MKS Baratron 631D, Instruction Manual, Page: 35 / 64

Chapter Two: Installation
27
Piping Considerations and Port Connections
General

Position a line tap above or to the side of the process line, and position the sensor above
the line tap
This allows any liquids which may be present to drain into the process line.

Install the interconnecting piping so that it slopes away from the sensor to the process line
A slope of 1 inch per foot (8 centimeters per meter) is adequate.

Purge the interconnecting piping (close to the process tap) when needed to prevent
sediment buildup
When purging, be sure to isolate the sensor from the interconnecting piping.
Sensor Fittings
The following additional fittings are available for the Type 631D transducer:

½” (12.7 mm) tubing

Swagelok
®
8-VCR
®
female

NW-16-KF

1½” Tri-Clover
®

2” Tri-Clover
Special Note for ½” (12.7 mm) Tubing
The standard tubing for the 631D transducer is straight ½” (12.7 mm) tubing. The Type 631D
transducer has only one pressure port (Px).
To connect the 631D transducer to a Swagelok
®
Ultra-Torr
®
compression fitting:
1. Ensure the tubing is clean and free of axial scratches.
2. Insert the tubing through the compression nut and O-ring all the way to the shoulder.
3. Tighten the nut.