Flowphant T DTT35 – Hygienic Flow Monitoring Made Simple
The Endress+Hauser Flowphant T DTT35 is a compact thermal flow switch developed specifically for hygienic liquid applications. It provides reliable monitoring and local display of relative mass flow rates while also supporting temperature monitoring.
Designed for applications where dependable flow detection is more important than complex flow measurement, DTT35 combines a compact construction with programmable functionality and hygienic process connections.
Designed for Hygienic Processes
DTT35 is particularly well suited to applications in the food and beverage industry and other hygienic process environments. Its range of hygienic process connections makes it easy to integrate into different process installations.
It can be used for cooling water circulation, pump monitoring, lubrication systems, process-line leak detection and filter monitoring.
Reliable Flow Monitoring with Low Installation Complexity
Using a thermal measuring principle, DTT35 monitors liquid flow rates from 0.03 to 3 m/s. Its compact insertion-style design provides a straightforward solution for detecting insufficient flow and protecting equipment.
The device is especially useful where the process needs a simple, dependable switching signal rather than a full-scale flowmeter.
Key Performance
Measuring principle: Thermal
Flow range: 0.03–3 m/s
Measurement error: 2–10%, depending on measuring range
Medium temperature: -20 to +85 °C
CIP temperature: Up to 130 °C
Process pressure: Up to 100 bar
Nominal diameter: DN25–DN1000
Protection: IP66
Output: PNP switching + 4–20 mA analog output
Flexible Output and Monitoring Functions
DTT35 can be configured with switching outputs or a combination of a switching output and standardized 4–20 mA analog output. The analog signal can be used for flow rate or temperature values.
This gives users the flexibility to use the same compact instrument for different monitoring requirements without adding unnecessary measurement equipment.
Flow and Temperature in One Compact Device
One of the practical advantages of DTT35 is that it can monitor both flow and temperature. This makes it useful for equipment protection and process monitoring where a change in flow or temperature may indicate a problem.
The integrated LED/LCD display also provides convenient local indication of the measured process condition.
Built for Cleaning and Demanding Process Conditions
For hygienic applications, cleaning capability is essential. DTT35 supports CIP temperatures up to 130 °C, while its process design and hygienic connections allow it to be integrated into suitable food and beverage installations.
With a maximum process pressure of 100 bar and IP66 protection, it is also capable of handling demanding industrial operating conditions.
Typical Applications
Cooling water circulation monitoring
Pump functionality monitoring
Pump and compressor protection
Lubrication system monitoring
Process-line leak detection
Filter monitoring in beverage production
Hygienic liquid process monitoring
Frequently Asked Questions
What is the Flowphant T DTT35 used for?
DTT35 is designed for safe monitoring and display of liquid flow rates in hygienic applications, particularly where flow detection and equipment protection are required.
Is DTT35 suitable for food and beverage applications?
Yes. Its hygienic process connections and CIP capability make it suitable for applications such as filter monitoring in the beverage industry and other hygienic liquid processes.
Can DTT35 measure temperature as well as flow?
Yes. Depending on the selected configuration, the 4–20 mA analog output can be used to transmit flow rate or temperature values.
What is the maximum process temperature?
The normal medium temperature range is -20 to +85 °C, while the device can withstand CIP temperatures up to 130 °C.
What is the maximum process pressure?
The maximum process pressure is 100 bar.
What makes DTT35 different from DTT31?
DTT35 is the hygienic version of the Flowphant T flow switch. It is designed with hygienic process connections for applications where cleanliness and CIP capability are important, making it particularly suitable for food and beverage processes.
