YOKOGAWA FU20 Instruction Manual
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YOKOGAWA FU20 Instruction Manual

Ph/orp combination sensor
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Instruction
Manual
Model FU20
pH/ORP Combination sensor
IM 12B06J03-02E-E
11th edition

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Summary of Contents for YOKOGAWA FU20

  • Page 1 Model FU20 Instruction pH/ORP Combination sensor Manual IM 12B06J03-02E-E 11th edition...
  • Page 2 IM 12B06J03-02E-E...
  • Page 3 IM 12B06J03-02E-E...
  • Page 4 IM 12B06J03-02E-E...

  • Page 5: Table Of Contents

    3.3 Mounting the sensor 4. DIMENSIONS 5. WIRING 5.1 Connections 5.2 Definition EXA/FLXA terminal numbers to FU20 sensor 5.3 Settings for PH402G and PH202G(S) 5.4 Settings for PH150, PH450G and FLXA 6. GENERAL CALIBRATION & MAINTENANCE PROCEDURE 6.1 Calibration for pH measurement 6.2 Calibration for ORP and rH measurement...

  • Page 6: Preface

    (typically) 12 The Model FU20 offers a simple and cost months from the date of shipment from the effective solution for a wide variety of manufacturer.

  • Page 7: Serial Number

    1.4 Serial number The Serial number is defined by nine (9) alphanumeric characters: X 1 X 2 Production location X 3 X 4 Year/Month code X 5 X 6 X 7 X 8 X 9 Tracking number Example: N3P600028 Method used for year/month numbering Table 1: Production Year code Table 2: Production Month code Year...

  • Page 8: General Specifications

    : 8 ± 15 mV Linearity PH (Slope) : > 96 % (of theoretical value) NOTE: The temperature sensor included in the FU20 is designed for cell compensation and for indication. It is NOT designed for process temperature control. 2.4 Dynamic specifications Response time pH : t 90 <...

  • Page 9: Regulatory Standards

    Ui = 18 V; Ii = 170 mA; Pi = 0.4 W; Li = 0 mH; Ci = 0 nF (VP type) or 3.6 nF (permanently connected cable) or certified intrinsically safe Yokogawa pH/ORP transmitter Model FLXA21 series or Model PH202S series.

  • Page 10: Installation Of Fu20

    Remove the sensor from its shipping box For optimum measurement results, the and slide of the so-called ‘wet pocket’, the FU20 should be installed in a location that tube filled with solution to prevent drying offers an acceptable representation of the...
  • Page 11 The FU20 can also be mounted using Note: DO NOT over tighten the adapter to one of the optional quick-removal adapters prevent damage. (/NSS, /NTI, /BSS, /BTI, see Figure 3). For a detailed description of these adapters see Sections 4 and 7 of this Instruction Manual.
  • Page 12 FU20 + FD40 FU20 + PR10 Fitting /HCNF, SPRAY CLEANER O-ring Cleaning Adapter Solution ( /FPS ) (water, acid, etc.) K1547PH FU20 O-ring K1547PF 60mm Figure 4. Installation examples for the FU20 IM 12B06J03-02E-E...

  • Page 13: Dimensions

    /NSS, /NTI, /BSP, /BTI /FPS ø 35.5 (1.4”) ø 30.0 (1.18”) ø 36.0 (1.42”) 1” NPT or ISO 7/1-R1 ø 39.0 (1.54”) Figure 6. Dimensions 1” FU20 adapter Stainless Steel & Titanium and FU20 adapter for FF40, FS40 and FD40 fittings IM 12B06J03-02E-E...

  • Page 14: Wiring

    5. WIRING 5.1 Connections The FU20 sensor is provided with a fixed cable or Variopin (VP/VS) connector. 5.2 Definition EXA/FLXA terminal numbers to FU20 sensor FU20-03/05/10/20 wire # EXA/FLXA pH+ORP terminal pH compensated pH+rH FU20-VP and FU20-VS WU10-V-S WU10-V-D, WE10...

  • Page 15: Settings For Ph402G And Ph202G(S)

    6. GENERAL CALIBRATION & MAINTENANCE PROCEDURE 6.1 Calibration for pH measurement To calibrate the FU20 pH/ORP sensor, two buffer solutions with known pH values are required. It is recommended that one buffer solution has a value near to pH 7.00.

  • Page 16: Calibration For Orp And Rh Measurement

    The rH value is a function of the reference system and the pH value of the buffer solution. The FU20 sensor has a reference system of saturated Silver/Silver Chloride (Ag/AgCl). The commonly used standards for ORP and rH calibration are made from Chinhydron (Quinhydrone) powder dissolved in pH buffer solutions (1 g / 200 ml).

  • Page 17: Model Codes

    7. MODEL CODES Model Code Suffix Option Description FU20 Wide Body sensor Cable length 3 m cable 5 m cable not available for FTD, FTS and MTS 10 m cable 20 m cable No Cable; Vario Pin connector No Cable; Vario Pin for SENCOM connector Temp.

  • Page 18: Spare Parts

    Viton O-rings 29.82*2.62 (5 pcs) for 1” adapter K1500FS EPDM O-rings 29.82*2.62 (5 pcs) for 1” adapter K1500FT Silicone O-rings 29.82*2.62 (5 pcs) for 1” adapter Cleaning system for FU20 K1547PJ Hastelloy cleaning system (HCNF) K1547PG Hastelloy nozzle and mounting set (HCNF)

  • Page 19: Chemical Compatibility Chart

    Note: Information in this list is based on our general experience and literature data and x = shortens useful life given in good faith. However Yokogawa is unable to accept responsobility for - = cannot be used claims related to this information.
  • Page 20 Yokogawa has an extensive sales and YOKOGAWA ELECTRIC ASIA Pte. LTD. YOKOGAWA ELECTRIC CORPORATION 5 Bedok South Road World Headquarters distribution network. Singapore 469270 9-32, Nakacho 2-chome, Musashino-shi Tokyo 180-8750 Singapore Please refer to the European website Japan www.yokogawa.com/sg www.yokogawa.com (www.yokogawa.com/eu) to contact your...

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