Delta Controls 2HTDCAL - Manual (Page 2)

WARRANTY
We guarantee this instrument 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 - 1999 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 - 1999 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.
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Commissioning and Set-up Examples
How to Trim the 4 to 20 mA current loop.
Objective:- To trim the current loop to match site standards.
From Monitor mode:- the transmitter will display {VIEW}
Press [CHANGE] {ACCESS 1}
Press [CHANGE] {ACCESS 2}
Press [SELECT] {INPUT}
Press [CHANGE] {OUTPUT}
A Press [SELECT] {FIXLOOP}
Press [SELECT] Follow the instructions for FIXLOOP, set the loop
to 4.00 mA.
CAUTION the analogue output is now
fixed and independent of the applied pressure.
Press [SELECT] Return to FIXLOOP {FIXLOOP}
Press [CHANGE] {TRIMLOOP}
Press [SELECT] {TRIM 4 mA}
Press [SELECT] Follow the instructions for trim 4 mA
Press [SELECT] {TRIM 4 mA}
Press [CHANGE] {TRIM 20 mA}
Press [CHANGE] {ESCAPE}
Press [SELECT] {TRIMLOOP}
Press [CHANGE] {ESCAPE}
Press [CHANGE] {FIX LOOP}
Press [SELECT] Follow the instructions for FIXLOOP, set the
loop to 20.00 mA.
Press [SELECT] Return to FIXLOOP {FIXLOOP}
Press [CHANGE] {TRIMLOOP}
Press [CHANGE] {TRIM 4 mA}
Press [CHANGE] {TRIM 20 mA}
Press [SELECT] Follow the instructions for trim 20 mA
Press [CHANGE] {TRIM 20 mA}
Press [CHANGE] {ESCAPE}
Press [SELECT] {TRIMLOOP}
Press [CHANGE] {ESCAPE}
Press [CHANGE] {FIX LOOP}
Press [SELECT] Follow the instructions for FIXLOOP, set the
loop to 0.00 mA and the loop will be released.
Note 1 If the difference in analogue output to site standard is large, the above procedure may need to
be repeated to correct the error. Restart the procedure from "A".
Note 2 The loop may also be released by command {RESET} in ACCESS1.
Note 3 On Version 5.00 and later, FIXLOOP times out after 20 minutes.
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