Campbell Scientific CS616 CS616 and CS625 Water Content Reflectometers - Page 9

Dimensions, Weight, Electrical Specifications

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CS616 and CS625 Water Content Reflectometers CS625 Compatibility Dataloggers: CR200X series CR200 series Probe-to-Probe Variability: ±0.5% VWC in dry soil, ±1.5% VWC in typical saturated soil Resolution: better than 0.1% volumetric water content Water Content Accuracy: ±2.5% VWC using standard calibration with bulk electrical conductivity ≤0.5 deciSiemen meter-1 (dS m-1) and bulk density ≤1.55 g cm-3 in measurement range 0% VWC to 50% VWC Precision: better than 0.1% volumetric water content 5.1 Dimensions Rods: Probe Head: 300 mm (11.8 in) long, 3.2 mm (0.13 in) diameter, 32 mm (1.3 in) spacing 85 x 63 x 18 mm (3.3 x 2.5 x 0.7 in) 5.2 Weight Probe (without cable): Cable: 280 g (9.9 oz) 35 g m-1 (0.38 oz per ft) 5.3 Electrical Specifications Output CS616: CS625: ±0.7 volt square wave with frequency dependent on water content 0 to 3.3 volt square wave with frequency dependent on water content Power: 65 mA @ 12 Vdc when enabled, 45 µA quiescent Power Supply Requirements: 5 Vdc minimum, 18 Vdc maximum Enable Voltage: 4 Vdc minimum, 18 Vdc maximum Maximum Cable Length: 305 m (1000 ft) Electromagnetic Compatibility: The CS616/CS625 is Œ compliant with performance criteria available upon request. RF emissions are below EN55022 limits if the CS616/CS625 is enabled less than 0.6 ms and measurements are made at a 1 Hz (1 per second) or slower frequency. The CS616/CS625 meets EN61326 requirements for protection against electrostatic discharge and surge. 3

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CS616 and CS625 Water Content Reflectometers
CS625 Compatibility
Dataloggers:
CR200X series
CR200 series
Probe-to-Probe Variability:
±0.5% VWC in dry soil, ±1.5% VWC in
typical saturated soil
Resolution:
better than 0.1% volumetric water content
Water Content Accuracy:
±
2.5% VWC using standard calibration with
bulk electrical conductivity
≤
0.5 deciSiemen
meter
-1
(dS m
-1
) and bulk density
≤
1.55 g cm
-3
in measurement range 0% VWC to 50% VWC
Precision
:
better than 0.1% volumetric water content
5.1
Dimensions
Rods:
300 mm (11.8 in) long, 3.2 mm (0.13 in)
diameter, 32 mm (1.3 in) spacing
Probe Head:
85 x 63 x 18 mm (3.3 x 2.5 x 0.7 in)
5.2
Weight
Probe (without cable):
280 g (9.9 oz)
Cable:
35 g m
–1
(0.38 oz per ft)
5.3
Electrical Specifications
Output
CS616:
±
0.7 volt square wave with frequency
dependent on water content
CS625:
0 to 3.3 volt square wave with frequency
dependent on water content
Power:
65 mA @ 12 Vdc when enabled, 45
µ
A
quiescent
Power Supply Requirements:
5 Vdc minimum, 18 Vdc maximum
Enable Voltage:
4 Vdc minimum, 18 Vdc maximum
Maximum Cable Length:
305 m (1000 ft)
Electromagnetic
Compatibility:
The CS616/CS625 is Πcompliant with
performance criteria available upon request.
RF emissions are below EN55022 limits if the
CS616/CS625 is enabled less than 0.6 ms and
measurements are made at a 1 Hz (1 per
second) or slower frequency. The
CS616/CS625 meets EN61326 requirements
for protection against electrostatic discharge
and surge.
3