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Testo India Pvt. Ltd.
Testo India Pvt. Ltd.


Pressure Measuring Instruments

Differential Pressure Meter

Humidity Measuring Instrument
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Model ID: Testo 521

Testo 521- Ideal for Pitot tube measurements in the range 5 to 100 m/s with accuracy with an internal pressure sensor from 0 to 100 hPa. testo 521-1 and testo 521-2 are the two accurate classes with internal pressure sensors with Class 0.2 and Class 0.1. Accurate measurements for velocity speeds in the range from 1 to 12 m/s, can be carried out using the 100 Pa probe which can be attached externally.

 

Features:

 

  • Up to two 4 to 20 mA interfaces connectable to hand-held instrument
  • Scaling of analog signal in hand-held instrument
  • Multi-point and timed mean calculation
  • Density compensation
  • 1 analog signal evaluation per interface
  • Transmitter can be supplied with power from Testo 521
  • 4 to 20 mA interface can be connected to testo 521, 526, 400, 650 und 950 hand-held instruments
  • 2 user-defined probe inputs allow the connection of external probes for pressure, temperature, current/voltage
  • Temp. compensated differential pressure sensor in instrument
  • Additional two probe sockets for measuring pressure and temp
  • Velocity speed and volume flow direct calculation



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