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DAVIS Á¾ÇÕ °èÃø±â - Çѱ¹´ë¸®Á¡ ÄÚ¸°½º°è±â(ÁÖ)
 
VI571 Absolute pressure transmitter
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Viatran's small and rugged Model 571 pressure transmitter is designed for accurate
Viatran's small and rugged Model 571 pressure transmitter is designed for accurate and stable measurement of medium to high pressures. A sealed gauge (PSIS) or absolute (PSIA) pressure reference is available.

Compact and completely sealed, the Model 571 is designed to withstand harsh atmospheres and submersion to 100 feet. All welded construction and the use of 316 stainless steel makes the 571 airtight, watertight, and ideal for corrosive environments. The "O" Ring free design simplifies the transmitter and ensures reliability.

Model 571 qualifies for CSA and FM explosion proof type rating, as well as the CENELEC (NEMKO) flameproof approval. The 571 has also been approved by FM as intrinsically safe (entity).

External zero, span, and calibration controls are hermetically sealed, yet easily adjusted by means of Viatran's unique magnetically-coupled drive system. The signal conditioner in the 571 allows for 5:1 ranging of the transmitter's standard pressure range.

A special feature of this transmitter is a calibration circuit that permits setup and ranging in the field - without the need for a calibrated pressure source.

 
Features
  • Hermetically sealed external controls
  • Built-in calibration signal
  • All welded, watertight construction
  • Submersible
  • FM, CSA & CENELEC Certification (optional)
 
Applications
  • Offshore oil rigs
  • Shipboard/Marine
  • Pulp and paper
  • Chemical processing
  • Water treatment
 
SPECIFICATIONS

Full Scale Pressure Range (FSPR)

0-100,150,300, 500, 1000, 2000, 3000, 5000, 10K,15K, 20K, 25K, 30K, 40K, 50K, 60K, 75K, 100K PSIA/PSIS
Non-linearity (Best fit straight line) Typical @ 0.20% FSO (see graph)
Hysteresis & Repeatability ¡Â ¡¾0.10% FSO
Full Scale Output 16mA at 70¡ÆF
Resolution Infinite
Long Term Stability ¡Â ¡¾0.25% FSO per 6 months
Response Time Mechanical and Electrical Combined ¡Â 20mSec to reach 90% of FSO
Temperature Effect on Zero ¡Â ¡¾0.5% FSO per 100¡ÆF
Temperature Effect on Span ¡Â ¡¾0.5% FSI per 100¡ÆF
Temperature Effect on Zero & Span combined at 5:1 Range Down ¡Â ¡¾4.0% FSO per 100¡Æ
Compensated Temperature Range 0¡ÆF to +180¡ÆF
Max./Min. Operating Temperature +190¡ÆF / -10¡ÆF
Non-Operating Temperature Range -65¡ÆF to +250¡ÆF
Electrical
Supply Voltage 10-40 VDC
Output Signal 4-20mA at 70¡ÆF
Load Impedance 1500 Ohms maximum at 40 VDC
Zero Adjustment Elevation -100% of FSO
Span Adjustment Rangeable down 5:1 from standard range
Calibration Signal Accuracy is provided with each unit ¡¾ 1.0% FSO. The exact signal to pressure correlation
Mechanical
Pressure Connections
0-100 thru 0-15K PSI 1/4" NPT female
0-20K thru 0-50K PSI 9/16" - 18 gland thread, pressure relieved, 1/4" OD high pressure tube, 60¡Æ cone. Conforms to autoclave type F-250-C. F-312-C150 fitting and also available at  these ranges
0-60K thru 0-100K PSI 5/8" = 18 gland thread, pressure relieved. 5/16" OD  high pressure tube, 60¡Æ cone. Conforms to autoclave type F-312-C150
Proof Pressure
0-100 thru 0-15K PSI 1.5 times FSPR or 20K PSI - whichever is less
0-20K thru 0-100K PSI 1.2 times FSPR
Burst Pressure
0-100 thru 0-3K PSI ¡Ã 5 times FSPR
Up to 0-5K PSI ¡Ã 4 times FSPR
Up to 0-10K PSI ¡Ã 2.7 times FSPR
Up to 0-15K PSI ¡Ã 2.3 times FSPR
Up to 0-100K PSI ¡Ã 1.5 times FSPR or 125K PSI - whichever is less
Shock Limitation 100 G's
Weight 24 oz.
Certifications
Enclosure Classification NEMA 4X
Intrinsically Safe FM approved for use in Class I, II, & III, Div. 1, Groups A thru G indoor and outdoor. NEMKO/CENELEC (approval pending) EEx la IIC T6
Explosion Proof FM approved as suitable for use in Class I, II, III, Div.1, Groups A thru G, Hazardous locations. CSA approved for use in Class I, Div. 1, Groups A, B, C & D, Class II, Div. 1, Groups D, F & G, and Class III, Div.1 for Hazardous locations. NEMKO/CENELEC approved flameproof EEx d IIC T6

Standard Pressure Ranges in PSI - when ordering, please choose code that matches your specific range.

Code

Range

Code

Range

Code

Range

Code

Range

AH

0-50

AW

0-750

BF

0-5000

BS

0-30K

AM

0-100

AY

0-1000

BH

0-7500

BU

0-40K

AN

0-150

AZ

0-1500

BM

0-10K

BW

0-50K

AP

0-200

BA

0-2000

BP

0-15K

BZ

0-60K

AR

0-300

BC

0-3000

BQ

0-20K

EC

0-75K

AU

0-500

 

 

BR

0-25K

EG

0-100K


CAT NO. MODEL DEscRIPTION AVAIL PRICE 
VI571   571A   Absolute pressure transmitter (up to 15K), Specify Range   Yes   2,106,000 
VI572   572A   Absolute pressure transmitter (20K and above), Specify Range   Yes   3,013,200¡¡
VI573   571S   Sealed gauge pressure transmitter (Up to 15K), Specify Range   Yes   1,933,200¡¡
VI574   571S   Sealed gauge pressure transmitter (20K and above), Specify Range   Yes   2,797,200
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