RTD temperature sensor TWL series

Pt100resistanceplatinum resistive

Product description
Resistance thermometers for measuring temperature in liquids, solids and gases. Available as Pt100 single or Pt100 double sensor in class A or B. Two head forms are offered: head form B for Ex ia and head form XD as Ex d version.

Available versions

• Ex ia or Ex d versions
• With ceramic connection base (without transmitter)
• With transmitter
• With transmitter and LCD display

Highlights

• Measuring range: -80 … +600 °C (depending on version)
• Pt100 sensor in class A or B (IEC 751)
• Outputs: resistance (2-/3-/4-wire) or analog 4-20 mA
• Optional head transmitter with HART® protocol or PROFIBUS® / Fieldbus and display
• ATEX versions available: Ex ia and Ex d

Applications
Temperature measurement and monitoring of most liquids and light solids in HVAC, refrigeration, heating and furnace equipment, machine and plant engineering, and the chemical industry. Suitable for installation in tanks, silos, storage vessels and pipelines.

Technical data
Accuracy
Pt100 class A or B according to IEC 751

Process connections

• Flanges according to DIN / ANSI
• Weld-in sleeve
• External thread

Wetted parts

• Stainless steel 1.4404 (316L) (special materials on request)

Measuring range

• -30 … +550 °C
• -80 … +600 °C

Operating pressure

• Max. 250 bar – dependent on protective sleeve

Electrical data

• Output: resistance value, 2-, 3- or 4-wire
• Output: 4…20 mA
• Supply voltage: 8…35 VDC with HART; 9…32 VDC with PROFIBUS / FIELDBUS FOUNDATION

Protection class
IP54 … IP68

Certificates and approval
ATEX – Ex ia or Ex d

Communication
4-20 mA, HART®, PROFIBUS / FIELDBUS FOUNDATION

Characteristics / specifications

• Type: TWL
• Measuring range: -80 … +600 °C (depending on version)
• Sensor: Pt100, single or double, class A or B (IEC 751)
• Outputs: resistance (2-/3-/4-wire) or 4…20 mA
• Optional head transmitter: HART®, PROFIBUS / FIELDBUS FOUNDATION, display
• ATEX versions: Ex ia or Ex d (head form B or XD)
• Wetted parts: stainless steel 1.4404 (316L)
• Process connections: flanges (DIN/ANSI), weld-in sleeve, external thread
• Max. operating pressure: up to 250 bar (dependent on protective sleeve)
• Protection class: IP54 … IP68