National united designed product, connection dimension can be in common use , and good interchangeability. Waterproof aluminum junction box,with assembly-type structure, the measuring element adopts porcelain beads insulation .In case of vibration, the thermocouple is still not easy to break. Component decomposition is easy to repair, replace conveniently, Cheap price brings low cost on replacing expendables. Temperature measurement components in contact with the air, after long-term use of a certain degree of change in the indexing characteristics.
技术参数
1）Measuring range and tolerance
●Thermocouple
Type
Graduation
Protection tube
measuring range
℃
Grade and tolerance
diameter
Material
Ⅰ
Ⅱ
Nickel - chromium nickel - silicon
N
φ16
06Cr18Ni11Ti
-40～950
±1.5℃
or
±0.4%t
±2.5℃
or
±0.75%t
1Cr25Ni20
Cr25Ti
0～1000
GH3030
0～1100
Nicr-Nisi
K
0R1300
K1230
0～1300
φ16
φ20
3YC-52
0～1200
High alumina ceramic tube
0～1300
Nickel - chromium
E
φ16
06Cr18Ni11Ti
-40～900
Fe-Cuni
J
-40～750
Cu-Cuni
T
φ16
06Cr18Ni11Ti
-40～350
±0.5℃
or
±0.4%t
±1℃
or
±0.75%t
Ptrh10-Pt
S
φ16
φ20
φ25
High alumina ceramic tube
Corundum ceramic tube
0～1300
±1℃
or
±[1+0.003t-1100）]
±1.5℃
or
±0.25%t
Ptrh13-Pt
R
Ptrh30-Pt6
B
Corundum ceramic tube
0～1600
——
●Thermal resisitance
Type
Graduation
Protection tube
measuring range
℃
Tolerance
Allowable current
diameter
Material
Platinum resistance
Pt100
φ12
φ16
06Cr18Ni11Ti
0Cr18Ni12Mo2Ti
-200～420
A
±（0.15+0.002t）
≤5mA
B
±（0.30+0.005t）
Copper Resistance
Cu50
-50～100
—
±（0.30+0.006t）
≤10mA
2）Type of fixing device and insertion depth
apply
Type
Type of protection tube
Nominal pressure
MPa
Thermal response time
τ0.5/s
Insert depth
mm
Thermoelectric resistance normal metal thermocouple
Fixed Threaded Taper Pipe
Overall Thrilled Tube
30
＜90
Thermocouple：75～1000
Thermal resistance：150～1000
Fixed Thread
φ16Metal Pipe
φ16Reducing Pipe
10
150～2000
Fixed Flange
By the flange form
Non-Fixed, Flexible Flange
Atmospheric pressure
Thermal resistance
Fixed Thread
φ12Metal Pipe
φ12Reducing Pipe
10
150～1000
Fixed Flange
By the flange form
Non-Fixed, Flexible Flange
Atmospheric pressure
Precious metal thermocouple
Non-Fixed, Flexible Flange
φ16Single layer ceramic tube
Atmospheric pressure
＜150
150～1000
φ20Single layer ceramic tube
＜240
150～2000
φ25Double layer porcelain tube
＜360
normal metal thermocouple
Right angle
φ16Metal tube
＜90
400～1000
Note: 1φ16 metal pipe or drill pipe can provide shell-type thermocouple, this time τ0.5<30s; 2, fixed flange body is carbon steel, sealing surface
Stainless steel; 3, the activities flange material is cast iron; 4, fixed-threaded conical tube for medium flow rate is less than 80m / s.
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