INTEC Controls | 12700 Stowe Drive, Suite 100, Poway, CA 92064 | Ph: (858) 578.7887 & (888) GO.INTEC | inteccontrols.com
Specifications subject to change without notice. | Tox_D_1119, Ex_D_1119, CO2_D_0320 | USA 200413 | Page 6 of 17
SC2-AT6 – UserManual
3 Electrical Connection
3.1 Plug Connection (SC2)
SC2 sensors are equipped with a reverse polarity protected connector (3-pin). It mustn’t be plugged in the wrong
position by force (already clamped at the factory).
All black plugs are connected in parallel, so it is irrelevant which plug to use.
3.2 Terminal Connection (AT6)
• Open cover.
• Insert field bus cable from above, cut and strip it.
• Connect it to the terminal (only 3-wire connection possible).
• For the 4-20 mA operating mode, please remove the built-in
500 ohm resistor between terminals 2 and 3.
4 Commissioning
Only
trained technicians
should perform the following when commissioning:
• Check for correct mounting location.
• Check if connection is correct.
• Check power voltage (for AT6).
• Install the Sensor Cartridge(s) if not already installed ex works.
• Check Sensor Cartridge connector for correct engagement.
• Calibration; note that new sensors are pre-calibrated at the factory.
Within the first weeks after commissioning, there may be a deviation in the sensor behavior. Required instruments for
commissioning (calibration):
• Service Tool STL6 or
• DPT6 kit (DGC6 EasyConf Software incl. USB/RS-485 adapter)
• Calibration Gases:
• For toxic and oxygen sensors
• Zero gas bottle with synthetic air (20% oxygen, 80% nitrogen)
• Span gas bottle of target gas in the range of 30-90% of the measuring range. Rest is synthetic air.
• For combustible sensors
• Zero gas bottle with synthetic air (20% oxygen, 80% nitrogen)
• Span gas bottle of target gas in the range of 30-70% of the measuring range. Rest is synthetic air.
• For infrared CO
2
sensors
• Zero gas bottle with pure nitrogen 5.0 for zero-point calibration
• Span gas bottle with CO
2
in the range of 30-90% of the measuring range. Rest is synthetic air.
• Extraction set consisting of gas pressure regulator and flow meter
• Calibration adapter with tube; CONKIT-PG2.
Sensor Unit
AT6
3 2 1
4-20 mA / 2-10 V
GND
+24 V