Emerson Rosemount 389 Instruction Manual
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Emerson Rosemount 389 Instruction Manual

General purpose ph/orp sensors
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Instruction Manual
LIQ-MAN-389, Rev G
July 2017
™
Rosemount
389/389VP
General Purpose pH/ORP Sensors

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Summary of Contents for Emerson Rosemount 389

  • Page 1 Instruction Manual LIQ-MAN-389, Rev G July 2017 ™ Rosemount 389/389VP General Purpose pH/ORP Sensors...
  • Page 2 Essential instructions Read this page before proceeding! Emerson designs, manufactures, and tests its Rosemount products to meet many national and international standards. Because these instruments are sophisticated technical products, you must properly install, use, and maintain them to ensure they continue to operate within their normal specifications.
  • Page 3 Changed PN 933022 to PN 9320057 on the drawing 400389VP12, page 5 and Table 5-2, page 17. 12/2008 Updated to add VP. 03/2012 Updated pages 23 and 26. 1/2013 Incorporated SMART Sensor technology. 4/2017 Updated wiring diagrams. Reformatted to reflect new Emerson branding guidelines.

  • Page 5: Table Of Contents

    Flow Through and Insertion Mounting ................11 Electrical Installation ........................11 Chapter 3 Calibration and maintenance ..................23 Sensor Preparation ........................23 Rosemount 389/389VP pH Calibration ..................23 3.2.1 Recommended Two Point Buffer Calibration Procedure ..........23 3.2.2 Recommended pH Sensor Standardization ..............24 Rosemount 389/389VP ORP Calibration ..................24...
  • Page 6 Contents 389/389VP...

  • Page 7: 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 8: Specifications

    Rosemount 389/389VP sensors are combintation 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. rosemount 389/389VP sensors are suitable for virtually all applications and are compatible with Rosemount and other manufacturers' instruments.

  • Page 9: Certifications

    Weight/shipping weight 1 lb / 2 lb (0.45 kg / 0.9 kg) 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 ≤...

  • Page 10: 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 11 Description and specifications Table 1-3: Rosemount 389 pH/ORP Sensor ordering information Model Sensor type pH/ORP Sensor Preamplifier/cable Integral pramplifier, 25 ft cable No preamplifier, 15 ft cable Combination electrode pH -GPLR glass pH-high pH glass Transmitter/TC compatibility 1181, 1050, 1060 (code -01 or -02) 1054A/B, 81, 2081, (code -01 or -02);...
  • Page 12 Description and specifications Table 1-4: Rosemount 389VP pH/ORP Sensor ordering information Model Sensor type 389VP pH/ORP sensor Combination electrode pH - GPLR glass pH - high pH glass Transmitter/TC compatiblity 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 -02 only) 54, 56, 1055, 1056, 1057, 5081, 6081, and XMT (code -01 only) Preamplifier option...

  • Page 13: Chapter 2 Installation

    Temperature and pressure limitations must not be exceeded at any time. A Caution label regarding this matter is attached to the sensor with the cable. Please do not remove this label.. Figure 2-1: Rosemount 389 Sensor dimensional drawing Instruction Manual...
  • Page 14 Installation Figure 2-2: Rosemount 389VP Sensor dimensional drawing 389/389VP...

  • Page 15: Submersion Mounting

    2.2.1 Submersion mounting Rosemount 389 and 389VP sensors have a 1 in. MNPT process connection at the back of the sensor. Using a standard 1 in. union, mount the sensor to a 1 in. SCH 80 CPVC or PVDF standpipe.
  • Page 16 Installation Figure 2-3: Submersion installations Run the sensor cable through a protective conduit for isolation from electrical interference or physical abuse from the process. Install the sensor within 80 ° of vertical, with the electrode facing down. Do not run the sensor's cable with power or control wiring. 389/389VP...

