TESTO 480 - Page 42

6 Using the product
42
k factor -
differential
pressure unit
Conversion factor
mm HG 0.086613
in HG 0.017185
mm WS 0.31933
lp.p.sq.ft.
0.14452
psi 0.012043
inches H
2
O 0.063361
Carrying out a measurement
1. Switch the instrument on with [ ].
> Configure the parameter display so that differential pressure
and volume flow are shown in the favourites tab, see Setting
the measurement display, page 22.
2. Create new measuring point: [ ] → Select measuring
location [ ] → [ ]→ New measuring point.
Alternatively, the default point can be changed.
> Set parameters at the measuring point:
Parameters Explanation
Temperature, relative humidity
and absolute pressure
Input optional, parameters are not
taken into account for this
calculation.
Flow rate correction factor Input optional, parameter is not
taken into account for this
calculation.
Pitot tube factor Input optional, parameter is not
taken into account for this
calculation.
Channel geometry
Select the c factor / volume flow
function with [ ].
Enter the component-specific k
factor.
Select the volume flow unit for
which the manufacturer has
defined the k factor.