Campbell Scientific CR300 Owner's manual

Brand: Campbell Scientific

Model: CR300

Category: Measuring, testing & control

Type: Owner's manual

OPERATOR’S MANUAL

CR300 Datalogger

3/16

Campbell Scientific, Inc.

Limited Warranty

The CR300 Datalogger is warranted for three (3) years subject to this limited

warranty:

“Products manufactured by CSI are warranted by CSI to be free from defects in

materials and workmanship under normal use and service for twelve months

from the date of shipment unless otherwise specified in the corresponding

product manual. (Product manuals are available for review online at

www.campbellsci.com.) Products not manufactured by CSI, but that are resold

by CSI, are warranted only to the limits extended by the original manufacturer.

Batteries, fine-wire thermocouples, desiccant, and other consumables have no

warranty. CSI’s obligation under this warranty is limited to repairing or

replacing (at CSI’s option) defective Products, which shall be the sole and

exclusive remedy under this warranty. The Customer assumes all costs of

removing, reinstalling, and shipping defective Products to CSI. CSI will return

such Products by surface carrier prepaid within the continental United States of

America. To all other locations, CSI will return such Products best way CIP

(port of entry) per Incoterms ® 2010. This warranty shall not apply to any

Products which have been subjected to modification, misuse, neglect, improper

service, accidents of nature, or shipping damage. This warranty is in lieu of all

other warranties, expressed or implied. The warranty for installation services

performed by CSI such as programming to customer specifications, electrical

connections to Products manufactured by CSI, and Product specific training, is

part of CSI's product warranty. CSI EXPRESSLY DISCLAIMS AND

EXCLUDES ANY IMPLIED WARRANTIES OF MERCHANTABILITY

OR FITNESS FOR A PARTICULAR PURPOSE. CSI hereby disclaims,

to the fullest extent allowed by applicable law, any and all warranties and

conditions with respect to the Products, whether express, implied or

statutory, other than those expressly provided herein.”

Assistance

Products may not be returned without prior authorization. The following

contact information is for US and international customers residing in countries

served by Campbell Scientific, Inc. directly. Affiliate companies handle repairs

for customers within their territories. Please visit www.campbellsci.com to

determine which Campbell Scientific company serves your country.

To obtain a Returned Materials Authorization (RMA), contact CAMPBELL

SCIENTIFIC, INC., phone (435) 227-9000. After an application engineer

determines the nature of the problem, an RMA number will be issued. Please

write this number clearly on the outside of the shipping container. Campbell

Scientific’s shipping address is:

CAMPBELL SCIENTIFIC, INC.

RMA#_____

815 West 1800 North

Logan, Utah 84321-1784

For all returns, the customer must fill out a “Statement of Product Cleanliness

and Decontamination” form and comply with the requirements specified in it.

The form is available from our website at www.campbellsci.com/repair. A

completed form must be either emailed to repair@campbellsci.com or faxed to

(435) 227-9106. Campbell Scientific is unable to process any returns until we

receive this form. If the form is not received within three days of product

receipt or is incomplete, the product will be returned to the customer at the

customer’s expense. Campbell Scientific reserves the right to refuse service on

products that were exposed to contaminants that may cause health or safety

concerns for our employees.

Safety

DANGER — MANY HAZARDS ARE ASSOCIATED WITH INSTALLING, USING, MAINTAINING, AND WORKING ON OR AROUND

TRIPODS, TOWERS, AND ANY ATTACHMENTS TO TRIPODS AND TOWERS SUCH AS SENSORS, CROSSARMS, ENCLOSURES,

ANTENNAS, ETC. FAILURE TO PROPERLY AND COMPLETELY ASSEMBLE, INSTALL, OPERATE, USE, AND MAINTAIN TRIPODS,

TOWERS, AND ATTACHMENTS, AND FAILURE TO HEED WARNINGS, INCREASES THE RISK OF DEATH, ACCIDENT, SERIOUS

INJURY, PROPERTY DAMAGE, AND PRODUCT FAILURE. TAKE ALL REASONABLE PRECAUTIONS TO AVOID THESE HAZARDS.

CHECK WITH YOUR ORGANIZATION'S SAFETY COORDINATOR (OR POLICY) FOR PROCEDURES AND REQUIRED PROTECTIVE

EQUIPMENT PRIOR TO PERFORMING ANY WORK.