  • Page 17: Flow Through And Insertion Mounting

    Installation 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 1-1/4 in. tee or the process. See Figure for installation configurations.
  • Page 18 Installation Figure 2-5: Model 389 with Insertion Mounting Adapter P/N 23242-02 Figure 2-6: VP 8 Cable, Rosemount 389VP Sensor End 389/389VP...
  • Page 19 Installation Figure 2-7: VP8 Cable, Instrument End NOTICE For additional wiring information on this product, including sensor combinations not shown here, please refer to the Liquid Transmitter Wiring Diagrams. Instruction Manual...
  • Page 20 Installation Figure 2-8: Rosemount 389-01-xx-55 Wiring to Rosemount 1056, 1057, and 56 Transmitters 389/389VP...
  • Page 21 Installation 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 Instruction Manual...
  • Page 22 Installation Figure 2-11: Rosemount 389VP Wiring to Rosemount 1056, 1057, and 56 Transmitters 389/389VP...
  • Page 23 Installation Figure 2-12: Rosemount 389VP Wiring to Rosemount 1066 Transmitter Figure 2-13: Rosemount 389VP Wiring to Rosemount 5081 Transmitter Instruction Manual...
  • Page 24 Installation 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 389/389VP...
  • Page 25 Installation Figure 2-16: Rosemount 389VP-xx-55-70 Wiring to Rosemount 5081 Transmitter Instruction Manual...
  • Page 26 Installation Figure 2-17: Rosemount 389-02-xx-54-62 Wiring to Rosemount 1056, 56, and 1057 Transmitters 389/389VP...
  • Page 27 Installation 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 Instruction Manual...
  • Page 28 Installation 389/389VP...

  • Page 29: Calibration And Maintenance

    ±0.2 pH. To obtain greater accuracy or to verify proper operation, calibrate the sensor as a loop with its compatible transmitter. Rosemount 389/389VP pH Calibration After a temporary connection is established between the sensor and the instrument, you may perform a buffer calibration.

  • Page 30: Recommended Ph Sensor Standardization

    Adjust the transmitter to the standardized value. Rosemount 389/389VP ORP Calibration Most industrial applications have a number of ORP reactions occuring in sequence or simultaneously. There can be several components that are oxidized or reduced by the reagents that are used.
  • Page 31 Calibration and maintenance Quinhydrone is only slightly soluble, but only a few crystals are required (refer to Section for an alternate ORP standard solution). Immerse the sensor in the standard solution. Allow 1-2 minutes for the ORP sensor to stabilize. Adjust the standardized control of the transmitter to the solution value shown in Table 3-1.
  • Page 32 Calibration and maintenance 389/389VP...

  • Page 33: Chapter 4 Maintenance

    Maintenance 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 34: Orp

    Maintenance The 3K element reads 3000 ohms ±1% at 77 °F (25 °C), and a Pt100 reads 110 ohms. Resistance varies with temperature for a 3K and Pt-100 element and can be determined according to Table or the following formula: [1 + R (T-20) Where R...

  • Page 35: Cleaning Platinum Electrode

    Maintenance WARNING! CORROSIVE SUBSTANCE The solution used during the following check is an acid and should be handled with care. Follow the manufacturer's directions. Wear the proper protective equipment. If contact with skin or clothing is made, immediately rinse with plenty of clean water. Type 2: A second ORP standard solution can be prepared from the following recipe: Procedure ●...
  • Page 36 Maintenance 389/389VP...

  • Page 37: Chapter 5 Troubleshooting

    Troubleshooting Troubleshooting Table 5-1: Troubleshooting Trouble Probable Cause Remedy Meter reads off scale (Display reads Defective preamplifier. Replace preamplifier (for code 02 sen- overrange). sors). For code 01, replace sensor. T.C. element shorted Check T.C. element as instructed in Section 4.2 and replace sensor if defec- tive.
  • Page 38 Troubleshooting 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 39: Return Of Material

    Return of Material Return of Material For all repair or return of material requests, please contact the factory. Instruction Manual...
  • Page 40 Return of Material 389/389VP...

  • Page 41: Ec Declaration Of Conformity

    EC Declaration of Conformity EC Declaration of Conformity Note: Please see website for most recent Declaration. Instruction Manual...
  • Page 42 EC Declaration of Conformity 389/389VP...

  • Page 43: Intrinsically Safe Sensor Installation Drawing - Fm

    Intrinsically Safe Sensor Installation Drawing - FM Intrinsically Safe Sensor Installation Drawing - FM Instruction Manual...
  • Page 44 Emerson Automation Solutions The Emerson logo is a trademark and service mark of Emerson 1 Pandan Crescent Electric Co. Rosemount is a mark of one of the Emerson family of Singapore 128461 companies. All other marks are the property of their respective Singapore owners.

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