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- Page 1 083F ODEL ELATIVE UMIDITY ENSOR ANUAL Met One Instruments, Inc Corporate Sales & Service: 1600 NW Washington Blvd. Grants Pass, OR 97526 Tel (541) 471-7111 Fax (541) 471-7116 www.metone.com service@metone.com 083F-9800 Rev A...
- Page 2 083F-9800 Rev A Page 2...
- Page 3 Copyright Notice Model 083F Relative Humidity Sensor Manual. © Copyright 2021 Met One Instruments, Inc. All Rights Reserved Worldwide. No part of this publication may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any other language in any form by any means without the express written permission of Met One Instruments, Inc.
- Page 4 One Instruments, Inc. be replaced or repaired and return freight prepaid. In no case shall the liability of Met One Instruments, Inc. exceed the purchase price of the product. This warranty may not apply to products that have been subject to misuse, negligence, accident, acts of nature or that have or modified other than by Met One Instruments, Inc.
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Page 5: Table Of Contents
4.1. Relative Humidity Sensor Check-out ................... 11 4.2. Limitations of RH Measurements at Below Freezing Temperatures ........11 4.3. General Maintenance Schedule ..................12 4.4. 083F Relative Humidity Sensor Maintenance and Calibration ..........12 4.5. Sensor Maintenance ......................12 4.5.1. -
Page 6: General Information
GENERAL INFORMATION 1.1. Description The 083F sensor is an extremely accurate microprocessor controlled relative humidity sensor. The relative humidity sensor responds to the full range of 0 to 100% humidity. Response is linear with negligible hysteresis or temperature dependence. The sensor is designed to be mounted in a radiation shield when used outdoors. - Page 7 Figure 2 Model 083F-0-6 Sensor 083F-9800 Rev A Page 7...
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Page 8: 083F Options
1.2. 083F Options The 083F options are defined by dash numbers as follows: 083F-0-__ (Shield Option) 1.2.1. Radiation Shield Compatibility Option: 6 = Use with Model 076B motor aspirated radiation shield. This sensor comes with 8- inch long pigtail wires for connection to the radiation shield junction box. Refer to the radiation shield manual for sensor and cable connections. -
Page 9: Installation
ADAPTER AND ATTACH PLATE. BACK OUT ADAPTER PLATE TO ABOUT ½” AND SECURE SHIELD THE SENSOR TO THE MOUNTING ADAPTER BY TIGHTENING THE TWO SET SCREWS WITH SUPPLIED 5/64” ALLEN WRENCH. Figure 2 Radiation Shield Installation 083F-9800 Rev A Page 9... -
Page 10: Wiring Instructions
RH Analog Output Pin D Black No Connection Pin E No Connection Pin F No Connection No Connection No Connection White/Brown Shield Figure 3 Electrical Connector View looking at connector pins. (Pins are also identified on connector). 083F-9800 Rev A Page 10... -
Page 11: Operational Check-Out And Calibration
The sensor’s relative humidity output is referenced to saturated water vapor pressure above liquid water. When the air temperature is below freezing, the sensor’s maximum theoretical measurement range is limited as follows: Air Temperature Maximum RH (Deg C) 083F-9800 Rev A Page 11... -
Page 12: General Maintenance Schedule
Sensor Maintenance 4.5.1. Sensor Element The RH sensor element is not user-replaceable (replacement requires sensor recalibration). If the element becomes damaged please send the 083F sensor to Met One Instruments for repair. Please obtain shipping instructions and a return authorization (RA) number before returning any unit. -
Page 13: Spare Parts
4.5.2. Spare Parts 560014 820216 720050 Figure 5 Spare Parts 820216 RH SENSOR ELEMENT (Requires factory calibration) 560014 FILTER, MEMBRANE 720050 O-RING (Two required) 083F-9800 Rev A Page 13... -
Page 14: Operational Specifications
Temperature Coefficient: Compensated internally Analog Output: 0 to 1 VDC AutoMet Auto ID: General Input Power: 10 to 18 VDC @ < 5 mA Dimensions: Length: 8.5 in (21.59 cm) Diameter: 0.75 in (1.91 cm) 083F-9800 Rev A Page 14...
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