Use tripods, towers, and attachments to tripods and towers only for purposes for which they are designed. Do not exceed design limits.

Be familiar and comply with all instructions provided in product manuals. Manuals are available at www.campbellsci.com or by

telephoning (435) 227-9000 (USA). You are responsible for conformance with governing codes and regulations, including safety

regulations, and the integrity and location of structures or land to which towers, tripods, and any attachments are attached. Installation

sites should be evaluated and approved by a qualified engineer. If questions or concerns arise regarding installation, use, or

maintenance of tripods, towers, attachments, or electrical connections, consult with a licensed and qualified engineer or electrician.

General

• Prior to performing site or installation work, obtain required approvals and permits. Comply

with all governing structure-height regulations, such as those of the FAA in the USA.

• Use only qualified personnel for installation, use, and maintenance of tripods and towers, and

any attachments to tripods and towers. The use of licensed and qualified contractors is highly

recommended.

• Read all applicable instructions carefully and understand procedures thoroughly before

beginning work.

• Wear a hardhat and eye protection, and take other appropriate safety precautions while

working on or around tripods and towers.

• Do not climb tripods or towers at any time, and prohibit climbing by other persons. Take

reasonable precautions to secure tripod and tower sites from trespassers.

• Use only manufacturer recommended parts, materials, and tools.

Utility and Electrical

• You can be killed or sustain serious bodily injury if the tripod, tower, or attachments you are

installing, constructing, using, or maintaining, or a tool, stake, or anchor, come in contact with

overhead or underground utility lines.

• Maintain a distance of at least one-and-one-half times structure height, 20 feet, or the distance

required by applicable law, whichever is greater, between overhead utility lines and the

structure (tripod, tower, attachments, or tools).

• Prior to performing site or installation work, inform all utility companies and have all

underground utilities marked.

• Comply with all electrical codes. Electrical equipment and related grounding devices should be

installed by a licensed and qualified electrician.

Elevated Work and Weather

• Exercise extreme caution when performing elevated work.

• Use appropriate equipment and safety practices.

• During installation and maintenance, keep tower and tripod sites clear of un-trained or non-

essential personnel. Take precautions to prevent elevated tools and objects from dropping.

• Do not perform any work in inclement weather, including wind, rain, snow, lightning, etc.

Maintenance

• Periodically (at least yearly) check for wear and damage, including corrosion, stress cracks,

frayed cables, loose cable clamps, cable tightness, etc. and take necessary corrective actions.

• Periodically (at least yearly) check electrical ground connections.

WHILE EVERY ATTEMPT IS MADE TO EMBODY THE HIGHEST DEGREE OF SAFETY IN ALL CAMPBELL SCIENTIFIC PRODUCTS,

THE CUSTOMER ASSUMES ALL RISK FROM ANY INJURY RESULTING FROM IMPROPER INSTALLATION, USE, OR

MAINTENANCE OF TRIPODS, TOWERS, OR ATTACHMENTS TO TRIPODS AND TOWERS SUCH AS SENSORS, CROSSARMS,

ENCLOSURES, ANTENNAS, ETC.

Table of Contents

PDF viewers: These page numbers refer to the printed version of this document. Use the

PDF reader bookmarks tab for links to specific sections.

