Pfeiffer Vacuum TPR 271, Руководство по эксплуатации, Страница: 18 / 40

Required materials
● Measurement cable for a Pfeiffer vacuum total pressure measuring and control unit from the
Ac-
tiveLine accessories
● Self-fabricated measurement cable for an evaluation unit provided by the customer
Length ≤35 m: Conductor cross-section 0.25 mm
2
Length >35 m: Conductor cross-section 0.34 mm 2
● Hirschmann cable socket
Establishing the electric connection
1. Connect the measurement cable to the gauge.
2. Tighten the locking screw on the Hirschmann cable socket.
– Tightening torque: ≤ 0.2 Nm
3. Connect the gauge to a Pfeiffer Vacuum total pressure measuring and control unit, or to an evalu-
ation unit provided by the customer.
2
5
3
1
6
4
Fig. 3: Measurement cable and Hirschmann cable socket
1 Identification (3.0 kΩ to GND) 4 Supply voltage 15 to 30 V
2 Analog output 0 to 10 V 5 Ground (GND)
3 Analog ground 6 Shielding
Manufacturing measurement cable
1. Observe the following steps to ensure optimum signal quality, whereby ground loops, differences
in potential or EMC will influence the measuring signal.
2. Use a cable with braided shield.
3. Connect the supply earth directly with the protective earth of the power supply pack.
4. Use a differential measuring input with separate signal earth and supply earth.
5. Assemble the Hirschmann cable socket.
Assembling the Hirschmann cable socket
1. Prepare the Hirschmann cable socket as shown in the "Measurement cable and Hirschmann ca-
ble socket" diagram.
2. Solder in the connection cable as prescribed in the terminal connection diagram.
3. Assemble the Hirschmann cable socket.
Installation
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