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Low Capacity Flowmeters and Controllers

(from 0-10sccm to 0-30slpm)
PDF Data sheet download (285kB)
Features
  • ±1% of Full-Scale Accuracy
  • Standard Size
  • More Ranges
  • Higher Pressures
  • Proven Reliability
  • Range — 10 to 30,000 SCCM (N2 Equivalent)
Applications
  • Leak Testing
  • Medical Research
  • Vapour Deposition
  • R&D and Process Flows
  • Semiconductor Processes
  • Pollution Monitoring
  • Gas Blending
  • Chromatography
Design Features
The HFM/HFC Series of flow instruments is based on a modular design. At the heart of each instrument is an insulated thermoelectric sensor which provides enhanced zero stability and allows installation in any orientation plane. This sensor is designed to be removable/replaceable in the field to virtually eliminate long down time due to clogging, the most common cause of failure in the industry. Additionally, the HFM/HFC design features an integral filter and an easily replaceable closed loop electronics card.* The HFC also features an externally adjustable valve with easily replaceable flow orifices.

All of these standard features, when coupled with the instruments inherent linear response to flow changes and Hastings Instruments’ long-proven reputation for quality, result in the finest flowmeters and flow controllers available today.
*Note: After changing components, instruments require recalibration to meet accuracy specifications.
Optional Features
  • Fittings
  • O Ring seals
  • Enhanced response time
  • Enhanced flow stability
  • High pressure rating (1500 PSIG)
  • 4-20 mA converters
  • Cleaned for oxygen service
 Accessories
  • Power supplies/readouts
  • Flow totalisers
  • Alarm set points
  • Interconnecting cables

Specifications
SPECIFICATIONS HFM-200 Mass Flow Meter
Accuracy and Linearity ± 1% F.S.
Repeatability ± 0.05% F.S. typical
Standard Pressure Rating 500 psi
Pressure Coefficient -0.005%/psi (0-500 psig N2 ) typical
High-Pressure Option Proof tested to 1500 psig
Leak Integrity < 1x10-9 sccs
Temperature Coefficient ±0.05%/°C (15-45°C) typical
±0.10%/°C (0-50°C) typical
STP 0°C and 760 Torr
Power ±15 VDC at ± 25 mA
Flow Signal (inherently linear) 0-5 VDC
Wetted Material 316 SS, Viton®*, 87/13 Au/Ni Braze
Connector 15-pin subminiature D
Fittings 1/4-in. Swagelok ® tube
Weight (approx.) 1.8 lb
SPECIFICATIONS HFC-202 Mass Flow Controller
Accuracy and Linearity ±1% F.S.
Repeatability ±0.05% F.S. typical
Std. Pressure Rating 500 psig
High Pressure Option Proof tested to 1500 psig
Pressure Coefficient -0.005%/psi (0-500 psig N2 ) typical
Control Valve DP* 10 to 50 psi
Leak Integrity < 1x10-9 sccs
Temperature Coefficient ±0.05%/°C (15-45°C) typical
±0.10%/°C (0-50°C) typical
STP 0°C and 760 Torr
Power ±15 VDC at +50 mA/-200 mA
In valve over-ride: ±15 VDC at +65 mA/-220 mA
Flow Signal (inherently linear) 0-5 VDC
Command Ref. Signal 0-5 VDC
Wetted Material 316 SS, Nickel, Viton®*, 87/13 Au/Ni Braze
Connector 15-pin subminiature D
Fittings 1/4 In. Swagelok
Weight (approx.) 1.8 lb
*Consult Chell Instruments for other pressures.

*Viton® is a registered trademark of Dupont Performance Elastomers

Displays and Power Supplies

Four channel digital display and controller. The CMD100 is a versatile and networkable digital display / controller.
16 bit Transducer and Controller Display Self contained displays for pressure and flow transducers / controllers.
5 Digit Linearising Transducer Display Self contained linearising displays for pressure and flow transducers.

Chell Instruments