1. Introduction ................................................................ 1

2. Precautions ................................................................ 1

3. Initial Inspection ......................................................... 1

4. QuickStart ................................................................... 2

4.1 Configure Software .............................................................................. 2

4.2 Connect to the CR300 .......................................................................... 8

4.3 Create a Program .................................................................................. 9

4.4 Wire Sensors and Devices .................................................................. 13

4.5 Send a Program .................................................................................. 14

4.6 Collect Data ....................................................................................... 16

4.7 View Data .......................................................................................... 17

4.8 Install the CR300 ............................................................................... 17

4.9 Apply Power ...................................................................................... 18

4.10 Connect to Earth Ground ................................................................... 18

5. Overview ................................................................... 19

5.1 Wiring Panel Overview ...................................................................... 19

5.2 Configuring the CR300 ...................................................................... 20

5.2.1 Device Configuration Utility ...................................................... 20

5.2.2 Network Planner ......................................................................... 20

5.3 Configuring Datalogger Support Software ........................................ 21

5.4 Writing a Program .............................................................................. 21

5.4.1 Comments ................................................................................... 23

5.4.2 Variables ..................................................................................... 24

5.4.2.1 Declaring Data Types ....................................................... 24

5.4.2.2 Declaring Arrays .............................................................. 26

5.4.2.3 Conserving Program Memory .......................................... 27

5.4.3 Constants ..................................................................................... 27

5.4.4 Data Tables ................................................................................. 28

5.4.4.1 Data Output Processing Instructions ................................ 29

5.4.5 BeginProg / EndProg .................................................................. 32

5.4.6 Scan() / NextScan ....................................................................... 32

5.4.7 Programming Instructions ........................................................... 33

5.4.7.1 Argument Types ............................................................... 33

5.4.8 Expressions ................................................................................. 34

5.4.8.1 Expressions in Arguments ................................................ 34

5.5 Sending a Program ............................................................................. 35

5.6 Monitoring Data ................................................................................. 35

5.7 Collecting Data .................................................................................. 35

5.8 Viewing Data ..................................................................................... 36

6. Details ....................................................................... 39

Table of Contents

6.1

Analog Measurements ....................................................................... 39

6.1.1 Voltage Measurements – Details ................................................ 39

6.1.1.1 Single-Ended Measurements ........................................... 39

6.1.1.2 Differential Measurements .............................................. 39

6.1.1.3 Voltage Ranges ................................................................ 40

6.1.1.4 Settling Time ................................................................... 40

6.1.1.5 Reverse Differential ......................................................... 40

6.1.1.6 First Notch Frequency ..................................................... 40

6.1.2 Resistance Measurements – Details ........................................... 40

6.1.2.1 Voltage Excitation ........................................................... 43

6.1.2.2 Ratiometric Accuracy ...................................................... 43

6.1.3 Current Measurements – Details ................................................ 43

6.1.3.1 Voltage Ranges for Current Measurements ..................... 43

6.1.3.2 4-20 mA Measurements ................................................... 44

6.2 Pulse Measurements – Details ........................................................... 45

6.3 Period Averaging – Details ............................................................... 46

6.4 Digital Input/Ouput – Details ............................................................ 46

6.5 Communication – Details .................................................................. 47

6.5.1 Communication Ports ................................................................. 47

6.5.1.1 USB Port .......................................................................... 47

6.5.1.2 RS-232 Port ..................................................................... 47

6.5.1.3 SDI-12 Ports .................................................................... 47

6.5.2 General Serial Communications ................................................. 47

6.5.3 SDI-12 Communications ............................................................ 48

6.5.4 Modbus Communications .......................................................... 48

6.5.5 DNP3 Communications ............................................................. 48

6.5.6 PakBus Communications ........................................................... 49

6.5.6.1 Nodes: Leaf Nodes and Routers ...................................... 49

6.5.6.2 Linking PakBus Nodes: Neighbor Discovery .................. 50

6.5.6.2.1 Hello-Message ...................................................... 50

6.5.6.2.2 Beacon .................................................................. 50

6.5.6.2.3 Hello-Request ....................................................... 50

6.5.6.2.4 Neighbor Lists ...................................................... 51

6.5.6.2.5 Adjusting Links .................................................... 51

6.5.6.2.6 Maintaining Links ................................................. 51

6.5.7 Internet Communications ........................................................... 51

6.6 Grounding – Details .......................................................................... 52

6.6.1 Lightning Protection ................................................................... 52

6.7 Power................................................................................................. 53

6.7.1 Power In ..................................................................................... 53

6.7.1.1 Power Sources ................................................................. 53

6.7.1.2 Power LED Indicator ....................................................... 54

6.7.1.3 Calculating Power Consumption ..................................... 54

6.7.2 Power Out .................................................................................. 54

6.8 Memory ............................................................................................. 55

6.8.1 Data Storage ............................................................................... 55

6.8.2 CPU Drive .................................................................................. 56

6.9 Time Keeping .................................................................................... 56

7. Specifications ........................................................... 56

7.1 Voltage Measurements – Specifications............................................ 56

7.2 Resistance Measurements – Specifications ....................................... 58

7.3 Voltage Excitation – Specifications .................................................. 58

7.4 Current Measurements – Specifications ............................................ 59

7.5 Pulse Measurements – Specifications ............................................... 59

Table of Contents

iii

7.5.1

Switch-Closure Input .................................................................. 59

