V Office 2, VO2-03-12,
Lingkaran SV, Sunway Velocity, Jalan Peel,
55100 Kuala Lumpur,
Malaysia.
+603-2742 7468
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Muser Apac Sdn Bhd
V Office 2, VO2-03-12,
Lingkaran SV, Sunway Velocity, Jalan Peel,
55100 Kuala Lumpur,
Malaysia.
V Office 2, VO2-03-12,
Lingkaran SV, Sunway Velocity, Jalan Peel,
55100 Kuala Lumpur,
Malaysia.
Testo 521-3 - Differential Pressure Measuring Instrument (up to 2.5 hPa) [SKU 0560 5213]
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testo 521-3 - Differential Pressure Measuring Instrument (up to 2.5 hPa)
- 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
Product Description
The testo 521-3 differential pressure measuring instrument is designed for high-precision differential pressure measurements in air conditioning and ventilation technology. It can be used, for example, for measurements in clean rooms and for flue inspections – thanks to a high level of accuracy and outstanding resolution. In conjunction with a Pitot tube (optional), the integrated pressure sensor measures flow velocities of +1 to +20 m/s.
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
testo 521-3 differential pressure measuring instrument, including calibration protocol and batteries.
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 |
| 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 |
| 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 |
| 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) |
| Differential pressure (external probe) - Ceramic | |
|---|---|
| Measuring range | -1 to 400 bar |
| Accuracy | ±0.2 % of fsv* |
| Resolution | 0.01 bar |
| General technical data | |
|---|---|
| Dimensions | 219 x 68 x 50 mm |
| Operating temperature | 0 to +50 °C |
| Housing | ABS |
| Channels | 2; 1 |
| Warranty | 2 years |
| 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 |
| 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 |
Downloads
Product Brochures
Product brochure testo 521 (PDF, 649 KB)
Manuals
Instruction manual testo 521 und testo 526 (PDF, 944.5 kB)