Emerson Rosemount 389 Reference Manual
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Emerson Rosemount 389 Reference Manual

General purpose ph/orp sensors
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Reference Manual
00809-0100-3389, Rev AA
February 2019
™
Rosemount
389/389VP
General Purpose pH/ORP Sensors

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Summary of Contents for Emerson Rosemount 389

  • Page 1 Reference Manual 00809-0100-3389, Rev AA February 2019 ™ Rosemount 389/389VP General Purpose pH/ORP Sensors...
  • Page 2 The following instructions must be adhered to and integrated into your safety program when installing, using, and maintaining Emerson products. Failure to follow the proper instructions may cause any one of the following situations to occur: loss of life, personal injury, property damage, damage to this instrument, and warranty invalidation.

  • Page 3: Table Of Contents

    Reference Manual Contents 00809-0100-3389 February 2019 Contents Chapter 1 Description and Specifications..................5 1.1 Features and applications......................... 5 1.2 Specifications........................... 6 1.3 Certifications............................ 7 1.4 Ordering information........................8 Chapter 2 Install...........................11 2.1 Unpacking and inspection......................11 2.2 Mounting............................11 2.3 Electrical installation........................15 Chapter 3 Calibration........................
  • Page 4 Contents Reference Manual February 2019 00809-0100-3389 Rosemount 389/389VP...

  • Page 5: Description And Specifications

    VP8 cable assemblies work with both VP8 and VP6 sensor connectors. The Rosemount 389/389VP has a molded Tefzel body with Viton O-rings, making each sensor very robust and chemically resistant. Complete encapsulation eliminates leakage or high humidity problems traditionally found in other pH/ORP designs.

  • Page 6: Specifications

    High pH glass (-11) 0 to 2 pH 2 to 12 pH 12 to 13 pH 13 to 14 pH Table 1-2: Rosemount 389/389VP pH/ORP sensor specifications Measurement range 0 to 14 -1500 to +1500 mV Temperature range 32 to 185 °F (0 to 85 °C) Automatic temperature compensation : 32 to 185 °F (0 to 85 °C)

  • Page 7: Certifications

    Reference Manual Description and Specifications 00809-0100-3389 February 2019 Figure 1-1: Pressure/temperature operating range for Rosemount 389/389VP Certifications IECEx Sensors without preamp (pH and ORP): Ex ia IIC T4 Ga (-20 ºC ≤ Ta ≤ +60 ºC) Sensors with SMART preamp (pH only): Ex ia IIC T4 Ga (-20 ºC ≤ Ta ≤ +60 ºC) Sensors with standard preamp (ORP only): Ex ia IIC T4 Ga (-20 ºC ≤...

  • Page 8: Ordering Information

    CAN/CSA E60079:11:02, UL 50, UL 508, UL 913, UL 60079-0:2005, UL 60079-11: 2002 Ordering information The Rosemount 389 and 389VP General Purpose pH/ORP Sensors are housed in a molded Tefzel body with 1 in. MNPT forward and rear facing threads suitable for insertion, submersion, or flow through installation.
  • Page 9 Reference Manual Description and Specifications 00809-0100-3389 February 2019 Table 1-3: Rosemount 389 pH/ORP Sensor ordering information (continued) Transmitter/TC compatibility 1181, 1050, 1060 (code -01 or -02) 1054A/B, 81, 2081, (code -01 or -02); for 54, 56, 1055, 1056, 1057, 1066, 5081, 6081, and XMT (code...
  • Page 10 Description and Specifications Reference Manual February 2019 00809-0100-3389 Rosemount 389/389VP...

  • Page 11: Chapter 2 Install

    Temperature and pressure limitations must not be exceeded at any time. A label regarding this matter is attached to the sensor with the cable and should not be removed. Figure 2-1: Rosemount 389 Sensor Dimensional Drawing A. pH/ORP electrode B. TC C.
  • Page 12 4. With the standard recessed electrode, air bubbles may become trapped in the sensor end. This problem is most commonly encountered in areas of low flow or during calibration. Shake the probe while it is immersed in solution to remove bubbles. Rosemount 389/389VP...
  • Page 13 2.2.1 Submersion mounting Rosemount 389 and 389VP Sensors have a 1-in. MNPT process connection at the back of the sensor. Procedure 1. To prevent rain water or condensation from running into the sensor, use a...
  • Page 14 Do not run the sensor's cable with power or control wiring. 2.2.2 Flow through and insertion mounting Rosemount 389 and 389VP sensors also have a 1-in. MNPT process at the front of the sensor for mounting into a 1¼-in. tee or the process. See Figure 2-4 for installation configurations.

