Emerson Rosemount 385 Reference Manual
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Emerson Rosemount 385 Reference Manual

Ph/orp sensors
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Reference Manual
00809-0100-3385
Rev. AA
February 2019
™
Rosemount
385
pH/ORP Sensors

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Summary of Contents for Emerson Rosemount 385

  • Page 1 Reference Manual 00809-0100-3385 Rev. AA February 2019 ™ Rosemount pH/ORP Sensors...
  • Page 2 hasgkas...
  • Page 3 Essential Instructions Read this page before proceeding! Emerson designs, manufactures and tests its products to meet many national and international stan- dards. Because these sensors are sophisticated technical products, you MUST properly install, use, and maintain them to ensure they continue to operate within their normal specifications. The following instructions MUST be adhered to and integrated into your safety program when installing, using, and maintaining Rosemount products.

  • Page 5: Table Of Contents

    Mechanical Installation ..................5 Electrical Installation....................8 Section 3: Startup and Calibration Startup ......................11 Calibration Using Buffer Solutions or Grab Samples..........11 Rosemount 385 ORP Calibration ................11 Section 4: Maintenance Sensor Removal ....................13 Sensor Maintenance ..................13 Sensor Tube Replacement ..................16 Rosemount 385 ORP ..................18 Section 5: Troubleshooting Troubleshooting ....................19...
  • Page 6 Table of Contents Reference Manual February 2019 00809-0100-3385 Table of Contents...

  • Page 7: Section 1: Description And Specifications

    Titanium tube and Tefzel allowing the sensor to be used in especially harsh applications such as bleach lines in paper mills. The Rosemount 385 pH/ORP Sensor is designed for use with a standard 1-1/2 in. ball valve. This makes it ideal for replacing or updating any manufacturer's existing retractable pH/ORP sensor without process shut-down.

  • Page 8: Performance And Specifications

    Description and Specifications Reference Manual February 2019 00809-0100-3385 Performance and Specifications Table 1-1: Rosemount 385 sensor specifications pH Range GPLR 0-13pH, High pH 0-14 pH Maximum Pressure at Retraction and Insertion 64 psig (542 kPa abs) Maximum Process Pressure and Temperature 100 psig (790 kPa abs) at 100 °C...

  • Page 9: Ordering Information

    Reference Manual Description and Specifications 00809-0100-3385 February 2019 Ordering Information Table 1-2: Rosemount 385 ph/ORP sensor ordering information Model Sensor type pH/ORP Sensor Tube Material Titanium Sensor Compatibility/TC No TC - For Rosemount 1181 ORP, 1060, 1023 Pt-100 - For Rosemount 1054/1054A/B ORP...

  • Page 10: Product Certifications

    Description and Specifications Reference Manual February 2019 00809-0100-3385 Product Certifications Please see online certificates for further details. IECEx Sensors with no preamp – Ex ia IIC T4 Ga (-20°C ≤ Ta ≤ +60°C) Per standards IEC60079-0 : 2011, IEC 60079-11 : 2011 ATEX Sensors with no preamp –...

  • Page 11: Section 2: Installation

    Mechanical Installation The Rosemount 385 Sensor may be installed through a 1-1/2 in. weldalet or in a pipe tee or “Y”, as shown in Figure 2-1, when used with a ball valve. Insert the end of the sensor to a depth suffi cient to ensure that the glass bulb is continuously wetted by the process fluid.
  • Page 12 Installation Reference Manual February 2019 00809-0100-3385 When the sensor assembly is properly secured by the ball valve assembly, the valve may be opened and the sensor positioned into the process at the desired depth and orientation. CAUTION The sensor must be captured by the valve assembly and the male connector so that it cannot be blown free by process pressure if mishandled during insertion or retraction.
  • Page 13 Reference Manual Installation 00809-0100-3385 February 2019 Figure 2-2: Dimensional Drawing Installation...

  • Page 14: Electrical Installation

    Installation Reference Manual February 2019 00809-0100-3385 Electrical Installation Make electrical connections as shown on Figures 2-3 using the following guidelines: Pay particular attention to the analyzer or transmitter model number when following details on the wiring diagrams to ensure that the connections are made to the proper terminals.
  • Page 15 Reference Manual Installation 00809-0100-3385 February 2019 Figure 2-4: Wiring Details for Option 53 Installation...
  • Page 16 Installation Reference Manual February 2019 00809-0100-3385 Installation...

