Page 114 February 2020 – TD 266 OPERATING MANUAL – ZPulse® DCS 4420/4830/4520/4930
The parameter reading in engineering units is shown as illustrated in
Figure 9-3. The reading updates according to the update interval.
Press Freeze to temporarily stop the update; press Start to restart the
monitoring (Start is the same button as Freeze).
Press Cancel to stop the monitoring.
The sensor readings should be according to the description in chapter
9.4.
9.6 RS-232/RS-422 applications
Connect the DCS to your PC using e.g. sensor cable 3855 (refer chapter 1.4.1). Use a RS-422/RS-232 converter
between the sensor and your PC if necessary.
Procedure for test of the ZPulse DCS sensor 4420/4830R/4520/4930R:
1. Connect power to the sensor.
2. Wake up the sensor.
3. Set the interval in seconds.
4. Set number of ping measurements.
5. Save the settings (this is only necessary if the sensor has to keep these settings after power up or reset).
6. Send Start command or Reset command.
Since the default interval is 0 and the default ping number is 0, the sensor outputs a ‘%’ on the next line before it
activates the sleep operation (lowest current consumption).
Send a character to wake up the sensor before setting the interval and the number of pings. The sensor outputs a
communication ready indicator, ‘!’, when wakened up.
Figure 9-3 Monitor sensor readings.
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