Features
- For temperature measurement -50...+500 °C
- Pt100 Class A or custom sensing element
- A4 / AISI316L acid proof steel protection tube
- Integrated thermowell with threaded connection
- 4-20 mA / 0-10 V analog or RS485 Modbus RTU digital
Description
ET521 screw-in RTD thermometers with terminal head and replaceable measuring insert are designed for measuring temperatures in liquids and gases under demanding conditions.
Applications include heating installations, ovens, furnaces and plant engineering, as well as industrial automation.
The protection tube with welded screw fitting functions as an integrated thermowell and the measuring insert can be replaced without interrupting the process.
The standard version includes Pt100 class A sensing element with measurement range -50...+250 °C, process connection with G1/2B thread and DIN B type terminal head.
Technical data
| Sensing element | Pt100, Pt1000, class A according to EN 60751 |
| Measurement range | -50...+250 °C or -50...+500 °C |
| Protection tube | 1.4404 / AISI316L acid poof steel |
| Dimensions | Ø10 mm, L75...350 mm |
| Standard lengths | 75 / 100 / 130 / 160 / 200 / 250 / 300 / 350 mm |
| Protection class | IP55 as standard, up to IP67 on request |
| Terminal heads | DIN 43729 type B as standard |
| spherical type N with hinged lid on request | |
| miniature type M on request | |
| Ambient temperature | with screw terminal block -40...+100 °C |
| with transmitter -40...+75 °C | |
| Output | ceramic terminal block with 2-, 3- or 4-wire RTD connection |
| Transmitter option | analog output 4...20 mA or 0...10 V |
| digital RS485 Modbus RTU interface | |
| Mounting accessories | threaded thermowells |
