TEMPERATURE SENSORS UP TO 400 °C WITH IP 68 WITH PROGRAMMABLE CONVERTER 4–20 mA

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These resistance-type sensors are intended for contact measurements of temperatures up to 400 °C. Temperature sensors, in combination with a central holder or thermowell, can be used to measure the temperature in various applications of an industrial environment. The sensor variant with welded thread is ideal for direct measuring of mediums in ducts. The sensors meet the level of protection IP 68 in accordance with EN 60529. The standard operating temperature range is -50 to 400 °C. The sensors can be utilised for any control systems that are compatible with output signal 4 to 20 mA.

The sensors are designed to be operated in a chemically non-aggressive environment.

ACCESSORIES

metal central holder K 120
stainless steel thermowell JPTS 41
screw with collet or cutting rings – if different lengths of stem immersion of the temperature sensor are set

DECLARATION, CERTIFICATION, CALIBRATION

Manufacturer provides EU Declaration of Conformity.
Calibration – The final metrological inspection – comparison with standards or working instruments – is carried out for all the products. Continuity of the standards and working measuring instruments is ensured within the meaning of the Section 5 of Act no.505/1990 on metrology. The manufacturer offers a possibility to supply the sensors calibrated in SENSIT s.r.o.’s laboratory (according to requirements of the EN ISO/IEC 17025 standard) or in an Accredited laboratory.

Technické parametry

Sensor type with smooth stem Sensor type with welded-on screwing	PTS 481 PTS 491
Type of sensing element	Pt 100
Output signal	4 to 20 mA
Maximum measurement range	-50 to 400 °C
Adjustable measurement range	optional, minimum interval 10 °C
Accuracy of sensing element	class B in accordance with EN 60751
Accuracy of converter	temperature error < 0.05 °C error of setting < 0.12 °C error of linearity< 0.05 % from the set range, minimum 0.16 °C influence of supply voltage < 0.005 %/V from the range
Current limitation	sensing element < 3.2 mA sensing element break > 22.7 mA
Lead-in connection	recommended 1.5 to 2.5 mm²
Ingress protection	IP 68 (1 bar) in accordance with EN 60529
Material of sensor stem	stainless steel DIN 1.4301
Standard length of the stem L1	50, 100, 160, 220, 280, 400 mm
Method of programming	AY - USB adapter *
Thread types for PTS 491	G 1/2"; M 20 x 1.5; M 27 x 2
Insulation resistance	> 200 MΩ at 500 V DC, 25 °C ± 3 °C; humidity < 85 %
Recommended power supply (SELV or PELV)	8 to 28 VDC, recommended value 24 VDC
Material of connection head	aluminium alloy, LIMATHERM B
Operating conditions	ambient temperature: -25 to 70 °C relative humidity: max 100 % (at the ambient temperature 25 °C) atmospheric pressure: 70 to 107 kPa
Weight	approximately 0.25 kg

* programming software is free

MAXIMUM FLOW SPEED OF THE MEASURED MEDIUM - AIR AND WATER VAPOUR / WATER [m.s^-1]
Length of the thermowell/ stem	>60 to 100 mm	>100 to 160 mm	> 160 to 220 mm	> 220 to 400 mm
Values for the version with thread	15 / 1.5	8.0 / 1.0	2.5 / 0.6	0.6 / 0.3

Note: Manufacturer reserves the right to make changes in design and technical characteristics of the products. For actual information, please always contact your dealer.