Kobold HND-C110 User manual
Operating Instructions
for
Hand-held Conductivity
Measuring Units
Model: HND-C110
HND-C110
page 2 HND-C110 K05/0422
1. Contents
1.Contents ........................................................................................................ 2
2.Note .............................................................................................................. 4
3.Instrument Inspection .................................................................................... 4
4.Regulation Use ............................................................................................. 4
5.Operating Principle ........................................................................................ 5
6.Electrical Connection .................................................................................... 5
6.1Mains operation: .................................................................................. 5
7.Operation / Configuration / Adjustments ....................................................... 6
7.1Safety Requirements ........................................................................... 6
7.2Connections ......................................................................................... 6
7.3Pop-up clip ........................................................................................... 7
7.4Pushbuttons ......................................................................................... 8
8.Start operation............................................................................................... 9
9.Principles of the measurements .................................................................... 9
9.1Basics about conductivity ..................................................................... 9
9.2Conductivity measurement .................................................................. 9
9.3Resistivity measurement .................................................................... 10
9.4TDS measurement ............................................................................. 10
9.5Salinity measuring ............................................................................. 11
9.6Electrodes / measuring cells .............................................................. 11
9.7Temperature compensation ............................................................... 11
10.Device Configuration ................................................................................... 12
11.Universal output .......................................................................................... 14
11.1The Serial Interface ........................................................................... 14
12.Adjustment of temperature input ................................................................. 15
13.Automatic adjustment/calibration of cell correction ..................................... 16
14.GLP ............................................................................................................. 17
14.1Calibration interval (C.Int) .................................................................. 17
14.2Calibration storage (rEAd CAL) ......................................................... 17
14.3Real Time Clock (“CLOC”) ................................................................. 17
14.4Accuracy Check / Adjustment Service ............................................... 18
14.5Error and System Messages .............................................................. 19
15.Maintenance ............................................................................................... 20
15.1Battery change ................................................................................... 20
16.Technical Information .................................................................................. 20
17.Order Codes ............................................................................................... 22
17.1Accessories ....................................................................................... 22
18.EU Declaration of Conformance ................................................................. 23
HND-C110
HND-C110 K05/0422 page 3
Manufactured and sold by:
Kobold Messring GmbH
Nordring 22-24
D-65719 Hofheim
Tel.: +49(0)6192-2990
Fax: +49(0)6192-23398
E-Mail: [email protected]
Internet: www.kobold.com
HND-C110
page 4 HND-C110 K05/0422
2. Note
Please read these operating instructions before unpacking and putting the unit
into operation. Follow the instructions precisely as described herein.
The instruction manuals on our website www.kobold.com are always for currently
manufactured version of our products. Due to technical changes, the instruction
manuals available online may not always correspond to the product version you
have purchased. If you need an instruction manual that corresponds to the
purchased product version, you can request it from us free of charge by email
([email protected]) in PDF format, specifying the relevant invoice number and
serial number. If you wish, the operating instructions can also be sent to you by
post in paper form against an applicable postage fee.
The devices are only to be used, maintained and serviced by persons familiar
with these operating instructions and in accordance with local regulations
applying to Health & Safety and prevention of accidents.
When used in machines, the measuring unit should be used only when the
machines fulfil the EC-machine guidelines.
3. Instrument Inspection
Instruments are inspected before shipping and sent out in perfect condition.
Should damage to a device be visible, we recommend a thorough inspection of
the delivery packaging. In case of damage, please inform your parcel service /
forwarding agent immediately, since they are responsible for damages during
transit.
Scope of delivery:
The standard delivery includes:
Hand-held Conductivity Measuring Units Model: HND-C110
4. Regulation Use
Any use of the Hand-held Conductivity Measuring Units, model: HND-C110,
which exceeds the manufacturer’s specification, may invalidate its warranty.
Therefore, any resulting damage is not the responsibility of the manufacturer. The
user assumes all risk for such usage.
HND-C110
HND-C110 K05/0422 page 5
5. Operating Principle
The KOBOLD hand-held conductivity measuring units of model HND-C110 is a
compact conductivity measuring units with solidly connected probes that can be
used universally. Due to the double display, both the conductivity and the
temperature value can be displayed simultaneously. The HND-C110 model offers
functions like minimum/maximum value memory, hold function, auto-off function,
and AutoRange (automatic adjustment of the optimum measuring range).
Due to the high temperature dependency in conductivity measurement, the
manual measuring unit has automatic temperature compensation.
With the improved unit HND-C110, the determination of resistance, salinity and
TDS are also part of the scope of functions.
6. Electrical Connection
6.1 Mains operation:
When using a power supply unit please note that operating voltage has to be 10.5
to 12 VDC. Do not apply over-voltage!! Simple 12 V-power supply units often have
excessive no-load voltage. We, therefore, recommend using regulated voltage
power supply units. Trouble-free operation is guaranteed by our power supply
HND-Z002. Prior to connecting the plug power supply unit with the mains supply
make sure that the operating voltage stated at the power supply unit is identical to
the mains voltage.
