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HOBO Energy Logger

The HOBO Energy Logger is a 15 channel indoor data logger with the ability to measure and record almost any environmental condition using the required FlexSmart Modules.

The Energy Logger allows you to measure and record: 
>> AC/DC Current, AC/DC Voltage,4-20mA
>> Power, Kilowatts, Kilowatt Hours
>> Pressure (Differential, Barometric, Gauge)
>> Pulse and Analog Inputs
>> Wind, Rain, Light, Carbon Dioxide
>> Temperature and Relative Humidity
>> and more...

Included with each HOBO Energy Logger
>> User Guide 
>> (8) 1.5V Batteries
>> Miniature Slotted Screwdriver
>> Blank Label
>> Rubber Feet

HOBO Energy Logger Features

  • Flexible Expansion for up to 3 FlexSmart Modules and 6 Smart Sensors
  • Automatic Detection of Smart Sensors by logger
  • Digital Connection of Smart Sensors to logger for Accurate, Reliable Data Collection and Storage
  • Multiple Internal and External Power Sources Available for Long-Term Usage
  • User-Configurable Sensor Excitation Power and Warmup using Analog Module (#S-FS-CVIA)
  • Optional Data Shuttle Available to Collect Data in Remote Areas
  • Requires HOBOware Software and USB Kit (PC and MAC Versions)

HOBO Energy Logger Specifications

Data Storage Capacity 512K Maximum Storage - Number of Samples Dependant on External Sensors and FlexSmart Modules
Sampling Rate 1 Second to 18 Hours
(2-Second Minimum for #S-FS-TRMSA operation)
Sensor Excitation 12 Volts DC at 200 mA total, with User-Programmable Warmup Time on a per-Channel Basis
Logging Modes Immediate, Timed Delay, or Push-Button Start Options
Memory Modes Stop When Full; Wrap When Full
LED Indicators Green: Logging or Standby
Red: Low Battery, Storage or Sensor Fail
Sensor Inputs 3 FlexSmart multi-Channel Modules and up to 6 Smart Sensors
Sensor Connectors 6 RJ-12 Smart Sensor Jacks and 3 FlexSmart Module Slots
Communications Type RS-232 Serial via 3.5mm Serial Port or/and 9-pin D-Sub Connector
Communications Mode Current Readings while Logging; Read Out While Logging; Read Out When Stopped
Operating Range Alkaline Battery: -20C to 50C (-4F to 122F)
Lithium Battery: -40C to 60C (-40F to 140F)
Battery Life 1 Year Typical Use ( up to 75 mA excitation with 10-minute or longer logging interval and 1-second warmup-time)
Battery AA Alkaline Batteries (Included)
External Power 13.6 VDC Regulated AC Wall Adapter Connector
9-12 VDC Regulated Wall Adapter (Remove Batteries)
Time Accuracy 0 to 2 Seconds for first data point and ±5 Seconds per Week at 25°C (77°F)
Standards Compliance CE
Weight 435g (15.23 oz) with Batteries
Dimensions 15.6cm x 8.4cm x 4.6cm (6.13" x 3.31" x 1.81")

NOTE: 1 FlexSmart Analog Module or TRMS Module is Required

The FlexSmart Modules are snap-in signal conditioning units that convert signals from nearly any type of sensor.

FlexSmart Analog (CVIA) Module (#S-FS-CVIA) 

>> Flexible DC Signal-Conditioning Module
>> Accepts 2 Channels
>> Input Protection and Signal Filtering
>> Excitation Power to wide range of sensors

Input Channels 2, Single-Ended
Field Wiring 2 or 3 Wire Screw terminals on Detachable Terminal Block, 16 to 24 Gauge (AWG)
Input Range User-Configurable: 0 to 20 mA DC; 0 to 20 Volts DC
(Suitable for 2.5, 5 and 10 Volt Sensors
Input Voltage Range 0 to 24 Volts DC
Input Current Range 0 to 24 mA DC
Minimum Current Source Impedance < 20 KOhms
Accuracy ± 0.25% of FSR from 50 mV to FSR
ADC Resolution 12 Bits
Standards Compliance CE
Power Requirements +3.3 Volts @ 3mA Active, 6 uA Sleep


>> 2 Channel Input Measurement Module
>> Compatible with Industry-standard Current and Potential Transformers
>> Input Range of 512 mV RMS Full Scale
>> Output Range of 333 mV RMS Full Scale

Input Channels 2
Field Wiring 2 Wire Screw Terminals
Range 5mV to 512mV
(Compatible with 333mV FS Output Sensors)
Maximum Input ± 1V
Minimum Input 5mV
Accuracy ± 0.3% of Reading; ± 0.5% FSR
Resolution 15 Bits
Standards Compliance CE

Description Part Number
HOBO U30 Shuttle U-DT-2
USB Serial Adapter CABLE-USB232
Mount Feet Kit A-H22-MOUNT-1
Din Mounting Feet Kit A-H22-DINMOUNT-1
H22 Onset Energy Logger Replacement Kit A-H22-SPARES-1
AA Batteries (Lithium) 4 Pack HWSB-LI
AC Power Adapter P-AC-1
1 to 2 Sensor Communication Adapter S-ADAPT


The Energy Logger allows you to monitor and record:
>> HVAC and HVAR
>> Energy Metering and Power Monitoring
>> Facility Monitoring
>> Industrial Machinery Monitoring and Motor Start-Up Analysis
>> Temperature and Humidity Monitoring
>> and alot more ....