Raychem TraceTek TTDM-1 Operation And Maintenance Manual Download Page 1 | Manualshive

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TraceTek
Long-Line and Zone
Leak Detection and Location Systems

Operation and Maintenance Manual

For TTDM-1, TTDM-2, and TTDM-24
Alarm and Locating Modules

Belgium
NV Raychem SA
Diestsesteenweg 692
3010 Kessel-Lo
Tel (32) 16/351-800
Fax (32) 16/351-797

Korea
Raychem Korea Limited
831-45 Yeuksam-Dong
Kangnam-Ku
Seoul 135-080
Tel (82) 2/ 3468-1300
Fax (82) 2/ 558-5765

United Kingdom
Raychem Ltd.
Faraday Road
Dorcan, Wiltshire SN3 5HH
Tel (44) 1793/ 572-663
Fax (44) 1793/ 572-189

United States
Raychem Corporation
300 Constitution Drive
Menlo Park, CA 94025-1164
Tel (800) 553-1737

(415) 361-4900

Fax (415) 361-3215

©

1995 Raychem Corporation Printed in USA

H55472-L

PCN 137021 3/97

T

raceT

ek is a trademark of Raychem Corporation.

All information, including illustrations, is believed to be reliable. Users, however, should independently
evaluate the suitability of each product for their application. Raychem makes no warranties as to the
accuracy or completeness of the information, and disclaims any liability regarding its use. Raychem’s only
obligations are those in the Raychem Standard Terms and Conditions of Sale for this product, and in no
case will Raychem be liable for any incidental, indirect, or consequential damages arising from the sale,
resale, use, or misuse of the product. Specifications are subject to change without notice. In addition,
Raychem reserves the right to make changes—without notification to Buyer—to materials or processing
that do not affect compliance with any applicable specifications.

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Summary of Contents for TraceTek TTDM-1

Page 1: ... PCN 137021 3 97 TraceTek is a trademark of Raychem Corporation All information including illustrations is believed to be reliable Users however should independently evaluate the suitability of each product for their application Raychem makes no warranties as to the accuracy or completeness of the information and disclaims any liability regarding its use Raychem s only obligations are those in the...

Page 2: ...to various features that may be viewed and or edited The menus are navigated with the arrow keys together with the Esc escape and Enter keys Internal View B 7 User interface board 8 4 20 mA board 9 Sensor interface board 10 Motherboard 11 Power supply board 12 Fuse 200 mA 250 V 13 Power cable terminal block 14 Ground earth stud 15 Fault relay cable plug and socket 16 Leak relay cable plug and sock...

Page 3: ...eries sensing cables and all TT100 TT300 and TT500 series long line sensing cables TTDM can monitor up to 5000 ft 1500 m of sensing cable and can detect and locate the presence of liquid at any point along the cable The module also monitors the system for other alarm conditions Service required Fault Each event service leak or fault is recorded in an Events History with the time and date of occurr...

Page 4: ... then signals the alarm and displays the distance to the leak The longline system includes sensing cable and circuit components leader cable jumper cables end terminations weighted lengths and branching connectors with connectors that allow components of the system to plug together The weighted length resistor simulates a 15 ft 5 m length of sensing cable Installed at the boundary between two area...

Page 5: ...contacts with normally open and normally closed contacts both provided The relays are de energized to indicate an alarm condition The diagram below shows the relay status when each is in an alarm de energized state For other connection options please consult Appendix 5 Wiring Details 4 20 mA The module is equipped with an analog 4 20 mA interface The TTDM adjusts its current output based on whethe...

Page 6: ...ine 4 displays the current time and date the colon blinks once a second To highlight the present status the line of the display with the most recent event flashes Hint The LCD contrast may be adjusted 24 on foldout Leak 10 ft Leak Cleared Press Reset 16 30 14 Feb 1996 The Icons The Icons 2 on foldout represent the four main states of the TTDM module Monitoring This green LED indicates that the TTD...

Page 7: ...t see Auto Reset under Leak Settings on page 23 Once the Reset button is pressed the relay returns to normal the red Leak LED extinguishes and the LCD display changes System Normal 16 53 14 Feb 1996 Leak 10 ft Leak Cleared Press Reset 16 30 14 Feb 1996 If the TTDM unit has been installed correctly and the system is clear the LCD display will appear as follows Leak When liquid is detected the follo...

