YOKOGAWA PR20 User Manual
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YOKOGAWA PR20 User Manual

Retractable fitting for combined ph/redox electrodes
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User
Manual
Model PR20
Retractable fitting for
combined pH/redox electrodes
IM 12B6K3-E-E
9th Edition

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Summary of Contents for YOKOGAWA PR20

  • Page 1 User Model PR20 Retractable fitting for Manual combined pH/redox electrodes IM 12B6K3-E-E 9th Edition...
  • Page 2 IM 12B6K3-E-E...

  • Page 3: Table Of Contents

    CONTENTS 1. GENERAL 1-1.Description 1-2.Features 1-3.Safety precautions 2. UNPACKING AND CHECKING 2-1.Unpacking and inspection 2-2.Mounting location 2-3.Specifications 2-4.Model and codes 2-5.Dimensions 3. INSTALLATION AND WIRING 3-1.General 3-2.Accessories 3-3.Preparing the electrode for use 3-4.Mounting the electrode 3-5.Probe insertion 3-6.Adjusting the iinsersion depth 3-7.Wiring 4.

  • Page 4: General

    The combined pH/reference elec- damages or accidents which occur- trode can be replaced or calibrated red by operation of the PR20 fitting. easily. The especially designed cable has integrated leads for the The installation of the probe is to be...

  • Page 5: Unpacking And Checking

    Malfunction 2-2. Mounting location of any of the delivered goods or The PR20 fitting is intended to be parts, can only lead to replacement used for in-line pH measurement. of the damaged parts. No claims...

  • Page 6: 2-3.Specifications

    2-3. Specifications Materials (wetted parts) Probe Model PR20-S : Stainless steel AISI 316 Model PR20-T : Titanium O-ring seals : Viton 70° shore Silicone rubber 50° shore Non-wetted : Stainless steel (AISI 316) and parts polyphenylene sulphide (PPS) Process conn.

  • Page 7: 2-4.Model And Codes

    2-4. Model and codes Model Suffix code Description PR20 Retractable fitting Material Stainless steel AISI 316 Titanium Probe length*) 0.5 mtr. 1 mtr. Cable length 5 mtr. 10 mtr. Temp. sensor Pt1000 Pt100 Style Style code Adapters /YYY See separate table Certificates Material certificate 3.1B according to...
  • Page 8 Options Adapter Option code Drawing Model PR20-S PR20-T Adapter only 1" BSP-male /SBS /TBS 1" NPT-male /SNS /TNS DIN flange DN25 PN16 /SDS /TDS B, C ANSI flange 1" 150 lbs /SUS /TUS B, C Adapters and ball-valve 1" BSP-female...
  • Page 9 NW25 1 inch 95 (3.75) ø115 ø108 ø42.5 ø42.5 ø85 ø79.2 ø14 ø15.7 Internal thread (both sides) ISO 228/1-G 1 OR 1 - 11 1/2 NPT ACC. ANSI B 1201 ISO 229/1-G 1 1/4 125 (4.9) Glanges (both sides) 63 (2.55) DN25-PN10 acc.

  • Page 10: 2-5.Dimensions

    2-5. Dimensions mm (inch) 550 or 1050 (21.65 or 41.35) ø 55 ø 48 ø 34 (ø 2.16) (ø 1.9) (ø 1.3) ø 21 (9.45) (ø 0.83) ø 23 (ø 0.90) 390 or 890 (15.35 or 35) ø 48 (ø 1.9) DIN 85 (3.35) ANSI: 79.4 (3.125) 200 or 700...

  • Page 11: Installation And Wiring

    (see fig. 2-1). Installation in a bend of a pipe-line is a good measurement position. When inserting the PR20 retracta- ble fitting in a perpendicular position to the process flow, the flow veloci- ty will put a mechanical force on the probe.

  • Page 12: 3-2.Accessories

    These O-rings are sup- cess without the electrode moun- plied with the electrode and NOT ted! Prevent liquid to come into used in the PR20 retractable fit- contact with the connector plug. ting. Start with the assembly of the elec- 3.
  • Page 13 Move the cable Move the pigtail Unscrew the pigtail. One will hear clicking. Move the plug-in connector Press Turn thight figure 3.3 preparing the figure 3.4 Mounting the electrode in the PR20 electode for use fitting IM 12B6K3-E-E...

  • Page 14: 3-5.Probe Insertion

    2. Pushing the probe into the pro- 3-5. Probe insertion cess needs a force to overcome Insert the probe according to next the pressure of the system and procedure (see also fig. 3-5): the friction of the damping rings 1. Position the probe for insertion. in the fitting.

  • Page 15: 3-6.Adjusting The Iinsersion Depth

    (see fig. 3-6). An insertion depth of at least 0.2 m is recommended for 3-7. Wiring a fast response of the temperature The cable used in the PR20 sensor. This sensor is located retractable fitting is prepared for above the combined electrode.

  • Page 16: Maintenance

    3. Close the ball-valve (*). separated from the process. The 4. Unlock the probe. PR20 retractable fitting can be 5. Take out the probe. retracted from the measuring posi- tion in the maintenance position by * If flush ports are available the sen-...

  • Page 17: 4-3.Calibration

    If cleaning with hot water is not 4-3. Calibration water is not sufficient, more aggres- It is recommended to start calibra- sive water based agents should be tion with a clean electrode. Always used. calibrate a new electrode. - Deposits of limes, hydroxides or carbonates can be removed by With the electrode connected to the immersing the electrode in a solu-...

  • Page 18: 4-4.Replacing The Electrode

    During calibration the temperature Now the electrode can be exchan- compensation should be active. It is ged for a new one. See §3-3 for advised to, calibrate with buffer preparation of the new electrode. solutions at a temperature near the process temperature.

  • Page 19: 4-6.Replacing The Cable

    4-7. Flush port connections The PR20 retractable fitting can be Two O-rings [28] are located inside equipped with (optional) flush ports the protection cage and need to be on the flanged adapters. This ena-...
  • Page 20 IM 12B6K3-E-E...

  • Page 21: Exploded View

    5. EXPLODED VIEW Cable with plug-in connector Cable gland Outer tube Positioning ring "Allan" screw Main fixing screw Squeezing ring (2pcs) Clamping ring Bushing (2pcs) O-rings (2pcs), Viton 70° shore (20.2x3.5) Fixing screws (2 pcs) Protection ring Inner tube O-ring Viton 70° shore (12x1) T-bar with key Fixing screws (2 pcs) Chamber...

  • Page 22: Spare Parts List

    6. SPARE PARTS LIST K1520AX O-ring set 1 26, 27, 28, 14 K1520AY O-ring set 2 10, 19 K1520KA Holder set (AISI 316) 24, 25, 26, 27, 28 K1520KE Holder set (titanium) 24, 25, 26, 27, 28 K1520AW Gland set K1520LP Cable 5 m (Pt100) K1520LQ Cable 5 m (Pt1000) K1520LS Cable 10 m (Pt100)
  • Page 23 IM 12B6K3-E-E...
  • Page 24 Fax (1)-770-251-2088 web-sites to contact your Fax (81)-422-55-1202 E-mail: info@yca.com nearest representative. E-mail: webinfo@mls.yokogawa.co.jp www.yokogawa.com/us www.yokogawa.co.jp YOKOGAWA ELECTRIC ASIA Pte. Ltd. YOKOGAWA EUROPE B.V. 5 Bedok South Road Databankweg 20 Singapore 469270 3821 AL AMERSFOORT Singapore The Netherlands Tel. (65)-241-9933 Tel.

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