horiba LaquaTwin B-771, Инструкция по эксплуатации, Страница: 32 / 34

22
8.2 Specifications
Model B-771
Measurement principle 2 AC bipolar method
Minimum sample volume 0.12 mL or more
Measurement
range
Conductivity 0 mS/cm to 19.9 mS/cm, 0 S/m to 1.99 S/m
Salt 0% to 1.1%
TDS 0 ppm to 9900 ppm
Display range
0 mS/cm to 199 mS/cm (0 S/m to 19.9 S/m)
*1
Range and
resolution (valid digits)
(1) 0
P
S/cm to 199
P
S/cm: 1
P
S/cm
(2) 0.20 mS/cm to 1.99 mS/cm: 0.01 mS/cm
(3) 2.0 mS/cm to 19.9 mS/cm: 0.1 mS/cm
(4) 20 mS/cm to 199 mS/cm: 1 mS/cm
Calibration
Two-point
*2
Accuracy
±2% full scale ±1 digit (for each range)
*3
Display Custom (monochrome) digital LCD
Operating temperature/
humidity
5
q
C to 40
q
C,
85% or less in relative humidity (no condensation)
Power CR2032 batteries (
u
2)
Battery life Approx. 400 hours in continuous use
Main materials ABS epoxy
Outer dimensions/
mass
164 mm × 29 mm × 20 mm (excluding projections)
Approx. 45 g (meter only, without batteries)
Main functions
Temperature conversion (2%/
q
C fixed), waterproof
*4
,
reading locking, automatic power OFF
*1 When the measured value is out of the measurement range, the displayed
value blinks. It should be used only as a guide.
*2 Selectable between one-point and two-point calibrations.
The high conductivity standard solution (12.9 mS/cm) is sold separately.
*3 Repeatability in measurement of a standard solution after calibration using the
same standard solution.
(1) ±5
P
S/cm (0
P
S/cm to 199
P
S/cm), (2) ±0.05 mS/cm (0.20 mS/cm to 1.99
mS/cm), (3) ±0.5 mS/cm (2.0 mS/cm to 19.9 mS/cm), (4) ±5 mS/cm (20 mS/
cm to 199 mS/cm)
*4 IP67: no failure when immersed in water at a depth or 1 meter for 30 minutes.
But the product can not be used underwater.