Table 23 HMT370EX series hazardous area classifications
Certification HMT370EX classification
IECEx
1)
/ ATEX
2)
II 1 G Ex ia IIC T4 Ga
II 1 D Ex ia IIIC T
200
85 °C Da
-40 °C ≤ T
amb
≤ +60 °C
MET (US/CAN) Class I, Zone 0, AEx ia IIC T4 Ga
Class II, Zone 20, AEx ia IIIC T 85°C Da
Class I, Division 1, Groups A, B, C, and D T4
Class II, Division 1, Groups E, F, and G T 85 °C
Ex ia IIC T4 Ga
Ex ia IIIC T 85 °C Da
1) International certification
2) EU certification
The personnel installing, operating, and maintaining HMT370EX
transmitters must have the required competencies for working in the hazardous
location, as defined by the applicable standards.
CAUTION!
For information on the standards that apply to using HMT370EX based on the classification of
the device, see HMT370EX certification documentation and the declarations of conformity
related to HMT370EX at www.vaisala.com/declarationofconformity.
Chapter 3 – HMT370EX regional safety certification information
51
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