Installation; Mechanical Installation - Instrutech CVM211 User Manual

Instruction Manual CVM211 Stinger

Installation

3

Mechanical Installation

3.1
Mount the CVM211 as close as possible to the pressure you want to measure. Long or restricted, small
diameter tubing will create a pressure difference between your process chamber and the gauge. This may cause
a delay in response to pressure changes.
Mounting the CVM211 too close to a gas source inlet may also cause measurement and control instability.
Do not mount the CVM211 near a source of heating or cooling, such as heaters or air conditioning vents.
Mount the CVM211 with its main axis horizontal (see diagram below). Pressure reading errors may occur above
1 mbar if the unit is not mounted horizontally. Below 1 mbar, mounting position has little to no effect.
For Accurate Measurements Above 1 mbar, Mount the Gauge
Axis Horizontally as Shown Below
Incorrect Orientation
Correct Orientation
Mount the CVM211 with port down, if possible, to help minimize the effect of any particles or condensation
from collecting in the gauge.
Do not mount the CVM211 where it will be subjected to excessive vibration. Vibrations may cause unstable
readings, measurement errors and possible mechanical stress to components in the CVM211.
Flanges/ Fittings - follow the manufacturer's recommendations and note the following:
- NPT fittings: When connecting the device using a NPT fitting, apply a thread sealant compound or wrap the
threaded portion of the tubing with one-and-a-half to two wraps of pipe thread seal tape such as PTFE (Teflon®)
tape and hand tighten the gauge into the gauge port. Do not use a wrench or other tool which may damage the
gauge.
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