Standard industrial pH sensors and electrodes for water, wastewater, and general process duty up to 100 °C and 10 bar.
Digital Process pH Sensor Pro – RS485 Modbus
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The InstroDirect IDH-100P Digital Process pH Sensor Pro – RS485 Modbus — is the digital "Pro" variant with an integrated in-sensor transmitter and RS485 Modbus RTU output. Australian technical support, on-site calibration, open RS485 Modbus compatibility. Alternative to Endress+Hauser and HACH pH sensors.
The InstroDirect IDH-100P Digital Process pH Sensor Pro – RS485 Modbus — is the digital "Pro" variant with an integrated in-sensor transmitter and RS485 Modbus RTU output. Australian technical support, on-site calibration, open RS485 Modbus compatibility. Alternative to Endress+Hauser and HACH pH sensors.
Industrial Standard pH Electrode – 130°C, 10 bar
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The InstroDirect IDH-J201 Industrial Standard pH Electrode – 130°C, 10 bar — is a robust general-purpose industrial pH electrode rated for continuous 130 °C operation and 10 bar pressure. Australian technical support, on-site calibration, open RS485 Modbus compatibility. Alternative to Endress+Hauser and HACH pH sensors.
The InstroDirect IDH-J201 Industrial Standard pH Electrode – 130°C, 10 bar — is a robust general-purpose industrial pH electrode rated for continuous 130 °C operation and 10 bar pressure. Australian technical support, on-site calibration, open RS485 Modbus compatibility. Alternative to Endress+Hauser and HACH pH sensors.
Industrial Process pH Sensor – 100°C, 316 SS Trim
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The InstroDirect IDH-300T Industrial Process pH Sensor – 100°C, 316 SS Trim — is a heavy-duty industrial pH sensor rated for continuous operation at 100 °C and 10 bar, designed for demanding process applications such as cooling towers, boiler water, acid/caustic dosing, and petrochemical process water. Australian technical support, on-site calibration, open RS485 Modbus compatibility. Alternative to Endress+Hauser and HACH pH sensors.
The InstroDirect IDH-300T Industrial Process pH Sensor – 100°C, 316 SS Trim — is a heavy-duty industrial pH sensor rated for continuous operation at 100 °C and 10 bar, designed for demanding process applications such as cooling towers, boiler water, acid/caustic dosing, and petrochemical process water. Australian technical support, on-site calibration, open RS485 Modbus compatibility. Alternative to Endress+Hauser and HACH pH sensors.
Mid-Range Industrial pH Sensor – 12mm Extended Body
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The InstroDirect IDH-200T Mid-Range Industrial pH Sensor – 12mm Extended Body — is an extended-body industrial pH electrode with 316 stainless trim, designed for deeper-insertion installations in process tanks and WWTP return lines where a short compact probe would sit too close to the pipe wall. Australian technical support, on-site calibration, open RS485 Modbus compatibility. Alternative to Endress+Hauser and HACH pH sensors.
The InstroDirect IDH-200T Mid-Range Industrial pH Sensor – 12mm Extended Body — is an extended-body industrial pH electrode with 316 stainless trim, designed for deeper-insertion installations in process tanks and WWTP return lines where a short compact probe would sit too close to the pipe wall. Australian technical support, on-site calibration, open RS485 Modbus compatibility. Alternative to Endress+Hauser and HACH pH sensors.
Compact Process pH Sensor – 12mm Body
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The InstroDirect IDH-100T Compact Process pH Sensor – 12mm Body — is a compact 12mm-body industrial pH electrode designed for general process water, cooling tower, and wastewater monitoring. Australian technical support, on-site calibration, open RS485 Modbus compatibility. Alternative to Endress+Hauser and HACH pH sensors.
The InstroDirect IDH-100T Compact Process pH Sensor – 12mm Body — is a compact 12mm-body industrial pH electrode designed for general process water, cooling tower, and wastewater monitoring. Australian technical support, on-site calibration, open RS485 Modbus compatibility. Alternative to Endress+Hauser and HACH pH sensors.