4
1. Introduction
We greatly appreciate for your purchase of the CAS Explosion proof indicator.
These goods have hold excellent performance and splendid properties through strike tests as
well as devoting ourselves under severe quality management.
The EXP-2000A indicator is specially designed not to transmit the internal flame to external
area even if a internal explosion occurs in explosive environment, and is shaped firmly and
delicately designed to coincide with the requirements of severe industrial field.
Before using EXP-2000A, It is recommended to read this manual carefully and to apply the
function application fully.
2. Explosion Structure & Class (Ex d B T4)
Ⅱ
Section Description
Marking
Type of protection
Flameproof enclosure
Ex d
Apparatus Group
Surface Industries
B
Ⅱ
Temperature Class
Max. surface temperature 135
℃
T4
Explosion
Class
T1 T2
T3
T4
Class 1
(USE)
Acetone, Ammonium,
Carbon Monoxide,
Titan, Acetic Acid,
Ethyl Acetate, Toluene,
Propane, Benzene,
Methanol, Methane
Ethanol,
Buanol,
Butane,
Acetic
Anhydridede
Gasoline,
Hexane
Acetaldehyde,
Ethyl Ether
Class 2
(USE)
Cool Gas
Ethylene Oxide
Class 3
(Don't use)
Water Gas Hydrogen
Acetylene
( Be able to use EXP-2000A only in the inside thick line)