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Summary of Contents for Schmidt SS 20.60
- Page 1 ® SCHMIDT Flow Sensor SS 20.60 Instructions for Use...
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Page 2: Table Of Contents
7.1 LED display ..............10 7.2 Error signaling ............12 Service information ............. 13 Declaration of conformity..........15 Imprint: Copyright 2003 SCHMIDT Technology GmbH All rights reserved. Printed in the Federal Republic of Germany Version: 300754.02B Instructions for Use SS 20.60 Page 2/16... -
Page 3: Important Information
Please refer to the separate table “SS 20.60 Profile Factors”. When using the sensor outdoors, it must be protected against direct ex-posure to the weather. -
Page 4: Safety Information
ATTENTION maximum allowed positive operating pressure of 16 bar must not be exceeded! If the above safety instructions are not observed, the sensor in the screw pipe connection may be loosened thrown overpressure. Instructions for Use SS 20.60 Page 4/16... -
Page 5: Determination Of The Position Of Installation
The sensor tip must be positioned in the center of the pipe opening as shown in Figure 1. The following table shows the necessary straight conduit lengths as a function of each disturbance. Instructions for Use SS 20.60 Page 5/16... - Page 6 45 x D 5 x D Table 1: Run-in and run-out distances This table lists the minimum values required in each case. If the listed straight conduit lengths cannot achieved, measurement accuracy may be impaired Instructions for Use SS 20.60 Page 6/16...
- Page 7 Installation position The sensor should preferably be installed in horizontally positioned pipes. ATTENTION Avoid installing the sensor in a pipe with downward flow. This would considerably increase lower measuring range limit. Instructions for Use SS 20.60 Page 7/16...
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Page 8: Mounting Instructions
Repeat the mounting procedure as described under item 1. 3. Make sure to close the safety chain before pressure is applied. The chain lock must be hung up in a way to avoid sagging of the chain. Instructions for Use SS 20.60 Page 8/16... -
Page 9: Electrical Connections
Electrical connections Digital + 24 VDC Signal Figure 3: SS 20.60 connection assignment (view of the plug pins at the sensor) The cable supplied has the following color assignment: ws = white, bn = brown, sw = black, bl = blue The negative of the dc voltage (GND) is at the same time the reference potential for the analog signal. -
Page 10: Startup
Note: After applying the supply voltage, the output signal will at first adopt a higher value and then level off at the correct measurement value after about 10 seconds. 7.1 LED display The sensor has 4 LEDs indicating its current state. Instructions for Use SS 20.60 Page 10/16... - Page 11 Operating voltage too low Operating voltage too high Electronic temperature too high Electronic temperature too low Table 2: Sensor state signaling LED off LED on: green LED on: orange LED flashes (approx. 2Hz): red Instructions for Use SS 20.60 Page 11/16...
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Page 12: Error Signaling
Causes of any error signaling have to be eliminated immediately. A significant exceeding falling below permitted operating parameters can result in permanent damage to the sensor. ATTENTION During error state signaling, the measured values analog output show considerable deviations. Instructions for Use SS 20.60 Page 12/16... -
Page 13: Service Information
Recalibration If the customer has made no other provisions, we recommend repeating the calibration at a 12-month interval. To do so, the sensor must be sent in to the manufacturer. Instructions for Use SS 20.60 Page 13/16... - Page 14 When the sensor is used in systems important for operation, we recommend keeping a replacement sensor in stock. Test certificates Upon request, we shall prepare, at a charge, a factory calibration certificate, traceable to national standards. Instructions for Use SS 20.60 Page 14/16...
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Page 15: Declaration Of Conformity
Declaration of conformity Instructions for Use SS 20.60 Page 15/16... - Page 16 SCHMIDT Technology GmbH Feldbergstrasse 1 D-78112 St. Georgen Phone +49 (0)7724/899-0 Fax +49 (0)7724/899-101 info@schmidttechnology.de www.schmidttechnology.de Instructions for Use SS 20.60 Page 16/16...
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