BPD17 – Single Input Controller – pH/Redox(ORP)

BPD17 – Single Input Controller – pH/Redox(ORP)

The BPD17 is a microprocessor controlled instrument range offering individual controllers for the measurement parameters Electrodeless (Inductive) and Contact Conductivity, pH/Redox (ORP) Measurement. To achieve this the instrument utilises a clear multifunction LCD to display the primary reading and temperature, show operational status and to provide an intuitive user interface.

  • Description
  • Technical specifications
  • Downloads

As standard the instrument is simple to install with a new custom 144x144mm IP66 rated Wall-mount instrument, however with the addition of a suitable mounting kit it can either be installed as a Panel-mount or Pipe-mount instrument.

The instrument has two onboard volt-free normally open-relays with adjustable setpoint value and hysteresis. Either one can be set to activate on a High, Low or Band operation allowing the instrument to be used in a variety of dosing and or control applications. Additional setpoint functions include delayed activation and dose alarm timer, whilst the status of the relays can be seen via the main screen of the instrument. The set points relays may also be given the function as a clean initiator to provide automatic sensor cleaning, the clean duration, recovery time and interval period all programmable.

Additionally, the instrument features one industry standard, isolated, 0/4-20mA current output that features adjustable scaling and selectable on-error states, allowing the instrument to transmit the primary reading for remote monitoring purposes. Also fitted are two digital inputs operating on either closed or open contact which allow the instrument to be triggered by No Flow, Low Tank Level, Interlock or Off-line functions that forces the relays to deactivate and the current output to a pre-defined state.

Depending upon version purchased the instrument may be powered by either 85-265V AC or 12-30V DC.


  • Power supply 85-265vAC (24vDC option)
  • 2 off Independent digital inputs
  • Accurate at zero DO
  • Measurement and Temperature input
  • 2 off Programmable relay outputs
  • 1 off Isolated scaleable 0/4-20mA output
  • Software Upgrade via Micro(SD) Card
  • Also available here for Galvanic Dissolved Oxygen (BGD17)

Enclosure: The enclosure should be a Multi-mount version suitable for panel, surface or pipe/rail mounting, using one accessory kit for panel mount & a second kit for surface/pipe/rail mounting. The panel mount version could be 144 x 144mm making it a shallow design for panel mounting.


  • Front panel 144 x 144mm
  • Panel cut out: 138 x 138mm
  • Depth behind panel: 77mm maximum
  • Surface mount Bracket

Rail / Pipe mounting Bracket
Hinged / retained front
Cable Glands / Connectors: Maximum of 5, 2 x M20, 3 x M16

Material: ABS – Coloured Pantone 281C

Protection: IP66 using BS EN 60529: 1992

Equipment Safety: 2006/95/EC using BS EN 61010-1: 2010

Ambient temperature: -20 +55°C Relative Humidity 5 to 95%, non-condensing.

Front Panel Switches: Keypad operating switches with tactile feedback. Switches mounted behind label or membrane switch. Rubber switches as per the MXD70 series to be considered?

Front Panel: The front panel design should allow for a low-cost option for OEM labelling.

The following downloads are available for the BPD17 – Single Input Controller – pH/Redox(ORP)
Download BPD17 Specification Sheet