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Thermatel® Sanitary
Model TD2
Flow & Level Switch
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Designed for use specifically in the clean, sanitary, or hygienic process industry, the Thermatel TD2 is an outstanding flow/level switch where easy external wipedown and a sensor free of cracks and crevices are required. The TD2 Thermal Dispersion Flow/Level switch provides continuous diagnostics, temperature compensation, narrow hysteresis, and fast response time for superior performance.
The TD2 switch uses either AC or DC input power, provides a DPDT relay output with a visual LED indication of status through the glass window in the cover. Other features include ability to electronically measure the set point, a mA output signal for trending and diagnostics and time delay.
Literature
Additional Tools:
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Measurement Principle:
The Thermatel TD2 switch utilizes Magnetrol’s proven thermal dispersion technology. The sensor consists of two RTD elements. One is the reference and the second is heated to a temperature above the process temperature. The electronics detect the temperature difference between the two elements. The temperature difference is greatest in air, then decreases when cooling occurs due to a change in media. An increase in the flow rate further decreases the temperature difference.
The set point is adjusted for the switch to alarm at the desired temperature difference. Once the set point is reached, the relay will change state.
Features:
- Temperature compensated to provide repeatable alarm under varying process temperatures
- Continuous diagnostics detect sensor fault
- A non-linear mA output signal can be used for trending, diagnostics and repeatable flow/level indication
- Detects minimum flow or presence/absence of flow
- Simple/fast calibration
- Excellent low flow sensitivity
Applications:
- CIP systems
- Mixing and blending vessels
- DI/WFI applications
- Biowaste tanks
- Sterile liquid media tanks
- Pump protection - low flow or no flow condition
Options:
- DPDT 8 amp relay or DPDT 1 amp hermetically sealed relay
- Glass window enclosure
- Spherical tip probe with 4" heat extension
- Tri-Clamp® or Varivent® sanitary process connections
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