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Honeywell DirectLine DL421 User Manual

Sensor module for durafet ii, durafet iii, meredian ii, and hpw7000 ph electrodes
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DirectLine® DL421 Sensor Module
®
®
for Durafet
II, Durafet
III,
®
Meredian
II, and HPW7000 pH
Electrodes
User Manual
70-82-25-102
Rev. 5
2/04
Industrial Measurement and Control

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  Summary of Contents for Honeywell DirectLine DL421

  • Page 1 DirectLine® DL421 Sensor Module ® ® for Durafet II, Durafet III, ® Meredian II, and HPW7000 pH Electrodes User Manual 70-82-25-102 Rev. 5 2/04 Industrial Measurement and Control...
  • Page 2 Contact your local sales office for warranty information. If warranted goods are returned to Honeywell during the period of coverage, Honeywell will repair or replace without charge those items it finds defective. The foregoing is Buyer's sole remedy and is in lieu of all other warranties, expressed or implied, including those of merchantability and fitness for a particular purpose.
  • Page 3 DirectLine® Sensor. Insert 70-82-10-01, a quick reference guide for configuring and calibrating the DL421, should accompany this document. Contacts World Wide Web The following lists Honeywell’s World Wide Web sites that will be of interest to our customers. Honeywell Organization WWW Address (URL) Corporate http://www.honeywell.com...
  • Page 4: Table Of Contents

    Contents 1. INTRODUCTION ........................1 Overview............................1 Electronics Module ......................... 1 Operator Interface........................... 2 Specifications..........................3 Model Selection Guide ........................4 2. INSTALLATION ........................5 Assembly and Wiring ........................5 Integral Mounting ..........................7 Remote Mounting ........................... 8 Conduit connections ........................13 3.
  • Page 5 Tables Table 2-1 Assembly and Wiring Procedure for Field Wiring Connector___________________________ 6 Table 2-2 Integral Mounting Procedure (refer to Figure 2-3) __________________________________ 7 Table 2-3 Remote Mounting Procedure for Durafet II and Durafet III Electrodes __________________ 8 Table 2-4 Remote Mounting Procedure for Meredian II Electrodes_____________________________ 9 Table 2-5 Remote Mounting Procedure for HPW7000 Electrodes ____________________________ 10 Table 3-1 Buffer Groups and the pH standard values ______________________________________ 14 Table 3-2 Configuration Set Up Procedure ______________________________________________ 15...
  • Page 6 Figures Figure 1-1 DirectLine® Sensor ________________________________________________________ 1 Figure 1-2 Electronics Module _________________________________________________________ 2 Figure 2-1 Cordset Connection and Wiring ________________________________________________ 5 Figure 2-2 Field Wiring Connector ______________________________________________________ 6 Figure 2-3 Integral Mounting __________________________________________________________ 7 Figure 2-4 Remote Mounting _________________________________________________________ 11 Figure 2-5 Remote Mounting Hardware_________________________________________________ 12 Figure 7-1 Wiring for CE Mark Applications______________________________________________ 30 DirectLine®...
  • Page 7: Introduction

    4 mA to 20 mA, depending upon the pH value that is sensed by the electrode. The transmitted loop current is compensated for temperature internally using the standard Honeywell 8550 thermistor. For submersion or special wiring applications, the remote electronics module is compatible with the existing Durafet II, Meredian II or HPW7000 technology without modification.
  • Page 8: Operator Interface

    Introduction Figure 1-2 Electronics Module 1.3 Operator Interface The DirectLine® Sensor operator interface consists of three pushbuttons and one 4- digit, 7-segment LCD display with 3 decimal points, plus (+), and minus (–) signs. It is responsible for the display of measured values and configuration of parameter values.
  • Page 9: Specifications

    Introduction 1.4 Specifications Displayed pH 0-14 pH Displayed Temperature Range –10 °C to +110 °C (14 °F to 230 °F) Process Temperature –10 °C to +110 °C (14 °F to 230 °F) Sensor Survivable Temperature Range Durafet II & III –10 °C to +130 °C (14 °F to 266 °F) Meredian II 0 °C to 110 °C (32 °F to 230 °F)
  • Page 10: Model Selection Guide

    Introduction 1.5 Model Selection Guide Instructions Select the desired key number. The arrow to the right marks the selection available. Make the desired selections from Tables I through IV using the column below the proper arrow. A dot ( ) denotes availability. Key Number _ _ _ _ _ _ _ _ _...
  • Page 11: Installation

    Installation 2. Installation 2.1 Assembly and Wiring Depending on the customer selected output cable options, the DirectLine can be wired to an appropriate 16-42 Vdc source using 2 different methods: 1) cordset 2) field wiring with customer supplied cable. Refer to Section 7 for wiring for CE Mark applications. 2.1.1 Cordset Power Supply Minimum: 16 V @ 250 ohms (max.)
  • Page 12: Table 2-1 Assembly And Wiring Procedure For Field Wiring Connector

