According to the latest proof standard GB3836 design conforms to the international IEC standard, proof mark D II BT6, suitable for the second level below B, temperature groups T1 ~ T6, temperature measurement with explosive gas places.
Technical Characteristics and Specifications of Common Flameproof Thermal Resistance/Thermocouple for Temperature Transmitter
This series of Common Flameproof Thermal Resistance/Thermocouple in line with national standards GB3836.1, GB3836.2, according to the relevant provisions of the explosion-proof standards and requirements of the design and manufacture, the performance indicators in line with GB/T16839.
The provisions of the 1, GB/T16839.2, JB/T9238, JB/T8622, JB/T8623 standards, and by the National Instruments explosion-proof safety supervision and inspection station approval, obtain explosion-proof certificate.
User note temperature groups must be on-site surface temperature and install the corresponding in the selection of explosion-proof level.
Varieties, measuring range and tolerance
|
variety |
Division No. |
Resistance value |
Protection tube material |
measuring range
|
Allowance error |
Depth of immersion |
|
|
grade |
formula |
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|
Platinum resistance
|
Pt100 |
100±0.06 100±0.12 |
1Cr18Ni9Ti |
200~550 |
A |
±(0.15+0.2%|t|) |
75,100,150, 200,250,300, 400,500,600, 750,1000
|
|
B |
±(0.3+0.5%|t|) |
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|
Copper resistance
|
Cu50 Cu100 |
50±0.06 100±0.12 |
50~100 |
|
±(0.3+0.6%|t|)±(0.3+0.6%|t|) |
||
Thermocouple
|
variety |
Division No. |
Protection tube material |
measuring range |
the material level and the allowed value |
Depth of immersion |
|
|
Ⅰ |
Ⅱ |
|||||
|
Chromium - nickel silicon |
X |
1Cr18Ni9Ti |
40~850 |
±1.5℃ / ±0.4%|t|
|
±0.5℃ / ±0.4%|t|
|
150、 200 250、 300 400、 500 600、 750 1000、1250 1500、2000
|
|
Nickel chrome silicon - nickel silicon |
N |
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|
Nickel-chromium - Kang Tong |
E |
Single 40~650 Double-40~550
|
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|
Iron - Kang Tong |
J |
Single 40~600 Double-40~450
|
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|
Copper - Kang Tong |
T |
Single 40~400 Double-40~300
|
±0.5℃ / ±0.4%|t|
|
±1℃ / ±0.75%|t
|
||
|
Class And Level
|
Ignition temperature (c) and group
|
|||||
|
T1 |
T2 |
T3 |
T4 |
T5 |
T6 |
|
|
T＞450 |
450≥T＞300 |
300≥T＞200 |
200≥T＞135 |
135≥T＞100 |
100≥T＞85 |
|
|
ⅡA |
Ethane, propane, acetone, styrene,two chlorobenzene,Toluene, benzene, ammonia,Carbon monoxide, xylene, acetic acid
|
Ethanol, propylene, butane, butanol, butyl acetate, methanol, ethylene chloride |
Pentane, hexane, heptane, octane, decane, cyclohexane, gasoline,
|
acetaldehyde |
|
Nitrous acid ethyl ester |
|
ⅡB |
Coke oven gas, cyclopropane
|
Ethylene oxide, ethylene,1, 3 butadiene
|
Hydrogen sulfide |
Ethylic ether |
|
|
|
ⅡC |
Water gas, hydrogen
|
acetylene |
|
|
Carbon disulfide |
Nitric acid ethyl ester |
