, press Mode
to sequentially display compensated conductivity,
salinity, total dissolved solids (TDS) and uncompensated
conductivity. In calibration mode, this key exits the
current calibration and displays the next calibration
parameter.
Up/Down-
Increases or decreases the displayed value as desired
Cal-
In normal operation, changes the mode from Normal to
Calibration.
Enter-
In Calibration Set-up, press this key to save the current
parameter to memory.
OPERATIONAL PROCEDURES
A. 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 EC3840.
1. Standard solution of 1413uS at 25°C: Accurately weight
out 0.746 grams of research grade dried Potassium
Chloride (KCL). Dissolve in 1000ml of distilled water.
2. Standard solution of 12.90mS at 25°C: Accurately weight
out 7.4365 grams of research grade dried Potassium
Chloride (KCL). Dissolve in 1000ml of distilled water.
6
3. Standard solution of 111.9mS at 25°C: Accurately weight
out 74.264 grams of research grade dried Potassium
Chloride (KCL). Dissolve in 1000ml of distilled water.
[Note: You can store the remaining solution in a plastic container for
one week but the air space between the cap and the solution must
be kept to an absolute minimum. Storing the excess solution below
4°C can increase the storage life. If you have any doubt of the
accuracy of the stored solution, a fresh batch should be prepared.]
B. Calibration
Calibration setup contains five sections: TDS, Cell, Temperature
Coefficient, Temperature reference and Conductivity Calibration. To
access these sections:
1. Connect the conductivity probe, PN 2008210, to the unit
and turn the unit on. The screen will display CELL and the
cell constant of the conductivity probe.
2. Allow temperature reading to stabilize, press “Cal” key to
enter the calibration mode. CAL appears on the LCD. Press
“Mode” key to sequentially display the following sections:
[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
TDS is determined by multiplying conductivity (mS) 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 and 1.00. Press
“Enter” key to save the new value, or press “Mode” key to cancel
the change and display the CELL screen.
CELL
The second screen will display CELL and the current cell value. The
default cell value is 0.50 and is displayed in the lower right of the
screen. The unit allows a variance of +/-0.15 before displaying an
error message. The cell value can’t be adjusted at this screen;
calibrating conductivity is the only way to adjust the cell constant.
Press “Enter” key to reset the cell constant to 0.50 and display the
Temperature Coefficient screen.
[Note: Be certain to press “Enter” key to reset the cell constant to
0.50. If “Mode” key is pressed, the unit retains the previous cell
constant and calibrates from a value that is already offset.]
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Temperature Coefficient
The meter 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 and 4.00%. Press “Enter” key to save
the new value, or press “Mode” key to cancel the change and
display the Temperature Reference screen.
Temperature Reference
The unit uses the temperature reference value to calculate
temperature compensated conductivity. The default value is 25°C.
To change the temperature coefficient, use the up and down keys to
adjust the value between 15 and 25°C. Press “Enter” key to save the
new value, or press “Mode” key to cancel the change and display
the Conductivity Calibration screen.
Conductivity Calibration
1. Immerse the probe in a standard of known conductivity,
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.
2. Allow temperature to stabilize. The message “rAGE”
(range) may display briefly to indicate unit auto-ranging;
this is normal. After temperature stabilization, use the up
and down keys to adjust the conductivity value to that of
the conductivity standard at 25℃. Press “Enter” key to
calibrate. The unit beeps twice to indicate a successful
calibration, Then automatically switches to normal
operation mode.
C. 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. The message “rAGE” (range) may appear briefly on
the display indicate auto-ranging; this is normal. Allow
temperature to stabilize before taking measurements.
8
Error Displays and Troubleshooting
Main
Display
Secondary
Display
Possible
Cause
Corrective
Action
“over” during
Measurement
/
Conductivity >
200mS
Salinity >70 ppt
●Ensure the
probe is
immersed in the
solution.
●Allow
temperature
sensor to
stabilize.
“over” during
Calibration
/
Cell Constant or
calibration
solution out of
range
●Recalibrate
with correct
conductivity
standard
●Clean cell
“over” during
Measurement
Over
Temperature
> 90°C
Decrease the
sample
temperature
undr
Temperature
< -10°C
Increase the
sample
temperature
9
Display
Range
Resolution
Accuracy
Conductivity
0.0 to 499.9uS/cm
500 to 4999uS/cm
5.00 to 49.99mS/cm
50.0 to 200.0mS/cm
0.01uS/cm
1uS/cm
0.01mS/cm
0.1mS/cm
±1% of reading
+2uS/cm
±1% of reading
+5uS/cm
±1% of reading
+0.05mS/cm
±2.5% of reading
+ 0.5mS/cm
Salinity
0.0 to 70.0ppt
0.1ppt
±0.2% Full Scale
Temperature
-10.0 to 90.0 °C
0.1 °C
±0.2°C or ±0.4%
Full Scale,
whichever is
greater.
Reference Temperature
15.0 to 25.0 °C
Temperature Coefficient
0.0% to 4.0%
Cell Constant
0.5 ± 0.15
TDS Constant Range
0.30 to 1.00, default at 0.65
Power
Four “AAA” Batteries
Calibration Back-up
EEPROM
Audio Feedback
All Touch Keys
Display
11mm : 7mm high LCD
Ambient Temperature
0 to 50 °C
Relative Humidity
up to 90%
Case
IP67 water tight case
Dimensions
75mm x 157mm x 35mm
Weight
230 grams(Batteries included)
Specifications
10
Warranty
Electro-Chemical Devices, Inc. (ECD) warrants all products it
manufactures to be free from defect in materials and factory
workmanship, and agrees to repair or replace any product that fails
to perform, as specified, within one (1) year after date of shipment.
This warranty shall not apply to any product that has been:
1. Subjected to misuse, negligence or accident;
2. Connected, installed, adjusted or otherwise used not in
accordance with the instructions furnished by ECD;
3. Repaired, modified or altered by persons not authorized
by ECD, resulting in injury to the performance, stability or
reliability of the product.
This warranty is in lieu of any other warranty, expressed or implied.
ECD reserves the right to make changes in the design or construction
of its products at any time, without prior notification, and without
incurring any obligation to make any changes in previously delivered
products.
Seller’s sole liabilities and the buyer’s sole remedies under this
agreement shall be limited to a refund in the purchase price, or at
ECD’s discretion, to the repair or replacement of any product that
proves, upon ECD’s examination, to be defective, when returned to
the factory, transportation prepaid by the buyer, within one (1) year
of the product’s original shipment date. Seller shall not be liable for
damages consequential or incidental to defects in any product, for
failure of delivery in whole or in part, for injuries resulting from its
use, or for any other cause.
This warranty and the writing attached constitute the full
understanding of seller and the buyer, and no terms, conditions,
understanding, or agreement purporting to modify or vary the terms
hereof shall be binding unless hereafter made in writing and signed
by an authorized official of Electro-Chemical Devices, Inc.
This warranty does not cover pH, ORP or Specific Ion measurement,
reference or combination electrodes or electrode cartridges that
have been commissioned in service.
If service or repair is required, please obtain the serial number(s) or
sales order number of the product(s) in question and contact ECD’s
Service Department at: +1-800-729-1333 (USA/Canada) or +1-949336-6060
11
1681 Kettering, Irvine, CA USA
+1 949 336-6060 FAX +1 949 336-6064
www.ecdi.com
Manual H10C A1912
12
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