INATEC

INATEC – WZPK RTD sensors is a mineral insulated resistance thermometers.Generally, electrical resistance of metal varies, depending on the temperature. Platinum in particular is more linear and has a larger temperature coefficient than most other metals. It is therefore, most suitable for temperature measurements. Platinum has excellent properties chemically and physically. Industrial high purity elements are readily obtained for long term use as a resistance element for temperature measurements. The characteristics are specified in JIS and other foreign standards; thus, it permits a highly accurate temperature measurement.

Characteristics

Sensor : Pt 100 or Pt 1000 or Cu 50 etc.

Temp : – 200 ℃ to + 850 ℃.

Output : 4 – 20 mA / RTD.

Supply : DC 12 – 40 V.

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Advantages

Wide range of measurement

Due to its very small outer diameter, this resistance thermometer sensor can be inserted easily into any small measuring object. It is used over a wide range of temperatures, from – 200 ℃ to + 500 ℃.

Ouick response

This resistance thermometer sensor has a small heat capacity due to its small size and is highly sensitive to small changes in temperature and has a quick response.

Simple installation

Its flexible feature (Bending radius more than double the sheath outer diameter) makes for simple and on-the-spot installation into complex configurations. The whole unit, except for the 70 mm at the tip, can be bent to fit.

Long life span

Contrary to conventional resistance thermometer sensors which have a deterioration of resistance value with age or open circuits, etc., resistance thermometer sensor lead wires and resistance elements are insulated with chemically stable magnesium oxide, thus assuring a very long service life.

Excellent mechanical strength, and vibration resistance.

High performance is assured even under unfavorable conditions such as when used in vibrating installations, or in corrosive atmospheres.

Custom sheath outer diameters available

Sheath outer diameters are available, between 0.8 and 12 mm.

Custom long lengths available

Lengths are available up to 30 m maximum, depending on the outer diameter of the sheath.

Specification

Type Of Resistance Thermometer Sensor

Nominal Resistance Value At ℃	Class	Measuring current	R (100 ℃) / R (0 ℃)
Pt 100	A	Below 2 mA	1.3851
	B
Note
1. R(100℃) is the resistance value of the sensing resistor at 100℃.
2. R(0℃) is the resistance value of the sensing resistor at 0℃.

Standard Specifications Of Resistance Thermometer Sensor

Sheath			Conductor wire			Sheath	Approx
						max length	weight
OD (mm)	WT (mm)	Material	Dia (mm)	Resistance per wire	Material	(m)	(g / m)
				(Ω / m)
Φ 2.0	0.25	SUS 316	Φ 0.25	－	Nickel	100	12
Φ 3.0	0.47		Φ 0.51	0.5		83	41
Φ 5.0	0.72		Φ 0.76	0.28		35	108
Φ 6.0	0.93		Φ 1.00	0.16		20	165
Φ 8.0	1.16		Φ 1.30	0.13		11.5	280
Φ 9.0	1.25		Φ 1.46	0.07		21	370
Φ 12	1.8		Φ 1.50	0.07		10.5	630
Φ 3.0	0.38		Φ 0.30	-		83	41
Φ 5.0	0.72		Φ 0.50	≤ 0.65		35	108
Φ 6.0	0.93		Φ 0.72	≤ 0.35		20	165
Φ 8.0	1.16		Φ 0.90	≤ 0.25		11.5	280
Φ 9.0	1.25		Φ 1.00	≤ 0.14		21	370
Φ 12	1.8		Φ 1.50	≤ 0.07		10.5	630

Tolerance of RTDs to Temperature and Applicable Standard Table

	IEC 751		JIS C 1604
	Class	Tolerance (℃)	Class	Tolerance (℃)
Pt 100	A	± (0.15 + 0.002 \|t\|）	A	± (0.15 + 0.002 \|t\|）
(R (100 ℃) / R (0 ℃) = 1.3851	B	± (0.3 + 0.005 \|t\|）	B	± (0.3 + 0.005 \|t\|）

Note
1. Tolerance is defined as the maximum allowable deviation from the temperature vs resistance reference table.
2. ltl = modulus of temperature in degrees Celsius without regard to sign．
3. Accuracy class 1 / n (DIN) refers to 1 / n tolerance of class B in IEC 751