7.5.2 High-Frequency Input ................................................................. 59

7.5.3 Low-Level AC Input ................................................................... 60

7.6 Period Averaging – Specifications ..................................................... 60

7.7 Digital Input/Output – Specifications ................................................ 60

7.8 Switched Voltage Output – Specifications ......................................... 61

7.9 Communication – Specifications ....................................................... 61

7.10 System – Specifications ..................................................................... 62

7.11 Power Requirements – Specifications ................................................ 62

7.12 Compliance – Specifications .............................................................. 63

7.13 Physical – Specifications ................................................................... 63

8. Maintenance ............................................................. 63

8.1 Sending an Operating System ............................................................ 63

8.2 Internal Lithium Battery ..................................................................... 64

9. Troubleshooting ....................................................... 64

9.1 Station Status Summary ..................................................................... 64

9.2 Basic Troubleshooting Procedure ...................................................... 66

9.3 NAN and ±INF .................................................................................. 67

10. Glossary ................................................................... 67

Appendix

A. Importing Short Cut Code Into CRBasic Editor ... A-1

Figures

4-1. Opening a Terminal ........................................................................... 13

4-2. Mounting to a Backplate .................................................................... 18

5-1. CR300 Wiring Panel .......................................................................... 19

6-1. CR300 Current Measurement ............................................................ 43

6-2. Pulse Signal Types ............................................................................. 46

6-3. PakBus Network Addressing ............................................................. 50

6-4. Lightning-Protection Scheme............................................................. 53

9-1. Station Status Window ....................................................................... 65

Tables

5-1. CR300 Wiring Panel Terminal Definitions ........................................ 19

5-2. CRBasic Program Structure ............................................................... 22

5-3. Data Types in Variable Memory ........................................................ 25

5-4. Data Types in Final-Data Memory .................................................... 30

5-5. Typical Data Table ............................................................................. 36

5-6. TOA5 Environment Line ................................................................... 37

5-7. Data Process Abbreviations ............................................................... 38

6-1. Resistive-Bridge Circuits with Voltage Excitation ............................ 41

6-2. Pulse Measurement Input Types, Terminals, and Data Options ....... 46

6-3. Power LED Activity........................................................................... 54

6-4. CR300 Memory Allocation ................................................................ 55

7-1. Analog Voltage Measurement Range and Resolution........................ 57

7-2. Analog Voltage Measurement Accuracy Offsets ............................... 57

Table of Contents

7-3. Analog Voltage Measurement Speed ................................................ 58

7-4. Analog Voltage Measurement Input Resistance and Current ............ 58

7-5. Low-Level AC Ranges ...................................................................... 60

7-6. Digital I/O Voltage Levels ................................................................ 61

7-7. SW12V Thermal Fuse Hold Current ................................................. 61

9-1. Troubleshooting with Station Status ................................................. 65

CRBasic Examples

5-1. CRBasic Program Structure .............................................................. 23

5-2. Inserting Comments .......................................................................... 24

5-3. Variable Data Type Declarations ...................................................... 26

5-4. Using a Variable Array in Calculations ............................................. 27

5-5. Definition and Use of a Data Table ................................................... 28

5-6. Use of the Disable Variable ............................................................... 32

5-7. Measurement Instruction Syntax ....................................................... 33

CR300 Datalogger

1. Introduction

The CR300 is a multi-purpose, compact, low-cost measurement and control

datalogger. This entry level datalogger, with its rich instruction set, can

measure most hydrological, meteorological, environmental and industrial

sensors. It can concentrate data, making it available over varied networks, and

deliver it using your preferred protocol. The CR300 also performs automated

on-site or remote decision making for control and M2M communications. This

manual provides a detailed look at the CR300 measurement and control

datalogger and discusses the steps necessary to begin using it in your

application.

2. Precautions

READ AND UNDERSTAND the Safety section at the front of this manual.

DANGER: Fire, explosion, and severe-burn hazard. Misuse or improper

installation of the internal lithium battery can cause severe injury. Do not

recharge, disassemble, heat above 100 °C (212 °F), solder directly to the cell,

incinerate, or expose contents to water. Dispose of spent lithium batteries

properly.

