Echotel® Model 355 is a loop-powered, non-contact-type ultrasonic transmitter that performs liquid level, volume or open channel flow measurement. HART® communications are offered with a PACTware™ PC program for remote configuration and troubleshooting.
The level measurement is made by emitting an ultrasonic pulse from the transducer, then measuring the time required for the echo to reflect from the liquid surface and return to the transducer. The powerful electronics measure the time of the round trip pulse and, by knowing the speed of sound, calculate the distance. Since speed of sound is temperature dependent, the transducer also measures the temperature in the vessel to provide compensation for changing temperature.
| ATEX | Ex d, Ex ia |
|---|---|
| CCOE | Ex ia |
| cFMus | IS, NI |
| Inmetro | Ex d, Ex ia |
| SIL | SIL 1 (1oo1) |
Other approvals are available.
Ultrasonic pulses are emitted from the transducer, and the time required for the echo to reflect from the liquid surface and return to the transducer is measured.
| ATEX | Ex d, Ex ia |
|---|---|
| CCOE | Ex ia |
| cFMus | IS, NI |
| Inmetro | Ex d, Ex ia |
| SIL | SIL 1 (1oo1) |
Other approvals are available.
Ultrasonic pulses are emitted from the transducer, and the time required for the echo to reflect from the liquid surface and return to the transducer is measured.