Can the FU20F or FU24F SENCOM sensors be used to measure pH and ORP at the same time?

Yes, the SENCOM Module in these sensors allows a Modbus Master to
connect using Modbus RTU protocol and access the following data:

  • pH
  • Temperature compensated pH
  • ORP
  • pH compensated ORP
  • rH
  • Temperature
  • Junction resistance value
  • Sensor details (Model, Serial Number, production date)
  • Sensor calibration data (zero, slope, temperature offset)
  • Sensor status signals (e.g. Glass impedance detection)

As shown in the diagram above, our pH is calculated by subtracting value B from value A. To do this the B value is stored inside the sensor and can be displayed independently at any time. Since ORP is simply the value of B, we can easily display both pH (A-B) and ORP (B) without any issues.

Related Products & Solutions

2-Wire SENCOM™ SMART Sensor Platform

SENCOM technology allows pH and ORP sensors to transmit and receive data when connected to FLXA202 or FLXA21 transmitter or to any PC with the SPS24 software installed. Digital or Smart sensors maintain specific measurement and calibration data on an integrated chip along that is an integral part of the sensor. 

2-Wire Transmitter/Analyzer FLXA202/21

The FLEXA™ series analyzers are used for continuous on-line measurements in industrial installations. With an option for single or dual sensor measurement, they are the most flexible two-wire analyzer available.

All-in-One Digital Smart pH/ORP Sensor FU20F

All-In-One pH and ORP digital SMART sensor that keeps the motto "Simple is best" while combing the sensor with built-in intelligence and direct digital communication. 

All-in-One Digital SMART pH/ORP Sensor FU24F

The FU24F is a digital SMART pH/ORP sensor made with a chemical resistant PPS 40GF body for harsh pH applications.

Liquid Analyzers

Liquid analyzers are used for monitoring process chemistry including water quality, providing process optimization and control.

pH and ORP Sensors

pH electrodes and sensors are the sensing portions of a pH measurement. Various installation options including retractable, flow thru, immersion, and direct insertion. Proper pH electrode/sensor selection is critical for optimal measurement results.

Process Analyzers

Process analyzers are used to determine the chemical composition or physical properties of substances involved in industrial processes.

SENCOM™ SMART Digital Sensors

Digital or SMART sensors maintain specific measurement and calibration data on an integrated chip along that is an integral part of the sensor. This data can be exchanged between the sensor and either a process transmitter or a laboratory PC using a data management software, like the SPS24.