Digital Pressure Gauge for Differential Pressures for High Accuracy

The DPGM409 digital differential pressure gauge from OMEGA incorporates a rugged 316SS enclosure designed for marine and washdown applications with a precision 0.08% accuracy pressure transducer and 316L SS wetted parts and body. The result is a digital pressure gauge that is extremely durable.

This differential pressure digital gauge functions perfectly with hydraulic oil, air or water as well as several other fluids.

  • Hi and lo alarms standard
  • Easy to read 25 mm backlit LCD display
  • 5-Point NIST traceable calibration
  • Wet/wet differential pressure measurement
  • High 0.08% accuracy
  • MIN/MAX/AVG reading
  • Bar graph on display
  • IP65 (NEMA-4X) enclosure
  • Battery powered with extended battery life
  • G¼ pressure connections standard - others available
  • User selectable analogue output 0 to 5 Vdc, 0 to 10 Vdc or 4 to 20 mA
  • Wireless transmitter option sends reading to remote location and comprises of charting and data logging software

Specifications

The key specifications of the DPGM409 digital differential pressure gauge are as follows:

  • Accuracy (Combined Linearity, Hysteresis and Repeatability): ±0.08% BSL
  • Storage Temperature: -40 to 82 °C
  • Operating Temperature: -18 to 66 °C
  • Thermal Effects (Over Operating Range):
    • Zero Balance:
      • Ranges 25 mb to 70 mb: ±1% span
      • Ranges >70 mb: ±0.5% span
    • Span Setting:
      • Ranges 25 mb to 70 mb: ±1% span
      • Ranges >70 mb: ±0.5% span
  • Minimum Resistance Between Transducer Body and Any Wire: 100MO @ 50 Vdc
  • Pressure Cycles: 1 million minimum
  • Long Term Stability (1-yr.): ±0.1% FS typical
  • Analogue Output: User selectable 0 to 5 Vdc, 0 to 10 Vdc or 4 to 20 mA (external 24 Vdc power supply required).
    Set jumper to Select Current or Voltage: Software selection of 0 to 5 Vdc, 0 to 10 Vdc, or 4 to 20 mA
    Bidirectional ranges have a unidirectional analogue output equal to their full span; i.e. -15 to +15 psi = 0 to 10 Vdc.
    Analogue output is independently scalable
  • Analogue Output Cable: 2.7 m with ferrite core (included)
  • Analogue Output Accuracy: 0.08% typical (0.15% maximum in RF field @ 10V/m)
  • Line/Static Pressure: 500 psi maximum applied to both sides simultaneously
  • Proof Pressure (differential):
    • 25 mb: = 10 times range
    • 70 mb: = 6 times range
    • 170 mb to 50 Bar: = 4 times range
  • Hi-Side Containment Pressure (Differential):
    • 25 to 350 mb: To 1000 psi
    • 1 to 50 bar: To 3000 psi
  • Display: 4-digit LCD with user Selectable backlighting, (9999 count) 25 mm character height
  • Sample/Display Range: User selectable from 0.38 to 30 seconds (preset to 1/second)
  • Computer Interface: USB connection for set-up, cable included
  • Pressure Connection: G ¼ male
  • Power: One 3.6V lithium 8.4 Ah capacity (C cell) included (two included with wireless option) (replacement battery model no. BATT-C-3V)
  • Battery Life (Typical): Up to 4-years
  • Enclosure Material: 316 Stainless Steel and ABS centre gasket
  • Enclosure Finish: Electropolished
  • Enclosure Environmental Rating: Weatherproof, IP65
  • Sensor Wetted Parts: 316L stainless steel
  • Dimensions:
    • Display: 115 D x 89 W x 74 mm H
    • Sensor: 72 to 89 mm L below display, 80 mm wide
  • Weight: 1 kg typical depending upon configuration
  • Front Panel Functions:
    • Backlight: Manually turns backlight on/off
    • Min/Max: Recalls min/max values
    • Zero/Clear: Zeros display or clears min/max
  • Software Settings (via USB)
  • Update Rate: 4 options, 10, 5, 2, 1 times per second
  • Units: psi, inHg, inH2O, bar, mbar
  • Lock: Allows the lock-out of front panel functions
  • Alarms: User selectable “High” and “Low” alarm limits (open collector)
  • Backlight: On/Off, 10 seconds, 30 seconds, 1 minute, 5 minute
  • Wireless Transmitter (Optional): Channel number, transmission rate, alarms, sensor offset, chart recording, data logging
  • Calibrate: Zero and Span
  • Overrange Indication: “_ _ _ _”

Wireless Option Specifications

  • Transmit Sample Rate: User programmable from 1 sample/2 min to 1 sample/2 sec
  • Radio Frequency (RF) Transceiver:
    • Carrier: ISM 2.4 GHz
    • RF Output: 10 dBm (10 mW)
    • Range of RF Link: Up to 120 m outdoors (line of sight); Up to 40 m indoors/urban
  • Included Software: Requires Windows® 7 (32 bit); XP, Vista
  • Data Transmission to Host: Pressure reading, ambient temperature reading, RF transmit strength and battery level

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