TESTO 521-3 Differential pressure measuring instrument (up to 2.5 hPa)
RM 0.00
Description
- Integrated temperature-compensated differential pressure sensor with accuracy of up to ± 0.5 Pa
- Calculation of the flow velocity and the volume flow via Pitot tube (optional)
- Direct zeroing of the display values of pressure probes
- 2 probe inputs for additional pressure and temperature probes
The testo 521-3 high-precision differential pressure measuring instrument easily determines even the smallest differential pressures (up to +2.5 hPa). Its high accuracy and a resolution of 0.1 Pa make the instrument ideal for differential pressure measurements in clean rooms or for flue inspections.
The integrated temperature-compensated differential pressure sensor performs measurements to an accuracy of up to ± 0.5 Pa. In addition, you can attach up to 2 further optional probes to the measuring instrument. This means you can flexibly adapt the differential pressure measuring instrument to your application. You have the choice of the following probes:
- Differential pressure probes
- Absolute pressure probes
- Relative pressure probes
- Temperature probes (e.g. surface probes or immersion and penetration probes)
The practical features of the testo 521-3 differential pressure measuring instrument
The integrated differential pressure sensor enables the testo 521-3 measuring instrument to calculate flow velocity and volume flow using a Pitot tube (which can be ordered separately). The differential pressure measuring instrument also offers timed and multi-point mean calculation.
The optional ComSoft software enables you to save the measurement data so that it is linked to the measuring location and analyze it on the PC. You can use the optional testo fast printer to print out measurement data directly at the measuring location.
You can choose between the following units for pressure measurement: mbar, hPa, bar, Pa, kPa, inH2O, mmH2O, torr and psi. The mean value, the last measured value and the min./max. values can be displayed at the press of a button.
Delivery Scope
Technical Data
Temperature – NTC | |
---|---|
Measuring range | -40 to +150 °C |
Accuracy | ±0.2 °C (-10 to +50 °C)*
±0.4 °C (Remaining Range)* |
Resolution | 0.1 °C |
*Accuracy information applies only to instrument without probes connected
Temperature – TC Type K (NiCr-Ni) | |
---|---|
Measuring range | -200 to +1370 °C |
Accuracy | ±0.4 °C (-100 to +200 °C)*
±1 °C (Remaining Range)* |
Resolution | 0.1 °C |
*Accuracy information applies only to instrument without probes connected
Differential pressure (internal sensor) – Piezoresistive | |
---|---|
Measuring range | 0 to 2.5 hPa** |
Accuracy | ±0.5 Pa (0 to 20 Pa)
±(0.5 Pa ±0.5 % of mv) (20.1 to 250 Pa) |
Resolution | 0.1 Pa |
Static pressure | 1000 hPa |
Overload | 50 hPa |
Zeroing | to 0.5 hPa |
**Sensor is not suitable for long-term measurements
Differential pressure (external probe) – Piezoresistive | |
---|---|
Measuring range | 0 to 2000 hPa |
Accuracy | ±0.1 % of mv* |
Resolution | 0.1 Pa (0638 1347)
0.01 hPa (0638 1547) 0.001 hPa (0638 1447) 0.1 hPa (0638 1847 / 0638 1647) |
*Accuracy information applies only to instrument without probes connected
Differential pressure (external probe) – Ceramic | |
---|---|
Measuring range | -1 to 400 bar |
Accuracy | ±0.2 % of fsv* |
Resolution | 0.01 bar |
*Accuracy information applies only to instrument without probes connected
General technical data | |
---|---|
Dimensions | 219 x 68 x 50 mm |
Operating temperature | 0 to +50 °C |
Product-/housing material | ABS |
Channels | 2; 1 |
Measuring rate | 0.04 s |
Connection | Hose: inner Ø 4 mm outer Ø 6 mm |
Battery type | 9 V (6LR61) |
Battery life | Continuous operation w/ internal pressure sensor: 30 h; With rech. battery: 10 h; With carbon battery: 18 h |
Display type | LCD (Liquid Crystal Display) |
Display function | 7 segment display and point matrix |
Display update | 2x per second, in fast measurement 4x per second |
Power supply | Battery/Rechargeable battery,Mains unit 12 V |
Interface | RS232 |
Memory | 100 kB; 25,000 measuring values |
Storage temperature | -20 to +70 °C |
Weight | 300 g |
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