  • Page 15: Electrical Installation

    Electrical installation Figure 2-5 through Figure 2-19 provide the guidelines for wiring Rosemount 389/389VP sensors to various Rosemount transmitters. 1. If the cable needs to be extended, use a high quality four-conductor shielded instrument cable available from Rosemount. Note If the cable is too long, loop up the excess cable.
  • Page 16 Install Reference Manual February 2019 00809-0100-3389 Figure 2-5: Rosemount 389 with Insertion Mounting Adapter P/N 23242-02 A. Cable B. ¾-in. FNPT C. Peek adapter; 1-in. PNPT x ¾-in. FNPT (reversible) D. 2-135 Viton "O" ring Note "O" ring must be inplace prior to use (PN 9550175) E.
  • Page 17 Reference Manual Install 00809-0100-3389 February 2019 Figure 2-7: VP8 Cable, Instrument End A. Earth ground B. ID Note For additional wiring information on this product, including sensor combinations not shown here, refer to the Liquid Transmitter Wiring Diagrams. C. Solution ground Note For additional wiring information on this product, including sensor combinations not shown here, refer to the...
  • Page 18 Install Reference Manual February 2019 00809-0100-3389 Figure 2-8: Rosemount 389-01-xx-55 Wiring to Rosemount 1056, 1057, and 56 Transmitters Rosemount 389/389VP...
  • Page 19 Reference Manual Install 00809-0100-3389 February 2019 Figure 2-9: Rosemount 389-01-xx-55 Wiring to Rosemount 1066 Transmitter Figure 2-10: Rosemount 389-01-xx-55 Wiring to Rosemount 5091 Transmitter Reference Manual...
  • Page 20 Install Reference Manual February 2019 00809-0100-3389 Figure 2-11: Rosemount 389VP Wiring to Rosemount 1056, 1057, and 56 Transmitters Rosemount 389/389VP...
  • Page 21 Reference Manual Install 00809-0100-3389 February 2019 Figure 2-12: Rosemount 389VP Wiring to Rosemount 1066 Transmitter Figure 2-13: Rosemount 389VP Wiring to Rosemount 5081 Transmitter Reference Manual...
  • Page 22 Install Reference Manual February 2019 00809-0100-3389 Figure 2-14: Rosemount 389VP-xx-55-70 Wiring to Rosemount 1056, 1057, and 56 Transmitters Figure 2-15: Rosemount 389VP-xx-55-70 Wiring to Rosemount 1066 Transmitter Rosemount 389/389VP...
  • Page 23 Reference Manual Install 00809-0100-3389 February 2019 Figure 2-16: Rosemount 389VP-xx-55-70 Wiring to Rosemount 5081 Transmitter Reference Manual...
  • Page 24 Install Reference Manual February 2019 00809-0100-3389 Figure 2-17: Rosemount 389-02-xx-54-62 Wiring to Rosemount 1056, 56, and 1057 Transmitters Rosemount 389/389VP...
  • Page 25 Reference Manual Install 00809-0100-3389 February 2019 Figure 2-18: Rosemount 389-02-xx-54-62 Wiring to Rosemount 1066 Transmitter Figure 2-19: Rosemount 389-02-xx-54-62 Wiring to Rosemount 5081 Transmitter Reference Manual...
  • Page 26 Install Reference Manual February 2019 00809-0100-3389 Rosemount 389/389VP...

  • Page 27: Chapter 3 Calibration

    Reference Manual Calibration 00809-0100-3389 February 2019 Calibration Sensor preparation Procedure 1. Shake down the sensor to remove any air bubbles that may be present at the tip of the pH glass bulb. 2. In most cases, the pH sensor can simply be installed as shipped, and readings may be obtained with an accuracy of ±0.2 pH.

