SMC Networks SMC-520 User manual

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SMC-520 User Guide revision 1.3 SMC Ship Motion Control www.shipmotion.eu
SMC-520
TEMPERATURE & HUMIDITY SENSOR
USER GUIDE

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SMC-520 User Guide revision 1.3 SMC Ship Motion Control www.shipmotion.eu
Notice
The information in this User Guide is subject to change without notice.
Not all the features described in this manual are available in all hardware and firmware versions.
Please check with SMC for details of model specific features such as measurement parameters and
Protocol support.
This document is property of SMC and shall not be reproduced in any form without written approval
from SMC.
SMC Ship Motion Control is not responsible for any errors in this manual or their consequences.
All rights reserved.
SMC Ship Motion Control Ltd
Email: [e-mail]
Web: www.shipmotion.eu
Tel: [phone]

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SMC-520 User Guide revision 1.3 SMC Ship Motion Control www.shipmotion.eu
TABLE OF CONTENTS
1INTRODUCTION.................................................................................................................... 4
1.1 RECEIVING THE TEMPERATURE AND HUMIDITY SENSOR....................................................................... 4
1.2 SMC-520 DIMENSIONS ................................................................................................................ 5
1.3 INSTALLATION.............................................................................................................................. 6
1.3.1 INSTALLATION LOCATION RECOMMENDATIONS.......................................................................... 6
1.4 MOUNTING INSTRUCTIONS USING SOLAR RADIATION SHIELD .............................................................. 7
1.5 ELECTRICAL COMMUNICATION ....................................................................................................... 9
1.6 SMCINSTRUMENTS CONFIGURATION SOFTWARE ........................................................................... 10
1.6.1 DEFAULT SETTINGS AT THE FACTORY...................................................................................... 10
1.6.2 GENERAL INFORMATION CONFIGURATION SOFTWARE.............................................................. 11
2SERIAL OUTPUT STRINGS.................................................................................................... 13
2.1.1 WIXDR............................................................................................................................ 13
2.1.2 VAISALA HMP155 FORMAT ................................................................................................ 13
3CONFIGURATION COMMANDS ........................................................................................... 14
3.1 REPLIES FROM THE SMC-520...................................................................................................... 14
4MAINTENANCE................................................................................................................... 15
5SERVICE AND WARRANTY................................................................................................... 15
5.1.1 LIABILITY........................................................................................................................... 16
5.1.2 RESTRICTION OF WARRANTY ................................................................................................ 17
5.2 TECHNICAL SUPPORT .................................................................................................................. 17
6TECHNICAL SPECIFICATIONS SMC-520 ................................................................................. 18
7FAQ AND SUPPORT............................................................................................................. 19

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SMC-520 User Guide revision 1.3 SMC Ship Motion Control www.shipmotion.eu
1INTRODUCTION
The SMC-520 Temperature and Humidity sensor is an accurate, reliable and cost effective way to
measure the air temperature and humidity for many applications.
The data transmitted from the SMC Temperature and Humidity sensor is in a standard NMEA
sentence format over RS232 and RS485 that can be used by many systems as well as SMCs
Monitoring System applications for graphical presentation and data logging, listed below.
•SMChms, Helideck Monitoring System
•SMCems, Environmental Monitoring System
•SMCwms, Weather Monitoring System
The SMC-520 is produced to be used in outdoor applications. The optional SMC-560 Solar radiation
shield provides accurate temperature readings also in sunny environments. The SMC-520 uses a
PT1000 element for the temperature measurements.
1.1 RECEIVING THE TEMPERATURE AND HUMIDITY SENSOR
Unpack the equipment and remove all the packaging materials and shipping carton.
The SMC-520 sensor is delivered in a cardboard box designed to protect it from damage during
transit.
When the sensor has been received, it must be inspected for damage during shipment. If damage has
occurred during transit, all the shipping cartons and packaging materials should be stored for further
investigation. If damage is visible, a claim for shipping damage must be filed immediately.
Standard Delivered Items
•Temperature and Humidity Sensor
•Calibration Certificate
•SMC Instruments Configuration software and User Manual
•Cable with M12 connector, 3 m cable standard
Optional Items
•SMC-560 Solar Radiation Shield including Pole mounting brackets
•M12, 8 pin connector on a 5m cable
•M12, 8 pin connector on a 10m cable

