Advanced Sensor Element Interfaces

Keynes Controls design and manufacture component parts for Advanced Sensor Element Interfaces. The parts include dedicated circuit boards, software and interfaces. Keynes has a wide range software library for different digital communication networks enabling fast and reliable products to be developed, manufactured and supplied.

Designs for Accelerometers. Piezo-restive and Silicon Pressure Sensors, Thermocouples, Temperature Sensors, Image Intensifiers.

The sensor interface supports SDI12 or RS485 digital communication and are fully integrtated into the free issue QLOG applications software.

Part Number:  NP-PRES-200

Silicon and Piezo-resistive sensor interface
QLOG real-time load cell comparison results chart
Precision Silicon Pressure sensor elemenets
Precision Pressure Sensor Elements
Precision Silicon Pressure Sensor Element
Differential Silicon Pressure sensor element

REDOX Reaction

REDOX PCB SDI12

Reduction and oxidation measurements create important data for analysis of wet soils. These measurements are actually recordings of voltage (EH) over time between a reference electrode and a sensor electrode inserted into a soil. The sensor electrodes are usually made of platinum wire (Pt electrode).

The NP-REDOX-1-SDI12 PCB uses Platinum electrodes to measure the REDOX reaction in soil. The sensor PCB is supplied fully tested, integrated into the Keynes Controls Q-LOG software.

The NP-REDOX-1-SDI12 PCB supports 3 x REDOX Sensor inputs 1 x Reference Sensor and 1 x SDI12 Communications Port.

Part Number:  NP-REDOX-1-SDI12

Soil REDOX Reaction Sensor Interface

OEM Customisation

The PCB is designed and manufactured by Keynes Controls and as such can be customised for OEM applications.

Conductivity Sensor Interfaces

The Conductivity sensor interface set is a miniature PCB set designed to be fitted inside a submersible sensor. The PCB offers full isolation to the sensor element when not being used for measurement operations, provides a wide dynamic range of measurement for 10 to 100,000 micro-Siemens/cm with good accuracy and resolution over the full range of measurements.

Example Conductivity Sensor PCB Set
Miniature Conductivity / Isolation PCB Set
ARGES Conductivity Sensor by Keynes Controls v2

ION Selective Electrode Sensors and Interfaces

Keynes Controls design and manufacture Intelligent ION Selective Electrode Interfaces (ISE), which are used to convert the change in concentration of a specific ion contained in a dissolved solution into an electrical potential. The output voltage of the ion-selective-electrode is related to the ionic activity according to the Nernst Equation.

Submersible ARGEs pH sensor

Sensors based upon this technology are used in Analytical Chemistry. biological and biochemistry applications. where measurements in an aqueous solution is required.  The Keynes Controls ARGES range of single-ion-electrode sensors use this technology.

Intelligent ARGES Conductivity Sensor
Submersible ARGEs Nitrate Sensor

The selective ion sensor interface is fully integrated into the free issue QLOG applications software.

The QLOG software enables the interfaces to be fully configured, make measurements, display results in charts and panel meters with results stored into spreadsheet format text files (CSV) for later analysis.

Contact Keynes Controls for details for further details.

Intelligent Sensor Design and Construction
Miniaturised Sensor PCB assembly for hydrocarbon boiler sensor
Q-LOG Single Probe ARGES Tryptophan Sensor Display.
ARGES Nitrate Sensor mounted 7 Port SONDE
Tryptophan - CDOM comparison real-time chart
Media Converter USB
Media Converter USB