Specifications
1.Spring thermal sensor with good shock-proof performance2.Imported film resistor with stable & reliable performance
Assembly thermal resistance
Introduction
Assembly thermal resistance is usually connected with display meter, recording meter and computer, etc. to directly measure temperature of liquid, vapor, gas and solid surface ranging from -200°C to 600°C during various production process.It is widely used in petroleum, chemical industry, machinery, metallurgy, electric power, light textile ,food and other scientific department.
Theory
It is based on that temperature change of material results in charge of its resistance. When resistance value change, the working instrument will display relevant temperature
Features
Spring thermal sensor with good shock-proof performance
No compensational wire, spare cost.
High measuring accuracy
High mechanical strength, good pressure-resistant performances
Imported film resistor with stable & reliable performance
Main technical parameter
Temperature range and tolerance class
Graduation | Nominal resistance (0°C)Ω | resistance ratio(100°C) | Temperature range °C | Tolerance class |
Pt10 | 10 | 1.385 | Ceramic elements: -200~600 Mica elements: -200~420 | Class A: ±(0.15+0.2%|t|) Class B: ±(0.3+0.5%|t|) |
Pt100 | 100 | |||
Cu50 | 50 | 1.428 | -50~100 | ±(0.3+0.5%|t|) |
Thermal response time
Protective tube diameter mm | Protective tube material | Thermal response time | Length(mm) | |
WZP | Φ12 | 1Cr18Ni9Ti | 30~90S | 225,250,300 350,400,450 500,550,650 900,1150,1650 2150 |
Φ16 | 30~90S | |||
Tapered protection tube | 90~180S | |||
WZC | Φ12 | 1Cr18Ni9Ti | <180S | |
Insulation resistance
The normal temperature insulation resistance for Pt should be no more less 100MΩ.
The normal temperature insulation resistance for Cu should be no more less 50MΩ.
The testing voltage of insulation resistance should be 10~100V DC.
Nature affects
Allowing the passage of maximum current is 5mA for Pt thermal resistance,and the resulting temperature rise is not more than 0.3°C.
