Geokon Lc-2x16 User manual

Instruction Manual

Model LC-2x16

16 Channel VW Datalogger

No part of this instruction manual may be reproduced, by any means, without the written consent of Geokon, Inc.

The information contained herein is believed to be accurate and reliable. However, Geokon, Inc. assumes no responsibility

for errors, omissions or misinterpretation. The information herein is subject to change without notification.

(Doc Rev V, 4/24/2017)

Warranty Statement

Geokon, Inc. warrants its products to be free of defects in materials and workmanship, under normal use

and service for a period of 13 months from date of purchase. If the unit should malfunction, it must be

returned to the factory for evaluation, freight prepaid. Upon examination by Geokon, if the unit is found

to be defective, it will be repaired or replaced at no charge. However, the WARRANTY is VOID if the

unit shows evidence of having been tampered with or shows evidence of being damaged as a result of

excessive corrosion or current, heat, moisture or vibration, improper specification, misapplication, misuse

or other operating conditions outside of Geokon's control. Components which wear or which are damaged

by misuse are not warranted. This includes fuses and batteries.

Geokon manufactures scientific instruments whose misuse is potentially dangerous. The instruments are

intended to be installed and used only by qualified personnel. There are no warranties except as stated

herein. There are no other warranties, expressed or implied, including but not limited to the implied

warranties of merchantability and of fitness for a particular purpose. Geokon, Inc. is not responsible for

any damages or losses caused to other equipment, whether direct, indirect, incidental, special or

consequential which the purchaser may experience as a result of the installation or use of the product. The

buyer's sole remedy for any breach of this agreement by Geokon, Inc. or any breach of any warranty by

Geokon, Inc. shall not exceed the purchase price paid by the purchaser to Geokon, Inc. for the unit or

units, or equipment directly affected by such breach. Under no circumstances will Geokon reimburse the

claimant for loss incurred in removing and/or reinstalling equipment.

Every precaution for accuracy has been taken in the preparation of manuals and/or software, however,

Geokon, Inc. neither assumes responsibility for any omissions or errors that may appear nor assumes

liability for any damages or losses that result from the use of the products in accordance with the

information contained in the manual or software.

TABLE OF CONTENTS

1. INTRODUCTION .................................................................................................................................................. 1

2. GETTING STARTED............................................................................................................................................ 3

2.1 TRANSDUCER INSTALLATION.............................................................................................................................. 3

2.2 EARTH GROUND INSTALLATION ......................................................................................................................... 5

2.3 SOFTWARE INSTALLATION AND SETUP ............................................................................................................... 6

2.3.1 LogView Installation:................................................................................................................................. 6

2.3.2 Launching LogView:.................................................................................................................................. 7

2.3.3 LogView Workspaces:................................................................................................................................ 7

2.3.4 Adding Projects to LogView Workspaces: ................................................................................................. 9

2.3.5 Adding Dataloggers to LogView Projects:................................................................................................. 9

2.3.6 LC-2x16 Connection (8002-16-1, RS-232): ............................................................................................. 11

2.3.7 LC-2x16 Connection (8002-16-2, USB) :................................................................................................. 11

2.3.8 LC-2x16 Connection 8002-16-3 (RS_485):.............................................................................................. 11

2.3.9 Connecting to a Datalogger with LogView:............................................................................................. 12

2.3.10 Determining COM Port Numbers:......................................................................................................... 13

2.4 COMMUNICATION SETUP EXAMPLE USING HYPERTERMINAL .......................................................................... 14

3. COMMAND LIST................................................................................................................................................ 18

3.1BRNNN.......................................................................................................................................................... 18

3.2C ................................................................................................................................................................... 18

3.3CSMM/DD/YY/HH:MM:SS............................................................................................................................... 18

3.4DEFAULT.................................................................................................................................................... 18

3.5DF................................................................................................................................................................. 19

3.6DL................................................................................................................................................................. 19

3.7DNNNNN ....................................................................................................................................................... 19

3.8E ................................................................................................................................................................... 21

3.9GNN/C/TT/SZZZZZZ/SFFFFFF/SOOOOOO OR GNN/C/TT/SAAAAAA/SBBBBBB/SCCCCCC .................................... 21

3.10IDDDDDDDDDDDDDDDDD ........................................................................................................................ 26

3.11L............................................................................................................................................................... 27

