Climate Monitoring System

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Climate Monitoring

The monitoring of climatic conditions such as temperature, relative humidity, dewpoint and moisture in industry is often vital to the success of the application of a coating. These parameters determine both the conditions for the application of the coating, and the resulting quality and performance of the coated product.

In the protective coatings industry, moisture can form on the surface when the surface temperature is low enough to cause condensation from the atmosphere. The dewpoint temperature (Td) is the point at which this occurs.

Monitoring the surface tempearte (Ts) realtive to the air temperature (Ta) and its relative humidity (%RH) allows the dewpoint temperature to be calculated and compared to the surface temperature.  This difference in temperature (TΔ) is the key parameter dictating when it is safe to apply the coating.

The temperature of the coating material is also important as temperature affects the coating′s shelf life, viscosity and its application characteristics.

The continuous monitoring of the climatic conditions during the cure process (drying) is also required.  If the temperature is too high, the coating can dry too quickly, leading to surface defects. If the temperature is too low, the cure time is extended, leading to delays in applying a further coat, other types of surface defects may affect the further coat, such as amine blush.

The cure process for powder coating requires a specific temperature to be achieved for a specific period.  Monitoring the oven profile allows the user to ensure that the product is brought to the appropriate temperature and held at that temperature for the specified time.  If the oven or product is too hot, the coating can burn, if it is too cold, the coating does not cure, leading to poor adhesion and appearance.

The presence of moisture within a material will result in poor adhesion, premature coating failure and poor appearance. For example, applying a powder coating to a damp wooden panel will cause steam to be created when the panel passes through the curing oven, thus causing damage to the coating.

Elcometer offer a complete range of dewpoint and relative humidity meters, thermometers, digital thermometers, hygrometers, dataloggers, moisture meters and anemometers to monitor climatic conditions.

 

Elcometer 319 Dewpoint Meter

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This rugged dew point meter is designed to measure and record all relevant climatic parameters required to determine whether the conditions are suitable for painting. The Elcometer 319 dewpoint meter can be used as a hand-held gauge or a stand alone data logger – ideal for monitoring climatic conditions over a period of time.

  • Integrated magnets allow remote data monitoring on steel substrates
  • Store 25,000 records in up to 999 batches
  • USB and Bluetooth data output to a PC or PDA
  • Dustproof and waterproof gauge with fully sealed sensors (equivalent to IP66)
  • Visual and audible indication of user defined limits against any or all parameters
  • Easy to use, intuitive multi-lingual menu structure
  • A hand-held Dewpoint meter with manual and interval data logging in one gauge
  • Large, customer definable illuminated display operates over the full temperature range
  • Measure and record climatic parameters:
    • – Relative humidity
    • – Air temperature
    • – Surface temperature
    • – Dewpoint temperature
    • – TΔ (the difference between surface temperature and dewpoint)
    • – Dry Bulb temperature
    • – Wet Bulb temperature

 

Elcometer 309 Delta T Hygrometer

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Before painting, the coater must meet the coatings’ parameters. These are clearly specified on the paint manufacturer’s product data sheet.

Relative Humidity (RH) and Delta T (TΔ) are the two climatic values which are specified on data sheets.

The Elcometer 309 Delta T Hygrometer provides a simple and fast measurement of these two critical characteristics.

  • 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): This is the amount of water vapour taken up by air. Expressed as a percentage, RH is dependent on the air temperature. Typical maximum RH values specified by paint manufacturers are between 75% and 85%.

 

Elcometer 308 Hygrometer

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Before painting it is necessary to check that the climatic conditions are suitable for the coating being applied. These are clearly specified on the paint manufacturer’s product data sheet.

Surface temperature (Ts) and Relative Humidity (%RH) are two key climatic values which are specified on many data sheets.

  • Relative Humidity (RH): This is the amount of water vapour taken up by air. Expressed as a percentage, RH is dependent on the air temperature. Typical maximum RH values specified by paint manufacturers are between 75% and 85%.

The Elcometer 308 digital hygrometer has been specifically designed for use in very hot climates where the surface temperature of the substrate can exceed the paint manufacturer’s recommended limits for successful painting Surface Temperature (Ts)

Painting outside recommended limits can have a detrimental affect on the performance and lifetime of the coating. The Elcometer 308 Hygrometer provides a simple and fast measurement of these two critical parameters.

 

Elcometer 116 Whirling & Sling Hygrometers

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The dewpoint calculator provides accurate values of Dewpoint and Relative Humidity (RH) from the wet and dry bulb temperatures measured by a Whirling or Sling Hygrometer.

 

Elcometer 113 Magnetic Thermometers

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The Elcometer 113 Magnetic Thermometer continuously indicates the surface temperature of steel and other magnetic material.

The thermometers are based on a bimetallic strip and therefore do not require batteries but do require time to adjust to the temperature.

Available in a number of scale ranges, the Elcometer 113 is also available as an economy version.

 

Elcometer 214 IR Digital Laser Thermometer

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The Elcometer 214 is a simple, easy-to-use, non-contact thermometer which safely and accurately measures surface temperature of non-reflective materials using infrared technology.

With a user switchable measuring range of -35°C to 365°C or -31°F to 689°F, a digital display of the temperature is produced in less than one second.

  • Non-contact technology with laser spot indicator
  • ºC / ºF user switchable
  • Fast, 1 second scanning of any surface
  • Measure objects as small as 25mm (1”)
  • Distance-to-Target Ratio of 8:1
  • Easy to read LCD display

The Elcometer 214 IR Digital Laser Thermometer has a D/T ratio (Distance-to-Target) of 8:1 and measures the emitted energy from a target spot one-eighth the size of the working distance.

As can be seen in the diagram, if the distance from the sensor optics to the target is 200mm (8″) for example, the diameter of the measured area is 25mm (1″).

 

Elcometer 212 Digital Pocket Thermometer with Surface Probe/ Liquid Probe

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The Elcometer 212 is a digital, pocket sized thermometer ideal for day to day use.

Incorporating a fast response stainless steel surface probe, the Elcometer 212 Digital Pocket Thermometer provides temperature readings in under four seconds.

Housed in a water resistant case with integrated rubber seals and a moulded flush window, preventing dirt and leaks damaging the LCD display, the Elcometer 212 pocket thermometer is ideal for use in the harshest of environments.

The probe conveniently folds back into the side of the instrument, preventing damage when not in use.

  • User switchable between ºC and ºF.
  • Resolution can be set to 0.1ºC (0.1ºF) or 1ºC (1ºF).
  • Auto-Off: The instrument will switch off automatically after 10 minutes of inactivity. This function can be disabled by the user if not required.

 

Elcometer 114 Dewpoint Calculator

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The Elcometer 114 Dewpoint Calculator provides accurate values of Dewpoint and Relative Humidity (RH) from the wet and dry bulb temperatures measured by a Whirling or Sling Hygrometer.

The range of the Elcometer 114 Dewpoint Calculator is -10°C to 50°C (14°F to 122°F) and has an accuracy of ±1% with respect to standard tables.