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HOBO® Energy Logger Pro Sensor Information

Various HOBO Energy Logger Pro Sensor Specifications

Temperature -- FlexSmart Temperature Sensor Information [51kb PDF]

Relative Humidity (RH) -- FlexSmart Humidity Sensor Information [6kb PDF]

Air/Water Pressure (Gage Pressure) -- Silicon strain pressure transducer, stainless steel construction for use with water or other compatible fluids. Accuracy is plus/minus 1 percent of range. The FlexSmart Analog Imput Module is required for measurements. FlexSmart Pressure Transducer Information [24kb PDF]

Electric Current
AC Current Probes — Split Core - opening style (split core) current transducers (CTs) with internal burden resistor. Provides safe, 333 mV AC output proportional to current. Accuracy is plus/minus one percent from 10 to 100 percent of rated current. The FlexSmart TRMS Module is required for current measurements.

AC Current Probes — Clamp On - AC current probes with 333 mV full-scale outputs can be used in place of split-core current transducers. Clamp-on probes also use the FlexSmart TRMS Module for input to the HOBO logger. FlexSmart Current Transformer Information [173kb PDF]

 Electrical Power -- AC WattHour Transducers (WattNode™) use industry-standard 333 mV toroidal or split-core CTS with burden resistors for safe and easy installation. Accurate within .045 percent of reading plus .05 percent of full-scale excluding CT accuracy. Range is 0.1 percent to 150 percent of full scale. Accuracy is reduced at inputs greater than 100 percent. FlexSmart WattHour Transducer Information [37kb PDF]

Test lead sets are available for use with the WattHour Transducer: both delta and wye configurations. The FlexSmart Pulse Input Adapter is required for AC WattHour Transducer.

Voltage -- AC Potential Transformers (PTs) are used to measure voltage in 50/60 Hertz AC electrical systems. Precision step-down transformer provides electrical isolation and a safe 333 mV AC full-scale output signal proportional to the high voltage input. Accuracy is plus/minus one percent from 0 to 100 percent of rated voltage. The FlexSmart TRMS Module is required for voltage measurements. FlexSmart Potential Transformer Information [42kb PDF]

General Signal Measurement -- The FlexSmart Analog Input Module is available for general signal measurement: 4 to 20 mA, 10v DC voltage measurement module, 5v DC voltage measurement and 20 mA DC current measurement.

Other Sensors -- Other ranges and types of sensors may be ordered to meet your specific monitoring needs. Please contact us [launch e-mail] regarding specific sensor information.

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Revised January 17, 2007
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