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Delta Controls pressure transmitters are intrinsically safe when used with suitable safety barriers. Barriers are suitable if the entity parameters are selected so that:
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 Model 872
(Bold selections are the most commonly specified.)
|
MANUFACTURER: STAHL |
||||
|
PART NUMBER |
RATED VOLTAGE |
INTERNAL RESISTANCE |
ALLOWABLE LOAD RESISTANCE AT RATED VOLTAGE |
I.S. CONNECTION FOR CL I,II,III, GROUPS: |
|
9001/01-199-150-10 |
16 |
160 |
10 |
A-G |
|
9001/01-280-075-10 |
24 |
440 |
110 |
A-G |
|
9001/01-280-085-10 |
24 |
356 |
194 |
A-G |
|
9001/01-280-100-10 |
24 |
302 |
248 |
A-G |
|
9001/01-280-110-10 |
24 |
277 |
273 |
A-G |
|
9001/01-199-165-10 |
24 |
187 |
363 |
C-G |
|
MANUFACTURER: CROUSE-HINDS |
||||
|
PART NUMBER |
RATED VOLTAGE |
INTERNAL RESISTANCE |
ALLOWABLE LOAD RESISTANCE AT RATED VOLTAGE |
I.S. CONNECTION FOR CL I,II,III, GROUPS: |
|
SB19130 M 1801 |
18 |
230 |
20 |
A-G |
|
SB19130 M 2401 |
24 |
440 |
110 |
A-G |
|
SB19130 M 2402 |
24 |
535 |
15 |
A-G |
|
MANUFACTURER: ADALET |
||||
|
PART NUMBER |
RATED VOLTAGE |
INTERNAL RESISTANCE |
ALLOWABLE LOAD RESISTANCE AT RATED VOLTAGE |
I.S. CONNECTION FOR CL I,II,III, GROUPS: |
|
Z 125/Ex |
22 |
202 |
133 |
A-G |
|
Z 129/Ex |
28 |
367 |
258 |
A-G |
|
Z 123/Ex-CL |
20 |
178+2V |
72 |
A-G |
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