K-Patents PR-03 - Manual (Page 107)

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10 PR-03 process refractometers in potentially explosive atmosphere 101
10 PR-03 process refractometers in potentially explosive
atmosphere
The PR-03 refractometer series can be used in locations with potentially explosive atmosphere with follow-
ing modifications, made by K-Patents Oy
. The refractometer sensor’s compliance with the Essential Health
and Safety Requirements are assured by complying with standard EN 50 021:1999.
The PR-03-...-AX refractometers have been certified by KEMA Quality B.V. under European ATEX direc-
tive 94/9/EC for ATEX EX II 3 G/Cenelec Eex nA IIC T4. The EX-Type Certificate Number is KEMA
04ATEX 1088X. The report number is KEMa No. 207 1534.
10.1 Equipment
The K-Patents refractometer system (Figure 10.1) for potentially explosive atmosphere locations consists of
a modified refractometer sensor PR-03-...-AX, a standard Indicating transmitter IT-R and a standard cable
PR-8300-...
Hazardous area
(up to Zone 2)
Safe Area
Figure 10.1 Refractometer system PR-03-...-AX