Horiba Scientific LAQUAtwin CA-11, Instruction Manual

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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
+
:
110
-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 :
waterquality@horiba.com
www.horiba-laqua.com