The TAD191 is a high-performance temperature transmitter designed for accurate and reliable process temperature measurement. It combines a Pt1000 measuring element with an NTC reference element to provide continuous sensor monitoring and backup measurement capability. The transmitter supports IO-Link communication together with analogue and diagnostic outputs for efficient process integration. Its stainless-steel construction and hygienic process design make it suitable for demanding liquid and gas applications. The device is particularly useful where temperature accuracy, process reliability and early detection of sensor drift are important.
Explore performance details, construction highlights, applications, and technical information in one clear overview.
The TAD191 is designed for industrial temperature measurement applications requiring dependable process monitoring and advanced diagnostics. Its dual-element sensing architecture provides an additional reference for detecting deviations in measurement performance. The integrated monitoring capability helps identify temperature sensor drift before it develops into a larger process problem. IO-Link enables convenient parameterisation, identification and access to diagnostic information. This makes the transmitter suitable for modern automated process-control environments.
The transmitter provides a measuring range of -25...160 °C / -13...320 °F for a broad range of industrial temperature applications. The Pt1000 and NTC elements work together to support reliable measurement and monitoring. The analogue output provides a standard process signal for integration with PLC and control systems. IO-Link provides additional process data, diagnostic information and configuration capabilities. Drift detection improves confidence in temperature measurement between routine calibration intervals.
The TAD191 uses a G 1/2 external threaded process connection with a sealing cone for secure process installation. Its compact installation length of 87.5 mm supports practical installation in process piping and equipment. The stainless-steel wetted construction is designed for demanding industrial environments. Diagnostic functionality helps identify sensor deviations, faults and abnormal operating conditions. Reverse-polarity, overload and short-circuit protection further support reliable operation.
Pt1000 primary measuring element
NTC reference element with backup measurement capability
Temperature range of -25...160 °C
IO-Link communication interface
Configurable analogue and switching outputs
Continuous temperature sensor monitoring
Drift and fault diagnostic capability
Robust stainless-steel process construction
Gold-plated electrical contacts
Suitable for liquids and gases
Food and beverage processing equipment
Dairy and brewery process monitoring
Liquid temperature measurement
Gas temperature monitoring
Process heating systems
Cooling and thermal control systems
Hygienic production equipment
PLC-based temperature automation
Process quality monitoring
Preventive maintenance and sensor diagnostics
| No. | Specification | Details |
|---|---|---|
| 1 | Product Code | TAD191 |
| 2 | Order Code | TAD088KLER12-A-DKG/US |
| 3 | Product Family | TAD Temperature Transmitter |
| 4 | Product Type | Temperature transmitter with drift detection |
| 5 | Measuring Element | 1 × Pt1000 |
| 6 | Reference Element | 1 × NTC |
| 7 | Backup Function | Thermically coupled sensor backup |
| 8 | Measuring Range | -25...160 °C |
| 9 | Measuring Range °F | -13...320 °F |
| 10 | Communication | IO-Link |
| 11 | Analogue Output | 4...20 mA |
| 12 | Digital Output | 1 switching/diagnostic output |
| 13 | Electrical Design | PNP/NPN |
| 14 | Process Connection | G 1/2 external thread |
| 15 | Sealing | Sealing cone |
| 16 | Installation Length | 87.5 mm |
| 17 | Media | Liquids and gases |
| 18 | Pressure Rating | 50 bar / 5 MPa |
| 19 | Operating Voltage | 18...32 V DC |
| 20 | Current Consumption | Approx. 6 mA at 24 V |
| 21 | Protection Class | III |
| 22 | Reverse Polarity Protection | Yes |
| 23 | Electrical Connection | M12 connector |
| 24 | Housing Material | Stainless steel |
| 25 | Diagnostic Function | Drift, fault and process diagnostics |
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