EMERSON
Measurement Instrumentation
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Rosemount™ 3900 General Purpose pH/ORP Sensor

Sensor has a double junction for resistance to harsh environments, protecting against ions like ammonia and chlorine. Its porous Teflon® junction ensures reliability in various aqueous solutions.

The Rosemount 3900 pH Sensor / ORP Sensor features a double junction reference that aids in the sensors' resistance to harsh environments and helps prolong sensor life. The double junction protects the reference element from poisoning ions-such as ammonia, chlorine, cyanides, and sulfides. Both sensors are made with a porous Teflon® junction. The robust pH/ORP sensor design provides reliability in a wide range of aqueous solutions found in pipelines, open tanks or ponds.

Key Features

  • Extended pH sensor / ORP 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 -10°C (14°F)
  • Built-in solution ground for advanced diagnostics
  • pH/ORP sensor body features a one-piece construction with both front facing and rear facing process threads
  • ¾” and 1” MNPT process connections to meet a variety of application installation requirements
  • SMART enabled for pH measurements