Elcometer 309 Delta T Hygrometer

  • Protective Coatings
  • Industrial Finishing
309-Intro-Images_1
309-Intro-Images2_1

The Elcometer 309 Digital Delta T Hygrometer provides a simple and fast measurement of Delta T temperature and relative humidity

  • Summary
    • Summary

    • The Elcometer 309 Delta T Hygrometer provides a simple and fast measurement of the two critical climate parameters within coatings:

      • Delta T (TΔ): The difference between the surface temperature (Ts) and the dewpoint temperature (Td). When TΔ is less than 3ºC (5ºF) painting should not occur.
      • Relative Humidity (RH): Expressed as a percentage, RH is the ratio of the amount of water vapour actually held by the air compared to the maximum amount of water vapour the air could hold at a given temperature. Typical maximum RH values specified by paint manufacturers are between 75% and 85%.

      The Elcometer 309 Delta T Hygrometers include:

      • Rugged design: Suitable for use in extreme environments the Elcometer 309 digital hygrometer is dustproof and waterproof with fully sealed sensors.
      • High / Low Limits: Displayed on screen graphically as either (?) or (X) with flashing Red or Green LED’s to indicate pass or fail.
        • Delta T Temperature: TΔ is pre-set at >3ºC (>5ºF), the industry norm.
        • Relative Humidity: User definable upper limit can be set for RH.
      • Measurement Hold / Release function: With a single button press readings are ‘frozen’ on the screen.  These can then be recorded before, simply pressing the button again to ‘unfreeze’ the screen and then take further readings as necessary.
      • Backlight: Provides clearly lit information – ideal in dark or confined spaces.
  • Technical Information
    • Technical Specification
      Elcometer 309 Delta T Hygrometer
      Part Number Description Certificate
      G309----1 Elcometer 309 Delta T Hygrometer
      Basic Calibration Certificate supplied as standard
      Operating Range -20ºC to +80ºC (-4ºF to +176ºF)
      Surface Temperature (TS) -20ºC to +80ºC (-4ºF to +176ºF)
      Relative Humidity (RH) & Accuracy1 0% to 100% RH (±3%)
      (Default upper limit 75%, user adjustable)
      Resolution 0.1ºC (0.1ºF) / 0.1%
      Power Supply 2 x AA batteries or via USB Cable
      Battery Life Greater than 40 hours (Backlight off)
      Dimensions 180 x 75 x 35mm (7 x 3 x 1.4”)
      Weight 300g (0.66lb)
      Packing List Elcometer 309 Delta T Hygrometer, wrist strap, 2 x AA batteries, protective carry case/pouch with belt clip, RH probe calibration certificate and operating instructions.
      1 at 1m/s
      Basic Calibration Certificate supplied as standard.
  • Standards
    • Standards
      Elcometer 309 Delta T Hygrometer

      BS 7079-B4, ISO 8502-4

      Standards in grey have been superseded but are still recognised in some industries.

  • Downloads
    • Downloads
      • Elcometer 309 Delta T Hygrometer Instruction Manual

      • Elcometer 309 Delta T Hygrometer Datasheet

      • Elcometer 309 Delta T Hygrometer Declaration of Conformity

  • Part Numbers
    • Part Numbers
      Elcometer 309 Delta T Hygrometer
      • Elcometer 309 Delta T Hygrometer

        The Elcometer 309 Delta T Hygrometer provides a simple and fast measurement of the two critical climate parameters within coatings: Delta T (TΔ) & Relative Humidity (RH).

        • Part Number : G309----1
        • Certification : Basic Calibration Certificate
        • Part Number : G309----1C
        • Certification : Calibration Certificate
  • Accessories
    • Accessories
      Elcometer 309 Delta T Hygrometer
      • Part NumberT99921325
      • Part NumberT99916063
      • Part NumberT99921192
      • Part NumberTCAL-309F

Elcometer 309 Delta T Hygrometer

  • Protective Coatings
  • Industrial Finishing
309-Intro-Images_1
309-Intro-Images2_1

The Elcometer 309 Digital Delta T Hygrometer provides a simple and fast measurement of Delta T temperature and relative humidity

Summary

Elcometer 309 Delta T Hygrometer

The Elcometer 309 Delta T Hygrometer provides a simple and fast measurement of the two critical climate parameters within coatings:

  • Delta T (TΔ): The difference between the surface temperature (Ts) and the dewpoint temperature (Td). When TΔ is less than 3ºC (5ºF) painting should not occur.
  • Relative Humidity (RH): Expressed as a percentage, RH is the ratio of the amount of water vapour actually held by the air compared to the maximum amount of water vapour the air could hold at a given temperature. Typical maximum RH values specified by paint manufacturers are between 75% and 85%.

The Elcometer 309 Delta T Hygrometers include:

  • Rugged design: Suitable for use in extreme environments the Elcometer 309 digital hygrometer is dustproof and waterproof with fully sealed sensors.
  • High / Low Limits: Displayed on screen graphically as either (?) or (X) with flashing Red or Green LED’s to indicate pass or fail.
    • Delta T Temperature: TΔ is pre-set at >3ºC (>5ºF), the industry norm.
    • Relative Humidity: User definable upper limit can be set for RH.
  • Measurement Hold / Release function: With a single button press readings are ‘frozen’ on the screen.  These can then be recorded before, simply pressing the button again to ‘unfreeze’ the screen and then take further readings as necessary.
  • Backlight: Provides clearly lit information – ideal in dark or confined spaces.
Downloads
  • Elcometer 309 Delta T Hygrometer Instruction Manual

  • Elcometer 309 Delta T Hygrometer Datasheet

  • Elcometer 309 Delta T Hygrometer Declaration of Conformity

Technical Specification
Elcometer 309 Delta T Hygrometer
Part Number Description Certificate
G309----1 Elcometer 309 Delta T Hygrometer
Basic Calibration Certificate supplied as standard
Operating Range -20ºC to +80ºC (-4ºF to +176ºF)
Surface Temperature (TS) -20ºC to +80ºC (-4ºF to +176ºF)
Relative Humidity (RH) & Accuracy1 0% to 100% RH (±3%)
(Default upper limit 75%, user adjustable)
Resolution 0.1ºC (0.1ºF) / 0.1%
Power Supply 2 x AA batteries or via USB Cable
Battery Life Greater than 40 hours (Backlight off)
Dimensions 180 x 75 x 35mm (7 x 3 x 1.4”)
Weight 300g (0.66lb)
Packing List Elcometer 309 Delta T Hygrometer, wrist strap, 2 x AA batteries, protective carry case/pouch with belt clip, RH probe calibration certificate and operating instructions.
1 at 1m/s
Basic Calibration Certificate supplied as standard.
Standards
Elcometer 309 Delta T Hygrometer

BS 7079-B4, ISO 8502-4

Standards in grey have been superseded but are still recognised in some industries.

Part Numbers
Elcometer 309 Delta T Hygrometer
  • Elcometer 309 Delta T Hygrometer

    The Elcometer 309 Delta T Hygrometer provides a simple and fast measurement of the two critical climate parameters within coatings: Delta T (TΔ) & Relative Humidity (RH).

    • Part Number : G309----1
    • Certification : Basic Calibration Certificate
    • Part Number : G309----1C
    • Certification : Calibration Certificate
   
Accessories
Elcometer 309 Delta T Hygrometer
  • Part Number: T99921325
  • Part Number: T99916063
  • Part Number: T99921192
  • Part Number: TCAL-309F