The Raychem TraceTek TTDM leak-detection and location panel was the successor to the TTB-MA panel and was designed to operate and monitor the same range of sensing cables making it a direct replacement for a failed TTB-MA unit.
The TTDM could monitor 1500 Metres (5000 feet)of sensing cable, 3 times more than the TTB-MA. The TTDM could also be set to read in Metres, Feet or zones from it’s set up menu eliminating the need for seperate models, it also had an events history log along with 3 relays:
A 4-20mA transmitter was standard along with a RS232/485 serial port.
The panel was available in 3 variants:
The TraceTek TTDM-PLUS was introduced as a replacement/upgrade for the TTDM. Amongst it’s enhancements was the ability to monitor up to 31 external TTSIM-1 units via a dedicated RS-485 SIM network.
Each TTSIM-1 unit could monitor an additional 1500 Metres (5000 foot) length of sensor cable, providing total system capacity in excess of 48 km (150,000 feet).
The TTDM-PLUS was available in 2 varients:
TraceTek TTDM Data sheet (1996)
TraceTek TTDM-PLUS Data sheet (2001)
TraceTek TTDM-PLUS Data sheet (2003)