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SIZE
DWG NO.
REV
TYPE
This document contains information proprietary to
Rosemount Analytical, and is not to be made available
to those who may compete with Rosemount Analytical.
D
08-94
C
B
A
D
C
A
B
D
1
2
34
5
6
78
1
2
3
4
5
6
7
8
1400288
A
1400288
SHEET 2 OF 2
SCALE: NONE
NOTES: UNLESS OTHERWISE SPECIFIED
SUPPLY / SIGNAL TERMINALS TB 1-15, 16
Imax (mA)
Pmax (W)
Ci (nF)
Li (mH)
5.32
TABLE III
5081-P-FI ENTITY PARAMETERS
Vmax (Vdc)
MODEL NO.
5081-P-FI
27.8
0
17.5
380
10. CONTROL EQUIPMENT CONNECTED TO ASSOCIATED APPARATUS MUST NOT USE OR GENERATE
MORE THAN 250 Vrms OR Vdc.
6. DUST-TIGHT CONDUIT SEAL MUST BE USED WHEN INSTALLED IN CLASS II AND CLASS III ENVIRONMENTS.
11. THE ASSOCIATED APPARATUS MUST BE CSA APPROVED.
12. NO REVISION TO DRAWING WITHOUT PRIOR CSA APPROVAL.
7. RESISTANCE BETWEEN INTRINSICALLY SAFE GROUND AND EARTH GROUND MUST BE LESS THAN 1.0 Ohm.
2. INTRINSICALLY SAFE APPARATUS (MODEL 5081-A-FI, FIELDBUS TERMINATOR AND ANY ADDITIONAL
FIELDBUS DEVICES) AND ASSOCIATED APPARATUS (SAFETY BARRIER) SHALL MEET THE FOLLOWING
REQUIREMENTS: THE VOLTAGE (Vmax) AND CURRENT (Imax) OF THE INTRINSICALLY SAFE APPARATUS
MUST BE EQUAL TO OR GREATER THAN THE VOLTAGE (Voc OR Vt) AND CURRENT (Isc OR It) WHICH
CAN BE DELIVERED BY THE ASSOCIATED APPARATUS (SAFETY BARRIER). IN ADDITION, THE MAXIMUM
UNPROTECTED CAPACITANCE (Ci) AND INDUCTANCE (Li) OF THE INTRINSICALLY SAFE APPARATUS,
INCLUDING INTERCONNECTING WIRING, MUST BE EQUAL OR LESS THAN THE CAPACITANCE (Ca) AND
INDUCTANCE (La) WHICH CAN BE SAFELY CONNECTED TO THE APPARATUS. (REF. TABLE III).
WHERE Ca Ci (SENSOR) + Ccable;
La Li (SENSOR) + Lcable.
1. THE MODEL 5081-A-FI TRANSMITTER INCLUDES INTEGRAL PREAMPLIFIER CIRCUITRY. AN EXTERNAL PREAMPLIFIER
MAY BE ALSO USED. THE OUTPUT PARAMETERS SPECIFIED IN TABLE II ARE VALID FOR EITHER PREAMPLIFIER.
9. ASSOCIATED APPARATUS MANUFACTURER'S INSTALLATION DRAWING MUST BE FOLLOWED
WHEN INSTALLING THIS EQUIPMENT.
THE CAPACITANCE AND INDUCTANCE OF THE LOAD CONNECTED TO THE SENSOR TERMINALS MUST NOT EXCEED
THE VALUES SPECIFIED IN TABLE I
3. PREAMPLIFIER TYPE 23546-00, 23538-00 OR 23561-00 MAY BE UTILIZED INSTEAD OF THE MODEL 5081-A-FI TRANSMITTER
INTEGRAL PREAMPLIFIER CIRCUIRTY. A WEATHER RESISTANT ENCLOSURE MUST HOUSE THE TYPE 23546-00 REMOTE PREAMPLIFIER.
5. SENSORS WITHOUT PREAMPS SHALL MEET THE REQUIREMENTS OF SIMPLE APPARATUS AS DEFINED IN ANSI/ISA RP12.6
AND THE CEC (CSA C22.1). THEY CAN NOT GENERATE NOR STORE MORE THAN 1.5V, 0.1A, 25mW, AND 20uJ.
SEE TABLES I AND II.
4. INSTALLATION SHOULD BE IN ACCORDANCE WITH ANSI/ISA RP12.06.01 "INSTALLATION OF
INTRINSICALLY SAFE SYSTEMS FOR HAZARDOUS (CLASSIFIED) LOCATIONS" AND THE CANADIAN
ELECTRICAL CODE (CSA C22.1).
Ca, Ct OR Co
La, Lt OR Lo
WITH ASSOCIATED APPARATUS WHEN THE FOLLOWING IS TRUE:
FIELD DEVICE INPUT ASSOCIATED APPARATUS OUTPUT
Vmax OR Ui
Imax OR Ii
Pmax OR Pi
Ci+ Ccable;
Li+ Lcable.
8. THE ENTITY CONCEPT ALLOWS INTERCONNECTION OF INTRINSICALLY SAFE APPARATUS
Po;
Isc, It OR Io;
Voc, Vt OR Uo;
OUTPUT
PARAMETERS
It
Vt
TABLE II
MODEL 5081-P-FF
TB1-1 THRU 12
Pt
13.02 Vdc
105.64 mA
147 mW
A, B
0.96
5.99
3.1
12.3
TABLE I
D
C
Ca
(uF)
La
(mH)
21.69 25
OUTPUT PARAMETERS
GAS
GROUPS