Dräger Polytron 3000 - ancb.it
Dräger Polytron 3000 - ancb.it
Dräger Polytron 3000 - ancb.it
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Start-up<br />
Start-up<br />
●<br />
Sw<strong>it</strong>ch on power supply.<br />
The transm<strong>it</strong>ter begins <strong>it</strong>s warm-up routine.This is indicated by a flashing display.<br />
The warm-up phase takes between 5 minutes and 12 hours, depending on the<br />
sensor installed. Note the information in the sensor data sheet. The warm-up<br />
phase may take longer in extremely high or low temperatures. It is completed<br />
when the display stops flashing.<br />
When the sensor has warmed up:<br />
— Transm<strong>it</strong>ters set for specific calibration w<strong>it</strong>h calibration gas<br />
● Calibrate sensor, page 14.<br />
— Transm<strong>it</strong>ters set for use of the manufacturer's calibration setting for the sensor<br />
● Transm<strong>it</strong>ter is ready for use.<br />
● Check signal transmission to the central un<strong>it</strong> and alarm output.<br />
Analogue signal<br />
— A current between 4 and 20 mA flows through the transm<strong>it</strong>ter during normal operation.<br />
This current is proportional to the gas concentration.<br />
— <strong>Polytron</strong> <strong>3000</strong> uses various current values to indicate the operating status of the<br />
transm<strong>it</strong>ter:<br />
Display (optional)<br />
Current<br />
Meaning<br />
4 mA Zero point<br />
20 mA Full-scale value<br />
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