ST-710SS Series Inline pH & ORP Sensors with Replaceable Head

Simplistic, Industrialized, Stainless Steel pH and ORP Sensors.

Simple to use inline sensors that measures for pH (0–14) and ORP (±1,500mV). Built robustly for Industrial Water Treatment applications!

CE Mark 

Price range: $1,210.00 through $1,462.00

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The ST-710SS series of pH and pH/ORP composite sensors are specifically designed to simplify installation, calibration and in-use operation in process water, industrial water, wastewater and cooling water applications. These sensors are uniquely designed to offer an embedded transmitter and can be utilized in both 4-20mA or RS-485 Modbus formats. When utilized in RS-485 Modbus format, these sensors also provide a temperature output signal. These features dramatically improve application possibilities allowing the ST-710SS series of sensors to be directly connected to any micro-processor- based controller, PLC and Distributed Control System. The ST-710SS series oversized platinum disk for ORP and the flat pH bubble sensing elements increase their resistance to highly turbid waters and contamination. The enlarged salt bridge design with large junction capacity also ensures a significantly longer sensor life with minimal maintenance.

These devices are ideally suited for hard to measure waters where conventional pH & ORP sensors would have otherwise failed or required high maintenance costs. The ST-710SS series of sensors are produced with a 304 Stainless Steel Body and are designed with a removable and replaceable electrode head assembly. Each sensor offers a unique design Electrode Head Assembly incorporating the complete sensor electrode and appropriate electrolyte solution in an easily replaceable format. Each sensor offers a six-foot cable with 8-Pin quick adapter as well as a 1.5-foot flying lead wire with 8-pin adapter for rapid installation and replacement. The ST-710SS series are provided with the ST-001 Pyxis standard ¾” NPT- CPVC installation Tee for in-line flow applications but may also be installed in submersed applications using the MA-102S Submersion Adapter Kit. Additionally, larger pipe size installation Tee’s are available from Pyxis Lab.

Features

  • Easy and replaceable electrode head with simple replacement
  • Accurate and stable measurement with ultra-low drift
  • Built-in transmitter without preamplifier or meter head
  • Dual Outputs both 4-20mA isolated signalsor RS-485 Modbus
  • Long-distance transmission with higher stability & accuracy
  • Wireless Calibration, Diagnostics, Data Trend via uPyxis APP when used with MA-CR Adapter
  • Tolerant to frozen conditions during shipment or storage for short periods
  • Large junction capacity 3-4X Electrolyte Solution Content
  • Enlarge Platinum Disk
  • Longer service life

High Performance Sensor for Data Center Cooling 

The ST- 710SS is ideal for data center applications, enhanced coolant, and water quality monitoring. Able to handle critical systems like condenser and technology cooling. Designed for seamless integration, the 24V DC-powered sensors feature low power demand (<1.5W), with built-in transmitters.  Easy or direct communication with DCS or PLC systems and durable 304 stainless steel construction. Enabling operation under high pressures up to 290 psi. These features streamline installation, maintenance, and ensure reliable performance in demanding data center environments.

Specifications

Items ST-710SS ST-711SS ST-712SS
P/N 53030 53031 53032
ORP Range NA ± 1500 mV ± 1500 mV
Precision NA ± 1 mV or 1% of the value ± 1 mV or 1% of the value
pH Range 0.00 – 14.00
w/ATC
NA 0.00 – 14.00
w/ATC
Precision ± 0.01 pH unit or 1% of the value NA ± 0.01 pH unit or 1% of the value
Response Time 95% within 5 seconds
Power Supply 22 – 26V DC, Power Consumption 2W
Storage Temperature -7 °C – 60 °C (20 – 140 °F)
Outputs Isolated 4 – 20 mA Analog Outputs & Isolated RS-485 Digital Output
Dimension (L x D) Length 6.8 inch (172.7 mm), body diameter 1.44 Inch (36.6 mm)
Installation ST-001 Inline Tee (provided) ¾” FNPT Glue & Thread
Body Material 304 stainless steel
Weight 530 g (1.16 lbs)
Operational Pressure 100 psi (6.9 Bar)
Operating Temperature 4 °C – 49 °C (40 – 120 °F)
Wet Material Quartz & UPVC
Rating IP67, Fully Dustproof & Waterproof
Regulation CE Marked
Cable Length MA-4.9CR Cable (8Pin Male/Female Adapters – 4.9ft)
MA-1.5CR Cable (8 Pin Male Adapter/Flying Leads – 4.9ft)
Additional Extension Cables Available
Typical Electrode Service Life 2 years
Electrode Warranty 6 Months
Sensor Body Warranty 13 Months

Support Documents

Fluid Dynamics AI Critical Cooling Data Sheet

ST-710SS User Manual

ST-711SS User Manual

ST-712SS User Manual

ST-710SS Series Inline pH-ORP Sensors Datasheet

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