Overview
The Rosemount 3900VP-02-10 is a precision pH/ORP combination sensor designed for continuous monitoring of aqueous solutions in pipelines, open tanks, and process vessels. This Variopol-equipped model features a PT100 RTD for automatic temperature compensation and is supplied without an integral pre-amplifier, making it ideal for applications where the analyzer/transmitter is located more than 15 feet from the sensor.
Key Features
- Variopol (VP8) Connector: Allows quick sensor removal and replacement without breaking cable connections at the analyzer
- PT100 RTD Temperature Compensation: Automatic compensation across -10 to 100°C (14 to 212°F) operating range
- Ryton® Plastic Body: Chemically resistant polyphenylene sulfide construction for durability in harsh environments
- Built-in Solution Ground: Advanced diagnostics and electrochemical stability
- Double Junction Reference: Extended sensor life and protection against poisoning ions
- No Pre-amp: Configure with separate junction box pre-amp kits or use with integrated transmitter pre-amplifiers
Technical Specifications
- Model: Rosemount 3900VP-02-10
- Sensor Type: pH/ORP combination with PT100 RTD
- Connector Type: Variopol (VP8) – cable sold separately
- Temperature Range: -10 to 100°C (14 to 212°F)
- Pressure Rating: 90 psig @ 158°F (621 kPa @ 70°C)
- Body Material: Ryton® (polyphenylene sulfide plastic)
- Preamplifier: None (model designation “-02”)
- Weight: Approximately 1.26 kg
- Certifications: UL 50, UL 508, UL 913, CAN/CSA ratings
- Application Range: pH 0–14, minimum conductivity 0.1 µS/cm
Typical Applications
The Rosemount 3900VP-02-10 is suitable for:
- Water and wastewater treatment process monitoring
- Cooling tower and closed-loop system analysis
- Power generation and steam condensate pH control
- Food and beverage processing pH measurement
- Chemical manufacturing and neutralization tank monitoring
- Pulp and paper mill process optimization
- Pharmaceutical manufacturing quality control
Compatibility & Replacements
Compatible With
- Rosemount XMT, 3081, 5081, 6081 analyzers/transmitters (with compatible pre-amp option)
- Rosemount 54e, 1055, 1056 transmitter/controllers
- Rosemount 56, 1056, 1066, 1057 transmitters (with SMART pre-amp configuration)
- Custom junction box pre-amplifier kits (ordered separately for remote installations)
- Process connection tees and insertion assemblies (PN 2002011 and 915240 series)
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. The 3900VP-02-10 configuration is specific to Variopol connector and no-pre-amp architecture. Related Rosemount models include 3900-02-10 (integral cable) and 3900VP-01-10 (with SMART pre-amp), which may suit different installations.
Works With
- Variopol (VP8) cable connections — cables sold separately by Rosemount
- Rosemount low-flow cell panels (PN 24091-00/24091-02) for demineralized water applications
- Horizontal pipe tees (PN 2002011) and 2-inch flow-through tees (PN 915240-XX)
- S10283-LQD adapter for legacy installation conversions
- Industry-standard 3/4-inch and 1-inch NPT process threads
