Manual – Starflow Ultrasonic Doppler Instrument With
MicroLogger, Model 6526
Unidata Manual - 6526 Starflow User Manual Issue 17 01 2020.docx Contents 1
TABLE OF CONTENTS
1.0 Introduction ......................................................................................................................... 1
2.0 Operating Principles ........................................................................................................... 2
2.1 How Starflow Measures Velocity ......................................................................................... 3
2.2 Speed of Sound in Water .................................................................................................... 4
2.3 Factors Affecting Data Accuracy ......................................................................................... 5
3.0 Specifications ...................................................................................................................... 6
3.1 Battery Duration Table ........................................................................................................ 6
3.2 Memory Duration Table ....................................................................................................... 6
4.0 Installation ........................................................................................................................... 8
4.1 Site Considerations ............................................................................................................. 8
4.2 Starflow Mounting ................................................................................................................ 8
4.3 Power Considerations ....................................................................................................... 12
4.4 Starflow 9 Way Vented Cable Connection Table .............................................................. 12
4.5 Drying Tube and Desiccant ............................................................................................... 12
5.0 Starlog v4 starflow instrument only software installation ............................................ 12
6.0 Starflow Scheme Management ........................................................................................ 20
6.1 Scheme Editor ................................................................................................................... 20
7.0 Programming starflow ...................................................................................................... 33
8.0 Test Mode .......................................................................................................................... 35
8.1 Scheme Information .......................................................................................................... 36
8.2 Log Information .................................................................................................................. 36
8.3 Scheme Channels ............................................................................................................. 37
8.4 Log Buffers ........................................................................................................................ 37
9.0 Unloading Data from Loggers .......................................................................................... 39
10.0 Viewing Data ...................................................................................................................... 41
10.1 Source Data File ................................................................................................................ 41
10.2 Viewing the Data File ........................................................................................................ 42
11.0 Diagnostics ........................................................................................................................ 44
11.1 Comms Window ................................................................................................................ 44
11.2 Upgrade Firmware ............................................................................................................. 45
11.3 SDI-12 Test ....................................................................................................................... 46
11.4 Velocity Trace .................................................................................................................... 46
12.0 Velocity Histograms .......................................................................................................... 47
12.1 Inherent Factors in Doppler Histograms ........................................................................... 49
12.2 Channel Characteristics Affecting the Signal .................................................................... 50
13.0 Flow Measurement Extensions ........................................................................................ 59
13.1 Overview of Creating a Flow Scheme ............................................................................... 59
14.0 Computer Communication ............................................................................................... 69
14.1 Communications (Starlog) Protocol ................................................................................... 69