Carrying Out A Measurement - TESTO 523 Instruction Manual

Using the product
10

Carrying out a measurement

Warning!
Danger o o f i i njury d d ue t t o h h ighly p p ressurized h h ot, c c old o o r p p oisonous
refrigerants!
Always secure the measuring instrument with the carabiner
suspension hook before pressurizing the instrument, in order to
prevent falls (danger of breakage).
Before each measurement, ensure that the refrigerant hoses are
intact and correctly connected. Do not use tools to connect the
hoses. Connect the hoses only hand-tight (max. torque 5.0Nm /
3.7ft*lb).
Wear protective glasses and protective gloves.
Observe permitted pressure range!
Measuring:
The handling steps from the chapter "Preparing measurement" have been
carried out.
Pressurize the instrument.
1
Read off measurement values:
2
For Zeotropic refrigerants (those with temperature glide), the tempera-
tures t
(evaporation or condensation) of the last component.
The temperature measured must be allocated to the super-heating or
sub-cooling side (function button t
allocation, t
/ t displayed are those at the end of the phase change
o c
or Δt
/ t
oh oh sh
<--> t
oh
or Δt
, or t / t
cu cu sc
). Dependent on this
cu
is displayed.