Summary of Contents for Honeywell DirectLine DL421
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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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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.
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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...
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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...
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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®...
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.
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.
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)
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 _ _ _ _ _ _ _ _ _...
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.)
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.
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.
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.
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)
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...
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...
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...
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.
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.
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.
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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...
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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...
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.
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).
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. •...
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...
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.
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.
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). •...
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.
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Spare Parts DirectLine® DL421 Sensor Module User Manual 2/04...
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Spare Parts 2/04 DirectLine® DL421 Sensor Module User Manual...
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...
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Appendix: CE Mark Applications 2/04 DirectLine® DL421 Sensor Module User Manual...
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.
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2/04 DirectLine® DL421 Sensor Module User Manual...
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Industrial Measurement and Control Honeywell 1100 Virginia Drive Fort Washington, PA 19034 www.honeywell.com/imc 70-82-25-102 0204 Printed in USA...