HND-C110
page 6 HND-C110 K05/0422
7. Operation / Configuration / Adjustments
7.1 Safety Requirements
This device has been designed and tested in accordance with the safety
regulations for electronic devices. However, its trouble-free operation and
reliability cannot be guaranteed unless the standard safety measures and special
safety advises given in this manual will be adhered to when using the device.
1. Trouble-free operation and reliability of the device can only be guaranteed
if the device is not subjected to any other climatic conditions than those
stated under chapter 16 Technical Data.
2. If the device is transported from a cold to a warm environment
condensation may cause a failure of the instrument. In such a case make
sure the device temperature has adjusted to the ambient temperature
before trying a new start-up.
3. If the device is to be connected to other devices (e.g. via serial interface)
the circuitry has to be designed most carefully. Internal connection in third
party devices (e.g. connection GND and earth) may result in not-
permissible voltages impairing or destroying the device or another device
connected.
Warning: If device is operated with a defective mains power
supply (short circuit from mains voltage to output voltage) this
may result in hazardous voltages at the device (e.g. sensor
socket, serial interface).
4. If there is a risk whatsoever involved in running it, the device has to be
switched off immediately and to be marked accordingly to avoid re-starting.
there is visible damage to the device
the device is not working as specified
the device has been stored under unsuitable conditions.
In case of doubt, please return the device to manufacturer for repair or
maintenance.
7.2 Connections
Interface: Connection for electrically isolated interface
adaptor (accessories: HND-Z031)
Electrode: cable gland for fixed conductivity electrode
The mains socket is located at the left side of the instrument.
HND-C110
HND-C110 K05/0422 page 7
7.3 Pop-up clip
Handling:
- Pull at label “open” in order to swing open the pop-up clip.
- Pull at label “open” again to swing open the pop-up clip further.
Function:
- The device with a closed pop-up clip can be plainly laid onto a table or attached
to a belt, etc.
- The device with pop-up clip at position 90° can be set up on a table, etc.
- The device with pop-up clip at position 180° can be suspended from a screw or
the magnetic holder
HND-C110
page 8 HND-C110 K05/0422
7.3.1 Displays
7.4 Pushbuttons
HND-C110
HND-C110 K05/0422 page 9
8. Start operation
Turn device on via key.
After segment test the device displays some information on its
configuration:
if cell correction scale was changed (cell correction scale unequal
1.000) (see chapter 10 Automatic adjustment/calibration of cell
correction)
if zero point or slope correction is active
(see chapter 12 Adjustment of temperature input)
After that the device is ready for measuring.
9. Principles of the measurements
9.1 Basics about conductivity
Definition of conductivity γ: The ability of a material to conduct electric current:
l: length of the material diameter measured resistance
A: diameter
R: measured resistance
Unit common for liquids: and
The conductivity is the reciprocal value of the resistivity.
(The conductance is the reciprocal value of the measured resistance R)
9.2 Conductivity measurement
The conductivity measurement is a rather uncomplicated measurement. The
standard electrodes are stable for a long time if used correctly and can be
adjusted by an integrated Cal-function.
Measuring ranges: 0.0 – 200.0 µS/cm
0 - 2000 µS/cm
0.00 – 20.0 mS/cm
0.0 – 200.0 m
If the range selection is set to „Auto Range“, the range with the best resolution is
automatically selected. However, interface operation requires a manual/fixed
selection of the measuring range from the table above (No interface operation
with Auto-range!).
HND-C110
page 10 HND-C110 K05/0422
9.3 Resistivity measurement
The resistivity is the reciprocal value of the conductivity and the device displays it
in kOhm•cm.
Measuring ranges: 0.000 – 2.000 kOhm*cm
0.00 – 20.00 kOhm*cm
0.0 – 100.0 kOhm*c
If the range selection is set to „Auto Range“, the range with the best resolution is
automatically selected. However, interface operation requires a manual/fixed
selection of the measuring range from the table above (No interface operation
with Auto-range!).
9.4 TDS measurement
At the TDS (total dissolved solids) measurement the filtrate dry residue is
determined by means of the conductivity and a conversion factor (C.tdS). Well
suited for easy concentration measurements of e.g. salt solutions. The
determined value is displayed in mg/l.
Measuring ranges: 0,0 - 200,0 mg/l 0 – 2000 mg/l
Displayed value TDS = conductivity [in µs/cm, nLF-temp. comp. at 25°C] • C.tdS
(input at menu)
Approximately:
C.tdS
0.50 Monovalent salts with 2 ion t
y
pes
(
NaCl, KCl, etc.
)
0.50 Natural waters / surface waters, drinkin
g
wate
r
0.65-0.70 e.
g
. salt concentration of aqueous fertilizer solutions
Attention: This are only approximate values – good for estimations, but no precise
measurement.
For precise measurements the conversion value has to be determined for the
corresponding solution for the relevant concentration range.
This may be done by comparison with known reference solutions or by actually
evaporating a certain amount of solution with determined conductivity and
subsequent weighing of the dry residue.
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