WARNING:

• Protect from over-voltage

• Protect from water

• Protect from ESD (electrostatic discharge)

CAUTION: Disuse accelerates depletion of the internal battery, which

maintains the clock. The internal battery will be depleted in six years or less if

a CR300 remains unpowered. When the CR300 is continuously used, the

internal battery may last up to 10 or more years. See Section 8.2, Internal

Lithium Battery

(p. 64), for more information.

IMPORTANT: Maintain a level of calibration appropriate to the application.

Campbell Scientific recommends factory recalibration of the CR300 every

three years.

3. Initial Inspection

The CR300 ships with the following items:

• Calibration Certificate

• USB cable to connect the CR300 to a PC

• Preloaded datalogger program that measures power-supply voltage and

processing-board temperature.

• Screwdriver for connecting wires to terminals

• 3 Nylon Anchors with 3 Screws to mount the CR300 in an enclosure

CR300 Datalogger

Upon receipt of the CR300, inspect the packaging and contents for damage.

File damage claims with the shipping company.

Immediately check package contents. Thoroughly check all packaging material

for product that may be concealed. Check model numbers, part numbers, and

product descriptions against the shipping documents. Model or part numbers

are found on each product. On cabled items, the number is often found at the

end of the cable that connects to the measurement device. The Campbell

Scientific number may differ from the part or model number printed on the

sensor by the sensor vendor. Ensure that the expected lengths of cables were

received. Contact Campbell Scientific immediately if there are any

discrepancies.

Check the operating system version in the CR300 as outlined in Section 8.1,

Sending an Operating System

(p. 63), and update as needed.

4. QuickStart

This section guides discusses the basic steps of setting up a CR300 and

datalogger support software

(p. 68).

4.1 Configure Software

Watch the video for Sections 4.1 – 4.2 at www.campbellsci.com/videos?video=88.

TUTORIAL

Follow these steps for a tutorial on basic CR300 procedures. Following these

steps, you will:

 Set up datalogger support software to communicate to a CR300 over a

simple USB connection.

 Monitor live data.

 Create a program for the CR300 to measure the voltage of its power

supply, its internal temperature, and a thermocouple. It will measure

every second and record an average of each measurement every minute.

 Connect a thermocouple to a CR300 to make air temperature

measurements.

 Send a program to a CR300.

 Collect and view recorded data.

CR300 Datalogger

When LoggerNet is first run, the

EZSetup Wizard will run

automatically in a new window. If

this is not the first time the software

has been run, open the EZSetup

Wizard. Do this by navigating to

LoggerNet Setup, selecting View |

EZ (Simplified), and clicking the

Add button.

Click Next.

Select the CR300 Series in the

Datalogger Type and Name list.

Give the CR300 a name, such as a

site or project name, to identify it

within your software.

Click Next.

Select the connection type.

Click Next.

If this is the first time connecting

your PC to a CR300, click Install

USB Driver

…

to install the USB

driver.

Select Direct Connect.

CR300 Datalogger

After the driver has been installed, connect the CR300 USB port to the PC with the included USB cable (pn

27555). The connection supplies 5 V power over USB as well as a communication link.

NOTE The Power LED indicates the program and power state of the CR300. Because the

CR300 ships with a program set to run on power-up, the Power LED will quickly flash

3 times every 10 seconds when powered over USB. See

TABLE 6-3, Power LED

Activity

(p. 54)

, for other flash patterns.

With the CR300 connected to the

PC, a port titled CR300 will appear

in the COM Port list. Select the

CR300 COM Port. The number of

your COM port may differ.

Click Next.

Enter the Baud Rate and PakBus

Address. These must match the

hardware settings of your CR300.

The default baud rate of a CR300

datalogger is 115200, and the

default PakBus Address is 1.

Click Next.

Select the COM Port labeled CR300. Keep all other defaults.

Keep all default Datalogger Settings.

CR300 Datalogger

The CR300 does not use a security

code or a PakBus encryption key by

default, so the Security Code can be

set to 0 and the PakBus Encryption

Key can be left blank. If either

setting has been changed, enter the

new code or key. Security can be set

through Device Configuration

Utility, Connect Screen Settings

Editor, or the SetSecurity()

CRBasic instruction.

Click Next.

Review the software settings in the

Setup Summary.

Click Next.

With the USB cable connected, test

the communication settings by

selecting Yes. Click Next to initiate

the test. To troubleshoot an

unsuccessful test, see Section

Troubleshooting

(p. 64). Click Next

again after a successful test.

