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HOBO Pro RH and Temperature Data Logger

Accessories and Ordering Information

 Hobo H8 Pro Series RH and Temperature Data Logger
4 x 3.2 x 2"
(102 x 81 x 51mm)

This Onset PRO Logger Has Been Discontinued b y the Manufacturer. It has been replaced by the the PRO V2 Logger Line.

Two Channels: Temperature and Relative Humidity

The HOBO Pro RH and Temperature Data Logger is an outdoor datalogger with 1 channel for ambient temeperature  and 1 channel for relative humidity .  It will measure and record up to 65,291 readings.  It's reading rate is user selectable with sampling intervals being 0.5 seconds to 9 hours.

Features and Specifications

  • Weatherproof (RH sensor requires protection from rain or direct splashing - see Rain Shield )
  • High accuracy: ±0.3°F and ±3% RH
  • Capacity: 65,291 standard resolution measurements or 32,645 high resolution measurements
  • 0-100% RH range including condensing environments
  • User-selectable resolution on temperature measurements (8 or 12 bit)
  • User-selectable sampling intervals: 0.5 seconds to 9 hours, recording times up to 3 years
  • Readout and relaunch in the field with optional HOBO Shuttle (new H09-003-08 version required)
  • High speed data readout: full 64K in about 1 minute to either PC or HOBO Shuttle
  • Precision components eliminate the need for temperature calibration
  • Drop-proof to 5 feet
  • Mounting tabs, self tapping screws and hook/loop tape included
  • Programmable start time/date
  • Memory mode: stop when full
  • Automatic data archiving of 7 previous deployments
  • Nonvolatile EEPROM memory retains data
  • Blinking LED light confirms operation (visible through communication jack)
  • User-replaceable battery lasts 3 years
  • Battery check at launch
  • Operating range: -22°F to +122°F (-30°C to +50°C)
  • Time accuracy: ±1 minute per week at +68°F (+20°C)
  • Size/Weight: 4 x 3.2 x 2" (102 x 81 x 51 mm)/ approx. 3.7 oz. (104 gms)
  • Available in Intrinsically Safe version- H08-032-IS
  • Compatible with Keyspan USB 4-Port Serial Adapter for USB Connectivity
Measurement Specifications

Temperature (internal sensor)

  • Range: -22°F to +122°F (-30°C to +50°C)
  • Accuracy: ±0.33°F (±0.2°C) at +70°F in high resolution mode and ±0.7°F (±0.4°C) in standard resolution mode, see plot below
  • Resolution: 0.04°F (0.02°C) at +70°F in high resolution mode and 0.68°F (0.38°C) in standard resolution mode, see plot below
  • Response time in still air: 34 minutes typical

NOTE: White case reflects solar radiation. Accurate temperature measurements in direct sun require a radiation shield.

Temperature Accuracy and Resolution
High Resolution

Temperature Accuracy and Resolution

Temperature Accuracy and Resolution
Standard Resolution Mode

Relative Humidity
  • Range: 0% to 100% RH
  • Accuracy: ±3% (up to ±4% in condensing environments)
  • Response time: 30 minutes typical in still air
  • Sensor operating environment: +32°F to +122°F (0°C to +50°C)
  • Drift: 1% per year (typical), factory tune-up available

NOTE: RH sensor is designed for use in outdoor environments with cyclical high- and low-humidity level. Intermittent condensation permitted only when temperatures are less than 30°C (86°F). Operation outside stated limits, or repeated sensor saturation, will lead to premature sensor failure. RH sensor requires protection from rain, splashing, mist, and airborne chemicals such as salt and ammonia.

Intrinsically Safe Version

There is an intrinsically safe version of the HOBO PRO RH/Temp available for use in monitoring conditions in hazardous locations where combustible dust or gas may be a concern. This IS version provides performance identical to the specifications of the standard logger.

Intrinsically Safe Rating of H08-032-IS:
IS, Class I, II, Division 1, Groups A-G, Temperature Code T4 (≤135°C); NI, Class I, Division 2, Groups A-D, Temperature Code T4 (≤135°C); S, Class II, Division 2, Groups F and G as specified in the US Electric Code and approved by Factory Mutual.
Software and Accessories
  • BoxCar Pro Software and Cable Kit
  • BoxCar Software and Cable Kit
  • HOBO Shuttle (optional)

NOTE: A BoxCar Pro or BoxCar starter kit is required to operate any of the H8 Family loggers. Each Box Car starter kit includes software, PC interface cable and software manual.

 

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