BRANNAN MARINE CATALOGUE - Flipbook - Page 16
Environmental and infrared instrumentation
Hygrometers
These instruments measure the amount of water vapour in the atmosphere, on a percentage
scale known as Relative Humidity (%RH). The difference between the “wet” and “dry” bulb
temperatures enables the %RH to be determined through the use of tables or a calculator.
Masons Hygrometer
White polypropylene case with water container and
wick. Supplied complete with calculator chart and
instructions to determine %RH. Replacement water
container pots and wick also available.
Range: -5 to +50°C&F or °C only
Dimensions: 310 x 77 x 32mm
IMPA code: 37 02 51
Product number: 13/222/3 (°C&F)
Replacement pot: 13/087/0
Measurement for life.
Whirling hygrometer
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Whirling hygrometers, also known as sling
psychrometers, employ the “wet” and “dry” bulb
principal to determine %RH. They are designed
to be rotated, by hand, to provide adequate and
consistent ventilation of the bulbs.
These hygrometers are filled with a spirit filling.
This traditional model has a folding handle with calculator
chart and instructions to determine the percentage relative
humidity. It is is supplied with 2pcs replacement wicks in a
protective canvas carry case.
Range: -5 to +50°C only
Dimensions: 82 x 232 x 30mm (handle closed)
IMPA code: 37 02 61
Product number: 13/744/2
Pack of 12 replacement wicks: 13/086/0
brannan.co.uk
sales@brannan.co.uk
Compact psychrometer
This instrument uses shorter tubes and
the design incorporates a slide rule type
calculator to determine the %RH.
The body of the instrument slides away
into the handle providing complete
protection when not in use.
The psychrometer is available in choice
of Celsius or Fahrenheit only scales.
Range: -5 to +50°C or 0 to 120°F
Dimensions: 210 x 36 x 16mm
IMPA code: 37 02 61
Product number: 13/606/2 - °C only
Product number: 13/606/1 - °F only
Replacement tube: 13/605/2 (°C only)
Replacement tube: 13/605/1 (°F only)
