by ETI Staff | Oct 31, 2017 | FPT 130 FAQs, GPT 130 FAQs, GPT 230 FAQs, Troubleshooting
Due to the high sensitivity of ground-fault-current detection circuits, it is possible that excessive line noise on the power source wiring can cause an alarm. This can occur in the form of a ground-fault alarm, a stuck-relay alarm, or a ground-fault circuit alarm....
by ETI Staff | Aug 8, 2017 | Featured
This past July Environmental Technology released its new line of microprocessor-based heat-trace controls, replacing its already successful SST line which has been a trusted industry standard since 2011. The new GPT and FPT heat-trace controls were created with input...
by ETI Staff | Aug 2, 2017 | GPT 130 FAQs, GPT 230 FAQs, Troubleshooting
The GPT unit comes with a thermistor (two thermistors with the GPT 230) but is also compatible a 2-, 3-, or 4-wire RTD sensor. The diagram illustrates the correct wiring and DIP switch configuration for each temperature sensor wiring scheme. It is important that you...
by ETI Staff | Jul 26, 2017 | APS-C Series FAQs
The difference is the step down transformer that provides the power for the internal circuitry. On the 277 single phase the transformer is 277 VAC to 24 VAC and you will note that its primary winding is connected to the top and middle poles on the contactor. On the...
by ETI Staff | Jul 26, 2017 | APS-C Series FAQs
The APS-C series systems are designed to turn on and off, as the weather requires heat to deal with snow or icing conditions. Although a thermostatic dry contact switch can be used to override the system on for temperature only, is not recommended since it will reduce...
