Ashcroft A4 - Pressure Transmitter - Manual (Page 3)

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All sales subject to standard terms and conditions of sale. I&M011-10166-A4. Rev. 12/12
HAZARDOUS (CLASSIFIED) AREA
CLASS I, DIVISION 1 & 2,
GROUPS A, B, C, & D;
CLASS II, DIVISION 1 & 2,
GROUPS E, F & G, CLASS III
NON-HAZARDOUS
(UNCLASSIFIED) AREA
BARRIER
BARRIER
V+
V–
MODEL A2X & A4 SERIES
4-20MA TRANSMITTER
R LOAD
250 OHM
TYP.
R LOAD
250 OHM
TYP.
MODEL A2X & A4 SERIES
4-20MA TRANSMITTER
V+
V–
+24 VDC TYP.
+
–24 VDC TYP.
–
V OUT
(1-5 V TYP.)
V OUT
(1-5 V TYP.)
4.4 CSA INSTALLATION GUIDELINES
INSTALLATION NOTES:
Vmax 30VDC
Imax 100mA
Ci = 0.053uF
Li = 0.364uH
1. THE INTRINSIC SAFETY ENTITY CONCEPT ALLOWS THE INTER-
CONNECTION OF TWO INTRINSICALLY SAFE DEVICES CSA CER-
TIFIED WITH ENTITY PARAMETERS NOT SPECIFICALLY EXAM-
INED IN COMBINATION AS A SYSTEM WHEN: Uo OR Voc Vmax,
Io OR Isc Imax, Ca OR Co Ci + Ccable, La OR Lo Li +Lcable, Po
Pi.
2. THE NONINCENDIVE FIELD WIRING CONCEPT ALLOWS INTER-
CONNECTION OF NONINCENDING FIELD WIRING APPARATUS
WITH ASSOCIATED NONINCENDIVE FIELD APPARATUS USING
ANY OF THE WIRING METHODS PERMITTED FOR NON3HAZ-
ARDOUS (UNCLASSIFIED) LOCATIONS WHEN:
Uo OR Voc Vmax, Io OR Isc Imax,
Ca OR Co + Ccable, La OR Lo Li +Lcable, Po Pi.
3. FOR DIVISION 1 INSTALLATIONS, THE CONFIGURATION OF
ASSOCIATED APPARATUS SHALL BE CSA CERTIFIED UNDER
ENTITY CONCEPT.
4. FOR DIVISION 2 INSTALLATIONS USING NONINCENDIVE FIELD
WIRING CONCEPTS THE ASSOCIATED APPARATUS SHALL BE
CSA CERTIFIED UNDER THE ENTITY CONCEPT OR NONINCEN-
DIVE FIELD WIRING CONCEPT.
5. FOR DIVISION 2 INSTALLATIONS THE ASSOCIATED APPARATUS
IS NOT REQUIRED TO BE CSA CERTIFIED UNDER ENTITY CON-
CEPT OR NONINCENDIVE FIELD WIRING CONCEPT IF THEA2X
(4-20mA) & A4 SERIES PRESSURE TRANSDUCER IS INSTALLED
IN ACCORDANCE WITH THE CANADIAN ELECTRICAL CODE (CEC,
CAN/CSA3C22.1) FOR DIVISION 2 WIRING METHODS EXCLUD-
ING NONINCENDIVE FIELD WIRING.
6. CONTROL EQUIPMENT CONNECTED TO THE ASSOCIATED APPA-
RATUS SHALL NOT USE OR GENERATE MORE THAN 250VRMS
OR VDC.
7. ASSOCIATED APPARATUS MANUFACTURERS INSTALLATION
DRAWING SHALL BE FOLLOWED WHEN INSTALLING THIS
EQUIPMENT.
8. RUN SHIELDED INTERCONNECTION CABLE WITH SHIELD CON-
NECTED TO FM APPROVED ASSOCIATED APPARATUS GROUND.
9. WARNING – SUBSTITUTION OF COMPONENETS MAY IMPAIR
INTRINSIC SAFETY
10. WARNING – TO PREVENT IGNITION OF FLAMMABLE OR COM-
BUSTIBLE ATMOSPHERES, DISCONNECT POWER BEFORE
SERVICING.
INSTALLATION FOR CSA
INTRINSICALLY SAFE CLASS 1, GROUPS A, B, C & D &
CLASS ll, GROUPS E, F & G &
CLASS llI