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A good user manual
The rules should oblige the seller to give the purchaser an operating instrucion of Omega PSW 31, along with an item. The lack of an instruction or false information given to customer shall constitute grounds to apply for a complaint because of nonconformity of goods with the contract. In accordance with the law, a customer can receive an instruction in non-paper form; lately graphic and electronic forms of the manuals, as well as instructional videos have been majorly used. A necessary precondition for this is the unmistakable, legible character of an instruction.
What is an instruction?
The term originates from the Latin word „instructio”, which means organizing. Therefore, in an instruction of Omega PSW 31 one could find a process description. An instruction's purpose is to teach, to ease the start-up and an item's use or performance of certain activities. An instruction is a compilation of information about an item/a service, it is a clue.
Unfortunately, only a few customers devote their time to read an instruction of Omega PSW 31. A good user manual introduces us to a number of additional functionalities of the purchased item, and also helps us to avoid the formation of most of the defects.
What should a perfect user manual contain?
First and foremost, an user manual of Omega PSW 31 should contain:
- informations concerning technical data of Omega PSW 31
- name of the manufacturer and a year of construction of the Omega PSW 31 item
- rules of operation, control and maintenance of the Omega PSW 31 item
- safety signs and mark certificates which confirm compatibility with appropriate standards
Why don't we read the manuals?
Usually it results from the lack of time and certainty about functionalities of purchased items. Unfortunately, networking and start-up of Omega PSW 31 alone are not enough. An instruction contains a number of clues concerning respective functionalities, safety rules, maintenance methods (what means should be used), eventual defects of Omega PSW 31, and methods of problem resolution. Eventually, when one still can't find the answer to his problems, he will be directed to the Omega service. Lately animated manuals and instructional videos are quite popular among customers. These kinds of user manuals are effective; they assure that a customer will familiarize himself with the whole material, and won't skip complicated, technical information of Omega PSW 31.
Why one should read the manuals?
It is mostly in the manuals where we will find the details concerning construction and possibility of the Omega PSW 31 item, and its use of respective accessory, as well as information concerning all the functions and facilities.
After a successful purchase of an item one should find a moment and get to know with every part of an instruction. Currently the manuals are carefully prearranged and translated, so they could be fully understood by its users. The manuals will serve as an informational aid.
Table of contents for the manual
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Page 1
User’ s Guide www .omega.com e-mail: info@omega.com PSW31 SERIES ELECTRONIC PRESSURE SWITCH FOR PNEUMA TIC APPLICA TIONS[...]
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Page 2
OMEGAnet ® On-Line Service Internet e-mail www .omega.com info@omega.com Servicing North America: USA: One Omega Drive, P .O. Box 4047 ISO 9001 Certified Stamford, CT 06907-0047 TEL: (203) 359-1660 F AX: (203) 359-7700 e-mail: info@omega.com Canada: 976 Bergar Laval (Quebec) H7L 5A1 TEL: (514) 856-6928 F AX: (514) 856-6886 e-mail: info@omega.ca Fo[...]
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Page 3
MA TERIALS OF CONSTRUCTION Housing Die-Cast Zinc SPECIFICA TIONS Por ts/Mounting Plate 1/4" NPT Adjustment Range -14 to 350 PSI (-1 to 25 bar) Maximum Pressur e See Par t Number Identification T able T emperatur e Rating Ambient 14° to 140° F (-10° to 60° C) Media 14° to 175° F (-10° to 80° C) T emperatur e Sensitivity @ Zero Point Set[...]
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Page 4
P AR T NUMBER IDENTIFICA TION ELECTRICAL P ARAMETERS Electrical connection DIN 43650 T able A Power supply (polarity safe) 18 to 32V DC Permissible r esidual ripple 10% (within 18 to 32V) Current consumption <50 mA (plus load cur rent) SWITCHING STEP P ART PRESSURE MAXIMUM SIZE OF NUMBER RANGE – PSI PRESSURE DISPLA Y* PSW31B -14 – 15 145 0.1[...]
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Page 5
a) Adjusting the switching point. Case 1 or Case 2 Press and hold the SP button. The display will show the previous switching pressur e setting, and the dotted bar will flash while the button is pressed down (case 1). Y ou can now use the cursor keys to adjust the switching point upwards or downwar ds. If a cursor key is held down, the values will [...]
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Page 6
Switching Characteristic Graphs Signal “on” with rising pressure Setting SP* > RP** Explanation: When the switching point (SP) is adjusted HIGHER than the reset point (RP), then the switching output will be “nor mally of f”. When the switching point (SP) is adjusted LOWER than the reset point (RP), then the switching output will be “no[...]
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Page 7
WARRANTY/DISCLAIMER OMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials and workmanship for a period of 13 months from date of purchase. OMEGA ’ s W arranty adds an additional one (1) month grace period to the normal one (1) year product warranty to cover handling and shipping time. This ensures that OMEGA ’ s customer[...]
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Page 8
Where Do I Find Ever ything I Need for Pr ocess Measurement and Contr ol? OMEGA...Of Course! TEMPERA TURE ✔ Thermocouple, R TD & Thermistor Pr obes, Connectors, Panels & Assemblies ✔ W ire: Thermocouple, R TD & Thermistor ✔ Calibrators & Ice Point References ✔ Recorders, Contr ollers & Pr ocess Monitors ✔ Infrared Pyr [...]