zws ultrasonic sensors

The miniature sensor housing

of the zws-15 has a dimensions of 20 mm x 32 mm x 12 mm. The housing’s design and mounting is compatible with many optical sensors. This facilitates the conversion to ultrasonic sensors for critical applications.

For the zws sensor range

2 output versions and 3 detection ranges are available:

	1 switching output, optionally in pnp or npn circuitry
	1 analogue output 4–20 mA or 0–10 V

The Teach-in button

on the top facilitates the convenient setting of the sensor.

Two LEDs

in the sensor housing’s upper half indicate the switched output and respectively the analogue output states.

The zws sensors with switched output have three operating modes:

• Single switching point
• Two-way reflective barrier
• Window mode

Teach-in of a single switching point

by positioning the object to be detected within the desired distance (1) to the sensor, pressing the button for approx. 3 seconds and then pressing it once more for approx. 1 second. Ready.

Teach-in of a switching point

Teach-in of a two-way reflective barrier

with a fixed reflector can be set up with the help of a permanently mounted reflector by mounting the zws sensor and the reflector, then pressing the button for approx.

3 seconds and then pressing it once more for approx. 10 seconds. Now, the two-way reflective barrier has been set.

Teach-in of a two-way reflective barrier

Set the analogue output

by initially positioning the object to be detected on the sensor-close window limit (1), pressing the button for approx. 3 seconds, shifting the object to the sensor-distant window limit (2) and pressing the button once more for approx. 1 second. Ready.

Teach-in of an analogue characteristic or of a window with two switching points

To set a window

with two detection points on a single switched output, the procedure is the same as setting the analogue.

NCC/NOC

and rising/falling analogue characteristic curve can also be set using the push-button.

The control input on pin 2

can be used to synchronise multiple zws sensors with each other. The SyncBox2 , which is available as an accessory, generates a synchronisation signal output on pin 2. This permits up to 50 zws sensors to be autonomously synchronised.

Synchronisation of up to 50 zws sensors

The temperature compensation of the analogue sensors

profits from a significant improvement. The sensors reach their operating point only 45 seconds after activation of the operating voltage.

Brings on intensively bundled sound field directly to the measuring point

The SoundPipe zws1 (Accessories) can be used with any zws-15 or zws-7 sensor. It directs sound to the measuring point thus allowing measurements to be taken in drill holes and openings with diameters under 5 mm.

Measurement can be carried out directly before the sound exit opening, since the blind zone is inside the SoundPipe.

The SoundPipe zws1 is attached to the front of the zws-15 or zws-7 sensor.

A typical field of application is measuring levels in microplate wells which are used in medical analysis technology. The SoundPipe zws1 can be directly placed over the opening; this makes exact positioning that much easier. The attachment can also be used in scanning gaps of only a few millimetres in width between two objects.

The zws sensors are ideal for probing of circuit boards and wafers in the electronic industry or for use in packaging machines in which high-transparency films must be detected.

With the SoundPipe, the zws-15 sensor can measure fill levels in the smallest of openings.

The SoundPipe is directly positioned over the measuring point.