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VALCOM TDR
VALCOM TDR
V-TDR
SERIES TDR 1-13-15

TDR series transducers are working on a force balance principle and have been realized to measure level of liquids in open
vessels or pressure in closed systems. The models TDR1, TDR 13 and TDR15 are especially used in the pulp and paper industry.

The pneumatic output signal ratio is 1:1 with the measured variable. They are used in connection with the pneumatic receivers
and/or pressure switches installed locally or on control panels for indication alarm, or in connection with pneumatic controllers for
analog pneumatic control of level and pressure
· Process compatibility
Transmit pressure created by any liquid head, regardless of consistency and viscosity
· High accuracy
Transmit process pressure on 1:1 basis using force balance principle
· Corrosion resistant
Wide selection of material to meet process requirements
· Dependable service
Flush mounting avoids any possibility of plugging

WORKING PRINCIPLE
Regulated air supply flows through needle valve into inner diaphragm chamber and lifting the diaphragm goes to atmosphere through central exhaust port . Pressure increases in the process line press the diaphragm against exhaust port until back pressure (output pressure signal) has reached the balance. Pressure decreases in the process line acts in the opposite way.

TECHNICAL FEATURES
- Measuring range: TDR15 = 0….0.5 to 0….7bar
TDR1 / TDR13 = 0….1 to 0….40 meters H2O
- Output signal: 1 to 1 ratio
- Supply pressure: 1.2 times max measured pressure.
- Connection: 1/8” G- F
- Max medium temperature: 150°C
- Max static pressure: 10bar
- Body and welding nipple material: AISI 316 st.st.; Hastelloy B or C; Titanium
- Diaphragm material: PTFE; Titanium; FL ; AISI 316 st.st.; Hastelloy B or C ; Others
- Supply unit material: AISI 304 st.st.
- O-Rings on process material: FPM
- Accuracy: better than 1%
- Repeatability: 0.15%
- Air consumption: 0.08 Nm3/h max





 
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