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ÇöÀçÀ§Ä¡ : Home > DAVIS (»óÇ° 25000°³) > ±³Á¤±â Calibrators > ¾Ð·Â Pressure

DAVIS Á¾ÇÕ °èÃø±â - Çѱ¹´ë¸®Á¡ ÄÚ¸°½º°è±â(ÁÖ)
 
DR7750011 Portable Pressure Calibrator
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Designed for use in remote locations where AC power is not available
Designed for use in remote locations where AC power is not available, the DPI 603 enables pressure instrumentation to be serviced and calibrated.

The instrument features the capability to generate pneumatic test pressures with an integral hand-pump up to 300 psi. A volume adjuster provides fine control of the desired test value and a venting valve enables pressure release without disconnection of the device under test.

An optional pressure/vacuum switching facility can also be provided, which enables the hand-pump to source vacuum down to -22" Hg or pressure up to 300 psig.

To facilitate pressure transmitter testing and calibration a 24 VDC power supply is provided and the ability to monitor the current loop from 0 to ¡¾55 mA DC.

For loop verification, the DPI 603 can also output a single 12mA test value, or provide a passive sink if required.

The clear LCD allows readout of pressure, voltage and current parameters with the ability to show current or voltage simultaneously with pressure.

 
Features
  • Accuracy ¡¾0.075% F.S.
  • Integral pressure generation
  • Standard ranges up to 300 psig
  • 5 digit LCD, multiple engineering units
  • Dual pressure & electrical readout
  • Transmitter supply & measurement
  • Current loop verification test
  • Vacuum generation available
 
SPECIFICATIONS

Pressure Measurement Specification

Operating Pressure Ranges

Standard full scale ranges can be specified of -14.7 psig to +15 psi, +30 psi, 100 psi or 300psig
Overpressure The rated pressure can be exceeded by 2 x causing negligible calibration change, subject to a maximum safe working pressure of 350 psi
Pressure Media Fluids compatible with 316 Stainless Steel, Hastelloy C276, Nylon, Viton and brass
Accuracy Combined non-linearity, hysteresis an repeatability ¡¾0.075% F.S. for positive or negative pressures ¡¾1 digit
Temperature Effects Over 32¡Æ to 105¡Æ, the averaged Span temperature coefficient will not exceed 0.007% of reading/¡ÆF
Digital Indicator Readout & Display ¡¾99999 capability, 0.54" LCD digits with additional 16 text characters
Pressure Scale Units 24 scale units are provided psi, lb/ft2, inHg, inH2O, ft of H2O, (40¡Æ and 68¡ÆF) torr, atm, Pa, kPa, MPa, kPa, mbar, bar, kg/cm2, kg/m2, mmHg, cmHg, mHg, mmH2O, cmH2O, mH2O, Special 2 units are presented on the display
Display Overload Instruments are capable of nominal 120% F.S. Above this, an overrange error code is displayed
Resolution ¡¾0.005% F.S. maximum
Response Nominal rate of three readings per second on the digital display
Zero Control Offset correction for pressure and electrical scales by key-press, protected against accidental use
Calibration Control Front panel key-pad calibration controls for pressure and electrical ranges
Position Effect Negligible
Electrical Specification 
Electrical Inputs 
Voltage Measurement 
Range ¡¾50V
Accuracy ¡¾0.15% of reading ¡¾0.02% F.S.
Temperature Coefficient ¡¾0.006% reading/¡ÆF
Current Measurement 
Range ¡¾55mA
Accuracy ¡¾0.075% of reading ¡¾0.005% F.S.
Temperature Coefficient ¡¾0.006% reading/¡ÆF
Electrical Outputs 
Voltage output 24V nominal, floating, 25mA maximum
Current output Loop check fixed 12mA nominal, source or sink
Power Supply 
Battery powered 4 x 1.5V zinc carbon "D" cells, 50 hours nominal continuous operation with no load on output terminals. Battery low condition indicated by display symbol 
Safety 
IEC 1010
EMC immunity to IEC 801-804
Certification CE marked
Physical Specification 
Weight 9 lbs
Dimensions 12.6" x 7.7" x 5.0" nominal
Pressure Connection 1/8" NPT female
Carrying Case Supplied standard and with a complete set of accessories

CAT NO. MODEL DEscRIPTION AVAIL PRICE 
DR7750011   DPI 603   PORTABLE PRESSURE CALIBRATOR   Yes   2,700,000 
DR7750012   DPI 603 VACUUM   PORTABLE PRESS. CALIBRATOR W/ VAC.CAPABILITY DPI603A 300PSIG   Yes   3,153,600 

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DAVIS Á¾ÇÕ °èÃø±â - Çѱ¹´ë¸®Á¡ ÄÚ¸°½º°è±â(ÁÖ)
 
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