Page 8: ...x 6 The TTDM module constantly monitors to see whether current is passing between the loops When the system is normal there is no current passing between the loops When there is a leak on the system the maximum current flows just 270 µA the sensing cable operates on low voltage and is safe to touch If however the TTDM module detects a lower but significant level of current flow between the loops i...

Page 9: ...ed A connection is damaged There is a problem with the module What the Module Does The following shows how the alarm display would appear if the fault were caused by a broken or disconnected cable The TTDM would display a different message for a differ ent type of fault such as a loss of continuity in only one of the sensing loops When a fault condition is detected the following occur An audible a...

Page 10: ...vents in memory TTDM gives a direct indication of multiple events that is events which happen after an initial leak but before the module is manually reset The first line of the display always indicates where the liquid was first detected This location is the most useful in identifying the source of the leak The second line displays the most recent event For example The second line flashes to high...

Page 11: ...eqÕd 237 16 53 28 Feb 1996 16 17 Additional Leak If liquid contacts the sensing cable away from the initial leak the module will re alarm If the location is distant from the last alarm the TTDM shows a location in square brackets Brackets indicate that the value shown requires interpretation when an additional leak occurs the value represents the electrical center of the leaks The display also pro...

Page 12: ...n store up to 512 events If 512 events are already stored the oldest event is discarded as a new event is registered When this has occurred the Events History leaves the bottom line of the display blank Contact Raychem for assistance if you wish to clear the event history Events History Leak 250 ft 09 01 13 Feb 95 21 of 23 Events History Leak Cleared 11 33 15 Feb 95 22 of 23 Events History Reset 0...

Page 13: ... the location of the leak see Appendix 6 for detail SI Status UI Status These hexadecimal values indicate the current status of the Sensor Interface and User Interface respectively and may assist factory personnel providing diagnostic support SI Comm This indicates the success rate in percent for communications between the Sensor Interface and User Interface boards A value below 90 may indicate a ...

Page 14: ...djusted 23 on foldout You gain access to the system s settings through the View Edit Settings Menu which is on the main menu see Appendix 1 Menu Structure on page 25 Four types of set tings are available General Leak Ports Self Test In certain parts of the menu structure settings may be changed only after entering a password Entering a Password When an attempt is made to change a restricted settin...

Page 15: ...orked Contact Raychem for additional information Terminal This selection provides a real time display of communications to and from a modem or host system which can be helpful for diagnostic purposes Self Test Settings You gain access to the Self Test settings through the Self Test Menu the last item on the View Edit Settings Menu see page 25 for the menu structure The Self Test Menu allows indivi...

Page 16: ... without brackets This likely means the leak is moving or drying New location detected more than 25 ft 8 m from original location TTDM displays most recent average location in square brackets This may indicate a new leak or a new point of contact with a serpentined cable Automatic re alarm after the Re alarm interval a user setting if the leak condition still exists Leak Cleared Displayed when cab...

Page 17: ... It is recommended that the TraceTek system be thoroughly checked twice a year Such a check will identify conditions that adversely affect the leak locating capability of the sys tem More frequent checks may be required if the sensing cable is repeatedly exposed to leaks or if construction or repair work is done where the sensing cable may be exposed Contact your local Raychem TraceTek representat...

Page 18: ... 23 24 25 26 NC NO COM NC NO COM 27 28 29 30 31 32 4 20 mA Current Transmitter The TTDM adjusts its 4 20 mA output based on the leak detection status as detailed below Fault conditions Output mA Description 0 Electronic fault or loss of power 1 00 Fault communications between SI and UI boards 2 00 Fault cable break 3 00 Fault cable damage loop imbalance 3 50 Service Required alarm Normal condition...

Page 19: ...VLocation Leak current resistance location Sensing cable TTDM Current RLocation RS to S Red Green Yellow Black Red Green Yellow Black Relay wiring options The illustrations below show how relays 15 16 and 17 on foldout can be jumpered together to allow remote monitoring of the TTDM status with only a single pair of wires The TTDM de energizes its relays to signal an alarm condition Therefore loss ...

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