Campbell MetSENS Series Manual de usuario

Revision: 05/2023

Campbell Scientific, Inc.

Table of contents

1. Introduction 1

2. Precautions 1

3. Initial inspection 1

4. QuickStart 2

5. Specifications 5

5.1 Air temperature measurement 8

5.2 Relative humidity measurements 8

5.3 Barometric pressure measurements 8

5.4 Wind speed measurements 9

5.5 Wind direction measurements 9

5.6 Precipitation input 9

5.7 Precipitation measurements 9

5.8 Compass 9

6. Installation 10

6.1 Wiring 10

6.1.1 RS-485 wiring 10

6.1.2 SDI-12 wiring 10

6.1.3 RS-232 wiring 11

6.2 Programming 11

6.2.1 Modbus programming 12

6.2.2 SDI-12 programming 13

6.2.3 RS-232 programming 13

6.3 Siting considerations for wind measurements 14

6.4 Mounting 14

7. Operation 15

7.1 Modbus measurements 15

7.2 SDI-12 measurements 18

7.3 RS-232 default settings 20

7.4 Sensor status code 23

Table of Contents - i

Appendix A. Importing Short Cut code into CRBasic Editor 24

Appendix B. SDI-12 sensor support 25

B.1 SDI-12 command basics 25

B.1.1 Acknowledge active command (a!) 26

B.1.2 Send identification command (al!) 26

B.1.3 Start verification command (aV!) 27

B.1.4 Address query command (?!) 27

B.1.5 Change address command (aAb!) 27

B.1.6 Start measurement commands (aM!) 28

B.1.7 Start measurement commands with cyclic redundancy check (aMC! and aCC!) 28

B.1.8 Stopping a measurement command 29

B.1.9 Send data command (aD0! … aD9!) 29

B.2 SDI-12 transparent mode 29

B.2.1 Changing an SDI-12 address 30

Table of Contents - ii

1. Introduction

The MetSENS-series compact weather sensors monitor different combinations of common

meteorological parameters to international standards—all in a single, integrated instrument. A

variety of output options ensure plug and play operability in a wide variety of applications.

2. Precautions

lREAD AND UNDERSTAND the Safety section at the back of this manual.

lCare should be taken when opening the shipping package to not damage or cut the cable

jacket. If damage to the cable is suspected, consult with a Campbell Scientific support and

implementation engineer.

lOpening the unit or breaking the security seal will void the warranty and the calibration.

lThe sensor is a precision instrument. Please handle it with care.

lWhen installing the unit, handle with lint free gloves and degrease the unit to reduce the

build-up of deposits.

3. Initial inspection

Upon receipt of the MetSENS-series sensor, inspect the packaging and contents for damage. File

damage claims with the shipping company.

Each MetSENS-series sensor is shipped pre-configured, with a test report and cable.

Configuration and cable type depends on the communication mode chosen: SDI-12, Modbus RS-

485, or RS-232. The cable length can be 5m (17ft), 15m (50ft), 46m (150ft), or user specified.

Replacement cables are as follows:

lMETSENSCBL1 SDI-12 Replacement Cable

lMETSENSCBL2 RS-485 Replacement Cable

lMETSENSCBL3 RS-232 Replacement Cable

MetSENS-Series Compact Weather Sensors 1

4. QuickStart

A video that describes data logger programming using Short Cut is available at:

www.campbellsci.com/videos/cr1000x-data logger-getting-started-program-part-3 .Short

Cut is an easy way to program your data logger to measure the sensor and assign data logger

wiring terminals. Short Cut is available as a download on www.campbellsci.com . It is included

in installations of LoggerNet,RTDAQ, and PC400.

The following procedure also shows using Short Cut to program the sensor.

1. Open Short Cut and click Create New Program.

2. Double-click the data logger model.

3. In the Available Sensors and Devices box, type MetSENS or locate the sensor in the Sensors

>Meteorological >Basic Weather >MetSENS folder. Double-click the appropriate sensor

model and output. Type the correct SDI-12 Address (default is zero) or Modbus Address

(default is 41). If measuring barometric pressure, type the elevation of the site in the same

units as the Site elevation units. Default units are meters, which can be changed by clicking

on the Site elevation units box and selecting Feet.

MetSENS-Series Compact Weather Sensors 2

4. Click the Wiring tab to see how the sensor is to be wired to the data logger. Click OK after

wiring the sensor.

5. Repeat steps three and four for other sensors.

6. In Output Setup, type the scan rate, meaningful table names, and Data Output Storage

Interval.

MetSENS-Series Compact Weather Sensors 3

7. Select the measurement and its associated output option.

8. Click Finish and save the program. Send the program to the data logger if the data logger

is connected to the computer.

9. If the sensor is connected to the data logger, check the output of the sensor in the data

display in LoggerNet,RTDAQ, or PC400 to make sure it is making reasonable

measurements.

MetSENS-Series Compact Weather Sensors 4

5. Specifications

Sampling rate: 1 Hz

Digital communication modes: Serial RS-232, RS-485, SDI-12, NMEA, Modbus, ASCII

Default configuration

RS-485: 19200 baud rate, 8 data bits, even parity, one stop bit;

default Modbus address is 41

SDI-12: Default SDI-12 address is 0

RS-232: 9600 baud rate, 8 data bits, even parity, one stop bit

IP rating: 66

Operating temperature range: –40 to 70 °C

Operating voltage: 5 to 30 VDC

Typical current drain @ 12 VDC: 25 mA continuous high mode,

0.7 mA eco-power mode (1 hour polled)

Compliance: CE and RoHS compliant.

Where applicable, all individual parameters meet or

exceed specifications of IEC 61724-1 (2017, 2021).

Compliance documents available at:

www.campbellsci.com/metsens200

www.campbellsci.com/metsens300

www.campbellsci.com/metsens500

www.campbellsci.com/metsens550

www.campbellsci.com/metsens600

MetSENS-Series Compact Weather Sensors 5

Table 5-1: Measurements, weight, and dimensions

Model Measurements Weight Dimensions

MetSENS200

Wind speed

Wind direction

Compass

0.5 kg (1.1 lb)

MetSENS300

Air temperature

Relative humidity

Barometric pressure

0.5 kg (1.1 lb)

155mm

7.5mm

Ø38.5mm

Ø44.5mm

142mm

MetSENS-Series Compact Weather Sensors 6

Table 5-1: Measurements, weight, and dimensions

Model Measurements Weight Dimensions

MetSENS500

Air temperature

Relative humidity

Barometric pressure

Wind speed

Wind direction

Compass

0.7 kg (1.5 lb)

222mm

38.5mm

44.5mm

7.5mm

142mm

MetSENS550

Air temperature

Relative humidity

Barometric pressure

Wind speed

Wind direction

Compass

Connector for the

TE525METS or other rain

gage

0.7 kg (1.5 lb)

222mm

38.5mm

44.5mm

7.5mm

142mm

MetSENS-Series Compact Weather Sensors 7

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