A long air pipe for distributing supplying air and returning air ratedly and uniformly is made up of a long windpipe and bypass branch pipes.

The flow controller urges the calibrant supply through the restrictor toward the diluent supply.

When the flow rate reaches a target flow rate the process stops and the microhole (52) is properly calibrated.

The system includes a restrictor, a flow controller, a pressure sensor and a processor having a module executable by the processor.

The air flow display holds calibration for 30 days, even with atmospheric changes.

All MFCs are designed and standardized to regulate a specific type of gas or liquid at a specific flow rate.

The orifice plate includes a member and an orifice (30) penetrating the member.

It is designed and calibrated to control a certain type of liquid or gases at a specific range of flow rates.

In operating a flowmeter (200), it may be the case that, if not properly calibrated, the flowmeter (200) will produce erroneous measurements, e.g., will indicate a non-zero flow during a period of zero flow.

Change in resident gas-pressure in excess of a calibrated vacuum flow rate or the presence of liquid in any monitored space initiates an alarm.

Pre-calibrated metal is fed into metal melting means with the help calibrated metal feeding means.

Factory Calibrated: our meters are calibrated with a 342 ppm NaCl solution.

The meters are factory calibrated with a NaCl solution of 342 ppm.

NOTE: HM Digital products are calibrated with a 342 PPM NaCI solution.

Factory Calibrated: calibrated with a 342 ppm NaCl solution.