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Summary of Contents for Met One Instruments 212
- Page 1 MODEL 212 PROFILER OPERATION MANUAL Document No. 212-9800 Revision E Met One Instruments, Inc 1600 NW Washington Blvd. Grants Pass, Oregon 97526 Telephone 541-471-7111 Facsimile 541-471-7116 212-9800 Rev E Page 2 of 23...
- Page 2 Copyright Notice Model 212 Profiler Operation Manual © Copyright 2007 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 3 A protective housing protects the unit. To avoid the possibility of accidental exposure, always power down the system any time service or repair work is being preformed. Repair of instrumentation manufactured by Met One Instruments, Inc. should only be attempted by manufacturer trained service personnel. 212-9800 Rev E...
- Page 4 Any product found to be defective during the warranty period will, at the expense of Met 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.
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Page 5: Table Of Contents
Flow Calibration using the Profiler Utility Program..............20 Software ........................ 22 7.1. Appendix 1: RS422 wiring diagram (SPECIAL ORDERS ONLY) ........... 23 Appendix 2: 212 Flow Diagram ................... 23 212-9800 Rev E Page 6 of 23... -
Page 6: Safety
Service procedures performed on the sensor can result in exposure to invisible laser radiation. Only a factory-authorized person must perform service on this instrument. The laser diode based sensor inside this instrument has a warning label on it as shown below. 212-9800 Rev E Page 7 of 23... -
Page 7: Familiarization
Familiarization Figure 1 shows the inside of the 212 Profiler Heated Inlet Tube Pump Mass Flow Sensor Pump Filter Laser Sensor Zero Filter Figure 1: 212 Profiler (Cover Removed) 212-9800 Rev E Page 8 of 23... -
Page 8: Installation
Connect the white plug from inlet tube to the matching connector from the 212. This is the connection for the heater on the inlet tube for heated units, for non heated units this provides a ground path for the inlet tube. - Page 9 Slide stopper Push the inlet tube into the unit. You will feel it connect and seat Inlet tube receptacle Slide rubber stopper back down install the hard plastic washer and the grey nut. 212-9800 Rev E Page 10 of 23...
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Page 10: Attaching The Tsp Inlet To The Aluminum Inlet
Attach the tripod to the bottom of the 212 unit securely with the thumb screw of the tripod. Position the tripod so that the legs are spaced wide enough to ensure that the unit is stable. -
Page 11: Met One Sensor Mount
3.3.2. Met One sensor mount The 212 can also mount to a sensor tower or an 905 Met One tripod as part of a sensor array. A standard Met cross-arm tube is attached to the tripod or tower. The 212 can mount into a standard Met One wind sensor receiver which mounts on the cross-arm. -
Page 12: Description
Description 4.1. Overview The 212 Profiler was designed to monitor airborne particle density and size profile in indoor or outdoor applications. It measures and reports eight different particle sizes simultaneously. Using the supplied software utility, the counts or concentration can be displayed and logged. -
Page 13: Inlet Tube Heater
The sample air is drawn into the 212 by an internal rotary vane pump. Flow rate is controlled with a flow sensor and a pulse-width modulated feedback system to maintain a constant 1 LPM on the inlet nozzle. An additional 2 LPM is added around the sample flow (sheath air) to contain the particles. -
Page 14: Specifications
Measurement Ranges (Counter) 8 channels that are preset in the range of 0.5μm to 10μm (0.3 optional) Concentration Range 0-9,000,000 particles per cubic foot Sensitivity 0.3µm (Counter) Model 212-2 0.5um Model 212-1 Accuracy +/- 10% to calibration aerosol Sample Air Flow Rate... -
Page 15: Applications
4.4. Applications Because the Model 212 has many features and can be configured in many ways, it is finding use in a broad range of applications. • Clean room monitoring, verification, and filter testing. • Process control monitoring in sawmills, grain elevators, quarries etc. -
Page 16: Communication Services For 212
Terminal mode. The application program Profiler Utility uses Modbus. This is the preferred method of configuration and operation of a 212 Profiler. A Compact Disc (Part Number 9777) is provided with each unit that contains the Profiler Utility program and user manual. - Page 17 To set the sample time setting, send T x<cr> where x is the sample time in seconds. The range is 1 to 3600 seconds (1 hour). Exit Terminal mode and return to Modbus mode. 212-9800 Rev E Page 18 of 23...
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Page 18: Inlet Flow Calibration
6.1. Flow overview (See appendix 2) The 212 operates with an inlet flow of 1.0 LPM (liters per minute). The inlet air flow is surrounded by a stream of clean air, referred to as sheath air. This sheath air keeps the particles from leaving the sample flow stream. This helps keep the particles from depositing on the optics. -
Page 19: Flow Calibration Using The Profiler Utility Program
6.3. Flow Calibration using the Profiler Utility Program. The utility program gives the user much more control of the 212 unit than the limited set of the terminal commands. • Start the 212 ‘Profiler Utility’ program supplied with the unit. - Page 20 ‘Flow Rate’ of 1.00 lpm. • After new value is entered wait until ‘Flow rate’ reads about 1.00 LPM . If the external flow sensor doesn’t report a flow of 1.0 LPM repeat until a 212-9800 Rev E Page 21 of 23...
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Page 21: Software
Note: In the Profiler Utility Program manual you may see references to a 9720 or 9722 particle counter. These counters are the sub-modules used within the 212 Profiler. The manual contains some information, which may not apply to the 212 profilers. -
Page 22: Appendix 1: Rs422 Wiring Diagram (Special Orders Only)
RD (A) PIN 2 TD (A) PIN 3 Ground PIN 5 RD (B) PIN 7 TD (B) PIN 8 Wiring to a 212-x or a 9722 in full duplex Appendix 2: 212 Flow Diagram 12 V INLET SOLID HEATER HEATER STATE CONTROL RELAY PLENUM...
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