In-line signal conditioner has low impedance line drive

2nd February 2017
Posted By : Alice Matthews
In-line signal conditioner has low impedance line drive

DJB Instruments has announced the QV/04 in-line signal conditioner which joins the QV/02 and replaces the outgoing QV/01. All products in the QV range of in-line converters provide charge/voltage conversion when supplied with a standard IEPE supply current in the range of 4-20mA. 

The low impedance line drive maintains signal integrity even over distances of several hundred metres, requiring minimal configuration to interface with vibration analysers and data acquisition systems. 

The QV/04 offers a solution for all applications. Its small size and low mass are useful for compact multi-channel solutions, both rugged and flexible. This low package size minimises mass effect on cables when installed into the signal cable lines.


  • Thick film hybrid charge/voltage converter housed in stainless steel body
  • 10/32 UNF microdot connector on input and output
  • Suitable for high temperature operation up to 185°C
  • Lightweight, weighing 20gm
  • The QV/04 is suited to most applications involving piezoelectric sensors requiring long cables.

The QV/04 is available with a range of gain options to suit a variety of different charge output accelerometers.


  • QV/04-0.1 = 0.1mV/pC gain
  • QV/04-1 = 1mV/pC gain
  • QV/04-10 = 10mV/pC gain

Neill Ovenden, DJB’s Managing Director said of the launch: "We had a busy 2016 working on a fairly comprehensive new product launch plan for 2017, the QV/04 is the first of many products and although it seems simple it offers the most compact solution for in-line signal conditioning currently on the market. As always with DJB products we are proud to continue the growth of our UK based manufacturing in a market otherwise dominated by the USA suppliers."

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