Druck DPI740 Precision Pressure Indicator

Product Overview: Druck DPI740 Precision Pressure Indicator

Druck DPI740 Precision Pressure Indicator

The Druck DPI740 Precision Pressure Indicator 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.

• 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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