Calculator of dimensional change with changing temperatures and

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Calculator of dimensional change with changing temperatures and relative humidity

Remark: calculator only applies to relative humidities between 30 and 70%

With relative humidities lower than 30 % or higher than 70 % irreversable dimensional changes occur

Reference temperature:

Reference relative humidity:

Film length:

Room temperature

Room relative humidity

Temperature expansion coefficient:

Relative humidity expansion coefficient:

Length change:

20

50

660

21

55

18

14

58,08

°C

% RH mm

°C

% RH

µm/m °C

µm/m %RH

µm

You may overrule the reference temperature

You may overrule the reference relative humidity

Fill out the film length at reference conditions

Fill out the room temperature

Fill out the room relative humidity

Default value for silver halide film

Direction of the base material (length or square to the production direction)

Centre or board part of the base material

RH range

Before or after processing

Blackness

After full acclimatisation

Fill out the correct relative humidity expansion coefficient

The RH coefficient is a value between 9 and 14 µm/m %RH, depending on:

Eric Janssens - October 2005

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