RTD Sensor, Pt100, Thermowell

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$91.54

Pt100 RTD sensor is a platinum resistor temperature sensor with protection head and stainless steel thermowell, high pressure resistant, fast thermal response time and long operating life. RTD sensor can directly measure the temperature in the range of -200~+420 ℃ in various production processes.

Total Length of Thermowell *

SKU: ATO-RTD-TW

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Overview
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Dimension

RTD (resistance temperature detector) sensor can directly connect to secondary instrument by copper conductor, and provide accurate input signal of temperature changes for display instruments, recording instruments, signal conditioners, scanister and computer.

Specification:

1. RTD temperature range and accuracy chart

Type of sensing element	Measuring range	Allowable deviation Δt
Pt100	-200~420℃	Class B (-200~800℃) Permissible deviation ±(0.30+0.005\|t\|)
Pt100	-200~420℃	Class A (-200~650℃) Permissible deviation ±(0.15+0.002\|t\|)
Cu50	-100~150℃	-50~100℃ Permissible deviation ±(0.30+6.0*10-3t)

Note: t is the actual measuring temperature absolute value of the temperature sensing element.
2. Thermal response time of RTD sensor

Type of sheathed sensing element	Thermowell material	Thermowell diameter (mm)	Thermal response time (s)
Pt100, Pt1000	1Cr18Ni9Ti, 2Cr25Ni20	Ф16	≤90
Pt100, Pt1000	1Cr18Ni9Ti, 2Cr25Ni20	Ф12	≤30
Cu50, Cu100	H62, 1Cr18Ni9Ti	Ф16	≤120
Cu50, Cu100	H62, 1Cr18Ni9Ti	Ф12	≤120

3. Thermowell installing form (unit: mm)
RTD sensor installing form

4. Selection chart

Total length of thermowell (L)	Branch number	Thermowell installing form	Protection head form	Diameter of thermowell
300~2150mm (Φ16 for I1, I2, I3, I4); 225~1150mm (Φ12 for I1, I2, I3, I4); 225~550mm (for I6)	B1: Single branch; B2: Double branch	I0: No thermowell; I1: No fixed device; I2: Fixing thread; I3: Movable flange; I4: Fixed flange; I5: Rectangular movable flange; I6: Taper thermowell and fixing thread	C3: Waterproof protection head; C4: Explosion-proof protection head	D0: Φ16mm; D1: Φ12mm

Tips: Pt100 RTD sensor working principle
Pt100 is a kind of platinum resistance, and also a thermistor of positive temperature coefficient, that is, the resistance value rises with the increase of the temperature. Platinum resistance has high accuracy, suitable for neutral and oxidizing medium. It has good stability and can test a wide temperature range (-200~420℃). The most important thing is that platinum resistance has good linearity, that is, when the temperature changes one degree, the increase of resistance value is basically the same. Pt100 resistance value is 100 ohm at 0℃, 18.52 ohm at -200℃ and 175.86 ohm at 200℃. In addition to Pt100, the most commonly thermistor are Pt1000 (platinum resistance of 1000 ohm at 0℃) and Cu50 (copper resistance of 50 ohm at 0℃).

In this video, ATO will show you how to connect RTD sensor to temperature controller and how to use RTD sensor to measure water temperature.

Fixed Installation Dimension Drawing

Design serial number		1
Structure diagram
Name		Fixed thread
Size		M272 (default), G3/4", M332, G1", other
Protection tube	Diameter	φ12mm, φ16mm, other
	Texture of material	1Cr18Ni9Ti, 2Cr25Ni20, other
	Withstand voltage	≤10MPa
Design serial number		2
Structure diagram
Name		Movable flange
Protection tube	Diameter	φ12mm, φ16mm, other
	Texture of material	1Cr18Ni9Ti, 2Cr25Ni20, other
	Withstand voltage	Atmospheric pressure
Design serial number		3
Structure diagram
Name		Fixed flange
Size		DN15mm (default)	D0	95mm	DN20mm	105mm
			D1	65mm		75mm
			D2	45mm		55mm
			φn	4-φ14mm		4-φ14mm
		DN25mm	D0	115mm	DN32mm	140mm
			D1	85mm		100mm
			D2	65mm		78mm
			φn	4-φ14mm		4-φ18mm
		DN40mm	D0	150mm	DN50mm	165mm
			D1	110mm		125mm
			D2	85mm		100mm
			φn	4-φ18mm		4-φ18mm
		H	12mm
Protection tube	Diameter	φ12mm, φ16mm, other
	Texture of material	1Cr18Ni9Ti, 2Cr25Ni20, other
	Withstand voltage	≤6.4MPa
Design serial number		4
Structure diagram
Name		Conical fixed thread
Size		M272 (default), M332, G1", other
Protection tube	Diameter	φ12mm, φ16mm, other
	Texture of material	1Cr18Ni9Ti, 2Cr25Ni20, other
	Withstand voltage	≥30MPa