Rosemount Analytical Model 389 pH/ORP Sensor
Starting at $555.00

Some models in stock. View available part numbers.

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Features

  • Wetted Materials: Tefzel, Viton, glass, ceramic
  • pH Glass Types: Hemi bulb and High pH glass
  • Insertion Depth: 2.8 in. to 5.5 in. (6.1 cm to 14 cm)
  • Sensor Design: Threaded connection for in-line or submersion mounting
  • Electrical Connection: Integral cable or VP connector
  • Temperature Compensation: 3K or Pt 100
  • Process Connection: 1 inch MNPT threads in two places
  • Triple junction reference

The Rosemount Analytical models 389 and 389VP are insertion style pH/ORP sensors with integral preamp. These sensors are compatible with nearly all Rosemount Analytical pH/ORP analyzers. Both models are combination sensors (pH, reference, and temperature within sensor body) and measure pH or ORP (Oxidation/Reduction Potential) of aqueous solutions in pipelines, open tanks, or ponds. Models 389 and 389VP are suitable for virtually all applications and are compatible with Rosemount Analytical and other manufacturers' instruments.

The Rosemount Analytical models 389 and 389VP are housed in a molded Tefzel body with Viton o-rings, making each sensor virtually indestructible and chemically resistant. The simplified construction, designed with user convenience in mind does not require electrolyte replenishment or any high maintenance troubleshooting procedures. The 389 features an integral cable design while the 389VP is offered with a watertight Variopol VP multiple pin sensor-to-cable connector which eliminates re-wiring and cable twisting when replacing sensors. Installation is easily achieved through the wide variety of mounting configurations. Both Models feature 1 inch (MNPT) front and rear facing connections for insertion, submersion, or flow-through pH and ORP applications.

Both the 389 and 389VP are provided with a triple junction reference which protects the reference element from harsh elements and helps prolong the sensor life. Both the 389 and 389VP require a preamplifier to convert the high impedance pH signal into a stable, noise-free signal. The 389 offers the choice of an integral sensor preamplifier. Both models can use a remote preamplifier, integral to the analyzer/ transmitter or in a remote junction box. All preamplifiers have a transmission capability of up to three miles.

Cables

Rosemount Analytical Connector Cable
Lengths of cable with VP8 sensor connectors
$153.00
In Stock
Rosemount Analytical 23646-01 Extension Cable
11-cond shielded extension cable
$105.00

Accessories

Please consider these optional accessories.

Rosemount Analytical Electronic Calibration
Certificate for specific unit, includes model, serial and/or tag numbers, test standards, NIST report numbers, & the actual test data
$172.00
Rosemount Analytical Certificate of Origin
Original certificate of origin with chamber of commerce stamp
$286.00

Applications

This product can be used in the following applications:

Part Number Price Available
389VP-10-54
Show Configuration
Base Price
$555.00
Style
Sensor with VP8 connector for use with remote preamplifier (+$38.00)
Electrode
Low impedance general purpose pH electrode
Analyzer Model Compatibility
1054, 1055, 1056, 1057, 6081, 2054, 2081, 2700, 54, 81, 3081, 4081,5081,XMT
Preamplifier
Purchase separately
Reconfigure
$593.00 3

Interested in Other Part Numbers?

Other part numbers are available to order but are not currently in stock. Current availability for non-stock parts is "Usually ships in 4-6 weeks". Click here to select options