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Summary of Contents for Comet W0910
- Page 1 Instructions for use W0910 W0911 W0932 W3910 W3911 W7910 Temperature, relative humidity and atmospheric pressure ® transmitters with output to the LoRaWAN network...
- Page 2 © Copyright: COMET SYSTEM, s.r.o. This manual is forbidden to copy and make changes of any nature without the express consent of COMET SYSTEM, s.r.o. All rights reserved. COMET SYSTEM, s.r.o. constantly developing and improving its products. Therefore, it reserves the right to make technical changes to the device / product without prior notice.
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Page 3: Table Of Contents
Content CONTENT ....................3 INTRODUCTION ..................4 SAFETY PRECAUTIONS AND PROHIBITED HANDLING......5 INSTALLATION ..................6 Mounting ..................6 Switching the device on ..............8 Displaying the device data ............8 Device usage and settings ............10 Alarm functions ................12 MANUFACTURED MODELS .............. -
Page 4: Introduction
Introduction ® The LoRaWAN network is used to transmit short data messages and is optimized for low power consumption. It operates in the unlicensed radio band, which brings cheaper traffic, but also legislative restrictions – messages can not be sent faster than with a 5 minute interval. ®... -
Page 5: Safety Precautions And Prohibited Handling
Safety Precautions and Prohibited Handling Read the following safety precautions carefully before using the appliance, and keep it in mind during use! • The device includes a radio transmitter operating in the non-license frequency band with the power specified in the Technical Parameters. This band and performance are used in the countries of the European Union. -
Page 6: Installation
Installation Installation, commissioning and maintenance must only be carried out by a qualified person in accordance with applicable regulations and standards. Mounting For the optimum operation of the Wx9xx Series, necessary ensure their vertical position. Models without external probes or sensors may loosely stand on their bottom base as required, and other models are recommended to fix... - Page 7 Optimal positioning of the transmitter in terms of radio range: All materials absorb radio waves if they must pass through them. The most significant in terms of radio wave propagation are metal objects, concrete, reinforced concrete and walls. If you install the device at a greater distance from the base station (gateway) or in locations where the radio signal difficult to penetrates, observe the following recommendations: •...
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Page 8: Switching The Device On
Switching the device on and off The device is supplied with installed battery, but in off state. During the ® power-on process, the device is also activated in the LoRaWAN network, so the device should be within range of the network in which it will be used and ideally in its target position when powering on. - Page 9 Information on the display – they are displayed cyclically in three steps (the images below contain only examples of the display, the content of the display always depends on the specific device model): 1. step (lasts 4 sec) the display shows data on measured quantities on channels No.1 and No.2 2.
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Page 10: Device Usage And Settings
Cloud is an internet storage of data. You need a PC with internet connection and a web browser to work with. Navigate to the cloud address you use and sign in to your account - if you use COMET Cloud by a transmitter manufacturer, enter www.cometsystem.cloud... - Page 11 – in COMET Cloud click on the correct device in the My devices list and then select Installation. If you have a problem with the signal, see the Problems with recieving radio messages chapter.
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Page 12: Alarm Functions
Alarm functions The transmitter sends the measured values in regular messages, according to the set sending interval. In addition, the transmitter can also send extraordinary alarm messages when a new alarm is generated on a tracked channel or the alarm in progress is extinguished. This feature allows you to extend the battery life by setting a longer sending interval for regular messages, and the user is informed about changes in the alarm status by extraordinary messages according to the current situation. - Page 13 Examples of sent alarm messages triggered by changes in the measured value (eg temperature) Device configuration: - sending interval: 15 min - alarm for channel teparature: ON - alarm will be activated if: value is greater than limit - limit of alarm: any value - delay of alarm: none - hysteresis: 0 °C After a new alarm is triggered, an extraordinary alarm message is sent...
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Page 14: Manufactured Models
Manufactured models COMET's Wx9xx transmitters differ in the type of measured quantities (temperature, relative humidity, atmospheric pressure) and the location of the sensors (compact design with internal sensors or external probes on the cable). The enclosure covers electronic circuits, internal sensors, and a battery. - Page 15 W0932 Thermometer with s built-in internal sensor and two inputs for external Pt1000 probe The device measures the temperature from two external probes of the Pt1000/E line (input No. 1 and No. 2) and from the built-in internal sensor (input No. 3). The probe is not part of the instrument.
- Page 16 Digi/E probes The transmitter measures the temperature, relative humidity and dew point temperature from the COMET Digi/E external probe (the probe is not part of the instrument). Response to jump-change of temperature and relative humidity is significantly faster than models with internal sensor.
