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Gilson Engineering Sales, Inc. 


February, 2012 4
Precision Digital ProVu just got Smarter
Leser Safety Relief Valves
TDR Level Transmitter with Modbus
Upcoming Events
Tech Tip, Easy way to Monitor HART info
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Precision Digital ProVu just got Smarter


Precison Digital is pleased to announce the newest addition to the ProVu Series of process displays with the PD6060, adding dual input capability and math capabilities. Each input can independently be configured for type, linearization, and scaling. The math functionality includes:

  • addition,
  • difference,
  • average,
  • multiplication,
  • division, and more.

With available options like dual loop power supplies for field transmitters and an analog output that is assignable to either input, or to the resulting math function, a wide array of applications open up like intake screen differential, totaling multiple flows, chemical pacing, etc. To learn more about the PD6060, visit for videos, datasheets, manuals and more.  


PD video

Click to view video presentation of PD6060 


Download PD6060 datasheet

 Leser Safety Relief Valves


Leser valveGilson Engineering Sales of Florida now represents  Leser (pronounced Laser) Safety Relief valves for the process market in Florida. Leser carries over 5 million dollars worth of inventory in their Charlotte, NC facility for shipment to customers in one week or less. Along with fast deliveries, the key product features of Leser Safety Relief valves are: 



  • Single Trim design so there is one relief valve for steam, gasses and liquids which greatly reduces a customer's spare parts inventory. Also, this unique trim design allows the safety relief valve to be mounted in the horizontal position if required.
  •  One piece Spindle which greatly reduces friction and allows better alignment.
  • Valves include API, Compact performance, High Performance, Sanitary service and teflon lined valves for critical service.
  • Leser defines set pressure as "initial audible discharge" (not "pop"). This avoids damage to seats during set pressure testing and allows for increased tightness closer to set point.
  • Leser Safety Relief valves are typically 15-25% less in price than major competitors. 
    View video of Leser safety valve
    View video of Leser safety valve


  TDR Level Transmitter with Modbus 

Drexelbrook Impulse TDR

Drexelbrook's IMPULSE TDR (Time Domain Reflectometry) level transmitter is now available with Modbus RS-485 digital communication. TDR is also referred to as guided wave radar. TDR reliably measures the level, distance or volume of liquids and slurries at an extremely competitive price (starting at $1,200). The technology is advantageous because it is unaffected by changes in process electrical characteristics. All menus in the Impulse are configured in plain English via front push buttons or our 1 page PC software.


Up to 32 devices can be multi-dropped on the same bus and connected to a single master controller (PLCs/SCADA systems) saving you unnecessary cost of analog input modules.


The IMPULSE Modbus interface offers a wide variety of modes and data formats including ASCII, RTU, floating point, integer, 32-bit, 16-bit and more to support the customer's PLC requirements. In addition, the display and keypad are standard on the IMPULSE, unlike competitive alternatives priced at $300 for a display option. The power requirement for the IMPULSEŽ Modbus is 11-30VDC which is compatible with solar batteries typically used in remote locations.


Download IMPULSE datasheet


Upcoming Events 

 Join us at one of the following events that Gilson Engineering will be exhibiting in:




Feb 29th and March 1st , 7:00 AM to 5:00 PM

International Society for Pharmaceutical Engineering Aseptic

Conference Location: Grand Hyatt, Tampa Bay  




April 30 - May 1

Florida Water Resources Conference

Renaissance Resort at SeaWorld, Orlando




Tech Tip

Problem: Our non-HART DCS can only read the primary variable signal from our multivariable transmitter but I would like to monitor the other information in the HART signal.



Solution: The Moore Industries model SPA HART loop monitor connects in the control room and provides a 4-20mA output representing any one of the other HART variables. Its three relays can be set to alarm on an out-of-range condition for any of the variables. A fourth relay monitors the overall "health" of your HART transmitter.


Other applications for HART loop monitor:


  • Coriolis flow meter: Mass flow, density, volumetric flow, temperature
  • Valve positioner: Valve position, limit alarm
  • Interface level from guided wave radar level transmitter