Digital Metaline Flow Meter and Controllers

Can be added to any 300 series device

Features

• Flows to 30 slm (Nitrogen Equivalent)
• Accuracy in Nitrogen Better Than ±0.5% of Reading
• Settling Time of 550 ms
• All Metal Seals
• Conversion Factors for Over 100 Gases
• Flexible Operation with ± 12, ±15 or 24 VDC Power Supply
• RS232/485, Device Net™ (release date TBD)
• Auto-Zero
• Self-Diagnostics – Sensor, Valve and Overflow
• Analogue or Digital Output
• Wetted Surfaces 4 Ra or Better

Applications

• Gas Blending
• Research
• R&D and Process Flows
• Pollution Monitoring

The Hastings Instruments Digital Metaline represents a culmination of over 50 years of expertise in the designing and manufacturing of reliable high-quality massflow instrumentation. This digital instrument complements an extensive array of wide-ranged analogue instrumentation.

As with most all Hastings flow instruments, this device is based on a modular design. The heart of the instrument is a patented thermoelectric sensor and shunt assembly which provides a highly linear response over a broad range of flow measurement. The physics of the design is elegant. The inboard sensor taps sample the laminar flow in the annular passageway formed by the shunt and base. The change in sensor power required to maintain a constant sensor temperature is proportional to the flow. Further, the sensor is designed to be removable/replaceable in the field to virtually eliminate downtime due to clogging. For a recalibration in the field (a calibration standard is required), the customer needs to simply set the zero and span pots or send the zero and span commands via the digital cable.

This digital instrument offers alarms for sensor failure. All of the known gas conversion factors are factory programmed in the memory so that changing gases is accomplished by simply sending the appropriate command.
The Digital Metaline can operate with standard analogue commands and outputs or with digital data as received .