Armored flameproof thermocouple, thermal resistance tested qualified by national Instrument and meter explosion-proof safety supervision and inspection station and issued the certification of explosion-proof series of products.
Its protective tube and measurement component can be quickly separated structure. can be non-stop repair, The various materials of protective tubes can meet the measurement needs for high pressure, high temperature and strong corrosive media measurement.
Using armored measuring components, temperature armored components and protective tube bottom use spring compression, fast thermal response and also shock-proof, stable and reliable.
It uses aluminum explosion-proof junction box, with Exd Ⅱ BT1 ~ 5, Exd Ⅱ CT1 ~ 6 explosion-proof grade products, can apply to different levels of explosion-proof requirements of temperature measurement.
1) temperature and tolerance
Type | Graduation | material
| measuring range ℃ | Level and tolerance |
Armoured elements | Protection tube | Ⅰ | Ⅱ |
Ni-Cr – Ni-Si | K | 06Cr18Ni11Ti | 06Cr18Ni11Ti | -40～800 | ±1.5 or ±0.4%∣t∣ | ±2.5 or ±0.75%∣t∣ |
GH30Alloy | 1Cr25Ni20 | 0～1000 |
GH30Alloy | 0～1100 |
3YC-52Alloy | 0～1200 |
Ni-Cr – Cu-Ni | E | 06Cr18Ni11Ti | 06Cr18Ni11 Ti | Single：0～650 Double branch：0～550 |
Fe – CuNi | J | Single：0～600Double branch：0～540 |
Cu – CuNi | T | -200～350 | ±0.5 or±0.4%∣t∣ | ±1 or ±0.75%∣t∣ |
Pt Resistor | Pt100 | 06Cr18Ni11Ti | 06Cr18Ni11Ti | -200～420 | A | ±（0.15+0.002∣t∣） |
0～500 | B | ±（0.30+0.005∣t∣） |
3YC-52Alloy | 0～650 |
Cu Resistor | Cu50 or Cu100 | 06Cr18Ni11Ti | -50～100 | —— | ±（0.30+0.006∣t∣） |
2) fixing device and insertion depth
Fixed device form | Protection tube | Nominal pressure MPa | Insertion depth Mm |
type | End form |
Fixed thread taper pipe |
The overall drilling tube
|
taper
| 30 | 150～1000 |
75～1000 |
Fixed thread taper pipe | Depending on flange form | 150～1000 |
75～1000 |
Fixed screw thread |
The overall drilling tube
| Straight | 10 | 150～1000 |
φ16 welded pipe
| Straight | 150～2000 |
Reduced type
|
Fixed flange | Whole bore pipe | Straight | Depending on flange form | 150～1000 |
φ16 welded pipe | Straight | 150～2000 |
Reduced type
|
Non fixing device Movable flange
|
The overall drilling tube
| Straight | Normal Pressure | 150～2000 |
Reduced type
|
Note: 1, when the fixed-threaded tapered tube is equal to or below 250, can be used for medium which flow rate is 80m / s
2, The overall drilling tube insertion depth, within the allowable range, can be arbitrarily selected by the user.
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