User guide

3 ELECTRICAL CONNECTIONS
14
OPTIFLEX 4300 C
www.krohne.com 02/2009 - 4000523601 - AD ATEX OPTIFLEX 4300 R01 en
3.5.2 Maximum intrinsically-safe values for the electrical circuit
Level transmitter without external sensor (output terminal 1 or 2)
• U
i
≤30 V
• I
i
≤300 mA
• P
i
≤1W
• C
i
=30 nF
• L
i
=0.2 mH
Level transmitter with external sensor: output terminal 1
• U
i
≤30 V
• I
i
≤300 mA
• P
i
≤1W
• C
i
=30 nF
• L
i
=0.2 mH
Level transmitter with external sensor: output terminal 2
• C
i
=0 nF
• L
i
=0 mH
3.5.3 Supply voltage
Level transmitter without external sensor
Level transmitter with external sensor
Current output terminal Minimum voltage at output
terminal [VDC]
Maximum voltage at output
terminal [VDC]
1 (U
S1
) 14 1 30 1
2 (U
S2
) 2 10 1 30 1
1 for a current output of 22 mA
2 use a second power supply. This power supply energizes current output terminal 2 only.
Current output terminal Minimum voltage at output
terminal [VDC]
Maximum voltage at output
terminal [VDC]
1 (U
S1
) 14 1 30 1
2 (U
S2
) 2
3 3
1 for a current output of 22 mA
2 use a second power supply. This power supply energizes current output terminal 2 only.
3 for more data, refer to the data sheet for the external sensor
AD_ATEX_OPTIFLEX4300_en_090528_4000523601_R01_D5D.book Page 14 Thursday, May 28, 2009 6:00 PM