TELEDYNE HASTINGS INSTRUMENTS

Transcription

1 TELEDYNE HASTINGS INSTRUMENTS MODELS HFM-D-3 & 305 HFC-D-3 & 307 FEATURES Flows from 0-25 slm (N2 Equivalent) up to slm (N2 Equivalent) Accuracy in Nitrogen (0.2% of Full scale + 0.5% of Reading) Flexible Operation with ±12, ±15 or 24 VDC RS232/485 Auto-Zero (Flow Controllers Only) Self-Diagnostics Sensor, Valve and Overflow Analog or Control and Indication Store Up to 10 Gas Calibrations Provides Totalized Flow Process Control Alarms APPLICATIONS Heat Treat Fuel Cell Testing Pharmaceutical Production Secondary Calibration Reference Gas Generators Research BENEFITS Enhanced Accuracy Superior Linearity Communications 300 Series - Med/High Capacity DESCRIPTION HFM-D-3 The Teledyne Hastings Instruments 300 Series thermal mass flow meter/controller provides accurate, flexible, and reliable gas flow metering and/or control. The heart of the instrument is a patented thermal transfer sensor and laminar flow shunt assembly that are also used in the analog 300 series flow instrumentation. Each of these parts were designed by examining the physics behind the nonlinearities in the common thermal sensor and flow shunt design and altering the operation and construction to remove the primary sources of error. The major source of non-linearities for a laminar flow element are the pressure drops generated by a fluid entering or exiting a flow channel within the flow element. The 300 series laminar flow element is designed such that the pressure drops that are measured occur in an annular region around the flow shunt after the entrance effects and before the exit effects. This design greatly improves the linearity of the flow divider and minimizes the large changes in linearity that typically occur when the specific gravity of the flowing medium changes.

2 Design Features (cont) The typical errors in thermal sensors are due to the use of a difference in the voltage in the heating circuit between the upstream and downstream heater coil. The 300 Series thermal sensor controls the heated coils to a constant temperature above the measured ambient temperature and then measures the power difference to heat up the upstream and the downstream heater coils. These instruments contain a number of powerful features that make them a good choice for a wide range of applications, for example: 1) An internal curve fitting routine removes the small non-linearities measured for the calibration gas. 2) The status word provides alarms and warnings to inform the user of an overflow/underflow conditions. 3) Up to 10 different ranges/gas calibrations can be stored internally. 4) A totalized flow variable can be used to measure the total amount of gas added to a system. 5) The 300 Series can emulate an analog controller or it can operate with digital commands. Optional Features Fittings VCR, VCO, Swagelok Straight Thread NPT High- Rating (1000 psig) Cleaning for Oxygen Service Accessories Power Supplies/Readouts Available with Totalizer Alarms Quick Start Kit Cables: 8', 25', 50', 100' & 200' COMMON SPECIFICATIONS Accuracy (Calibration Gas Only) Repeatability Maximum Operating High- Option Coefficient Leak Integrity ± (0.2% of F.S % of reading) ± 0.1% of F.S. 500 psi 1000 psi (proof tested to 1500 psi) Not available on HFM-D-305 & HFC-D-307 (Span) 0.%/psi (N2) (0-50 psig) < 1x10-9 sccs He Operating Temperature -10 C C Temperature Coefficient Full Scale Flow Ranges Standard Optional s (span) < 0.05%/ C of reading slm; HFM-D-3(L)/HFC-D-3(L) slm; HFM-D-3(H)/HFC-D-3(H) slm; HFM-D-305/HFC-D VDC 0-10 VDC, 4-20mA, 0-20mA Connector 15-pin subminiature D Zero < 0.7% of F.S. *Attitude Sensitivity (N 19.7psia) Span < 0.05% of reading SPECIFICATIONS HFM-D-3 and HFM-D-305 Power Requirements 5.5 watts Temperature Coefficient < 0.2% Full Scale / C Wetted Materials Weight (approx.) 316L SS, Nickel 200, 3 SS, Viton ** 4.0 lb (1.8 kg) HFM-D lb (4.2 kg) HFM-D-305 SPECIFICATIONS HFC-D-3 and HFC-D-307 Command Input (analog) Power Requirements Temperature Coefficient Wetted Materials Weight (approx.) 0-5 VDC (std), 0-10 VDC, 0-20 ma, 4-20 ma 7.5 watts (zero) insignificant when auto zero is active 316L SS, Nickel 200, Kalrez valve seat, 3 SS, Teflon, Viton ** 5.3 lb (2.4 kg) HFC-D lb (6.94 kg) HFC-D-307 Teledyne Hastings Instruments reserves the right to change or modify the design of its equipment without any obligation to provide notification of change or intent to change. Viton is a registered trademark of Dupont Performance Elastomers Kalrez Is a registered trademark of DuPont Dow Elastomers Teflon is a registered trademark of E.I. Dupont de Nemours & Co. VCO and VCR are a registered trademark of Swagelok Company.

3 Outline Drawing 3 / 3 HFM-D-3 HFC-D-3

4 Outline Drawing 305 / 307 HFM-D-305 HFC-D-307

5 Selection Chart For Models Pin Out Fittings Cal HFM-D-3 HFC-D-3 Order No. Options Pinout H Pin (Std) U Pin volt (Std) 0-10 volt 4-20 ma 0-20 ma Small Base Fittings 06 ½ VCR ½" Swagelok (Std) ½" VCO ⅜" Male NPT Large Base Fittings 07 ½" Male NPT 04 ¾" Swagelok (Std) 08 ¾"-16 Fem S. Thread 05 ¾" VCO mm Swagelok 09 11/16"-12 Female ST mm Swagelok mm Swagelok Viton (Std) Kalrez Neoprene 04 Buna-N 500 psig max (Std) 1000 psig Calibration N2 or Air 2 NIST Traceable Calibration Reports 3 NIST Traceable Calibration Reports 04 4 NIST Traceable Calibration Reports 05 5 NIST Traceable Calibration Reports 06 6 NIST Traceable Calibration Reports 07 7 NIST Traceable Calibration Reports 08 8 NIST Traceable Calibration Reports 09 9 NIST Traceable Calibration Reports NIST Traceable Calibration Reports RS232 (std) RS485

6 Selection Chart For Models Pin Out Fittings Cal HFM-D-305 HFC-D-307 N/A Order No. Options Pinout H Pin (Std) U Pin volt (Std) 0-10 volt 4-20 ma 0-20 ma Fittings 1 VCR 1 Swagelok (Std) 1 VCO 25 mm Swagelok Viton (Std) Kalrez Neoprene 04 Buna-N 500 psig max (Std) Calibration N2 or Air 2 NIST Traceable Calibration Reports 3 NIST Traceable Calibration Reports 04 4 NIST Traceable Calibration Reports 05 5 NIST Traceable Calibration Reports 06 6 NIST Traceable Calibration Reports 07 7 NIST Traceable Calibration Reports 08 8 NIST Traceable Calibration Reports 09 9 NIST Traceable Calibration Reports NIST Traceable Calibration Reports RS232 (std) RS485 PB-168_11/10 Teledyne 20 All Rights Reserved. Telephone: (757) Toll Free: (800) Fax: (757) World Wide Web: hastings_instruments@teledyne.com P.O. Box 1436 Hampton, VA 23661