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TELEVAC
INSTRUMENT MANUAL
VACUUM GAUGE MODEL MM200
CAUTION: Be careful that the anti-seize compound does not come in contact with the gaskets or the
vacuum parts of the flange.
4.
KF FLANGE CONNECTIONS - These connections consist of a centering ring and clamp. The centering ring
is self-centering and aids in alignment. The clamps should be finger-tightened until both flanges are firmly in
contact with the O-ring seal.
Use a new gasket whenever the gauge is reconnected, unless gasket retainer assemblies are used.
5
CAJON FITTINGS - If necessary, a small amount of vacuum grease may be used on the O-ring to obtain a
good seal.
306 GAUGE SENSOR INSTALLATION
TYPE
Diaphragm
Convection
Thermocouple
Cold Cathode
Hot Cathode-glass
Hot Cathode-nude
A - To prevent debris from entering the gauge sensor and to provide the highest accuracy, it is recommended that
the gauge sensor be installed with its main body vertical. Do not mount the sensor in areas where gases are
allowed to stream directly into the gauge tube since damage to the filament could result. Install cable to sensor and
chassis sockets. Connector is keyed to provide proper orientation at the sensor socket. Do not force connector
into socket.
B - The gauge sensor can be mounted in any position. The magnet should not be closer than 1" to any magnetic
material. Additionally, when mounting the sensor take into account that the field of the gauge magnet may disturb
beams of charged particles in the vacuum system. Install shielded high-voltage BNC connector to gauge and
chassis sockets before turning on the power.
C - The gauge sensor can be mounted in any position. It is important that gauge have good
communication with the vacuum space for accurate pressure readings, especially at lower pressures.
160Phone:(215) 947-2500 fax:(215) 947-7464 e-mail:sales@televac.com
(Refer to Table 3.3 for Gauge Sensor Installation)
Table 3.3 - Gauge Sensor Installation
MOUNTING
A
A
A
B
C
C
MM-200_im REV M
Page 26 of 160
GAUGE
INLET
ORIENTATION
Vertical, down, desired
Vertical, down, required
Vertical, down, desired
NA
Horizontal
NA
web site:www.televac.com
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