7400
Pt100 temperature sensor
- Accuracy, IEC 60751 class A
- Terminal head DIN 43.729 form B
- Stainless steel
- Protection tube Ø 9 x 1
- Temperature range -50°C to +400°C
Data sheet : 
Application
- Temperature measurement in industrial systems, eg. in the food, chemical and pharmaceutical industries, district heating, power plants and ships.
- Temperature measurement in gas and floating media.
Technical characteristics
- The sensor element is a thin film platinum resistor - Pt100 - trimmed at a laboratory to comply with the resistance values of the standard IEC 60751, class A. The advantage of a thin film element is an ultra short reaction time. The Pt100 element is electrically isolated from the protecting tube and terminal head.
- The protecting tube is Ø 9 x 1 mm stainless, acid-proof steel W no. 1.4571 / AISI 316TI, filled with aluminum oxide powder. A 1/2” RG thread nipple is welded on the protecting tube with a packing sheet of Ø 30 and span 30.
- The terminal head is a standard DIN 43.729 form B housing produced in light-alloy metal, protected against corrosion through strong industrial lacquering. The sensor is available with or without cooling extension to keep the terminal head clear of isolated surfaces.
Electrical connection
- Each sensor is delivered with a three-wire connection which allows cable compensation to the sensor element.
Option
- Pt100 sensor type 7400 is available with a built-in 2-wire programmable transmitter for both standard and I.S. installations.
Environmental Conditions
Protection degree IP54 Mechanical specifications
Max. tightening torque 50 Nm Packing surface Ø 30 x Ø 21.5 Max. pressure for insertion length ≤ 250 mm 36.5 bar Max. pressure for insertion length > 250 mm 22.5 bar Cable connection (screwed) M20 x 1.5 Common specifications
Recommended sensor current ≤ 2 mA Max. temperature diffusion at 0°C: IEC 60751 class A ≤ ±0.15°C Long-term stability: (≥1000 hours at max. temperature) ≤ ±0.05°C