LEYBOLD 230110, Instruction Manual

Page: 21 / 56

GA130001441_002_C0
– 09/2016
21
5.3.3 Earthing
With the aid of the earthing screw (

Figure 7, B, page 20) the COMBIVAC CM 51 can
be connected to the protective ground of the vacuum chamber.
NOTICE: Earthing
Connect the Earth connection on the vacuum chamber by means of a
protective earth conductor to the earthing screw on the instrument
5.3.4 THERMOVAC Measurement Channels (TM 1 and TM 2)
The connections TM 1 and TM 2 (

Figure 7, D, page 20) serve the purpose of
connecting two THERMOVAC gauge heads (

Chapter 3.4 Connectable Gauge Heads,
page 11). For both measurement channels one each 6-way DIN socket is provided.
CAUTION: Impermissible Sensors.
Gauge heads which have not been designed to be operated in connection
with the COMBIVAC CM 51 or which do not comply with current EMC
guidelines can impair operation of the instrument or even damage it. Always
operate the COMBIVAC CM 51
with approved gauge heads

Chapter 3.4
Connectable Gauge Heads, page 11.
Connecting:

TM 1: connect the gauge head using the corresponding connecting cable to connection
TM1 on the rear of the COMBIVAC CM 51.

TM 2: connect the gauge head using the corresponding connecting cable to connection
TM2 on the rear of the COMBIVAC CM 51.
WARNING:
For utilisation of the connections TM1 and TM2 a special cable is required.
The ground connection (

Figure 7, B, page 20) of the special cable must
under all circumstances be connected to the ground connection on the rear of
the instrument.
5.3.5 PENNINGVAC Measurement Channel (PM)
The connection PM (

Figure 7, C, page 20) serves the purpose of connecting a
PENNINGVAC gauge head (

Chapter 3.4 Connectable Gauge Heads, page 11).
DANGER: High tension
The PENNINGVAC gauge head is powered by a high tension (ignition voltage
3.3 kV; operating voltage 1.7 kV / Ri = 6.6 MOhm).
CAUTION: Impermissible Sensors.
Gauge heads which have not been designed to be operated in connection
with the COMBIVAC CM 51 or which do not comply with current EMC
guidelines can impair operation of the instrument or even damage it. Always
operate the COMBIVAC CM 51
with approved gauge heads

Chapter 3.4
Connectable Gauge Heads, page 11.