Pyxis ST-712SS Inline Stainless Steel pH + ORP Analyser (Replaceable Electrode)
Stainless steel inline pH + ORP analyser with replaceable electrode head (0-14 / +1,500mV). Dual 4-20mA + RS-485, 8-pin.
Pyxis ST-712SS Inline Stainless Steel pH + ORP Analyser (Replaceable Electrode)
The Pyxis ST-712SS is a combined inline pH and ORP analyser that monitors process and treatment water across a 0-14 pH range and up to +1,500mV ORP from a single unit. Its stainless steel body houses a replaceable electrode head, so the sensing element can be renewed without replacing the whole analyser. Dual 4-20mA analog outputs plus RS-485 Modbus via an 8-pin connector allow direct integration into existing control systems.
Description
The Pyxis ST-712SS combines pH and ORP measurement in a single inline analyser, monitoring process and treatment water across a 0-14 pH range and up to +1,500mV ORP from one sensing point. For plants that need both parameters, this reduces the number of separate instruments and installation points required.
Like the rest of the ST-7xx series, it uses a stainless steel body with a replaceable electrode head, so the sensing element can be renewed without replacing the entire analyser — helping control long-term maintenance costs.
It outputs dual 4-20mA analog signals (one per parameter) plus RS-485 Modbus via an 8-pin connector, enabling direct integration into existing PLC or SCADA control systems.
Why Use This
Combined Parameter Monitoring
Measures both pH (0-14) and ORP (+1,500mV) from one inline unit, simplifying installation compared to running two separate analysers.
Lower Maintenance Cost
The replaceable electrode head allows the sensing element to be renewed without replacing the full analyser.
Flexible System Integration
Dual 4-20mA outputs plus RS-485 Modbus support integration into control and monitoring systems.
Applications
- Combined pH/ORP process control — single-point monitoring where both parameters drive dosing decisions
- Water treatment plants with limited installation space — consolidating two measurements into one sensor
- Disinfection and pH adjustment monitoring — tracking oxidizing conditions alongside pH in treated water
FAQ
Does the ST-712SS measure pH and ORP at the same time?
Yes, it is a combined analyser that measures 0-14 pH and up to +1,500mV ORP from a single inline unit.
How many outputs does it have?
It provides dual 4-20mA analog outputs, one for each parameter, plus RS-485 Modbus, all via an 8-pin connector.
Can the electrode be serviced without replacing the whole unit?
Yes, it uses a replaceable electrode head housed in a stainless steel body, so only the sensing element needs replacing over time.
Why choose a combined pH/ORP unit instead of two separate analysers?
It reduces installation points by monitoring both parameters from a single inline analyser rather than requiring two separate sensors.
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