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Related Manuals for METER ATMOS 22
Summary of Contents for METER ATMOS 22
- Page 1 ATMOS 22...
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Page 3: Table Of Contents
....................2 2.1 Installation ....................2 2.2 Connecting the ATMOS 22 ................4 2.2.1 Connecting to a ZENTRA, EM60, or Em50 Family Data Logger ..4 2.2.2 Connecting to a Non-METER Logger ..........5 2.3 Communication ..................6 3. System ......................7 3.1 Specifications .................... 7 3.2 Anemometer .................... -
Page 5: Introduction
(Section 3). A robust, no moving parts design that prevents errors because of wear or fouling make the ATMOS 22 ideal for long-term, remote installations. Applications of the ATMOS 22 are listed below: • Weather monitoring • Microenvironment monitoring •... -
Page 6: Operation
METER sensors are built to the highest standards. Misuse, improper protection, or improper installation may damage the sensor and possibly void the manufacturer’s warranty. Before integrating ATMOS 22 or other METER sensors into a system, make sure to follow the recommended installation instructions and have the proper protections in place to safeguard sensors from damage. - Page 7 Connecting Verify Use the SCAN function in the software to show a list of ATMOS 22 readings. Verify that these readings are within expected ranges. Third Party Data Loggers To connect to a non-METER data logger, see the ATMOS 22 Integrator Guide.
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Page 8: Connecting The Atmos 22
ATMOS 22 Table 1 Installation (continued) Improperly protected cables can lead to severed cables or disconnected sensors. Cabling issues can be caused by many factors such as rodent damage, driving over sensor cables, tripping over the cable, not leaving enough cable slack during installation, poor sensor wiring connections. -
Page 9: Connecting To A Non-Meter Logger
The ATMOS 22 comes standard with a 5-m cable. It may be purchased with custom cable lengths for an additional fee (on a per-meter fee basis). METER has successfully tested digital communication on cable lengths up to 1,000 m (3,200 ft). This option eliminates the need for splicing the cable (which introduces a possible failure point). -
Page 10: Communication
Scientific data loggers, power the sensors off a 12 V port or switched 12 V port. If the ATMOS 22 has a standard 3.5-mm plug and will be connected to a non-METER data logger, please use one of the following two options when connecting to a non-METER data logger. -
Page 11: System
SYSTEM 3. SYSTEM This section describes the ATMOS 22 ultrasonic anemometer. 3.1 SPECIFICATIONS Measurement Specifications Horizontal Wind Speed Range: 0 –30 m/s Resolution: 0.01 m/s Accuracy: The greater of 0.3 m/s or 3% of measurement Wind Gust Range: 0 –30 m/s Resolution: 0.01 m/s Accuracy:... - Page 12 ATMOS 22 Electrical and Timing Characteristics Supply Voltage (VCC) to GND Minimum 3.6 VDC continuous Typical Maximum 15.0 VDC continuous Digital Input Voltage (logic high) Minimum 2.8 V Typical 3.0 V Maximum 15.0 V Digital Input Voltage (logic low) Minimum –0.3 V...
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Page 13: Anemometer
SYSTEM Power up Time (SDI Ready)—aRx! Commands Minimum Typical 10 s Maximum Power up Time (SDI Ready)—Other Commands Minimum Typical 800 ms Maximum Measurement Duration Minimum Typical 110 ms Maximum 3,000 ms Compliance Manufactured under ISO 9001:2015 EM ISO/IEC 17050:2010 (CE Mark) 3.2 ANEMOMETER The open space in the center of the anemometer is where the ATMOS 22 measures wind speed. -
Page 14: Temperature Sensor
ATMOS 22 3.3 TEMPERATuRE SENSOR The ATMOS 22 temperature measurement (Figure 5) is made in the small stainless steel needle containing a tiny temperature sensor (thermistor) that extends from the middle of the four ultrasonic transducers in the center of the anemometer. The speed of sound is temperature dependent, so the ATMOS 22 temperature measurement is important for the... -
Page 15: Wind Speed And Direction Theory
SYSTEM 3.5 WIND SPEED AND DIRECTION THEORY The theory behind the anemometer comes from Campbell and Unsworth (1979). The speed (m/s) of sound in still air depends on air temperature (K), vapor pressure (kPa), and atmospheric pressure, (kPa), as shown in Equation 0 32 20 067... -
Page 16: Limitations
ATMOS 22 Equation 7 Where the overbar indicates an average of the values sampled every 10 s, wind direction is computed with Equation = Equation 8 The wind measurement requires 42 ms to complete. An additional 60 ms are required for the computations to determine phase differences. -
Page 17: Service
SERVICE 4. SERVICE This section contains calibration frequencies, cleaning and maintenance, troubleshooting guidelines, and contact information.. 4.1 CALIBRATION The relationship between wind speed and phase is determined by geometry and the laws of physics. Since the geometry is tightly controlled in manufacture, no individual anemometer calibration is needed. -
Page 18: Troubleshooting
Sonic transducers Temperature sensor Figure 6 Temperature needle and sonic transducers 4.3 TROuBLESHOOTING Table 2 Troubleshooting the ATMOS 22 Problem Possible Solutions Check power to the sensor. Check sensor cable and 3.5-mm plug integrity. Check data logger wiring to ensure the following connections: Brown—3.6 VDC to 15 VDC power supply... -
Page 19: Customer Support
Phone: +1.509.332.5600 Fax: +1.509.332.5158 Website: www.metergroup.com If contacting METER by email or fax, please include the following information: Name Email address Address Instrument serial number Phone Description of the problem NOTE: For ATMOS 22 ultrasonic Anemometer purchased through a distributor, please contact the distributor... -
Page 20: Terms And Conditions
PRICES AND PAYMENT. Invoice prices will be based upon METER prices as quoted or at METER list price in effect at the time an order is received by the Seller. Prices do not include any state or federal taxes, duties, fees, or charges now or hereafter enacted applicable to the goods or to this transaction, all of which are the responsibility of the Buyer. - Page 21 SERVICE WARRANTIES. The Seller warrants all equipment manufactured by it to be free from defects in parts and labor for a period of one year from the date of shipment from factory. The liability of the Seller applies solely to repairing, replacing, or issuing credit (at the Seller’s sole discretion) for any equipment manufactured by the Seller and returned by the Buyer during the warranty period.
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Page 22: References
ATMOS 22 REFERENCES Campbell GS, Unsworth MH. 1979. An inexpensive sonic anemometer for eddy correlation. J Appl Meteor. 18:1072–1077. -
Page 23: Index
10 calibration 13 specifications 7–10 cleaning 13 cable length 7 components 11 compliance 9 connecting the ATMOS 22 4 dimensions 7 connections electrical and timing characteristics 8 customer support 15 measurement specifications 7 data acquisition system 3 terms and conditions 16–17 See also installation,... - Page 24 14587-01 1.6.2018 METER Group 2365 NE Hopkins Court Pullman, WA 99163 T: +1.509-332-5600 F: +1.509.332.5158 E: info@metergroup.com W: www.metergroup.com © 2017, 2018 All Rights Reserved.
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