TESTO 521-1 Differential pressure measuring instrument (0.2 % of f.v.)
RM 0.00
Description
- Integrated differential pressure sensor with an accuracy of 0.2 % of f.v.
- Calculation of the flow velocity and the volume flow via Pitot tube (optional)
- Multi-point and timed mean calculation
- 2 probe inputs for additional pressure and temperature probes
- PN: 0560 5210
The high-precision testo 521-1 differential pressure measuring instrument is ideal for accurate differential pressure measurements in air conditioning and ventilation technology, for instance for pressure drop on filters, checking fans and extractors or for Pitot tube measurements.
- 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 521-1 differential pressure measuring instrument
The integrated differential pressure sensor enables the testo 521-1 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.
Furthermore, long-term monitoring is possible: in doing this, measurement data can be saved individually or as a series of measurements. The measurement rate and the number of values to be saved can be selected by the user. Dynamic measurements can be saved in the measuring instrument in the measuring cycle of 0.04 seconds.
The optional ComSoft software enables you to carry out online measurements via your PC, 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 measurement data out 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 simply by pressing a key.
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 100 hPa |
Accuracy | ±0.2 % of fsv |
Resolution | 0.01 hPa |
Static pressure | 1000 hPa (abs) |
Overload | 300 hPa |
Zeroing | to 2.5 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) |
*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 external; 1 internal |
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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