Chapter 5
16
5 PUTTING INTO OPERATION
5.1 SEBAPuls with analog output
▪ Perform wiring according to the scheme in chapter 4.5.1
The DC/DC converter should be mounted close to the data logger – not close to the radar sensor.
▪ The connection clamps of the DC/DC converter are screw-less. Press a small screwdriver into the
small opening. Then insert the wire to be connected and remove the screwdriver. Proceed with
each contact of the connector. The wire may be used with core sleeve at its end or simply
insulation-stripped
▪ Connect the grounding screw (not applicable for SEBAPuls 8 / 15) at the bottom of the sensor
housing to a proper grounding next to the sensor with a wire of at least 4 mm².
▪ The instrument is switched on by applying operation voltage. The first valid measured value
depends on the lead time of the sensor (hence on sensor type):
Lead times:
SEBAPuls 8: 55 seconds
SEBAPuls 15: 55 seconds
SEBAPuls 20: 55 seconds
SEBAPuls 120: 55 seconds
▪ During the initialization, resp. if no echo is recognized; there is a 22mA fault current signal or a
2.2V fault voltage signal.
5.2 SEBAPuls with SDI-12 output
▪ Perform wiring of SEBAPuls 8 / 15 according to the scheme in chapter 4.6.3 and for the types
SEBAPuls 20 / 120 according to the scheme in chapter 4.6.4.
▪ The connection clamps of the SDI-12 converter of SEBAPuls 8 / 15 are with screws. Open the screw
of the respective clamp. Insert the wire to be connected and tighten the screw again. Proceed
with each contact of the connector. The wire may be used with core sleeve at its end or simply
insulation-stripped.
▪ Connect the grounding screw (not applicable for SEBAPuls 8 / 15) at the bottom of the sensor
housing to a proper grounding next to the sensor with a wire of at least 4 mm².
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