YOKOGAWA PR4A-S-10 RETRACTABLE CONDUCTIVITY SENSOR

Description:

The Yokogawa PR4A-S-10 Retractable Conductivity Sensor is used an industrial in-line measurement assembly designed for continuous conductivity monitoring in process systems. It features a retractable holder that allows safe insertion and removal of the conductivity sensor under pressure without shutting down the process. Constructed from stainless steel (AISI 316), it is built for harsh environments and integrates with Yokogawa SC4A conductivity sensors for accurate and stable measurements.

Applications:

The Yokogawa PR4A-S-10 is used in industrial environments for continuous online monitoring of conductivity in liquid processes. It is commonly deployed in water and wastewater treatment, chemical processing, power generation, and process industries. The retractable design allows maintenance, calibration, and sensor replacement without interrupting the process, ensuring system uptime and reliable measurement.

Technical Specifications:

• Manufacturer: Yokogawa
• Model / Part Number: PR4A-S-10
• Product Type: Retractable Conductivity Sensor Assembly
• Function: In-line conductivity measurement with retractable maintenance capability
• Material: Stainless steel AISI 316 (wetted parts)
• Sensor Compatibility: Yokogawa SC4A conductivity sensors
• Insertion Length: 1.0 meter (“-10” suffix)
• Pressure Rating:
• Static: up to ~1 MPa
• Operation during maintenance: up to ~500 kPa
• Temperature Range: up to ~100–110°C (operation dependent)
• Connection Options: Threaded, flanged, or ball valve mounting
• Features:
• Through-the-valve retractable design
• Adjustable insertion depth
• Safety locking mechanism
• O-ring sealing system
• Installation: Pipeline or vessel mounting
• Function Role: Continuous conductivity measurement with hot-tap maintenance capability

Common Replacements:

• Yokogawa PR4A-T-10 (titanium version)
• Yokogawa PR10 Retractable Assembly
• Fixed insertion conductivity sensor assemblies (non-retractable)