Emerson Rosemount 644 - Certification Combinations

2. Non-metallic enclosures must have a surface resistance of
less than 1 GΩ; light alloy or zirconium enclosures must be
protected from impact and friction when installed in a zone 0
environment.
5.12 Korea
5.12.1 EP Korea Flameproof and Dust-Ignitionproof
Certificate:
22-KA4BO-0070X, 22-KA4BO-0071X, 22-KA4BO-0076X,
22-KA4BO-0077X
Markings:
Ex db IIC T6…T1 Gb; T6(-60 °C ≤ T
a
≤ +70 °C), T5…T1(-60
°C ≤ T
a
≤ +80 °C);
Ex tb IIIC T130 °C Db; (-60 °C ≤ T
a
≤ +80 °C)
Special Condition for Safe Use (X):
See certificate for special conditions for safe use.
5.12.2 IP Korea Intrinsic Safety
Certificate:
13-KB4BO-0531X
Markings:
Ex ia IIC T6…T4 Ga
Special Condition for Safe Use (X):
See certificate for special conditions for safe use.
5.13
Combinations
K1
Combination of E1, I1, N1, and ND
K2
Combination of E2 and I2
K5
Combination of E5 and I5
K7
Combination of E7, I7, N7, and NK
KA
Combination of K6, E1, and I1
KB
Combination of K5 and K6
KC
Combination of I5 and I6
KD
Combination of E5, I5, K6, E1, and I1
KP
Combination of EP and IP
Quick Start Guide April2023
40 Rosemount 644