Emerson 644 Instruction Manual download pdf (Page 27)

Quick Start Guide

February 2015

When Options select Enhanced Performance

Terminals of power supply (+, -)

Terminals of sensor (1,2,3,4)

3. This product complies to the requirements for FISCO field devices specified in

IEC60079–27: 2008. For the connection of an intrinsically safe circuit in accordance

FISCO model, FISCO parameters of this product are as above.

4. The product should be used with Ex-certified associated apparatus to establish

explosion protection system that can be used in explosive gas atmospheres. Wiring

and terminals should comply with the instruction manual of the product and

associated apparatus.

5. The cables between this product and associated apparatus should be shielded

cables (the cables must have insulated shield). The shielded has to be grounded

reliably in non-hazardous area.

6. End users are not permitted to change any components insides, but to settle the

problem in conjunction with manufacturer to avoid damage to the product.

7. During installation, use and maintenance of this product, observe the following

standards:

GB3836.13-1997 “Electrical apparatus for explosive gas atmospheres Part 13:

Repair and overhaul for apparatus used in explosive gas atmospheres”

GB3836.15-2000 “Electrical apparatus for explosive gas atmospheres Part 15:

Electrical installations in hazardous area (other than mines)”

GB3836.16-2006 “Electrical apparatus for explosive gas atmospheres Part 16:

Inspection and maintenance of electrical installation (other than mines)”

GB50257-1996 “Code for construction and acceptance of electric device for

explosion atmospheres and fire hazard electrical equipment installation

engineering”

Maximum input

voltage:

(V)

Maximum

input current:

(mA)

Maximum

input power:

(W)

Maximum internal

parameters:

(nF) L

(mH)

150 (T

≤ +80 °C)

0.67 / 0.8 3.3 0170 (T

≤ +70 °C)

190 (T

≤ +60 °C)

Maximum

output voltage:

(V)

Maximum

output current:

(mA)

Maximum

output power:

(W)

Gas

group

Maximum internal

parameters:

(nF) L

(mH)

13.6 80 0.08

IIC 0.816 5.79

IIB 5.196 23.4

IIA 18.596 48.06

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Emerson 644 Instruction Manual Page 27

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