Measurement
1. Open the sensor cover.
2. Rinse the sensor with DI – or tap
water.
3. Dry the sensor with a tissue
.
.
Rinse again with some of the next
standard solution for increased
accuracy
4. Cover the complete sensor with
sample solution.
5. Close the sensor cover.
6. Switch on the meter.
The meter will start measurement immediately. will
appear once the value is stable.
A.S. mode:
If the value changes disappears until
new stability is reached (continuous measurement)
A.H. mode:
Holds the last value in the display. Press
MEAS
to do another measurement.
Using Sampling Sheet B
Using this sheet, the sensor can
be covered with only 50 µL to
100 µL sample.
1. Take the sheet with tweezers
2. Wipe across the sample
3. Follow the steps for normal measurement.
Using Sampling Sheet B and holder
Tiny particles in samples (e.g. extract from soil)
influence the measurement result. Use the sampling
sheet holder cover and sampling sheet B to
counteract the influence.
1. Replace the sensor cover with the sheet holder
2. Open the sheet holder
3. Place a sampling sheet on the sensor
4. Close the sheet holder
5. Put a few drops of sample in the sheet holder
6. Follow the steps for normal measurement
View mV or Temperature
Only available in A.S. Stability mode, see Setting
Menu. From measurement:
1. Press
MEAS
to view temperature
2. Press
MEAS
again to view mV
3. Press
MEAS
again to view units
Reset to factory defaults
All settings will be reset to the factory default settings.
Calibration data will be deleted.
1. Power OFF the meter.
2. Simultaneously press and hold
MEAS
,
ON/OFF
and
CAL
keys (approx. 3 seconds).
3. Press
CAL
to confirm or
ON/OFF
to cancel
Maintenance and Storage
•
Clean the sensor after use with DI - or tap water.
•
Gently remove moisture from the sensor by
dapping with a tissue.
•
Close the sensor cap and slide cap when storing.
•
Sensor can be stored dry. Perform sensor
conditioning when the meter has be out of use for
a longer period.
•
Store at room temperature.
Specifications
Replacement sensors
Part
Art. number
Description
S022
3200459867
Sodium (Na) sensor for
B-722 and NA-11
S030
3200459868
Potassium (K) sensor
for B-731 and K-11
S040
3200459870
Nitrate (NO3) sensor for
B-74x and NO3-11
S050
3200459869
Calcium (Ca) sensor for
B-751 and CA-11
Standard solutions 6 x 14ml
Y022H *
3200457723
Na Sodium 2000ppm
Y022L *
3200457724
Na Sodium 150ppm
Y041
3200053433
NO3 Nitrate 5000 ppm
Y042
3200053514
NO3 Nitrate 300 ppm
Y043 *
3200053532
NO3 Nitrate 2000 ppm
Y044
3200053535
NO3 Nitrate 30 ppm
Y045 *
3200053536
NO3 Nitrate 150 ppm
Y031H *
3200457719
K Potassium 2000ppm
Y031L *
3200457720
K Potassium 150ppm
Y051H *
3200457727
Ca Calcium 2000ppm
Y051L *
3200457728
Ca Calcium 150ppm
Accessories
Y-011A
3014053435
Sampling sheet C - 5
Rolls, 11mm x 6m
Y046
3200053858
Sampling sheet B -
100pcs
Y048
3200459736
Sampling sheet holder
for LAQUAtwin series
Crop
Press
3200254910
Crop sap press
* Solutions are included with the meter.
Features for all meters
Measurement Principle
Ion Selective Electrode
Minimum Volume
0.3ml (0.05ml with sampling sheet B)
Resolution
0 to 99 ppm: 1 ppm
100 to 990 ppm: 10 ppm
1000 to 9900 ppm: 100 ppm
Calibration Points
Up to 2
Temperature Calibration
5 to 40.0 ºC
Temperature Display
0 to 50.0 ºC
Operating Temperature
5 to 40.0 ºC
Operating Humidity
85% or less relative humidity (no condensation)
Power
CR2032 batteries (2)
Battery Life
Approx. 400 hours in continuous use
Material
ABS epoxy
Dimensions
164 x 29 x 20 mm (excluding projections)
Mass
Approx. 55 g (including sensor and batteries)
Measurement modes
Auto Hold / Auto Stable Measurement
Automatic Power Off
After 8 minutes
Low Battery Indicator
•
IP67 Dust/Waterproof
•
Replaceable Sensor
•
Display
LCD with backlight
Warranty
Meter 24 months / sensor 6 months
Parameter
CALCIUM POTASSIUM SODIUM
NITRATE
Model
CA-11
K-11
NA-11
NO3-11
PART #
3200689161 3200689160 3200689159
3200689162
Range ppm /
mg/L
4 to 9900
2 to 9900 6 to 9900 NO3 / 1.4 to
2200 NO3-N
Range mmol/L
0.1 to 250
0.1 to 430
Range kg/10a
2 to 5000
0.7 to 1100
Accuracy
±20% of actual
value
±10% of actual value
Interfering ions
and selective
coefficients
Fe
2+
, Zn
2+
: 1
Fe
3+
: 10
Cu
2+
: 1 10
-2
(at 10
-3
mol/L
Ca
2+
)
Rb
+
: 1 10
-1
(at 10
-3
mol/L
K
+
)
K
+
, Rb
+
:
110
-2
(at 10
-
3
mol/L Na
+
)
I
-
: 10
NO
2-
: 7 10
-1
Cl
-
: 4 10
-2
Br
-
: 9 10
-1
(at 10
-3
mol/L NO
3-
)
pH range
4 to 12 pH (at
10
-3
mol/L Ca
2+
)
2 to 9 pH (at
10
-3
mol/L K
+
)
3 to 9pH (at
10
-3
mol/L
Na
+
)
3 to 8 pH (at 10
-3
mol/L NO
3-
)
Error Solution
Er1
The meter may be defective.
•
Reset to factory defaults
If resetting does not work the meter needs
to be replaced. Repair is not possible.
Er2
Internal board is defective.
•
Meter needs to be replaced, repair is not
possible.
Er3
Internal board is defective.
Meter needs to be replaced, repair is not
possible.
Er4
Calibration error
•
CAL
is pressed in mV mode.
•
Temperature offset is too large, wait
longer to perform temperature
adjustment.
Er4 +
blinks
Calibration error
•
Retry calibration
•
Ensure the standard solution complies
with the set values for LOW and HIGH
calibration points
•
Clean and recondition the sensor
•
Try new, fresh solutions
•
Clear Calibration data
•
Reset to factory defaults
If the above does not work, the sensor
might need replacement.
Or or
Ur
Over or Under Range: value is higher (Or)
or lower (Ur) than the meter’s limits
•
Measure a standard, if Or / Ur shows
again, the sensor needs to be replaced.
Tip
HORIBA UK Limited
Kyoto Close, Moulton Park,
Northampton NN3 6FL
Phone : 44 (0) 1604 542600
Fax : 44 (0) 1604 542696
Email :
Summary of Contents for LAQUAtwin CA-11
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