  • Page 17: Section 3: Startup And Calibration

    (standard solutions of known pH values) or in a process grab sample whose pH value may be checked by a calibrated laboratory or portable pH meter. Rosemount 385 ORP Calibration Most industrial applications have a number of ORP reactions occurring in sequence or simultaneously.
  • Page 18 Startup and Calibration Reference Manual February 2019 00809-0100-3385 Startup and Calibration...

  • Page 19: Section 4: Maintenance

    Reference Manual Maintenance 00809-0100-3385 February 2019 Section 4: Maintenance Sensor Removal Remove the sensor from the ball valve as follows: Be certain system pressure at the sensor is below 64 psig (542 kPa) before proceeding with the retraction. It is also recommended that the personnel wear a faceshield and have a stable footing.
  • Page 20 Maintenance Reference Manual February 2019 00809-0100-3385 CAUTION The solution used in the following step is an acid and should be handled with care. Follow the directions of the acid manufacturer. Wear the proper protective equipment. Do not let the solution come in contact with skin or clothing.
  • Page 21 Reference Manual Maintenance 00809-0100-3385 February 2019 4.2.3 Preamplifier Check (For Rosemount 1003/1023, 1050/1060 Transmitters) To determine if the preamplifier is operable, proceed as follows: Using a BNC Shorting Cap (Refer to Figure 4-1) or a paper clip, short the preamplifier connection.

  • Page 22: Sensor Tube Replacement

    00809-0100-3385 Sensor Tube Replacement Replacement of a Rosemount 385 Sensor involves the removal and installation of two sets of male connectors, one at the process end of the sensor, and the other at the junction box end. Refer to Section 4.1 for removal of the sensor. Refer to Figure 4-2.
  • Page 23 Reference Manual Maintenance 00809-0100-3385 February 2019 Cover the 1" MNPT pipe threads of the male connector body (A) with Teflon tape (not provided) to protect them from galling during reinstallation. CAUTION Make sure lubricant does not contact any part of the sensor tip particularly the glass bulb. Pass the wires from the new sensor through the process end male connector (A).

  • Page 24: Rosemount 385 Orp

    Maintenance Reference Manual February 2019 00809-0100-3385 Rosemount 385 ORP 4.4.1 Platinum Electrode Check The platinum electrode may be checked 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 solution.

  • Page 25: Section 5: Troubleshooting

    Reference Manual Troubleshooting 00809-0100-3385 February 2019 Section 5: Troubleshooting Troubleshooting Table 5-1: Troubleshooting Trouble Probable Cause Remedy Meter reads off scale. (Display Defective preamplifier. Check preamplifier as instructed in Section reads overrange.) 4.2.3 and replace preamplifier if defective. T.C. element shorted. Check T.C.
  • Page 26 Troubleshooting Reference Manual February 2019 00809-0100-3385 Troubleshooting...

  • Page 27: Section 6: Accessories

    Reference Manual Accessories 00809-0100-3385 February 2019 Section 6: Accessories Accessories Table 6-1: Accessories for Rosemount 385 sensor Part Number Description 23166-00 Connector Kit, 1x1" 316 SS, with O-Ring Groove 23166-01 Connector Kit, 1x1" Titanium, with O-Ring Groove 23240-00 Ball valve Kit, 1-¼" 316 SS (Code 21)
  • Page 28 Accessories Reference Manual February 2019 00809-0100-3385 Accessories...

  • Page 29: Ec Declaration Of Conformity

    Reference Manual EC Declaration of Conformity 00809-0100-3385 February 2019 EC Declaration of Conformity Note: Please see website for most recent Declaration. EC Declaration of Conformity...

  • Page 30: Ec Declaration Of Conformity

    EC Declaration of Conformity Reference Manual February 2019 00809-0100-3385 EC Declaration of Conformity...

  • Page 31: Ec Declaration Of Conformity

    Reference Manual EC Declaration of Conformity 00809-0100-3385 February 2019 EC Declaration of Conformity...
  • Page 32 China RoHS Table Reference Manual February 2019 00809-0100-3385 China RoHS Table...

  • Page 33: Intrisicallly Safe Sensor Installation Drawing - Fm

    Reference Manual FM Installation 00809-0100-3385 February 2019 Intrinsically Safe Sensor Installation Drawing - FM FM Installation...
  • Page 34 ©2019 Emerson. All rights reserved. Emerson The Emerson logo is a trademark and service mark of Emerson Electric Co. Rosemount is a mark of 8200 Market Blvd. one of the Emerson family of companies. All other marks are the property of their respective Chanhassen, MN 55317, owners.

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