Datasheettesto 526-2 differential pressure measuring instrument – versatile measurements thanks to additional probe inputs
Two freely assignable probe inputs enable the attachment of additional (optional) probes from Testo’s large range of probes:
- Differential pressure probes
- Absolute pressure probes
- Relative pressure probes
- Temperature probes, such as surface, immersion and penetration probes
The high-precision differential pressure measuring instrument can do even more
Measurement data can be seamlessly recorded for tightness testing on containers thanks to the testo 526-2’s test menu. To document the pressure test, there is an option enabling the measurement data to be processed and archived using software or printed out with the testo fast printer directly at the measuring location (software and printer optionally available).
The memory can record up to 25,000 readings. These are stored under their individually designated measuring locations (max. 99 measuring locations) which means they can be quickly found again. Measurement data can be saved individually or as a series of measurements. The measuring rate (0.04 seconds, 1 second to 24 hours) and the number of values to be stored can be freely selected.
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 2000 hPa
|
|---|---|
| Accuracy |
±0.05 % of fsv
|
| Resolution |
0.1 hPa
|
| Static pressure |
2000 hPa (abs)
|
| Overload |
3000 hPa
|
| Zeroing |
to 50 hPa
|
Differential pressure (external probe) – Piezoresistive
| Measuring range |
0 to 2000 hPa
|
|---|---|
| Accuracy |
±0.1 % of mv*
|
| Resolution |
0.10 Pa (0638 1347)
0.1 hPa (0638 1847 / 0638 1647)
0.01 hPa (0638 1547)
0.001 hPa (0638 1447)
|
| *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
|
| Measuring rate |
0.04 s
|
| 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
|
| Connection |
Hose: inner Ø 4 mm outer Ø 6 mm
|
| Display type |
LCD (Liquid Crystal Display)
|
| Display function |
with symbol, 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
|
