3 Product description
3.1 Function
The TPR 270 and TPR 271 gauges have a Pirani temperature-compensated sensor. This Pirani sensor
uses the heat conductivity of gases for vacuum measurement. The gauge heats a thin tungsten or plati-
num/rhodium wire in cycles to a specific temperature. The time required for the heat-up process is a
measure for the pressure. The measuring signal is logarithmically dependent on the pressure across
the entire measuring range.
2
3
1
4
Fig. 1:
Design of the transmitter
1 Hirschmann cable plug
3
“HV” button with protective plug
2 “ATM” button with protective plug
4
Connection flange
3.2 Identifying the product
You will need all the data from the rating plate to safely identify the product when communicating with
Pfeiffer Vacuum.
► To ensure clear identification of the product when communicating with Pfeiffer Vacuum, always
keep all of the information on the rating plate to hand.
3.3 Scope of delivery
● Gauge
● Operating instructions
Unpacking the product and checking completeness of the shipment
1. Unpack the product.
2. Remove the transport fasteners, transport protection etc.
3. Store the transport fasteners, transport protection etc. in a safe place.
4. Check that the shipment is complete.
5. Ensure that no parts are damaged.
Product description
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