942

inductance

[Applications] Ultrasonic precision proximity sensing circuit

The circuit distance is 150mm ~ 6000mm, the acoustic wave emission angle is 5.9 ° ~ 236 °, the working voltage is 19V ~ 30V, the output form: 0V ~ 10V or 4mA ~ 20mA, binary / hexadecimal digital RS232 or RS485 programmable, repeat The accuracy is ±1mm or ±0.2% of the measured distance.

Has the following four features:

1 Background suppression function: only detects the target within the set distance, but is not sensitive to the background material behind the measured object.

2 high frequency carrier function: the working frequency is 130-300 kHz. Far from the frequency of noise in typical industrial environments, 40 – 50 kHz, it can withstand the interference noise generated by air and sound in the environment.

3 Temperature compensation function: It can automatically compensate according to the change of ambient air temperature. The internal time delay compensates the temperature change circuit to continuously adjust the set point of the sensor. The adjustment range is ±0.2%-±o.5%, corresponding to The compensation temperature is 0-50 °C.

4 resistance / synchronization signal setting function: used to control the working mode of the sensor. When the blocking/synchronizing function line is grounded, the sensor operates in a blocking mode so that when two or more sensors are mounted closer together, acoustic interference may occur. Multiple sensors can be blocked at this point to ensure that only one sensor emits sound waves at a particular time. In addition, the blocking lines of all sensors can be connected together so that the sensors simultaneously emit sound waves at the same time.

[Substitution interchange compatible]

[942 original (Chinese) data sheet (Datasheet) package PDF]