  • Page 28: Rosemount ™ 389/389Vp Orp Calibration

    Quinhydrone is only slightly soluble, but only a few crystals are required. 3. Immerse the sensor in the standard solution. Allow one to two minutes for the ORP sensor to stabilize. 4. Adjust the standardized control of the transmitter to the solution value shown in Table 3-1. Rosemount 389/389VP...
  • Page 29 Reference Manual Calibration 00809-0100-3389 February 2019 The resulting potentials, measured with a clean platinum electrode and saturated KCl/AgCL reference electrode, should be within ±20 millivolts of the value shown in Table 3-1. Note solution temperature to ensure accurate interpretation of results. The ORP value of saturated quinhydrone solution is not stable over long periods of time.
  • Page 30 Calibration Reference Manual February 2019 00809-0100-3389 Rosemount 389/389VP...

  • Page 31: Chapter 4 Maintenance

    Reference Manual Maintenance 00809-0100-3389 February 2019 Maintenance ™ Rosemount 389/389VP sensors require minimum maintenance. Keep the sensors clean and free of debris and sediment at all times. The frequency of cleaning by wiping or brushing with a soft cloth or brush is determined by the nature of the solution being measured.

  • Page 32: Automatic Temperature Compensator

    Table 4-2: Temperature vs. Resistance of Auto T.C. Elements Temperature °C Resistance (Ohms) ±1% PT-100 26270 100.0 2802 103.8 2934 107.7 3000 109.6 3066 111.5 3198 115.4 3330 119.2 3462 123.1 3594 126.9 3726 130.8 3858 134.6 3990 138.5 Rosemount 389/389VP...

  • Page 33: Orp

    Reference Manual Maintenance 00809-0100-3389 February 2019 4.3.1 Check platinum electrode Check the platinum electrode as follows. There are two types of standard solutions which may be used to check the ORP electrode/transmitter system. Type 1: One type of commonly used ORP standard solution is the saturated quinhydrone ™...
  • Page 34 Maintenance Reference Manual February 2019 00809-0100-3389 Rosemount 389/389VP...

  • Page 35: Chapter 5 Troubleshooting

    Reference Manual Troubleshooting 00809-0100-3389 February 2019 Troubleshooting Table 5-1: Troubleshooting Trouble Probable Cause Remedy Meter reads off scale (Display reads Defective preamplifier. Replace preamplifier (for code 02 overrange). sensors). For code 01, replace sensor. T.C. element shorted Check T.C. element as instructed in Automatic temperature compensator and replace sensor if defective.
  • Page 36 Troubleshooting Reference Manual February 2019 00809-0100-3389 Table 5-2: Rosemount 389/389VP pH/ORP Sensor Accessories Information Part number Description 11275-01 Handrail mounting assembly 12707-00 Jet spray cleaner 2002011 CPVC in-line tee, 1.5 in. size, 1.0 in. threaded process connection ends 915240-03 PVC in-line tee, 2.0 in. size, 3/4 in. threaded process connection ends 915240-04 PVC in-line tee, 2.0 in.

  • Page 37: Return Of Material

    Reference Manual Return of Material 00809-0100-3389 February 2019 Return of Material For all repair or return of material requests, please contact the factory. Reference Manual...
  • Page 38 Return of Material Reference Manual February 2019 00809-0100-3389 Rosemount 389/389VP...

  • Page 39: Appendix Aec Declaration Of Conformity

    Reference Manual EC Declaration of Conformity 00809-0100-3389 February 2019 EC Declaration of Conformity Reference Manual...
  • Page 40 EC Declaration of Conformity Reference Manual February 2019 00809-0100-3389 Rosemount 389/389VP...
  • Page 41 Reference Manual EC Declaration of Conformity 00809-0100-3389 February 2019 Reference Manual...
  • Page 42 EC Declaration of Conformity Reference Manual February 2019 00809-0100-3389 Rosemount 389/389VP...

  • Page 43: Appendix B China Rohs Table

    Reference Manual China RoHS Table 00809-0100-3389 February 2019 China RoHS Table Reference Manual...
  • Page 44 China RoHS Table Reference Manual February 2019 00809-0100-3389 Rosemount 389/389VP...

  • Page 45: Appendix C Intrinsically Safe Sensor Installation Drawing - Fm

    Reference Manual Intrinsically Safe Sensor Installation Drawing - FM 00809-0100-3389 February 2019 Intrinsically Safe Sensor Installation Drawing - FM Reference Manual...
  • Page 46 2019 Emerson. All rights reserved. Facebook.com/Rosemount The Emerson logo is a trademark and service mark of Emerson Electric Co. Rosemount is a youtube.com/RosemountMeasurement mark of one of the Emerson family of companies. All other marks are the property of their google.com/+RosemountMeasurement respective owners.

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