Specifications - Horiba Scientific LAQUAtwin B-74 Series Manual

8.2

Specifications

Model
Measurement principle Ion electrode method
Minimum sample
volume
Measurement
range
NO
Display range
Range and
resolution (valid digits)
Calibration
Accuracy
Display
Operating
temperature/humidity
Power
Battery life
Main materials
Outer dimensions/
mass
Main functions
*1 0.05 mL or more if the sampling sheet B is used.
*2 Only for the sample extracted in the proportion of 1 part of soil to 5 of water.
*3 When the measured value is out of the measurement range, the displayed
value blinks. It should be used only as a guide.
*4 Selectable between one-point and two-point calibrations.
*5 Repeatability in measurement of a standard solution after calibration using the
same standard solution
*6 IP67: no failure when immersed in water at a depth of 1 meter for 30 minutes.
But the product cannot be used underwater.
B-741
(for crops)
0.3 mL or more
100 ppm (mg/L) to
-
NO
3
9900 ppm (mg/L)
23 ppm (mg/L) to
-
-N
3
2200 ppm (mg/L)
0 ppm to
9900 ppm
(1) 0 ppm to 99 ppm: 1 ppm
(2) 100 ppm to 990 ppm: 10 ppm
(3) 1000 ppm to 9900 ppm: 100 ppm
Two-point
±10% of reading value
Custom (monochrome) digital LCD
5C to 40C,
85% or less in relative humidity (no condensation)
CR2032 batteries (2)
Approx. 400 hours in continuous use
ABS epoxy
164 mm  29 mm  20 mm (excluding projections)
Approx. 50 g (without batteries)
Auto range change, temperature compensation (2%/C
fixed), waterproof
B-742
(for soil)
*1
30 ppm (mg/L) to
600 ppm (mg/L)
6.8 ppm (mg/L) to
140 ppm (mg/L)
3.4 kg/10a to
68 kg/10a
0 ppm to
*3
800 ppm
*4
*5
*6
, reading locking, automatic power OFF
31
B-743
(for general use)
62 ppm (mg/L) to
6200 ppm (mg/L)
14 ppm (mg/L) to
1400 ppm (mg/L)
*2
0 ppm to
*3
9900 ppm
*3