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SMC-520 User Guide revision 1.3 SMC Ship Motion Control www.shipmotion.eu
1.2 SMC-520 DIMENSIONS
All dimensions are in mm

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SMC-520 User Guide revision 1.3 SMC Ship Motion Control www.shipmotion.eu
1.3 INSTALLATION
SMC highly recommend that the SMC-520 Temperature and Humidity sensor is deployed on site
inside a solar radiation shield such as the SMC-560 to achieve the optimum performance from the
sensor.
The sensor can also be installed without the shield inside a Stevenson screen.
It is not recommended to mount the sensor outside unshielded.
SMC-560 Solar Radiation Shield
1.3.1 INSTALLATION LOCATION RECOMMENDATIONS
Install the SMC-520 Temperature and Humidity sensor in an area with free air flow. Avoid positioning
the sensor in position that would not be representative of the area to be measured. Where possible
the sensor should be mounted away from heat sources, either direct such as exhausts or reflected
such as building walls. Placing the sensor to close to the ground may lead to inaccurate
measurements.

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SMC-520 User Guide revision 1.3 SMC Ship Motion Control www.shipmotion.eu
1.4 MOUNTING INSTRUCTIONS USING SOLAR RADIATION SHIELD
The SMC-560 Solar radiation shield is designed to be mounted on a pole of 30 to 60mm diameter.
After the shield has been attached to the pole, the Temperature and Humidity sensor is to be fitted
into the shield until the wider part of the sensor reach the compression fitting. Tighten the
compression fitting to hold the sensor in place. It is normally enough to tighten the fitting by hand.
After mounting in the shield connect the cable to the sensor.

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SMC-520 User Guide revision 1.3 SMC Ship Motion Control www.shipmotion.eu

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SMC-520 User Guide revision 1.3 SMC Ship Motion Control www.shipmotion.eu
1.5 ELECTRICAL COMMUNICATION
M12, 8 pin male connector on the SMC-520 schematic layout
Pin
Free cable end wire color
Sensor function
Details
1
White
Signal Ground
2
Brown
RS232 Tx
default 38400 8N1
3
Green
RS232 Rx
4
Yellow
Ground
5
Gray
VDC -
6
Pink
RS485 Data+
default 38400 8N1
7
Blue
RS485 Data-
8
Red
VDC+
Power input 12…30 VDC
Note: Please pay special attention to the SMC-520 wire colours, as applying voltage to the data wires
may damage the sensor.
The serial communication over RS232 and RS485 can be configured for the following baudrates 4800,
9600, 19200, 38400 and 57600 bps from the SMC Configuration software. The SMC-520 is set to
automatically output the strings in the selected data format in the selected output rate.

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SMC-520 User Guide revision 1.3 SMC Ship Motion Control www.shipmotion.eu
1.6 SMC INSTRUMENTS CONFIGURATION SOFTWARE
The SMC configuration software is a PC application, after the sensor serial communication has been
connected the SMC Configuration Software can be used to set the sensor configuration and
communication parameters according to requirements.
The settings entered in the SMC Configuration software are written to the sensor. The settings are
stored in flash memory inside the sensor and are not dependent on power supply or battery power.
1.6.1 DEFAULT SETTINGS AT THE FACTORY
The sensor is delivered from SMC with a set of default parameters which can be changed from the
SMC IMU Configuration Software.
The factory default communication settings are as follows.
Baud Rate 38400
8 Databits
No parity
1 stop bits