subject: Flow Calibration Equipments - An Essential For Your Flow Meters [print this page] Flow meter calibration should be performed correctly with the best equipment for the best results. Gas flow calibration of flow meters requires the right equipment and the correct methods. The right equipment for flow meter calibration used to include piston provers, bell provers, and other variable volume devices. However, those devices may cause pressure and temperature to fluctuate; they have limited operating conditions; and they are complex to use and error prone.
Using a Fluke Calibration molbloc/molbox flow meter calibration system is a better solution, because it simplifies the process and improves results. Youll need to
Connect your equipment so that it is as leak free as possible.
Generate a steady flow and maintain it.
Acquire the output of your unit under test and compare it to your reference over the same period of time.
Automate your gas flow calibration for better results.
Fluke Calibration developed its molbloc/molbox gas flow calibration system to support growing requirements for lower measurement uncertainties and documented traceability of flow measurements at the process level. molbloc/molbox can be configured in a wide variety of ways to support many gas flow calibration applications. These gas flow calibration systems do not only perform flow meter calibration, but also calibration of thermal MFCs, rotameters, turbine meters, bubble meters, and other similar instruments.
Choosing the correct configuration for your molbloc/molbox gas flow calibration system need not be overly complex. Steps include:
Choosing a molbox or molbox Reference Flow Monitor
Choosing the molbloc mass flow elements
Selecting one or several molstic molbloc mounting systems (if required)
Selecting molbloc/molbox applications software (if required for automation)
One type of molbloc that might be useful is a sonic nozzle calibration device. A sonic nozzle calibration device like the molbloc-S enables you to extend the range of a molbloc/molbox gas flow calibration system so you can do flow meter calibration on a very precise level up to 5,000 slm.
If you do not need that high a flow rate, you can choose a molbloc-L Laminar Flow element, which also are designed for gas flow calibration with a molbox mass flow terminal, from 1 sccm to 100 slm.
You will probably also need some accessories to tie your flow meter calibration system together. For that Fluke Calibration offers molstic molbloc mounting systems. These are available to help you get the best performance out of your molbloc/molbox system while helping you to connect everything together and regulate the pressure being applied to the unit under test.