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Page 17: Application Notes
Application notes Operation of transmitter in various applications____________ Prior to commissioning, it is first necessary to assess whether its use is appropriate for the purpose, to determine its optimum setting and, if it is part of a larger measuring system, to prepare a metrological and functional control. - Page 18 • verify that the radio link indicator is lit on the transmitter display. If not, check whether your gateway is correctly connected and functional. You can verify the gateway in COMET Cloud by checking Administration / LoRa Gateways page - here you must see your gateway (according to the gateway EUI identifier) and the gateway must have the status Online.
- Page 19 (see the procedure above). It is possible that your transmitter is connected to some far away gateway (perhaps a foreign one). In COMET Cloud, on the My Devices / Installation page, go to the Signal Strength tab and check whether your gateway is listed in the Gateway EUI drop-down list.
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Page 20: Operating And Maintenance Recommendations
A critically weak battery that can fail at any time is indicated by a blank battery symbol in the COMET cloud and flashing the empty battery symbol on the device display. Replace the battery as soon as possible. ie-wfs-Wx9xx-03... -
Page 21: Service Recommendations
Refer to the battery symbol + (plus pole) printed on the electronics board at the battery location: If you order a new battery from the device manufacturer (COMET SYSTEM, s.r.o., order code A4203), you will also receive it with the glued handle. -
Page 22: Technical Parameters
Technical parameters Power supply The device is powered by an internal lithium battery, accessible after unscrewing the cover (see the section How to replace the battery). Power batteries __________________________________ Battery type: Lithium battery 3.6 V, AA size, 2200 mAh Recommended type: Tadiran SL-760/S, 3.6 V, 2200mAh Battery life: interval sending... -
Page 23: Measurement And Transmission Of Data
Measurement and transmission of data Measuring interval: 1 minute Message sending interval: Adjustable for 5-10-15-20-30 minutes, 1-2-3-4-6-8-12-24 hours Radio part Radio technology: ® LoRa Working frequency: Europe 863-870 MHz ® LoRaWAN version: 1.0.4 ® LoRaWAN Regional parameters, version: RP002, 1.0.1 Maximum transmission power: 25 mW (14 dBm) Antenna:... -
Page 24: Operating And Storage Conditions
W0910 150 g W0911, W3910, W3911, W7910 155 g W0932 160 g Case material: Protection (unused the Pt1000 probe inputs must be sealed with supplied the connector caps): W0910, W0911, W0932, W3911: IP65 W3910, W7910: IP65, sensors under the cap IP40 ie-wfs-Wx9xx-03... -
Page 25: Transmitter Input Parameters
0.1 °C Recommended calibration interval: 2 years W0911 _________________________________________ Measured variable: 1 x temperature from the COMET Pt1000/E external probe Range: (-90 to +260) °C, sensor Pt1000/3850 ppm Input accuracy (without probes): ±0.2 °C in range -90 to +100 °C ±0.2 % of measured value in range +100 to +260 °C... - Page 26 Recommended calibration interval: 2 years W0932 _________________________________________ Measured variable: 1 x internal temperature (input No. 3) 2 x temperature from external probe COMET Pt1000/E Range: (30 až +60) °C Temperature internal: (-200 až +260) °C, Temperature external: sensor Pt1000/3850 ppm Accuracy of internal sensor: ±...
- Page 27 W3910 _________________________________________ Measured variables: Temperature and relative humidity from internal sensor. Dew point temperature calculated from measured temperature and relative humidity. Range: Temperature: (-30 to +60) °C Relative humidity: (0 to 100) %RH without permanent condensation Dew point temperature: -60 to +60 °C Accuracy: Temperature: ±...
- Page 28 W3911 _________________________________________ Measured variables: The temperature and relative humidity measured by Digi/E series external probe. point temperature calculated from measured temperature and relative humidity. Range, accuracy and response time: According to the connected Digi/E series probe Connection method: Digi/E series probe. The probe is terminated by a 4-pin M8 ELKA 4008V connector.
- Page 29 Response time (air flow approx. 1 m/s): Temperature: t90 < 8 min (temperature change 20 °C) Relative humidity: t90 < 50 s (humidity change 30 %RV, constant temperature) Resolution: Temperature including dew point temperature: 0.1 °C Relative humidity: 0.1 %. Atmospheric pressure: 0.1 hPa Recommended calibration interval: 1 year...
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Page 30: Dimensional Drawings
Dimensional drawings W0910 W0911 W3911 W0932 ie-wfs-Wx9xx-03... -
Page 31: Declaration Of Conformity
W3910 W7910 Declaration of Conformity The transmitter complies with the requirements of Directive 2014/35 / EU. The original Declaration of Conformity can be found at www.cometsystem.com. ie-wfs-Wx9xx-03... -
Page 32: Appendices
Appendices Appendix 1: Connecting the Pt1000/E probe connector Appendix 2: Connection of the Digi/E probe connector Appendix 3: Accuracy of dewpoint temperature measurement ie-wfs-Wx9xx-03...
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