URT Series (Thin Film) RTD Sensors
Pt100 Pt200 Pt500 Pt1000  Elements
(100 Ohm/200 Ohm/500 Ohm/1000 Ohm) Thin Film
Pt100 Pt200 Pt 500 Pt 1000 elements to IEC 751 Class A/B
For use from –50°C to +550°C  Dip construction
Suitable for surface & immersion applications where protected
Vibration resistant.
●Wide temperature range from -50°C to 550°C.
●High temperature accuracy Advanced products can be accurate to 0.1°C.
●Good long-term stability The change in resistance after 1000 hours of operation at 400°C is less than 0.04%.
●Good product consistency, good interchangeability of products of the same level, and can be freely replaced.
●Good batch consistency Different batches of products can be interchanged without changing the circuit.
●Good environmental adaptability Special ceramic structure protection, strong and can withstand various Environments.
Pt1000 Pt200 Pt500 Pt1000 elements to DIN EN 60751:2009-05/IEC 60751  F0.15/ F 0.3 For use from –50°C to +550°C
Temperature coefficient (TCR) 3850ppm/K
Measuring current 25°C reference recommended current 0.3mA; maximum allowable current 1mA
Lead lengths (L) 10 mm +- 1 mm
Long-term stability max. R0-drift 0.04% after 1000 h at 550°C
Vibration resistance at least 40 g acceleration at 10 to 2000 Hz, depends on installation
Shock resistance at least 100 g acceleration with 8ms half sine wave, depends on installation
Environmental conditions unhoused for dry environments only
Insulation resistance > 100 MW at 20°C; > 2 MW at 500°C
Self-heating 0.4 K/mW at 0°C
Response time   water current (v = 0.4 m/s): t0.5 = 0.06 s t0.9 = 0.20 sec)
air stream (v = 2 m/s): t0.5 = 3.0 s t0.9 = 13.0 sec)
●High temperature test : Keep the Pt sensors in +550°C for 1000 hours.
●Low temperature test : Keep the Pt sensors in -50°C for 1000 hours.
●Humidity test : Keep the Pt sensors in 60°C and 90°C to 95% HR for 1000 hours.
●Thermal shock test : Keep the Pt sensors in 0°C ice water for at least to 15sec , then within 10sec.
Directly put into 100°C hot water for least to 15sec, the above process should be proceeded for least 10 cycles.
After each item test, valuation of item 1-1 should be within 0.12% and item 1-3 Should exceed 100M at 500V DC.
●Automobile industry: 
Automotive intake/exhaust temperature measurement, energy battery monitoring, parking heating
system and transmission temperature control, etc.
●Household appliances:
Control of household barbecue, temperature control of electric oven, monitoring and control of cooking
temperature of microwave oven, temperature sensor of rice cooker, temperature control of thermal
decomposition, etc.
●Industrial manufacturing:
Durable resistance thermometers, replacement thermocouples up to 600°C, laboratory and industrial ovens, high and low temperature environmental test chambers, heat meters, and more.
Burner temperature control of automatic boilers, heat measurement in collection systems requiring calibration, loop tube control of solar energy systems, smart building environment control, etc.
●Medical equipment:
Medical environment monitoring, cryogenic systems for storing medical samples, temperature monitoring of medical equipment, customized medical temperature sensor platforms, etc.
●Electronic system:
Front-end transmitters, optimized circuits for low power consumption, reference temperature sensors for transmission standards, ambient temperature control or circuit protection, etc.
●Electrical( Insulation Resistance)
1000M ohm or more The Pt-SMD shall be cramped in the metallic block and tested, as shown below.
Test Voltage: 100V DC for 1 minute at room temperature.
The resistance of a platinum wire with temperature to measure the change in temperature.
The equation for such a change is:   Rθ= Ro(1 + αθ + βθ2
●where <θ is the temperature change and α and β are constants, β being much smaller than α.
We therefore ignore the term β2 and assume that the resistance of the wire varies uniformly with temperature:  a is the temperature coefficient of resistance of the material. For platinum a = 3.8x10-4°C -1.

●A simple form of the platinum resistance thermometer is shown in Figure 1. It consists of a platinum wire wound non- inductively on a mica former and held in a glass tube by silica spacers.
The resistance of the wire is measured with a Wheatstone bridge network and to allow for the change in resistance of the leads a set of dummy leads are included in the opposite arm of the bridge (see Figure 2).
●This type of thermometer has a large range, from -200°C to +1100°C and this can
be extended by the use of different wires. Bronze has a range starting at -260°C and
using carbon temperatures as low as -270°C can be measured.
●The advantages of the resistance thermometer are its convenient size, wide range and high sensitivity (0.000 05°C). It can only be used for steady readings, however, and is not direct-reading.
◆Relationship of temperature with Resistance
When   t≧t0°C When  t <0°C
Rt= R0 (1+At Bt2 ) Rt= R0 [1+At Bt2+C(t-100) t3]
A = 3.9083E-3 B = 3.9083-03
B = -5.7750E-07 B = -5.7750E-07
  C = -4.1830E-12
  R0= 1.000E+02
◆Ordering Information
Series Code Resistance Tolerance Class
URT 100