PDW90-FN Point-to-Multipoint Wireless Process Signal Field Unit

Brand: Precision Digital Corporation

PDW90 field units transmit analog, digital, and Modbus® inputs from any location in the field to the PDW90 base station.

Just set the network ID and Modbus address and put the field unit wherever there is a 24 VDC power and a process signal.

Once it has been connected to the base station, it will transmit all signal connections wirelessly.
  • Signal Wire Replacement in a Rugged, Industrial Housing
  • Inputs and Outputs on Both Field Units
  • Simple to Order, Configure, & Install
  • 1 Mile Line-of-Sight, 500 Ft Indoor Range
  • Inputs: Analog (4-20 mA, 0-10 V, 0-5 V, 1-5 V), Digital, and RS485 Modbus Communications
  • Outputs: Analog (4-20 mA), Digital, and RS485 Modbus® Communications
  • Remote or Attached Antenna
  • Repeaters Available
  • Flanges for Wall or Pipe Mounting
  • Software Available for Even Easier Setup
  • NEMA 4X, IP68 Enclosure



  • 32-Character dual-line alphanumeric dot matrix LCD display with backlight (4.68 mm x 2.21 mm characters)

Display Orientation

  • Display may be Mounted at 180° from default orientation

Network ID

  • Field selectable: 0 - 99

Programming Methods

  • Four Programming Buttons (Behind Glass) or PC with PDW Manager Software.


  • All Inputs and outputs are calibrated at the factory. Recalibration is recommended at Least every 12 months.

Process/ Digital I/O Display

  • Press the display button once to display the present analog input and output, press the display button again to display digital I/O states.


  • A Programmable password restricts modification of programmed settings.


  • 12-28 Vdc, 5 W max

Non-Volatile Memory

  • All programmed settings are stored in non-volatile memory for a minimum of ten years if power is lost.


  • 500 V


  • Relative Humidity: 0 to 90 % Non-Condensing
  • Storage Temperature Range: -40 to 85° C
  • Operating Temperature Range: -40 to 65° C (Display inoperable < -20° C)


  • Removable Screw terminal blocks accept 16 to 30 AWG wire.


  • Cast Aluminum with Glass Window, 0.30 % max copper Content, corrosion resistant Powder Coating, color: Blue. NEMA 4X/IP68. Two 1/2” NPT threaded conduit openings. One 1/2” NPT Stainless Steel conduit plug with 10 mm hex key Fitting installed.


  • May be mounted directly to conduit. Two mounting holes for 1.5” pipe or wall mounting. See mounting dimensions on page 15 for mounting space requirements.

Tightening Torque

  • 2.5 lb-in (0.28 Nm)

Shipping Dimensions

  • 17” x 14” x 9” (43.2 cm x 35.6 cm x 22.9 cm) (L x W x H)

Shipping Weight

  • 5 lbs (2.27 kg)


  • 3 Years Parts & Labor


  • 900 MHz


  • 500 ft (152.4 m) indoor
  • 1 mi (1.61 km) outdoor (Line-of-sight)
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