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HYDROS 21 Tech Specs
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Technical Specifications
Measurement Specifications
Water Depth
Range:
0.0000 – 10000.0000 mm
Resolution:
1.0000 mm
Accuracy:
±0.25% of full scale at 20 °C
NOTE:
Depth measurement accuracy assumes no abrupt temperature variations.
Temperature
Range:
-40 to +60 °C
Resolution:
0 °C
Accuracy:
±1 °C
NOTE:
The pressure transducer may be damaged or destroyed if frozen in ice. Remove the sensor if the water temperature could drop below 0°C (32 °F).
Bulk Electrical Conductivity (EC)
Range:
1.0000 – 120.0000 dS/m
Resolution:
0.0010 dS/m
Accuracy:
±0.01 dS/m or ±10%, whichever is greater
NOTE:
The EC measurement is corrected to a standard temperature of 25°C.
Communication Specifications
Output
DDI serial or SDI-12 communications protocol
Data Logger Compatibility
METER ZL6 data loggers and any data acquisition system capable of 4.0- to 15.0-VDC power and serial or SDI-12 communications
Physical Specifications
Dimensions
Length:
9.0000 cm (3.5 in)
Diameter:
3.4000 cm (1.3 in)
Operating Temperature Range
Minimum:
0 °C
Maximum:
60 °C
NOTE:
Sensors may be used at higher temperatures under certain conditions; contact Customer Support for assistance.
Cable Length
10 m (standard)
20 m
40 m (maximum cable length)
Cable Diameter
6.00 ±0.25 mm (0.240 ±0.010 in) with minimum jacket of 0.031 in (0.80 mm)
Connector Types
Stereo plug connector or stripped and tinned wires
Stereo Plug Connector Diameter
3.5000 mm
Conductor Gauge
20-AWG signal and power / 21-AWG ground wire
Electrical and Timing Characteristics
Supply Voltage (power to ground)
Minimum:
4.0000 V
Typical:
NA
Maximum:
15.0000 V
Digital Input Voltage (logic high)
Minimum:
2.8000 V
Typical:
3.6000 V
Maximum:
5.0000 V
Digital Input Voltage (logic low)
Minimum:
-0.3000 V
Typical:
0.0000 V
Maximum:
0.8000 V
Digital Output Voltage (logic high)
Minimum:
NA
Typical:
3.6000 V
Maximum:
NA
Power Line Slew Rate
Minimum:
1.0000 V/ms
Typical:
NA
Maximum:
NA
Current Drain (during measurement)
Minimum:
2.5000 mA
Typical:
3.5000 mA
Maximum:
8.0000 mA
Current Drain (while asleep)
Minimum:
NA
Typical:
0.3500 mA
Maximum:
NA
Power Up Time (SDI-12)
Minimum:
NA
Typical:
700 ms
Maximum:
750 ms
Power Up Time (DDI Serial)
Minimum:
52.0000 ms
Typical:
NA
Maximum:
100 ms
Power Up Time (SDI-12, DDI Serial disabled)
Minimum:
NA
Typical:
175 ms
Maximum:
200 ms
Measurement Duration
Minimum:
0.0000 ms
Typical:
450 ms
Maximum:
600.0000 ms
Other
Compliance
Manufactured under ISO 9001:2015
EM ISO/IEC 17050:2010 (CE Mark)
GSA
View GSA details
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