Honeywell DirectLine DL422 User manual

Industrial Measurement and Control
DirectLine® DL422 Sensor Module
for Meredian®II ORP Electrodes
User Manual
70-82-25-107
Rev. 2
1/03

ii DirectLine® DL422 Sensor Module User Manual 1/03
Notices and Trademarks
Copyright 2003 by Honeywell
Revision 2 January 2003
Warranty/Remedy
Honeywell warrants goods of its manufacture as being free of defective materials and faulty
workmanship. 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. Specifications may
change without notice. The information we supply is believed to be accurate and reliable as of this
printing. However, we assume no responsibility for its use.
While we provide application assistance personally, through our literature and the Honeywell web site, it
is up to the customer to determine the suitability of the product in the application.
Industrial Measurement and Control
Honeywell
1100 Virginia Drive
Fort Washington, PA 19034
DirectLine is a registered trademark of Honeywell
Meredian is a U.S. registered trademark of Honeywell
Other brands or product names are trademarks of their respective owners
Insert 70-82-10-02 should accompany this document.

1/03 DirectLine® DL422 Sensor Module User Manual iii
About This Document
Abstract
This manual contains all the information that is needed to install, configure, calibrate,
operate, and troubleshoot the DirectLine® Sensor. Insert 70-82-10-02, a quick reference
guide for configuring and calibrating the DL422, 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
Industrial Measurement and Control http://www.honeywell.com/imc
International http://www.honeywell.com/Business/global.asp
Telephone
Contact us by telephone at the numbers listed below.
Organization Phone Number
United States and
Canada
Honeywell 1-800-423-9883
[phone] Tech. Support
1-888-423-9883 Q&A Faxback
(TACFACS)
1-800-525-7439 Service
Symbol Definitions
The following table lists any symbols used in this document to denote certain conditions.
Symbol Definition
Earth Ground. Functional earth connection. NOTE: This connection shall be bonded to
Protective earth at the source of supply in accordance with national and local electrical
code requirements.

iv DirectLine® DL422 Sensor Module User Manual 1/03
Contents
1. INTRODUCTION....................................................................................................................1
1.1 Overview......................................................................................................................................... 1
1.2 Electronics Module ......................................................................................................................... 2
1.3 Operator Interface........................................................................................................................... 2
1.4 Specifications.................................................................................................................................. 3
1.5 Model Selection Guide ................................................................................................................... 4
2. INSTALLATION ..................................................................................................................... 5
2.1 Assembly and Wiring...................................................................................................................... 5
2.2 Integral Mounting............................................................................................................................ 7
2.3 Remote Mounting ........................................................................................................................... 8
2.4 Conduit connections ..................................................................................................................... 10
3. CONFIGURATION ............................................................................................................... 11
3.1 Overview....................................................................................................................................... 11
3.2 Configuration Set Up Procedure................................................................................................... 12
4. CALIBRATION.....................................................................................................................14
4.1 Calibration Diagnostics................................................................................................................. 14
4.2 Calibration Diagnostic Reset ........................................................................................................ 14
4.3 Calibration..................................................................................................................................... 14
5. OPERATION ........................................................................................................................ 17
5.1 Displays ........................................................................................................................................ 17
5.2 Diagnostic Error Messages .......................................................................................................... 18
5.3 Unit Reset ..................................................................................................................................... 19
6. SPARE PARTS....................................................................................................................20
7. SALES AND SERVICE ........................................................................................................ 21

1/03 DirectLine® DL422 Sensor Module User Manual v
Tables
Table 2-1 Assembly and Wiring Procedure for Field Wiring Connector___________________________ 6
Table 2-2 Integral Mounting Procedure for ORP Electrodes __________________________________ 7
Table 2-3 Remote Mounting Procedure for ORP Electrodes__________________________________ 8
Table 3-1 Configuration Set Up Procedure ______________________________________________ 12
Table 4-1 Oxidation-Reduction Potential of Reference Solutions at Specified Temperature_________ 15
Table 4-2 Zero (Standardization) Calibration Procedure ____________________________________ 16
Table 5-1 Online Parameter Descriptions _______________________________________________ 17
Table 5-2 Display Navigation Procedure ________________________________________________ 17
Table 5-3 Online Diagnostic Errors ____________________________________________________ 18
Table 5-4 Factory Default Values _____________________________________________________ 19