PDW30 Point-to-Point Wireless Process Signal Bridge

The point-to-point wireless signal transmitter PDW30 is the ideal solution for transmitting 4-20 mA, Modbus signal from your sensor to a monitoring device, the PDW30 can even be configured to transmit a low voltage switch closure, a great feature for pump control. Point-to-multi point version is available, contact us for more details. The PDW30 eliminates the need for running signal wire for hundreds of feet.


  • 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 Outdoor, 500 Ft Indoor Range

  • Inputs: Analog (4-20 mA, 0-10 V, 0-5 V, 1-5 V), Digital, and RS-485 Modbus Communications

  • Outputs: Analog (4-20 mA), Digital, and RS-485 Modbus® Communications

  • Remote or Attached Antenna

  • Repeaters and Directional Antennas Available

  • Flanges for Wall or Pipe Mounting

  • Software Available for Even Easier Setup

  • NEMA 4X, IP68 Enclosure

  • Power: 12-28 VDC

  • Approvals: None

  • Warranty: 3 years 

PD6600 Series loop leader loop-powered process meter

These loop-powered 1/8 DIN digital panel meters can be installed virtually anywhere to provide convenient and informative displays of any 4-20 mA signal. One of the most convenient features of these instruments is their dual line display which is typically used to display the process variable on the 5-digit alphanumeric top line and the units or a tag on the 8-digit alphanumeric bottom line. Another common setup is to display the input in one scale on the top line (such as feet) and another scale on the bottom line (such as gallons). Both of these lines use 14-segment, alphanumeric characters for clear indication of tags, units or alarm messages.

Further enhancing the display on these instruments is a 20-segment bargraph available on the PD6604 that also includes a numeric value of the percentage the bargraph represents.

There is even a model that displays level in feet and inches for customers who prefer to see their levels represented that way rather than in decimal format.

Related Products

These loop-powered meters can be installed virtually anywhere because they get their power from the 4-20 mA loop and therefore require no separate power source. And they only drop 1.5 V (4.5 V with backlight), so they add very little burden to the loop. Additional features that allow these instruments to be installed virtually anywhere include a NEMA 4X, IP65 front panel, an operating temperature range of -40 to 167°F (-40 to 75°C) (for safe area products), conformally coated PCBs, and a backlit LCD that can be read in bright sunlight or dimly lit areas. Finally, there are intrinsically safe and nonincendive versions of these instruments that can be installed in hazardous areas.

Free, PC-based, software that connects to the meter via a micro USB cable is available for programming and setup of the meters. In addition, the meter can be programmed, setup and operated via the four front panel buttons. Three of these buttons can be used as function keys. In addition, a digital input is standard and is particularly useful for remote reset of the alarms or to trigger an alarm.

All models come equipped with two open collector outputs and are available with two solid state relays and 4-20 mA analog output options. The open collector outputs are useful for alarm indication or pulse output. The relays can be programmed for alarm indication, on/off control, or pump alternation.


  • 4-20 mA Input

  • Loop-Powered Process Meter

  • 1.5 Volt Drop (4.5 Volt Drop with Backlight)

  • Loop-Powered Backlight with Red Backlight for Alarm Conditions

  • NEMA 4X, IP65 Front

  • -40 to 167°F (-40 to 75°C) Safe Area Operating Temperature Range

  • Free PC-Based USB Programming Software

  • 5-Digit Alphanumeric Top Line

  • 8-Digit Alphanumeric Bottom Line

  • Displays Level in Feet & Inches up to 999 Feet, 11 & 15/16 Inches

  • 20-Segment Bargraph with Numeric Percent Indication

  • Conformal Coated PCBs for Dust & Humidity Protection

  • Two Open Collector Outputs Standard

  • Optional Loop-Powered Solid State Relays

  • Optional 4-20 mA Analog Output

  • Relay Pump Alternation Based on Level and Runtime

  • Display Relay Runtime and Cycle Count

  • UL & C-UL 61010 Listed for Electrical Safety

  • UL & C-UL Listed as Intrinsically Safe and Nonincendive

  • ATEX and IECEx Certified as Intrinsically Safe

6308PT Single Measurement pH Analyzer

1/4 DIN panel mount pH single parameter analyzer with electrode efficiency display function. Features pH linear or antilog transmitter output, hysteresis control and uninterrupted operation during pH calibration. Has one 4-20mA output, 5 relays and a RS-485 communications interface. Graphical display. 115/230 VAC.

  • Bright, graphical LCD display, 1.5 x 2.25

  • Simultaneous measurement and analysis

  • 1/4 DIN watertight, IP65 rated enclosure

  • Reversible & isolated 4 to 20ma output with adjustable bandwidth

  • Continuous controller / relays operation during calibration

  • 4-digit password security protection

  • Programmable set point hysteresis

  • Automatic temperature compensation

  • CE approved

  • Built in ISO9001 certified facility

  • Membrane keypad with audio feedback

  • Power down, non-volatile memory backup

  • RS-485 output

  • Multiple spst on/off relays

  • Embedded self diagnostic program

  • High 50/60 hz noise rejection

6309POT pH & ORP dual-parameter analyzer with RS-485 online connectivity

pH & ORP analyzer,1/4 DIN panel mount IP-65 case. Features 2 pH and 2 ORP fully programmable relays and one for temperature. RS-485 interface, password protected with individual ID’s. 4-20 mA analog output is fully programmable, assignable & reversible. Graphical display. Tinned lead connectors. CE Approved.

pH/ORP/temperature measurement & control

  • Display pH electrode efficiency

  • Reversible & isolated 4~20ma output

  • RS-485 output

  • Bumpless calibration

  • Graphic LCD dispaly,128 x 64with backlight

  • Membrane switch with audio feedback

  • Auto temp. compensation

  • High 50/60 hz noise rejection

  • Pipe/wall/panel mounting

  • 1/4 DIN watertight enclosure

  • One programmable relay for temp.

  • CE approved

  • Programmable linear/ ORP current output or programmable linear/ anti-logarithmic current output.