CODE: GZ0000472457
March, 2017
LAQUAtwin series (EC) Operation
1 2017 HORIBA Advanced Techno Co., Ltd.
Instruction Manual (Operation)
COMPACT WATER QUALITY METER
LAQUAtwin-EC-11, LAQUAtwin-EC-22,
LAQUAtwin-EC-33
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 the conditioning solu-
tion into the measurement cell.
2. Wait 10 min before use.
There is no need to switch the meter ON.
3. Clean the flat sensor with running water.
Model LAQUAtwin-EC- 11 22 33
Minimum sample volume 0.12 mL
Range and resolution (valid digits)
Conductivity
0 to 199 S/cm:
200 to 1999 S/cm:
2.00 to 19.99 mS/cm:
1 S/cm
1 S/cm
0.01 mS/cm
20.0 to 199.9 mS/cm: 0.1 mS/cm
TDS 0.0 to 99.9 ppm:
100 to 999 ppm:
1000 to 9990 ppm:
0.1 ppm
1 ppm
10 ppm
Calibration Up to 2 points
Up to 3 points
Accuracy
*1
2% full scale (for each range)
2% full scale (0 to 19.99 mS/cm)
5% full scale (20.0 to 199.9 mS/cm)
Temperature display 0 to 50.0C
Target Electrical conductivity
Measurement
principle
2 electrode bipolar AC
Titanium coated with Platinum black
Display Custom (monochrome) digital LCD with
backlight
Operating
environment
5 to 40C, 85% or less relative humidity
(no condensation)
Power CR2032 batteries (2)
Battery life Approx. 400 h continuous operation
*2
Outer dimen-
sions/mass
164 29 20 mm (excluding projections),
Approx. 45 g (excluding batteries)
Main function Temperature compensation (2%/C fixed),
waterproof
*3
, auto stable/auto hold, auto-
matic power OFF
*1 Accuracy is the closeness of agreement between
the measured value and actual value of the stan-
dard solution in the measurement of the same
standard solution as the one used for the calibra-
tion. Temperature during the calibration and mea-
surement is the same. The error of standard
solutions and rounding error (1 digit) are not
included.
*2 The life period if the meter is used in the backlight
off mode. If the backlight is used, battery life will
shorten.
*3 IP67: no failure when immersed in water at a
depth or 1 meter for 30 minutes.
Please note that the meter can not be used
underwater
Items Quantity
Sensor S070 1
Meter 1
Storage case 1
Batteries CR2032 2
Standard solution 1413 μS/cm 1
12.88 mS/cm 1
Pipette 1
Conditioning solution 1
Instruction manual (Operation) 1
Instruction manual (Before use) 1
Items Specifications Part No.
Sensor S070, COND 3200459672
Standard
solution
514-22, 1413 μS/cm 3999960110
514-23, 12.88 mS/cm 3999960111
Conditioning
solution
514-20 3999960114
1 Measurement cell
2 Protection cover
3 Lithium batteries
4 MEAS switch
5 ON/OFF switch
6 CAL switch
7 Waterproof gasket
8 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 sen-
sor tongue as shown.
1
2
3
4
5
8
6
7
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
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