CR300 Datalogger

The Datalogger Clock window

shows the current time for both the

CR300 and the PC. Set the

datalogger clock to the Adjusted

Server Date/Time by clicking Set

Datalogger Clock. Apply time

offsets in Time Zone Offset.

Click Next.

The CR300 ships with a default

program called QuickStart.CR300.

If your CR300 is running another

program, the program name will

show in the Current Program

field.

Click Next.

The Data Files window shows the

data tables available on the CR300

and allows you to select which data

tables to collect. To include a table

in data collection (Section 4.6,

Collect Data

(p. 16)), highlight the

table name in the Tables list and

check the Table Collected During

Data Collection box. Select a Data

File Option suitable for your

application. Make note of the

Output File Name. Change this

name by clicking .

If the current program is not QuickStart.CR300, visit www.campbellsci.com/start/cr300, where the program can be

downloaded.

Click Select and Send Program… Select the downloaded program QuickStart.CR300, and click Open. A status bar

will appear while the program is sent to the CR300, followed by a confirmation that the transfer was successful.

Click OK to close the confirmation.

CR300 Datalogger

Click Next.

In the Scheduled Collection

window, check Scheduled

Collection Enabled to have

LoggerNet collect data from the

datalogger according to a schedule.

Set the Base Date and Time at

which you would like to begin

scheduled collections. Enter the

Collection Interval.

Click Next.

Click Finish to complete the wizard

and go to the Setup Screen. A

summary of the settings entered is

shown.

Keep all default settings.

We are not going to do scheduled collections in this tutorial. Click Schedule Help to learn more about this option

or watch the video at www.campbellsci.com/videos?video=50.

CR300 Datalogger

4.2 Connect to the CR300

Open LoggerNet Connect. From the

LoggerNet toolbar, click Main |

Connect.

In the Stations list, select the newly

added CR300.

Press Connect.

In the Table Monitor, select a data

table in the drop-down box. The

table is now displayed. Each table

will update as described in Section

5.6, Monitoring Data

(p. 35).

Click Disconnect to end the session.

View the Public table by selecting the Public table in the Table Monitor drop-down box.

CR300 Datalogger

4.3 Create a Program

Short Cut is an easy way to program your CR300 datalogger to measure

sensors. Short Cut is included in installations of LoggerNet. It is also available

as a download on www.campbellsci.com and the ResourceDVD.

This section will guide you through programming a CR300 Series datalogger

to measure the voltage of the CR300 power supply, the internal temperature of

the CR300, and ambient air temperature using a thermocouple. With minor

changes, these steps can apply to other measurements.

Watch the video for Sections 4.3 – 4.4 at www.campbellsci.com/videos?video=89.

Open Short Cut. From the

LoggerNet toolbar, click Program |

Short Cut.

Select New Program.

Select the CR300 Series in the

Datalogger Model drop-down list.

In the Scan Interval box, enter how

frequently the CR300 should make

measurements.

Click Next.

Enter 1 in the Scan Interval box and select Seconds in the drop-down list box.

CR300 Datalogger

NOTE The first time Short Cut is run, a prompt will appear asking for a choice of first notch

frequency. Select 60 Hz Noise Rejection for the United States and areas using 60 Hz

AC voltage. Select 50 Hz Noise Rejection for most of Europe and areas that operate at

50 Hz.

A second prompt lists sensor support options. Campbell Scientific, Inc. (US) is

probably the best fit if you are outside Europe.

To change the first notch frequency or sensor support option for future programs, use

the Program drop-down menu.

The next window displays

Available Sensors and Devices.

Expand a folder by clicking on the

symbol. Note that the datalogger

battery voltage and internal

temperature (BattV and PTemp_C

in the Selected panel) are selected

by default. Double-click on a sensor

or measurement in the Available

Sensors and Devices list to add it to

the Selected panel.

For most sensors and measurements,

a dialog window is then presented

with several fields and options.

Click Help to learn more about any

field or option.

In the Sensors | Temperature subfolder, double-click Type T (copper-constantan) Thermocouple.

Page is loading ...

Campbell Scientific CR300 Owner's manual

Brand: Campbell Scientific

Model: CR300

Category: Measuring, testing & control

Type: Owner's manual

Download PDF

report

Campbell Scientific CR300 Owner's manual

Campbell Scientific CR300 Owner's manual

Related papers

Other documents