CODE: GZ0000460289
March, 2017
LAQUAtwin series (Ca
2+
) Operation
1
2017 HORIBA Advanced Techno Co., Ltd.
Instruction Manual (Operation)
COMPACT WATER QUALITY METER
LAQUAtwin-Ca-11
Specifications
Items in package
Consumable parts sold separately
Part Names
Note
Press the switches 0.5 seconds or more unless
otherwise specified.
Initial Setup
Attaching/detaching the sensor
Note
Be careful not to twist the waterproof gasket.
Inserting/removing batteries
Electrode conditioning
Note
Before using the sensor for the first time or
after several days of disuse, perform electrode
conditioning.
Perform calibration after electrode condition-
ing.
1. Place some drops of 2000 ppm standard
solution to the flat sensor.
2. Wait a few hours before use.
There is no need to switch the meter ON.
3. Clean the flat sensor with running water.
Model
LAQUAtwin-Ca-11
Target
Calcium ion (Ca
2+
)
Measurement principle
ISE method
Minimum sample volume
More than 0.3 mL
*1
Measure-
ment range
4 to 9900 [unit: ppm or mg/L]
Resolution
(default)
Display range: Resolution
4 to 99:
1
100 to 990:
10
1000 to 9900: 100
[unit: ppm or mg/L]
Calibration
Up to 2 points
Default: 150 ppm and 2000 ppm
Accuracy
*2
±20% of reading value
Waterproof
IP67 (no failure when immersed in
water at a depth of 1 m for 30 min)
*3
Display
Custom (monochrome) digital LCD
with backlight
Operating
environment
Temperature: 5
C to 40
C
Humidity: 85% relative humidity or
less (no condensation)
Power
CR2032 batteries (
2)
Battery life
Approx. 400 h continuous operation
(backlight off mode)
*4
Material
ABS epoxy (main material)
Dimensions 164
29
20 mm (excluding projec-
tions)
Mass
Approx. 50 g (excluding batteries)
*1 0.05 mL or more if sampling sheet B (sold sepa-
rately) is used.
*2 The closeness of agreement between a mea-
sured value and an actual value of standard solu-
tion after two-point calibration using 150 ppm and
2000 ppm standard solutions.
The standard solution used for the later cali-
bration was measured after two-point calibra-
tion at 150 ppm and 2000 ppm.
The calibration and measurement are per-
formed at the same temperature.
The error of standard solutions and rounding
error (
1 digit) are not included.
*3 The meter cannot be used underwater.
*4 When the backlight is used, battery life will
shorten.
Items
Quantity
Sensor
S050
1
Meter
1
Storage case
1
Batteries
CR2032
2
Standard solution
150 ppm
1
2000 ppm
1
Pipette
1
Sampling sheet B (5 sheet-pack)
1
Instruction manual (Operation)
1
Instruction manual (Before use)
1
Items
Specifications
Part No.
Sensor
S050, Ca
2+
3200459869
Standard
solution
Y051L, Ca
2+
150 ppm
3200457728
Y051H, Ca
2+
2000 ppm 3200457727
Sampling
sheet B
Y046, 100 sheet-pack
3200053858
1
Flat sensor
2
Light shield cover
3
Liquid junction
4
Response mem-
brane
5
Lithium batteries
6
MEAS switch
7
ON/OFF switch
8
CAL switch
9
Waterproof gasket
10 Strap eyelet
Attaching the sensor
1. Power OFF the meter.
2. Confirm that the waterproofing gasket is
clean and undamaged.
3. Slide the sensor
onto the meter so
that catch "A" on the
back of the meter fits
into hole "a" on the
sensor tongue as
shown.
1
2
3
4
5
6
7 10
8
9
a
A
Waterproof
gasket
Detaching the sensor
1. Power OFF the meter.
2. Lift the sensor tongue
tip and slide the sensor
a little away from the
meter.
3. Pull out the sensor all the way from the
meter.
Inserting the batteries
1. Power OFF the meter.
2. Slide both batteries into
the battery case as
shown.
Be sure to use two
CR2032 batteries, and put
them with the plus sides
(+) upwards.
Removing the batteries
1. Power OFF the meter.
2. Use a ball-point pen or
other tool to pry the batter-
ies out from the clips as
shown.
Battery
Battery clip
