The OPTITEMP TRA-S21 is a threaded RTD sensor assembly with a reduced welded multipart thermowell (based on form 8). The industrial temperature assembly for standard applications is suitable for temperature measurement of liquids and gases where fast response time is required. It can be used in pipes and tanks at low to medium pressures and flow velocities. The OPTITEMP TRA-S21 is predominantly used in applications with lower process temperatures up to +600°C / +1112°F.
Product features and options depend on device configuration: Contact us to make sure that your preferred functionality can be combined in one device.
Depending on selected device configuration
| Product type | Temperature assembly |
| Product family name | OPTITEMP |
| Product positioning | For lower temperature applications |
| Product variants | Standard: OPTITEMP TRA-S21 |
| Measurement variables | Temperature |
| Measurement principle | Resistance (RTD) |
| Measured media | Liquids, Gases |
| Assembly with thermowell | Yes |
| Temperature assembly design | DIN-style |
| Thermowell type | Multipart welded |
| Thermowell form (according to DIN 43772) | Form 8 |
| Sensor mounting | Screw-in |
| Measuring insert replaceable | Yes |
| Measuring insert type | Replaceable spring loaded mineral isolated measuring insert OPTITEMP TR 100 |
| RTD element type | 1 x Pt100 |
| RTD configuration | 3-wire, 4-wire |
| Tolerance class (according to DIN EN 60751) | 1/10 DIN B, A, AA, B |
| Temperature sensor connection type option | Ceramic terminal block, Flying wires, Temperature transmitter |
| Thermowell diameters | Ø11 mm / 0.43'', Ø12 mm / 0.47 |
| Thermowell tip design | Reduced |
| Mounting point | Pipe, Tank |
| Measuring point | Pipe, Tank |
| Process temperature |
-200…600°C/ -327…+1112°F |
| Wetted parts | Austenitic stainless steel (1.4571/316Ti) |
| Thread connections |
Male: G½, G¾, G1 ½ NPT, ¾ NPT |
