The IFM TAD981 temperature transmitter with drift detection is designed for accurate and reliable temperature monitoring in hygienic industrial processes. It combines a Pt1000 measuring element with an NTC backup element, allowing temperature measurement even if one sensing element fails. The transmitter supports IO-Link, 4–20 mA analogue output and configurable diagnostic functions. Its Aseptoflex Vario connection, 33 mm installation length and IP68/IP69K protection make it suitable for demanding process applications.
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The TAD981 is an advanced IFM temperature transmitter developed for applications where accurate measurement, sensor diagnostics and process reliability are important. It uses a thermally coupled Pt1000 and NTC measuring arrangement with a backup function. This allows the sensor to continue temperature measurement if one element becomes unavailable. The device supports IO-Link communication and provides diagnostic information for efficient process monitoring and maintenance.
The TAD981 provides a scalable measuring range from -25 to 160 °C with a factory setting of 0 to 150 °C. Its drift warning and drift alarm thresholds can be configured from 0.2 to 5 °C in 0.05 °C steps. The analogue output provides 4–20 mA, while the diagnostic output can monitor drift and sensor faults. Its dynamic response is approximately 3 seconds for T05 and 6 seconds for T09.
The TAD981 features a G1 external thread with Aseptoflex Vario process connection and a 33 mm installation length. Its wetted parts are manufactured from stainless steel materials and have a surface roughness of less than Ra 0.6 µm. The sensor is suitable for liquids and gases and supports applications in food, beverage and hygienic process equipment. IP68 and IP69K protection helps provide dependable operation in demanding industrial environments.
Pt1000 and NTC thermally coupled sensing elements
Backup temperature measurement function
Integrated drift detection
Configurable drift warning and alarm
-25 to 160 °C measuring range
4–20 mA analogue output
Configurable diagnostic output
IO-Link communication
G1 external thread with Aseptoflex Vario
33 mm installation length
IP68 and IP69K protection
Gold-plated M12 contacts
50 bar pressure rating
5-point calibration certificate included
Food and beverage processing
Hygienic process equipment
Process temperature monitoring
Process tanks
Hygienic pipelines
Liquid temperature measurement
Gas temperature measurement
Pasteurisation systems
Heating and cooling processes
Process control systems
Predictive maintenance
Temperature-based equipment protection
| Specification | Details |
|---|---|
| Product Code | TAD981 |
| Brand | IFM |
| Product Type | Temperature transmitter with drift detection |
| Model | TAD033KLES30-A-ZKG/US |
| Measuring Elements | 1 x Pt1000 + 1 x NTC |
| Measuring Element Function | Thermally coupled with backup function |
| Measuring Range | -25 to 160 °C |
| Factory Setting | 0 to 150 °C |
| Temperature Range | -13 to 320 °F |
| Process Connection | G1 external thread, Aseptoflex Vario |
| Installation Length | 33 mm |
| Probe Diameter | 10 mm |
| Minimum Installation Depth | 25 mm |
| Media | Liquids and gases |
| Pressure Rating | 50 bar / 5 MPa |
| Analogue Output | 4–20 mA |
| Digital Output | 1 configurable output |
| Communication | IO-Link |
| Electrical Design | PNP/NPN |
| Supply Voltage | 18–32 V DC |
| Current Consumption | 6 mA at 24 V |
| Protection Class | III |
| Protection Rating | IP68 / IP69K |
| Dynamic Response T05/T09 | 3 / 6 s |
| Resolution | 0.05 °C |
| Drift Warning | 0.2 to 5 °C |
| Drift Alarm | 0.2 to 5 °C |
| Accuracy | ±0.2 K in -10 to 130 °C range |
| Temperature Coefficient | < ±0.01 % of span / 10 K |
| Wetted Material | Stainless steel 316L / 1.4404 and 1.4435 |
| Wetted Surface Roughness | Ra <0.6 µm |
| Electrical Connection | M12, A-coded |
| Connector Contacts | Gold-plated |
| Ambient Temperature | -25 to 70 °C |
| Storage Temperature | -40 to 85 °C |
| Shock Resistance | 50 g, 11 ms |
| Vibration Resistance | 20 g, 10–2000 Hz |
| Power-on Delay | 8 s |
| Integrated Watchdog | Yes |
| Manufacturer | IFM electronic |
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