Related Products

​​​Part Number ​Description
OPT-E 230 vAC Operation
OPT-P Pressure Test to 1500 PSIG
OPT-T 200oC Operation
OPT-H Hermetic Seal
NALL Digital Readout, Box Style Power Supply, 0 - 4 VDC, 115 vAC
​NALL-P / CC Digital Panel Mount Power Supply, 4 - 20 mA output, 115 vAC
NALL-P Digital Readout Panel Mount Power Supply, 0 - 5 VDC, 115 vAC
​NF-Length-NMNALL Series Cables
(8', 25', 50', 100', 200', 300', Custom Lengths)

​NFT-LengthT-NM​NALL Series Cables, Hi Temp
(8'. 25', Custom Lengths)
Flow Service Plan Purchase two calibrations and receive a third free (unique to serial number; contact factory for pricing)​


The Original Hastings  Flow Meter, Low Pressure Drop!

The NALL Flow  Meter is the meter that started a legacy .  Operating on a unique thermal principle,  the NALL  Series is the choice  for high temperatures and adverse environmental applications. Inherently linear, the flexible NALL separates the transducer from  the electronics and can meter a wide range of flow.

The NALL series meters  have flow ranges from 0-10 sccm to flows of 0-15,000 slm; provide analog outputs, ultra-low pressure drops, all metal (standard), can be hermetically sealed and operate up to 200℃.  The full scale range  is  specified by the end user.  A NIST traceable calibration certificate is standard.   Available in Monel for use with corrosive gases.

±1% of full scale Accuracy

Buy from the designers, Teledyne Hastings, and experience extraordinary customer service. Let us solve your application challenges, by designing and building your custom flow instruments.

​​​​Applications and Industries

  • Energy / Power Generation
  • High Temperature Process Flows
  • R&D Flow


NALL Series Meter
(User Selectable)
0 - 10 sccm to 0 - 15,000 slm (N2)
Accuracy + 1.0% of full scale
​Repeatability + 0.05% of full scale
Maximum Working Pressure 500 PSIG (Optional 1000 PSIG)
Analog I/O (Standard) ​0 - 5 VDC
Analog I/O (Optional) 4 - 20 mA
Power Requirements
115 volt AC, 50/60 Hz - 15 watt or 230 volt AC
Wetted Materials ​316SS, or Monel, Gold/Nickel Braze