6
Product description
3
Product description
The transmitter TPR 270 is equipped with a temperature-compensated Pirani sensor
and enables total pressure measurements in the range of 1 • 10
-4
... 1000 hPa. Is the
transmitter being operated with a controller, a calibration factor can be applied for cor-
rection of the non-linear characteristics in the pressure range < 0.5 hPa for different gas-
es.
3.1
Product identification
To correctly identify the product when communicating with Pfeiffer Vacuum, always have
the information from the rating plate available.
Fig. 1:
Product identification on the rating plate (example)
Scope of delivery
The following positions are included in the delivery consignment:
– TPR 270
– Protective cover
– Operating instructions
3.2
Function
This sensor is based on the thermal conductivity of gases for vacuum pressure measure-
ments (Pirani principle). A thin tungsten wire is heated up cyclically to a certain temper-
ature. The time required for heating is a measure for the pressure.
The transmitter can be operated with an ActiveLine controller or with a customer related
control device.
Fig. 2:
TPR 270
D-35641 Asslar
Emmeliusstrasse33
Mod.
24V - 1W
Supply:
Ser.-Nr.:
4200061
TPR 270
Outp.: 0-10 V
15 - 30 V/DC
Mod.Nr. PT R26 770
Made in Germany 07/2012
HV
Button for pressure calibration "low pressure"
ATM Button for pressure calibration "high pressure"
VAC
UU
M
“HV“
“ATM“