User Manual
Pico Technology ADC-20/ADC-24 Terminal Board User Guide
DO117-5 iii
CONTENTS
CONTENTSCONTENTS
CONTENTS
1 Overview 1
1.1 Introduction 1
1.2 Terminals and component sites 2
1.3 Connecting to the data logger 2
2 Taking measurements 3
2.1 Voltage 3
2.1.1 General 3
2.1.2 Direct connection 3
2.1.3 Voltage divider connection 4
2.2 Current 6
2.3 Light level 7
2.4 pH 7
2.5 Temperature 8
2.5.1 Introduction 8
2.5.2 LM35DZ IC 8
2.5.3 Precision thermistor 9
2.5.4 Thermocouple 10
Appendix 1 – Thermistor conversion table 12
Appendix 2 – Thermocouple conversion table 12