Summary of Contents for ALL WEATHER 7150 Series
- Page 1 Model 7150 Series Digital Barometer User’s FAA APPROVED Manual FAA APPROVAL Rev. D PENDING NOT FAA APPROVED All Weather Inc. • 1165 National Drive • Sacramento, CA 95834 • USA • 800.824.5873 • www.allweatherinc.com...
- Page 2 All Weather, Inc. and the All Weather, Inc. logo are trademarks of All Weather, Inc.
- Page 3 Model 7150 Series Digital Barometer User’s Manual Revision History Revision Date Summary of Changes Clarified description of boot counter operation, rotated mounting diagram in Figure 4 to match photo in Figure 3, matched dimensions in specifications to those in Figure 4,...
-
Page 4: Table Of Contents
Model 7150 Series Digital Barometer User’s Manual TABLE OF CONTENTS 1. OVERVIEW ......................... 1 1.1 Data Collection Platform Kit Options ................1 2. THEORY OF OPERATION ..................2 2.1 Pressure Transducer ......................2 3. OPERATION ....................... 3 3.1 Communication .........................3 3.1.1 Sensor Polling ......................4 3.1.2 Boot Counter ......................6... -
Page 5: Overview
1.1 DATA COLLECTION PLATFORM KIT OPTIONS The Model 7150 Series of digital barometers is also available as part of a complete kit for installation in the All Weather Inc. Model 1190 or Model 1190-I Data Collection Platform (DCP) used in AWOS systems. -
Page 6: Theory Of Operation
User’s Manual 2. THEORY OF OPERATION The 7150 Series Digital Barometer measurements are based on a peizoresistive pressure sensor and a temperature sensor, which are measured continuously. A microprocessor in the barometer calculates the pressure reading based on compensations for pressure linearity and temperature dependence. -
Page 7: Operation
3. OPERATION 3.1 COMMUNICATION The 7150 Series Digital Barometer communicates over its serial port at one of four baud rates. The baud rate is selected by the SW3 DIP switches inside the enclosure. Figure 2 shows the location of the SW3 DIP switches. -
Page 8: Sensor Polling
Model 7150 Series Digital Barometer User’s Manual All commands sent to the barometer must end in a carriage return (0x13) and line feed (0x10). The barometer will output an identification message out of its serial port upon being powered up. - Page 9 Model 7150 Series Digital Barometer User’s Manual Sample Poll Responses * * . * * * - 2 5 * * . * * * 2 9 . 9 3 2 2 9 . 9 3 5 7150 Pressure Sensor #1 reading 29.932 inHg Pressure Sensor #2 reading 29.935 inHg...
-
Page 10: Boot Counter
Model 7150 Series Digital Barometer User’s Manual * * * * * * * * . * * * * * . * * * * * . * * * * * . * * * Barometer has just been powered up—this response is sent in response to a poll... -
Page 11: Installation & Checkout
The barbed pressure fitting is not recommended for turbulent or high-speed static wind conditions — the accuracy quoted for the 7150 Series Digital Barometers does not include any wind effects. The pressure fitting must also be carefully protected from rain since water may get into the pressure connector and cause errors in the pressure measurement. -
Page 12: Pressure Connections
The pressure fitting must also be carefully protected from rain to keep water from getting into the pressure connector where it may cause errors in the pressure measurement. 7150 Series Digital Barometers are designed to measure the pressure of gases that are clean, non- condensing, non-conducting, and non-corrosive. -
Page 13: Maintenance
Section 5.1 using the maintenance procedures described in Section 5.2. 5.1 PERIODIC MAINTENANCE SCHEDULE Periodic maintenance procedures for the 7150 Series Digital Barometers are divided into three categories within the maintenance cycle — monthly, triannual, and annual maintenance. -
Page 14: Quad Plate Pressure Port Vent Cleaning (If Equipped)
If a sensor reading differs from the standard by more than 0.05 inHg, replace the sensor. Note that offsets are applied when the 7150 Series Digital Barometers are used with AWOS systems to keep the displayed sensor readings within ±0.005 inHg of the standard. -
Page 15: Specifications
Model 7150 Series Digital Barometer User’s Manual 6. SPECIFICATIONS Parameter Specification 14.7 – 33.0 inHg Pressure Range (500 – 1117 hPa) -40 to +185ºF Operating Temperature (-40 to +85ºC) -67 to +257ºF Storage Temperature (-55 to +125ºC) Humidity noncondensing Pressure Units... -
Page 16: Electromagnetic Compatibility
Model 7150 Series Digital Barometer User’s Manual 7. ELECTROMAGNETIC COMPATIBILITY The 7150 Digital Barometer is designed to comply with the CE norms for electromagnetic com- patibility. The condition for this compliance is the use of braided cables and proper grounding techniques. -
Page 17: Warranty
User’s Manual 8. WARRANTY Unless specified otherwise, All Weather Inc. (the Company) warrants its products to be free from defects in material and workmanship under normal use and service for one year from date of installation or a maximum of two years from date of shipment, subject to the following... - Page 18 All Weather Inc. 1165 National Drive Sacramento, CA 95818 7150-001 Fax: 916.928.1165 Revision D Phone: 916.928.1000 April, 2014 Toll Free: 800.824.5873...
Need help?
Do you have a question about the 7150 Series and is the answer not in the manual?
Questions and answers