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DPI 740 Series - Precision Pressure Indicator

DPI 740 Series - Precision Pressure Indicator

 

The DPI 740 is a portable battery powered precision barometer, providing outstanding capabilities in a hand-held package.This instrument can confidently be used in both laboratory and field applications as a first-class barometric reference device, with the recommended recalibration period being one year.

 

 

 

 

DPI 740 Series Specifications

  • Ranges to 103 inHg absolute
  • Accuracy: ±0.004 inHg absolute
  • 6 digit resolution LCD display
  • Multiple pressure scales and aeronautical units
  • Alkaline or rechargeable batteries
  • Lightweight hand-held rugged design
  • RS 232 output

The DPI 740 is a portable battery powered precision barometer, providing outstanding capabilities in a hand held package. The fundamental sensor technology employed within this instrument is the Druck resonant pressure transducer (RPT). This vibrating element sensor not only provides accuracies of ±0.004 inHg (±0.15 mbar) but equally important has a calibration stability of better than 100 ppm per year. The DPI 740 is widely used in laboratory and remote field applications for precision pressure reference.

Pressure Measurement

Operating Ranges 22 to 34 inHg (750 to 1150 mbar) absolute
1 to 38 inHg (35 to 1310 mbar) absolute
1 to 77 InHg (35 to 2620 mbar) absolute
1 to 103 inHg (35 to 3500 mbar) absolute
Maximum Safe Working Pressure 130 inHg (4375 mbar) absolute
Pressure Media Compatible with non-corrosive gases
Insensitive to media density
Readout and Display 999999 capability LCD digits 0.54 in (13.6 mm) high with additional 16 text characters.
Display Overload Instrument capable of nominal 110% full scale (FS) for each range. Above this, error code will flash.
Resolution 0.0003 inHg (0.01 mbar)
Response 2 readings per second nominal on digital display
Operating Modes A) Local pressure (QFE)
B) Sea level pressure (QFF) from user set height
C) Altitude above user set datum
Process Features Maximum/Minimum, tare and programmable filter available in all operating modes.
Pressure Units 24 pressure units plus altitude in feet (ft) or meters (m)

Performance

Accuracy ±0.02% FS
For all pressure ranges includes: Combined non-linearity, hysteresis, repeatability, and temperature effects over 15°F to 120°F (-10°C to 50°C).
Optional enhanced barometric accuracy available (see Option A).
Stability Better than 100 ppm per annum.
Temperature Range Operating: 15°F to 120°F (-10°C to 50°C)
Storage: -40°F to 160°F (-40°C to 70°C)
Safety Electrical and mechanical safety: EN61010
EMC emissions: EN50081-1
EMC immunity: EN50082-1
Certification: CE Marked
Position Effect Negligible
Power Supply Three each 1.5 V alkaline AA batteries for 20 hours nominal continuous operation. Programmable power down prolongs battery life. Battery low indicated by display symbol. Optional rechargeable NiCad batteries and external power adapter/charger unit available (see Option B).
Communication Interface RS232 via six-way LEMO socket (see Option C)

Physical

Pressure Connection Accepts 1/4 in OD / 5/32 in ID tubing (6 mm OD / 4 mm ID)
Weight 1.1 lb (0.5 kg) nominal
Dimensions 7.5 in x 3.5 in x 1.4 in (190 mm x 90 mm x 36 mm) nominal

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DPI 740 Series - Precision Pressure Indicator Brochure DPI 740 Series - Precision Pressure Indicator  Brochure
DPI 740 User Manual DPI 740 User Manual DPI 740 User Manual DPI 740 User Manual DPI 740 User Manual DPI 740 User Manual DPI 740 User Manual DPI 740 User Manual


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