How to choose a Radiodetection SuperCAT4+ and T1 transmitter
Start with what you need to trace. The standard SuperCAT4+ covers a wider range of active line frequencies, the S has more sonde choices and the CPS can trace a suitable signal from a cathodic protection system. A T1 adds an active signal when you need to apply one.
Choose the receiver for the work
Choose the standard SuperCAT4+ for a mix of metallic services and more active line frequencies. It also receives 640 Hz and 33 kHz sondes. Choose the SuperCAT4+ S when tracing water pipes, drains or ducts with a sonde. It adds 8 kHz Sonde mode, and its active line mode uses 33 kHz. Choose the SuperCAT4+ CPS for metallic pipelines with a detectable cathodic protection signal. The UK CPS version also supports 640 Hz, 8 kHz and 33 kHz Active Line modes.
Choose a T1 and the right application method
The T1-640 covers the three matching active line frequencies for the standard and CPS receivers. With the S, use the transmitter’s 33 kHz output for active tracing. Pair the T1-640/65 with the standard receiver when you need its 65 kHz option. Use the T1-131 with the standard receiver when a suitable higher-impedance service calls for 131 kHz by direct connection.
Sonde mode and Active Line mode do different jobs
A sonde transmits from inside a pipe or duct. A T1 applies a signal to a conductive line or tracing rod. The S can locate a 640 Hz sonde, while its Active Line mode receives 33 kHz. To follow the route of a non-metallic pipe with a continuous signal, use the T1-640 at 33 kHz with a compatible FlexiTrace rod.
For a point signal in a larger non-metallic drain, see the 33 kHz sewer sonde. Choose a suitable pushrod and a receiver with 33 kHz Sonde mode.
What to order
The three receiver listings each contain one locator, with metric or imperial depth display selected at purchase. The T1 listings include the matching transmitter, direct connection lead, earth stake, earth lead and magnet. Decide which active line frequencies you need before choosing a transmitter.
Plan the work before digging
A locator reading is one piece of evidence. Use service plans and a safe system of work, and establish the position of services before excavation. Follow HSG47 guidance. For general utility avoidance equipment, compare the CAT and Genny range.