    Installation 2.1.2 Field Wiring Refer to Figure 2-2. The field wiring connector supports customer supplied cable with an outer diameter of 4-6mm. Table 2-1 Assembly and Wiring Procedure for Field Wiring Connector Step Procedure Disassemble field wiring connector a) Unscrew parts to separate pressure screw, clamp type cage, gasket, housing and female insert.
  • Page 13: Integral Mounting

    Installation 2.2 Integral Mounting Table 2-2 Integral Mounting Procedure (refer to Figure 2-3) Step Procedure Connect Electrode to Pipe and Electronics Assembly Screw the electrode into the pipe tee (3/4 “ NPT thread). Make sure that the final position of the installed electronics module allows the display to be easily viewed by plant personnel.
  • Page 14: Remote Mounting

    Installation 2.3 Remote Mounting Table 2-3 Remote Mounting Procedure for Durafet II and Durafet III Electrodes Step Procedure (Refer to Figure 2-4 and Figure 2-5) Apply a thin film of silicon grease to the ID of electronics module’s remote mounting cavity.
  • Page 15: Table 2-4 Remote Mounting Procedure For Meredian Ii Electrodes

    Installation When the DL421 is specified with Table II = 3, the Remote Connector Assembly (part number 51500768-001) is supplied loose for connection of the Meredian II pH electrode cable to the DL421 module. Table 2-4 gives the mounting procedure. Table 2-4 Remote Mounting Procedure for Meredian II Electrodes Step Procedure (Refer to Figure 2-4 and Figure 2-5)
  • Page 16: Table 2-5 Remote Mounting Procedure For Hpw7000 Electrodes

    Installation When the DL421 is specified with Table II = 4, the Remote Connector Assembly (part number 51500768-002) is supplied loose for connection of the HPW7000 electrode cables to the DL421 module. Table 2-5 gives the mounting procedure. Table 2-5 Remote Mounting Procedure for HPW7000 Electrodes Step Procedure (Refer to Figure 2-4 and Figure 2-5) Turning counterclockwise, remove strain relief/cover combination from the remote...
  • Page 17: Figure 2-4 Remote Mounting

    Electronics White Temperature Compensation Lead Module Module White Temperature Compensation Lead Pigtail Shield Lead 1 Meg-ohm resistor (pre-installed by Honeywell) Coax Measuring Electrode Lead and 1 Meg-ohm resistor (pre-installed by Honeywell) Locking Screw in Rear of Housing Protective Vinyl Boot...
  • Page 18: Figure 2-5 Remote Mounting Hardware

    Installation Hose Clamp Slot for Pipe Mounting (Hose Clamp included in kit) Through Hole for DIN Rail Mounting Metal clip for Gray clip for “U” DIN rail mounting “G” DIN rail mounting Mounting Kit View from End View from End Panel Panel Panel...
  • Page 19: Conduit Connections

    Installation 2.4 Conduit connections The DirectLine provides a male ½” NPT thread to accommodate a customer conduit connection. Use ½” conduit coupling (min. 38.1mm (1.5”) long) on DL conduit connection to clear cordset connector. Conduit can not be used with field wiring connector due to size restriction.
  • Page 20: Configuration

    Configuration 3. Configuration 3.1 Overview Configuration Parameters Set Up consists of configuring the following functions: • Buffer Group Selection – Only used with Auto Buffer Recognition calibrations. Determines the set of standard pH buffer values to be used for Zero (standardization) and Slope calibration by automatic buffer recognition.
  • Page 21: Configuration Set Up Procedure

    Configuration 3.2 Configuration Set Up Procedure ATTENTION: In Table 3-2, under the Press column: • Hold means to hold the button down until the display changes. • Momentarily means to press and release the indicated button. From the Online pH display, follow this procedure. ATTENTION: If no key is pressed for 60 seconds, the display will abort the entry mode and default to Online Display.
  • Page 22 Configuration Step Operation Press Display Enter Noise MODE nSUP (for 1 second) then, Suppression Momentarily (Noise Suppression Frequency Selection) Frequency Edit Noise Suppression MODE Flashing Display – You are now in EDIT mode Frequency Hold (Value of current Frequency selection) Select desired To select 50 Hz or 60 Hz (default) Frequency...
  • Page 23 Configuration Step Operation Press Display 100 % Calibration AdJH Momentarily Adjust 100 % MODE AdJH (flashes) – You are now in EDIT mode Calibration Hold Range: 19.60 to 20.40 mA typically (default 20.00 mA) +AdJH (increments value) −AdJH (decrements value) Momentarily Save 100 % Calibration MODE...
  • Page 24: Calibration

    Calibration 4. Calibration 4.1 Calibration Diagnostics Introduction The manual and automatic standardization and slope adjustments change the zero offset and the percent theoretical slope calibration diagnostics used by this system. These values are viewed as read-only information. It is good practice to observe these values after calibration.
  • Page 25: Calibration