3.12LN/LLLLL/III ............................................................................................................................................. 28

3.13LD............................................................................................................................................................ 28

3.14LE ............................................................................................................................................................ 28

3.15M.............................................................................................................................................................. 29

3.16MD........................................................................................................................................................... 29

3.17ME ........................................................................................................................................................... 29

3.18MXS ........................................................................................................................................................ 30

3.19MXN........................................................................................................................................................ 31

3.20N .............................................................................................................................................................. 31

3.21NA ........................................................................................................................................................... 31

3.22NADDD .................................................................................................................................................... 32

3.23ND ........................................................................................................................................................... 32

3.24NE............................................................................................................................................................ 32

3.25NS............................................................................................................................................................ 33

3.26PNNNN...................................................................................................................................................... 33

3.27R .............................................................................................................................................................. 33

3.28RESET..................................................................................................................................................... 33

3.29S............................................................................................................................................................... 34

3.30SCNNNNN................................................................................................................................................. 34

3.31SS............................................................................................................................................................. 34

3.32SPHH:MM ................................................................................................................................................. 35

3.33SR ............................................................................................................................................................ 36

3.34STHH:MM ................................................................................................................................................. 37

3.35SV............................................................................................................................................................ 37

3.36TEST........................................................................................................................................................ 37

3.37TF ............................................................................................................................................................ 38

3.38TNN/T........................................................................................................................................................39

3.39TR.............................................................................................................................................................39

3.40TR0...........................................................................................................................................................39

3.41VL ............................................................................................................................................................39

3.42V3.............................................................................................................................................................39

3.43V12...........................................................................................................................................................40

3.44WF............................................................................................................................................................40

3.45X...............................................................................................................................................................40

4. MAINTENANCE ..................................................................................................................................................41

4.1 CLEANING: ........................................................................................................................................................41

4.2 BATTERIES:........................................................................................................................................................41

4.2.1 Battery replacement instructions:.............................................................................................................42

5. TROUBLESHOOTING........................................................................................................................................43

5.1 UNIT WILL NOT RESPOND TO COMMUNICATIONS................................................................................................43

5.2 VIBRATING WIRE GAGE MEASUREMENT READS -999999.0.................................................................................43

5.3 GAGE MEASUREMENT (ANALOG OR VIBRATING WIRE)READS -999999.9...........................................................43

5.4 VIBRATING WIRE GAGE READING IS UNSTABLE..................................................................................................43

5.5 THERMISTOR MEASUREMENT SHOWS -99.9 DEGREES CELSIUS ..........................................................................43

APPENDIX A. SPECIFICATIONS.........................................................................................................................44

A.1 MEASUREMENT CAPABILITY ............................................................................................................................44

A.2 POWER ..............................................................................................................................................................44

A.3 MEMORY ..........................................................................................................................................................44

A.4 CLOCK ..............................................................................................................................................................45

A.5 SERIAL INTERFACE (ALL LC-2X16 MODELS): ...................................................................................................45

A.6 RS-485 NETWORK ............................................................................................................................................45

A.7 VIBRATING WIRE MEASUREMENT ....................................................................................................................46

A.8 INTERNAL/EXTERNAL TEMPERATURE MEASUREMENT .....................................................................................46

A.9 MAIN BATTERY MEASUREMENT.......................................................................................................................46

A.10. MULTIPLEXER RELAY....................................................................................................................................46

APPENDIX B. CONNECTOR PINOUTS ..............................................................................................................47

B.1 TRANSDUCER CABLE CONNECTIONS: ...............................................................................................................47

B.2 RS-232 CONNECTOR PINOUT (8002-16-1):.......................................................................................................49

B.3 USB CONNECTOR PINOUT (8002-16-2): ...........................................................................................................49

B.4 RS-485 CONNECTOR PINOUT (OPTIONAL,8002-16-3): .....................................................................................49

APPENDIX C. DATA FILE TRANSFER TO A WINDOWS PC ........................................................................50

C.1 DOWNLOADING DATA USING LOGVIEW ...........................................................................................................50

C.2 DOWNLOADING DATA USING HYPERTERMINAL (OR EQUIVALENT) ..................................................................52

APPENDIX D. SAMPLE DATA FILE ...................................................................................................................54

D.1 SAMPLE RAW DATA FILE..................................................................................................................................54

