Installation, Operating & Maintenance Instructions 
Series 650 DN 100-250 (I.D. 4“ - 10”), CC-Link 
 
 
 
VAT Vakuumventile AG, CH-9469 Haag, Switzerland 
Tel +41 81 771 61 61   Fax +41 81 771 48 30   CH@vatvalve.com www.vatvalve.com 
280672EB 
2010-12-15 
12/94 
 
2.5  Requirements to sensor connection 
 
 
To achieve fast and accurate pressure control a fast 
sensor response is required. 
 
Sensor response time: < 50ms 
 
The sensor is normally connected to the chamber by a 
pipe. To maintain that the response time is not degraded 
by this connection it needs to meet the following 
requirements: 
 
Inner diameter of connection pipe:  > =  10 mm 
Length of connection pipe:  < = 300 mm 
 
These conductance guidelines must include all valves 
and limiting orifices that may also be present. 
 
Make also sure that there is no obstruction in front of 
sensor connection port inside the chamber. 
 
The sensor should also be mounted free of mechanical 
shock and vibration. 
Dynamic stray magnetic fields may introduce noise to 
sensor output and should be avoided or shielded.