Rosemount 3900/3900VP General Purpose pH/ORP Sensors – 3202

Rosemount™
3900/3900VP
General Purpose pH/ORP Sensors

High performance for your process pH/ORP needs
The Rosemount 3900 and 3900VP pH/ORP combination sensors are used for reliable pH or oxidation/
reduction potential measurements of aqueous solutions in pipelines, open tanks, or ponds. Its robust
sensor design allows the Rosemount 3900 and 3900VP sensors to be used in a wide range of applications

Overview

A robust sensor design
■ Extended sensor life and protection against poisoning ions
using a double junction reference.
■ Enhanced performance and increased life with cracking
resistant glass.
■ Maximum chemical resistance provided by a rugged
polyphenylene sulfide body.
■ Operates in sub-zero temperatures down to 14 °F (-10 °C).
■ Built-ins solution ground for advanced diagnostics.
Versatile installation options
■ The sensor body features a one-piece construction with both front facing and rear facing process threads.
■ ¾-in. and 1-in. MNPT process connections to meet a variety of application installation requirements.
■ Variopol (VP8) cable connection option, for quick cable-to-sensor release, eliminates cable twisting.
SMART preamplifier
■ Automatic recognition of pH sensors by Rosemount transmitters: 1066, 1057, 1056, and 56.
■ pH calibration data is stored, which allows sensors to be calibrated in advance for “plug and play” installations in the field.