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HYDROLOGICAL SERVICES ML1-420 User Manual

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Hydrological Services Pty Ltd
1
MiniLog
Digital + 4-20mA + BattV + TempC Data Logger
Model : ML1-420
Operation Manual
HYDROLOGICAL SERVICES Pty Ltd
48-50 Scrivener Street
Liverpool NSW 2170
Australia
Ph. 61 2 9601 2022 Fax. 61 2 9602 6971
E-Mail: sales@hydrologicalservices.com
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HYDROLOGICAL SERVICES ML1-420 Specifications

General IconGeneral
BrandHYDROLOGICAL SERVICES
ModelML1-420
CategoryData Loggers
LanguageEnglish

Summary

Installation

3.1 Hardware Connections

Details physical connections for digital input, external power, and 4-20mA sensors.

3.1.1 Contact Closure input

Explains how to connect a voltage-free contact for digital input monitoring.

3.1.2 External Power Supply

Details the use and connection of external 12V power sources for the logger and transducers.

3.1.3 4-20mA Transducer Input

Describes connecting and measuring 4-20mA transducer signals for analog inputs.

3.1.4 Communications

Details the DB9 connector pinout for serial communication and power connections.

3.2 Setup and Configuring the Logger

Explains how to set up and configure logger parameters via software like WinComLog.

Operation

4.1 Commands / Syntax

Details the various commands for operating the MiniLog and their syntax for parameter setting.

4.1.2 Communications (BAUD, EV, RE, CLEAR)

Commands for setting baud rate, event output, response mode, and clear sequences.

4.1.5 Digital Channel Parameters (CHID, INC, TDAY, TOT, TYPED, UD)

Commands for configuring digital channel ID, increment, totals, type, and units.

4.1.8 Dump Log Records (DUR, DURV, ....DUALL, CLR, CLRV, MW, LOG)

Commands to dump various log records like rain, river, battery, temperature, and all data.

4.1.9 Miscellaneous (ID, SI, PASSWD, BYE, SLEEP, RESET, VER)

Commands for logger ID, site name, password, sleep mode, reset, and firmware version.

Data Output Format

Specification

Fault Finding

LED does not flash once a second.

Troubleshooting steps for when the LED indicator fails to flash as expected.

No communications from logger.

Steps to resolve issues with establishing communication with the logger.

Appendix A. Interfacing to a Modem

Appendix C. Surge Protection