DPGM409DIFF Series



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  • Wet/Wet Differential Pressure Measurement
  • 5-Point NIST Traceable Calibration
  • Easy to Read 25 mm (1") Backlit LCD Display
  • High 0.08% Accuracy
  • Hi and Lo Alarms Standard
  • MIN/MAX/AVG Reading
  • Analog Output: User selectable 0 to 5 Vdc, 0 to 10 Vdc or 4 to 20 mA (external 24 Vdc power supply required for all analog output types)
  • Bar Graph on Display
  • Free Downloadable Software
  • Wireless Transmitter Option Sends Reading to Remote Location
  • CE Certified
  • Battery Powered with Long Battery Life
  • NEMA 4X (IP65) Enclosure
  • Metric Ranges and Pressure Connections
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OMEGA’s DPGM409 digital differential pressure gauge incorporates a rugged 316 SS enclosure designed for washdown and marine applications with a precision 0.08% accuracy pressure transducer and 316L SS wetted parts and body. The result is an extremely durable digital pressure gauge. You get all the durability and stability of the micromachined silicon sensor in a rugged NEMA 4X (IP65) package.

Wireless Option: Add suffix "-W"to part number for extra cost option

NOTE: Models with wireless option are approved for use in the U.S., Canada and Europe only.

CE Compliant: Meets EN1326-1: 2006 for industrial locations with analog output cables <3 m (9.8') and supplied ferrite core
Accuracy (Combined Linearity, Hysteresis and Repeatability): ±0.08% BSL
Storage Temperature: -40 to 82°C (-40 to 180°F)
Operating Temperature: -18 to 66°C (0 to 150°F)
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: 100M Ω @ 50 Vdc
Pressure Cycles: 1 million minimum
Long Term Stability (1-yr.): ±0.1% FS typical
Analog Output: User selectable 0 to 5 Vdc, 0 to 10 Vdc or 4 to 20 mA (external 24 Vdc power supply required for all analog output types)
Notes: 1. Bidirectional ranges have a unidirectional analog output equal to their full span; i.e. -15 to +15 psi = 0 to 10 Vdc.
2. Analog output is independently scalable Set jumper to Select Current or Voltage: Software selection of 0 to 5 Vdc, 0 to 10 Vdc, or 4 to 20 mA

Analog Output Cable: 2.7 m (9') with ferrite core (included)
Analog 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
    70 Bar Range: = 3 times range
Hi-Side Containment Pressure (Differential):
    25 to 350 mb: To 1000 psi
    1 to 70 bar: To 3000 psi
Display: 4-digit LCD with user selectable backlighting, (9999 count) 25 mm (1") 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
Power: One 3.6V lithium 8.4 Ah capacity (C cell) included (two included with wireless option) (replacement battery model no. BATT-C-3.6V)
Battery Life (Typical): Up to 4-years
Enclosure Material: 316 Stainless Steel and ABS center gasket
Enclosure Finish: Electropolished
Enclosure Environmental Rating: Weatherproof, NEMA 4X (IP65)
Sensor Wetted Parts: 316L stainless steel
Pressure Connection: G ¼ male
    Display: 115 D x 89 W x 74 mm H (4.5 x 3.5 x 2.9")
    Sensor: 72 to 89 mm L (2.8 to 3.5") below display, 80 mm (3.1") wide"
Weight: 1 kg (2.2 lb) 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) (USB connection is for set-up only)
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 (400') outdoors (line of sight); Up to 40 m (130') 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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