    Calibration Zero Offset pH Value and Percent Theoretical Slope Value a) Momentarily press to view the Zero Offset value. From this display press and hold the button until the Zero Offset pH value resets to factory default “0.00”. The Percent Theoretical Slope value resets to factory default “100.0” at the same time (approximately 10 seconds).
  • Page 26: Table 4-1 Standard Ph Buffer Values

    Calibration Table 4-1 Standard pH Buffer Values Temp °C Group Buffer 2.01 2.01 2.01 2.01 2.00 2.00 2.00 2.00 2.00 2.00 2.00 (default) 4.01 3.99 4.01 3.99 4.00 4.00 4.01 4.02 4.03 4.04 4.05 7.13 7.10 7.07 7.05 7.02 7.00 6.99 6.98 6.97...
  • Page 27: Table 4-2 Zero (Standardization) Calibration Procedure

    Calibration Calibration Procedures ATTENTION: CAL2 must be done within 10 minutes of CAL1, otherwise CAL1 must be repeated to enable CAL2. ATTENTION: In Table 4-2 and Table 4-3, under the Press column: • Hold means to hold the button down until the display changes. •...
  • Page 28: Calibration In High Purity Water

    Calibration Table 4-3 Slope Calibration Procedure Step Operation Press Display Enter Slope Calibration CAL2 Hold For Sample (Manual) calibration, go to step 2A. For Auto Buffer Recognition calibration, go to step 2B. Do Sample (Manual) SCAL for one second then, Calibration Momentarily displays Live Buffer Value...
  • Page 29: Operation

    Operation 5. Operation 5.1 Displays Overview The DirectLine® DL421 displays the pH value, Temperature, Zero Offset pH value, and Percent Theoretical Slope online. The table below describes these parameters. Table 5-1 Online Parameter Descriptions Parameter Description Online pH Measured pH expressed with fixed hundredths decimal precision. Range: 0.00 to 14.00 Online Temperature Measured temperature expressed with fixed tenths decimal precision.
  • Page 30: Table 5-2 Display Navigation Procedure

    Operation ATTENTION: In Table 5-2, under the Press column: • Momentarily means to press and release the indicated button. Table 5-2 Display Navigation Procedure Step Operation Press Display View Online pH value MODE (measured pH) Momentarily View Online Temperature MODE (measured temperature in °C or °F) Momentarily Proceed to step 2A or step 3.
  • Page 31: Diagnostic Error Messages

    Operation 5.2 Diagnostic Error Messages When a diagnostic error or status condition occurs, the Online Display alternates between measured pH and a text message. Table 5-3 Online Diagnostic Errors What you see What it is What to do CNFG Data error detected. Reset unit or cycle power.
  • Page 32: Unit Reset

    Operation 5.3 Unit Reset Overview Unit Reset initializes all of the DirectLine® Sensor’s calibration and configuration data to factory default values. Procedure • From the Online pH display, press and hold the buttons simultaneously until “rSEt” appears on the display (minimum of 10 seconds). •...
  • Page 33: Spare Parts

    Field Wiring connector The Field Wiring Connector is an all-plastic screw terminal M12 female type that can be purchased directly from Honeywell or from multiple vendors including: Turck Industries Part Number B8141-0 for a M12 field wiring connector that accommodates customer supplied cable.
  • Page 34 Spare Parts DirectLine® DL421 Sensor Module User Manual 2/04...
  • Page 35 Spare Parts 2/04 DirectLine® DL421 Sensor Module User Manual...
  • Page 36: Appendix: Ce Mark Applications

    Appendix: CE Mark Applications 7. Appendix: CE Mark Applications In situations where the pH display appears to fluctuate (short deviations above 0.2 pH points) due to field wiring electrical noise, the noise may be reduced by making the additional ground connections as described in Figure 7-1. Output cable Step 1 Connect or mount...
  • Page 37 Appendix: CE Mark Applications 2/04 DirectLine® DL421 Sensor Module User Manual...
  • Page 38: Sales And Service

    HONEYWELL S.A.I.C. 300 Yorkland Blvd. PO BOX 138 Naviglio A.S. BELGRANO 1156 NORTH YORK, Milnerton 7435 ITALY (Honeywell Turkey A.S.) BUENOS AIRES ONTARIO REPUBLIC OF SOUTH Tel. : 39 02 92146 1 Emirhan Cad No 144 ARGENTINA M2J 1S1 AFRICA Barbaros Plaza C.
  • Page 39 2/04 DirectLine® DL421 Sensor Module User Manual...
  • Page 40 Industrial Measurement and Control Honeywell 1100 Virginia Drive Fort Washington, PA 19034 www.honeywell.com/imc 70-82-25-102 0204 Printed in USA...