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Long March Instrument (Jinhu) Co., Ltd
Thermal resistance pt100
NegotiableUpdate on 08/14
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Overview
Introduction: Overview of Thermistor PT100 Thermistor PT100 As a sensor for measuring temperature, it is usually used in conjunction with display instruments, recording instruments, and electronic regulators. It can directly measure liquid, steam, and gas media within the range of -200 ℃ to 620 ℃ in various production processes
Product Details
Thermal resistance pt100overview
Thermal resistance pt100As a temperature sensor, it is usually used in conjunction with display instruments, recording instruments, and electronic regulators. It can directly measure the temperature range from -200 ℃ to 620 ℃ in various production processes
The surface temperature of liquid, vapor, gas media, and solids inside. Pt100 platinum thermal resistance with standard division number meets the professional standard division number of Cu50 copper thermal resistance. There are two types of assembled and designed resistors
Resistors should comply with JB/T8622-1997 and JB/T8623-1997 standards
Thermal resistance pt100Temperature measurement range and accuracy
| Thermal resistance category | Measurement range ℃ | Graduation | Allowable deviation △ t ℃ |
| WZP type platinum resistor | -200～420 | Pt100 | B * allowable deviation ± (0.3 or+0.005 | t |) |
| A * allowable deviation ± (0.15 or+0.002 | t |) | |||
| WZC type copper resistor | -150～100 | Cu50 | -Allowable deviation of 50-100 ℃ ± (0.30+6.0 × 10)-3t） |
Thermistor PT100The ratio of the resistance value (R100) at 100 ℃ to its resistance value R0 at 0 ℃: (R100/R0)
Division number Pt100: A * R0=100 ± 0.06 Ω
B * R0=100 ± 0.12 Ω
Index number Cu50: R0=50 ± 0.05 Ω
thermal response time
When there is a step change in temperature, the time required for the output of the thermal resistor to change to 50% of the step change is called the thermal response time, represented by T0.5.
Thermistor nominal pressure
Generally refers to the external pressure (static pressure) that the protective tube can withstand at the working temperature without breaking. The allowable nominal pressure is not only related to the material, diameter, and wall thickness of the protective tube, but also to its structural form, installation method, placement depth, as well as the flow rate and type of the measured medium.
Thermistor * small insertion depth
| min=| yuan+15D
Min - * Small available insertion depth
| Element - Temperature sensing element length
D - outer diameter of protective tube
natural influence
When measuring a current of 5mA through a thermal resistor, the measured resistance increment converted to temperature value should not exceed 0.30 ℃.
insulation resistance
The test voltage for insulation resistance at room temperature can take any value from 10 to 100V DC, with an ambient temperature range of 15 to 35 ℃ and a relative humidity not exceeding 80%. The insulation resistance value at room temperature should not be less than 100M Ω