APPENDIX E. THERMISTOR TEMPERATURE DERIVATION.....................................................................55

APPENDIX F. NETWORKING ..............................................................................................................................58

F.1 DESCRIPTION.....................................................................................................................................................58

F.2 EXAMPLE OF A 3DATALOGGER NETWORKING SESSION....................................................................................59

APPENDIX G. LITHIUM COIN CELL .................................................................................................................60

G.1 DESCRIPTION: ...................................................................................................................................................60

G.2 REPLACEMENT PROCEDURE:.............................................................................................................................60

APPENDIX H. MODEL 8032-27 AND LOAD CELL WIRING ..........................................................................61

FIGURES, TABLES and EQUATIONS

FIGURE 1-LC-2X16 16-CHANNEL VW DATALOGGER.................................................................................................. 2

FIGURE 2-SELECT WORKSPACE NAME......................................................................................................................... 7

FIGURE 3-SELECT WORKSPACE FOLDER...................................................................................................................... 8

FIGURE 4-LOGVIEW MAIN WINDOW ........................................................................................................................... 8

FIGURE 5-LOGVIEW MAIN WINDOW WITH NEW PROJECT ............................................................................................ 9

FIGURE 6-LOGVIEW CONTEXT MENU........................................................................................................................ 10

FIGURE 7-DATALOGGER SETTINGS -CONNECTION OPTIONS ..................................................................................... 10

FIGURE 8-DATALOGGER HIGHLIGHTED -NOT CONNECTED....................................................................................... 11

FIGURE 9-DATALOGGER CONNECTION MISMATCH.................................................................................................... 12

FIGURE 10 -DATALOGGER CONNECTED...................................................................................................................... 12

FIGURE 11 -PC INTERNAL COM PORT........................................................................................................................ 13

FIGURE 12 -USB TO SERIAL CONVERTER COM PORTS .............................................................................................. 13

FIGURE 13 -HYPERTERMINAL CONNECTION DESCRIPTION......................................................................................... 14

FIGURE 14 -COM PORT SELECTION............................................................................................................................ 14

FIGURE 15 -COM PORT SETTINGS .............................................................................................................................. 15

FIGURE 16 -ORDER OF ARRAY USAGE ........................................................................................................................ 20

FIGURE 17 -BATTERY INSTALLATION DETAIL ............................................................................................................ 42

FIGURE 18 -LOGVIEW COLLECT DATA BUTTON......................................................................................................... 50

FIGURE 19 -DATA COLLECTION PROGRESS BAR......................................................................................................... 51

FIGURE 20 -DATA COLLECTION COMPLETE MESSAGE ............................................................................................... 51

FIGURE 21 -HYPERTERMINAL TRASNFER MENU ........................................................................................................ 52

FIGURE 22 -SPECIFY DATA CAPTURE FILE ................................................................................................................. 53

FIGURE 23 -HYPERTERMINAL/DATALOGGER COMMUNICATION ................................................................................ 53

FIGURE 24 -MODEL 8032-27 JUMPER WIRE ASSEMBLY ............................................................................................. 61

TABLE 1-TRANSDUCER CABLE CONNECTIONS............................................................................................................. 5

TABLE 2-VIBRATING WIRE GAGE TYPES ................................................................................................................... 24

TABLE 3-GAGE TYPE DESCRIPTIONS ......................................................................................................................... 24

TABLE 4-ENGINEERING UNITS MULTIPLICATION FACTORS ....................................................................................... 25

TABLE 5-LOGARITHMIC INTERVALS LIST .................................................................................................................. 28

TABLE 6-SCOMMAND INFORMATION ........................................................................................................................ 34

TABLE 7-SS COMMAND INFORMATION...................................................................................................................... 35

TABLE 8-TEST MENU INFORMATION ........................................................................................................................ 38

TABLE 9-APPROXIMATE OPERATING TIMES .............................................................................................................. 41

TABLE 10 -TRANSDUCER CABLE CONNECTIONS......................................................................................................... 48

TABLE 11 -RS-232 CONNECTOR PINOUT .................................................................................................................... 49

TABLE 12 -USB CONNECTOR PINOUT ........................................................................................................................ 49

TABLE 13 -RS-485 CONNECTOR PINOUT .................................................................................................................... 49

