Parsjahd Products - RTD's

Also called resistance temperature detectors (RTDs), are sensors used to measure temperature by correlating the resistance of the RTD element with temperature. Most RTD elements consist of a length of fine coiled wire wrapped around a ceramic or glass core.

The element is usually quite fragile, so it is often placed inside a sheathed probe to protect it. The RTD element is made from a pure material, platinum, nickel or copper. The material has a predictable change in resistance as the temperature changes; it is this predictable change that is used to determine temperature.

Most Common Type
Head Output Sensor
Cable Output Sensor
Connector Output Sensor


Sensor Types
Types: RTD 100 Ω, RTD 1000 Ω


Typical RTD’s
Thin film elements
Wire-wound elements
Coiled elements


Temperature Limit

Type of resistance / Temperature range
RTD 100 Ω / -200 … +600 °C
RTD 1000 Ω / -40 … +400 °C


Tolerance Class


Tolerance class Tolerance
A 0.15 + 0.002 x [t]
B 0.3 + 0.005 x [t]

Standard Sensor Diameter
3mm, 6mm, 8 mm, 10mm, 12.7mm
Other sizes on request


Sheath Material
S.S. 316
S.S. 310
Incoloy 800
S.S. 446

Insertion Length
200mm, 350mm, 500mm, 800mm, …
*insertion length totally is unlimited.


Number of sensing Elements
Simple sensor or duplex sensor (for different uses)


Electrical Connection
Head connection, terminal block, transmitter, cable, connectors…
Output quantity format (analogue, digital, communication protocol)


Thermo Well
All types of Flanged, Threads, weld-in, Van-Stone are available.
Material range is included S.S 316, Alloy 650, Alloy 800, Monel 400….
*Barstock thermo well and tube type can be supplied based on insertion length.


ATEX Version
Intrinsically safe design is available for application in hazardous area.
Others on request