Delta Controls 2HT - Manual (Page 3)

002522-2HT 180210.doc 3
WARRANTY
This instrument is guaranteed against faulty workmanship and material for a period of one year from the
date of delivery. The company undertakes to repair, free of charge, ex-works any instrument found to be
defective within the specified period provided the instrument has been used within the specification in
accordance with these instructions and has not been misused in any way. Detailed notice of such defects
and satisfactory proof thereof must be given to the company immediately after the discovery and the
goods have to be returned free of charge to the company, carefully packed and accompanied by a
detailed failure report.
HEALTH AND SAFETY
To comply with health and safety requirements, any returned instrument must be clean and safe to
handle and accompanied by a formal statement to that effect duly signed by an authorised officer of the
user company. Any instrument returned without certification will be quarantined and no action will occur
until cleared. We reserve the right to refuse to handle, and to return to the user, subject to transportation
charge, any instrument for which a declaration of safety is not received.
COPYRIGHT
Copyright © 1994 - 2007 Delta Controls Limited. All rights reserved. No part of this publication may be
reproduced, stored in a retrieval system or transmitted in any form or by any means without the express
prior written permission of Delta Controls Limited.
Copyright © 1994 - 2007
Delta Controls Limited. All rights reserved. All software and firmware supplied
with this instrument, on disc or embedded are the sole property of Delta Controls Limited.
DISCLAIMER
Delta Controls Limited does not authorise or warrant any product for use in life support devices and/or
systems without the express written approval of an officer of the Company. All information contained
within this manual is provided in good faith as a guide only; for specific applications, Delta Controls
Limited should be contacted directly. The information contained within this manual is subject to change
without notice.
NOTE
HART® is a registered trademark of the HART Communication Foundation.
Hastelloy C® is a registered trademark of Cabot Corporation.
Monel® is a registered trademark of International Nickel Co.
GLOSSARY
Characterise Factory procedure used to calibrate the electronics so that sensor errors and
temperature shifts are eliminated.
Configurators To take advantage of the extra features within a smart transmitter a "configurator" is
used. This normally allows viewing and editing of variables via a keyboard and
integral display.
Damping
Software function used to increase the response time of the transmitters analogue
output. This helps to smooth the output when there are rapid input variations.
Descriptor
A sixteen character field for additional identification of the field device, this may
contain its plant location, or name.
EEPROM
Electrically erasable programmable read only memory, that retains its memory even
during long term power removal
EMC
Electro Magnetic Compatibility, the ability of a product to function without influencing
any other product, or being influenced
HART®
Highway Addressable Remote Transducer. This protocol has become the de facto
standard for digital communications with smart field devices. The HART®
Communications Foundation is the owner of the registered trademark and provides
support for end users and developers.