HFM-I-401 Mass Flow Meter

The 400 Series is a new family of flow instruments
which is specifically designed to meet the needs of the
industrial gas flow market. Each instrument in the series
can be driven by a +24 VDC power supply. In addition,
the “I” family in the 400 Series features an IP-65
enclosure which will allow the use of the instrument in a
wide variety of environments.

The electrical connection can be made via either a
terminal strip located inside the enclosure or through an
IP-65 compatible electrical connector, which can be
quickly connected. All of the instruments include both
analog and digital I/O. This signal is linear to the full
scale flow rate of the measured gas.

Intensive research has resulted in a vastly improved
linearity. This becomes more apparent when different
gases are measured. The 400-I series minimizes the
large changes in linearity that typically occur when the
flowing medium changes.

Available flow ranges:0-10 slm to 0-350 slm (N2)

FEATURES
• High accuracy in Nitrogen
• Standard: ± 1% full scale
• Polynomial: ±(0.5% reading + 0.2% full scale)
• Mountable remote electronics package for maximum flexibility
• Approved for Hazardous Location Nonincendive for use in Class I, Division 2, Groups A, B, C and D.
• Choice of RS232, RS485 or Ethernet
• Operation with analog and/or digital commands and outputs
• 4 pin D-coded M12 Digital Connector
• Built-in Totalizer measures total amount of gas added to a system
• IP65 environmental protection (NEMA 4)
• Powered with 24 VDC or ± 15 VDC
• NIST Traceable Calibration Certificate

APPLICATIONS
• Process gases
• Industrial gas distribution
• Petrochemical
• Fuel cell testing
• Pharmaceutical production
• Secondary calibration reference
• Gas generation

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