PITTCON 2001: DIGITAL Mass Flow Controllers
Programmable for various control functions such as SET POINT, TOTALIZER, STOP TOTALIZER, READ TOTALIZER, totalize from PRESET FLOW, stop at PRESET TOTAL, AUTO ZERO, PROGRAMMABLE FLOW and more. Auto zero feature utilizes an automatic balancing circuit that virtually eliminates drift of zero and span. Two dry contact closures turn external process equipment ON and OFF. Gas flow rates are unaffected by temperature and pressure variations within stated limitations.
Extensive on-board memory enables each controller to store NIST traceable calibrations for up to ten gases. Controllers also have conversion factors for 256 different gases in hardware memory making this a most versatile flow controller. Wetted parts include 316 stainless steel (SS), 416 SS, and Viton® .
- Accuracy: ±1 % of full scale.
Repeatability: ±0.15% full scale.
Maximum Flow: 100 sL/min [N2)
Maximum Gas Pressure: 500 psig / 34.5 bars.
Leak Integrity: 1 x 10-9 sccs He maximum.
Output Signal: 4 to 20 mA; 0 to 5 VDC; 0 to 10 VDC
Circuit Protection: Built-in polarity reversal protection, resettable fuses provide power input protection.
Connections: 1/4" or 3/8" compression fitting
Aalborg Instruments & Controls, Inc., 20 Corporate Drive, Orangeburg, NY 10962. Tel: 845-398-3160; Fax: 845-398-3165.
Viton® is a registered trademark of DuPont Performance Elastomers.