TABLE 14 -THERMISTOR RESISTANCE VERSUS TEMPERATURE ................................................................................... 55

TABLE 15 -BR55KA822J THERMISTOR RESISTANCE VERSUS TEMPERATURE............................................................ 56

TABLE 16 -COMMON CONDUCTOR CHART .................................................................................................................. 61

TABLE 17 -STANDARD VW LOAD CELL WIRING WHEN USING 8032-27.................................................................... 61

EQUATION 1-DISPLAYED GAGE READING USING LINEAR CONVERSION .................................................................... 22

EQUATION 2-DISPLAYED GAGE READING USING POLYNOMIAL CONVERSION ........................................................... 23

EQUATION 3-DIGITS CALCULATION USING LINEAR CONVERSION ............................................................................. 25

EQUATION 4-DIGITS CALCULATION USING POLYNOMIAL CONVERSION .................................................................... 25

EQUATION 5-CONVERT THERMISTOR RESISTANCE TO TEMPERATURE ...................................................................... 55

EQUATION 6-CONVERT THERMISTOR TYPE,BR55KA822J, RESISTANCE TO TEMPERATURE .................................... 56

EQUATION 7-CONVERT THERMISTOR TYPE,103JL1A, RESISTANCE TO TEMPERATURE............................................ 57

EQUATION 8-103JL1A THERMISTOR RESISTANCE VERSUS TEMPERATURE ............................................................... 57

1. INTRODUCTION

The Model LC-2x16 16 Channel Datalogger is a low cost, battery powered and easy to use

measurement instrument designed to read up to 16 vibrating wire sensors equipped with

thermistors.

The 320K standard memory provides storage for 3555 data arrays. Each array consists of an

optional datalogger ID string (16 characters maximum), a timestamp consisting of the year, date

(Julian day or month/day format), time (hhmm or hours/minutes format) and seconds when the

reading was taken. Also included in the data is the internal 3V (or external 12V) battery voltage,

the datalogger temperature, the vibrating wire readings, the transducer temperature and the Array

number.

Internal math is calculated using 32 bit floating point notation (IEEE). Math operations on the

instrument readings, such as application of zero readings, gage factors (or calibration factors)

and offsets when using a linear conversion technique or polynomial coefficients when using the

polynomial conversion, provide outputs directly in engineering units. The dataloggers internal

configuration is defined through communication with a computer using the supplied RS-232 or

USB (or optional RS-485) interface cable. The datalogger is configured and monitored using

LogView, a Geokon proprietary Graphic User Interface (GUI) software application (See Section

2.3).The datalogger can also be configured and monitored via text-based commands with any

standard terminal emulator software, such as Microsoft Windows HyperTerminal™(see Section

3, Command Set ).

The following three communications options are available for the LC-2x16:

LC-2x16 Model # Communication

8002-16-1 RS-232

8002-16-2 USB

8002-16-3 RS-485

8002-16-1: Communication with the LC-2x16 is implemented via the host computer’s RS-

232 COM port. See Section 2.3.6 for further information.

8002-16-2: Communication with the LC-2x16 is implemented via the host computer’s USB

2.0 port. When connected to a computer via the USB port, the LC-2x16 appears to

the computer as a “virtual” COM port. The LC-2x16 datalogger also receives all

of its operating power from the computer, thus extending the internal 3V (or

external 12V) battery life. When disconnected from the USB port, the datalogger

automatically switches to the internal 3V (or external 12V) battery pack. See

Section 2.3.7 for further information.

8002-16-3: Communication with the LC-2x16 is implemented via RS-485. This allows for

long communication cables (up to 4000’) between the host computer and the LC-

2x16. The ability to network two or more LC-2x16 dataloggers together is also

available with this communication option. See Section 2.3.8 and Appendix F,

Networking, for further information.

All data, both readings and configuration, are stored in nonvolatile EEPROM with a typical

storage life of 10 years (minimum). The internal temperature compensated real-time clock, used

to provide timekeeping and triggering of readings, is accurate to ± 2 minutes/year.

The comma delineated ASCII output format allows for easy importing into popular spreadsheet

programs such as Lotus 1-2-3or Microsoft Excel. See Appendix D for sample data files.

