Flow transmitter testo 6448 perspective

testo 6448 – flow transmitter for flexible pipe dimensions

For compressed air for flexible pipe dimensions (DN40 - DN300)

  • Can be installed under pressure
  • Measures flow velocity (m/s) in the measuring range 0...80 m/s or 160 m/s, consumption measurement in Nm³ and median temperature in °C.
  • Several measurement sites can be covered by one sensor

Delivery time: 5-10 working days

SKU: 0555 6448 Categories: , , ,

The mobile compressed air flow transmitter testo 6448 is used for the determination, monitoring, control and reporting of compressed air consumption and thus for the determination of leakage in compressed air systems, as well as consumption-based cost allocation and peak load management.

  • Can be installed under pressure
  • Measures flow velocity (m/s) in the measuring range 0…80 m/s or 160 m/s, consumption measurement in Nm³ and median temperature in °C.
  • The backstop and ball valve ensure quick and safe installation and de-installation of the compressed air sensor on site. This means that several sites can be covered by one sensor.
  • Maximum flexibility thanks to different signal outputs:
    – Analog output 4 to 20 mA (4-wire)
    – Pulse output
    – 2 binary outputs (parameterizable: consumption- or volume flow-dependent, opening, closing, hysteresis, window)

The probe is optimized for easy, safe and quick installation and can be used for measurements on different pipe diameters. An optimal drilling clamp enables precise positioning of the sensor without the need for welding.

The respective supply line may remain under pressure when installing this drill clamp or during maintenance / replacement of the sensor (normal operating conditions). A ball valve allows the compressed air line to be closed securely and airtight when removing the sensor and when reinstalling it.

Contact us for price information

Selectable unitsm/s
Measuring range10 to 160 m/s
Accuracy±3% of meas. value ±3 % of fsv (at room temperature)
SensorThermal, glass-coated ceramic sensor (calorimetric measurement procedure)
Response time< 0.1 sec (for damping parameter = 0), delayable via operating menu (0 to 1 sec)
(Norm) volume flow
Selectable unitsm3/h, m3/min, m3
Measuring range1Maximum measuring range of volume flow is dependent on inner pipe diameter (see page 3)
Temperature
Unit°C
Measuring range0 to +60 °C / 32 °F to +140 °F
Inputs and outputs Analog outputs
Output type4 to 20 mA (4-wire) freely scalable between zero and measuring range end
Loadmax. 500 Ω
Further outputs
Pulse outputPulse speed freely settable in 1 m3 steps
Switch output2 switch outputs, parameterizable (consumption or volume flow-dependent, NC, NO, hysteresis, window), loadable with max. 20 to 30 VDC or 250 mA each, switch status is displayed via 2 LEDs
Supply Voltage supply19 to 30 V DC
Current consumption<100mA
ConnectionM12 x 1 plug, loadable up to 250 mA, short-circuit-proof (synchronized), reverse-polarity-proof, overload-proof
Material housingPBT-GF 20, PC (APEC), Makrolon, V2A (1.4301), Viton
Weight850 g
Display
Display4-figure alphanumerical display, two operating buttons, operating menu, LED (4 x green for phys. units, 3 x yellow for display x 1,000 or switch status)
Operation
Parameterization2 operating buttons
Miscellaneous
Protection classIP 65/III
EMCaccording to guideline 89/336 EEC
Media contactV2A (1.4301), PEEK, polyester, Viton, anodized aluminum, glass-coated ceramics
Standard referenceCalculation of volume flow due to manual input possibility of temperature, humidity and pressure. Work settings: 15 °C, 1013.25 hPa, 0%RH
Humidity (sensor)rel. humidity < 90%RH
Operating temperature (housing)0 to +60 °C (+32 to +140 °F)
Storage temperature-25 to +85 °C (-13 to +185 °F)
Measurement mediumCompressed air, with special calibration also CO2 or N2
Process pressurePN 16 (max 16bar/232psi)
Pressure tightness/ pipe clamp16 bar (max.) for DN40-DN200; 10 bar (max.) for DN250
Air qualityISO 8573: recommended classes 1-4-1
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Datablad testo 6448
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