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Rosemount pH/ORP Sensor - Model 389

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Product Description

QUICK CABLE-TO-SENSOR RELEASE, provided by the watertight VP8 multiple-pin connector, eliminates cable twisting.
LONGER SENSOR LIFE provided by triple junction reference cell in process solutions containing poisoning ions.
PROCESS MOUNTING VERSITILITY provided by one-piece construction with process threads in two places.
SUPERIOR CHEMICAL RESISTANCE provided by rugged Tefzel®1 body, completely sealed to eliminate sensor leakage.
ENHANCED PERFORMANCE AND INCREASED LIFE with minimized glass cracking provided by field-proven ACCUGLASS™2 pH glass formulations.


Wetted Materials: Tefzel®1, Viton®1, 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: sion mounting
Electrical Connection: Integral cable or VP connector
Temperature Compensation: 3K or Pt 100
Process Connection: 1 inch MNPT threads in two places


Materials of Construction: Tefzel, glass, ceramic and Viton
Process Connections:
1 in. MNPT, 2 places
Integral Cable:Model 389:
15 ft (4.6 m) or 25 ft (7.8 m) (with integral sensor preamplifier only)
Measured Range: pH:
ACCUGLASS 0-14* ORP: -1500 to +1500 mV
Maximum Pressure:
790 kPa [abs] (100 psig) at 65°C (150°F) 
Temperature Compensation:
Automatic 0° to 85°C (32° to 185°F), Temperature compensation is not equired for 389 ORP when used with Models 1060, 1023 or 1181 ORP

Additional Information

Additional Information

Specifications N/A
Application N/A
Duty Cycle N/A


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