Figure 1 - LC-2x16 16-Channel VW Datalogger

2. GETTING STARTED

The following equipment will arrive with the Model LC-2x16 datalogger:

1. Set of (4) alkaline 'D' cell batteries.

2. Set of (4) desiccant packs packaged with the batteries.

3. Accessories:

8002-16-1: P/N S-8001-6 (DB-9F to 10-pin Bendix Male) RS-232 Communication

Cable

8002-16-2: P/N COM-109 (USB-A to 10-pin Bendix Male) USB Communication

Cable

8002-16-3: Communications Cable dependent on S-8001-5 (RS-232) or S-8002-5

(USB) RS-485 computer interface

4. Model LC-2x16 16 Channel Datalogger Instruction Manual.

If any of these items are missing or damaged contact the factory for replacements. The following

are optional accessories:

RS-485 interface cable.

S-8001-5 (RS-232) or S-8002-5 (USB) RS-485 computer interface.

Vibrating Wire Sensor with built-in thermistor (16 maximum).

This section will outline the basic steps needed to install the communications software, establish

communication with the Model LC-2x16 and configure the datalogger in the context of water

level monitoring using a Geokon model 4500S Vibrating Wire Pressure Transducer.

2.1 Transducer Installation

Open up the LC-2x16 by releasing the two latches on the top of the LC-2x16 enclosure. Install

each transducer to the LC-2x16 by threading the transducer’s cable through a bulkhead fitting on

the side of the LC-2x16 enclosure and wire the cable’s five conductors into the terminal strip per

Table 1. Tighten cable gland around cable.

Channel Number Terminal Strip

Designator

Terminal Strip

Position

Description Cable Wire Color

1 T1 1H Vibrating Wire + RED

1 T1 1L Vibrating Wire - BLACK

1 T1 2H Thermistor + GREEN

1 T1 2L Thermistor - WHITE

1 T1 S1 Analog Ground (shield) BARE WIRE

2 T2 3H Vibrating Wire + RED

2 T2 3L Vibrating Wire - BLACK

2 T2 4H Thermistor + GREEN

2 T2 4L Thermistor - WHITE

2 T2 S2 Analog Ground (shield) BARE WIRE

3 T3 5H Vibrating Wire + RED

3 T3 5L Vibrating Wire - BLACK

3 T3 6H Thermistor + GREEN

3 T3 6L Thermistor - WHITE

3 T3 S3 Analog Ground (shield) BARE WIRE

4 T4 7H Vibrating Wire + RED

4 T4 7L Vibrating Wire - BLACK

4 T4 8H Thermistor + GREEN

4 T4 8L Thermistor - WHITE

4 T4 S4 Analog Ground (shield) BARE WIRE

5 T5 9H Vibrating Wire + RED

5 T5 9L Vibrating Wire - BLACK

5 T5 10H Thermistor + GREEN

5 T5 10L Thermistor - WHITE

5 T5 S5 Analog Ground (shield) BARE WIRE

6 T6 11H Vibrating Wire + RED

6 T6 11L Vibrating Wire - BLACK

6 T6 12H Thermistor + GREEN

6 T6 12L Thermistor - WHITE

6 T6 S6 Analog Ground (shield) BARE WIRE

7 T7 13H Vibrating Wire + RED

7 T7 13L Vibrating Wire - BLACK

7 T7 14H Thermistor + GREEN

7 T7 14L Thermistor - WHITE

7 T7 S7 Analog Ground (shield) BARE WIRE

8 T8 15H Vibrating Wire + RED

8 T8 15L Vibrating Wire - BLACK

8 T8 16H Thermistor + GREEN

8 T8 16L Thermistor - WHITE

8 T8 S8 Analog Ground (shield) BARE WIRE

9 T9 17H Vibrating Wire + RED

9 T9 17L Vibrating Wire - BLACK

9 T9 18H Thermistor + GREEN

9 T9 18L Thermistor - WHITE

9 T9 S9 Analog Ground (shield) BARE WIRE

10 T10 19H Vibrating Wire + RED

10 T10 19L Vibrating Wire - BLACK

10 T10 20H Thermistor + GREEN

10 T10 20L Thermistor - WHITE

10 T10 S10 Analog Ground (shield) BARE WIRE

11 T11 21H Vibrating Wire + RED

11 T11 21L Vibrating Wire - BLACK

11 T11 22H Thermistor + GREEN

11 T11 22L Thermistor - WHITE

11 T11 S11 Analog Ground (shield) BARE WIRE

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