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Intrinsic Safety Barriers Suitable for Use With Delta Controls Pressure and Level Transmitters

Delta Controls pressure transmitters are intrinsically safe when used with suitable safety barriers. Barriers to a safe area are suitable if the entity parameters are selected so that:

  • 13v < Vmax < 35v
  • 20mA < Imax < 180mA
  • Ca > .03uF+Ccable
  • La > Lcable

In addition, the internal resistance must be selected so that at 20mA, the voltage dropped across the load resistance plus the internal resistance must be less than (Vsupply-13v)

The following are some of the safety barriers that are suitable for use with Delta Controls pressure transmitters:

MANUFACTURER: STAHL
PART NUMBERRATED VOLTAGEINTERNAL RESISTANCEALLOWABLE LOAD RESISTANCE AT RATED VOLTAGEI.S. CONNECTION FOR CL I,II,III, GROUPS:
9001/01-199-150-101616010A-G
9001/01-280-075-1024440110A-G
9001/01-280-085-1024356194A-G
9001/01-280-100-1024302248A-G
9001/01-280-110-1024277273A-G
9001/01-199-165-1024187363C-G
MANUFACTURER: CROUSE-HINDS
PART NUMBERRATED VOLTAGEINTERNAL RESISTANCEALLOWABLE LOAD RESISTANCE AT RATED VOLTAGEI.S. CONNECTION FOR CL I,II,III, GROUPS:
SB19130 M 18011823020A-G
SB19130 M 240124440110A-G
SB19130 M 24022453515A-G
MANUFACTURER: ADALET
PART NUMBERRATED VOLTAGEINTERNAL RESISTANCEALLOWABLE LOAD RESISTANCE AT RATED VOLTAGEI.S. CONNECTION FOR CL I,II,III, GROUPS:
Z 125/Ex22202133A-G
Z 129/Ex28367258A-G
Z 123/Ex-CL20178+2V72A-G
Z 129/Ex-CL28382+2V268A-G
Delta Controls Corporation

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