testo 526-2 Precise Differential Pressure

$2,021.80 inc. GST

Key Features:  

Temperature-compensated differential pressure sensor

Multi-point and timed mean calculation

Built in test menu's to check pressure drops

2 probe sockets to connect additional probes for
measuring pressure, temperature, current/voltage key 


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The testo 526-2 (0 to 2000hPa 0.05% acc), is the differential pressure meter for industrial applications. Ideally suited for checking pressure in sensitive industrial processes, thanks to a measuring accuracy of ± 0.05% of final value. Two additional pressure and temperature probes can also be attached.


• Temperature-compensated differential pressure sensor

• Multi-point and timed mean calculation

• Freely selectable measuring rate for recording measurement data

• 2 additional probe inputs for the attachment of optional pressure and temperature probes

The testo 526-2 is a high-precision differential pressure measuring instrument. It has an internal sensor with a measuring range from 0 to +2,000 hPa. The differential pressure can be determined particularly precisely: to an accuracy of ± 0.05% of final value

testo 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.

Whats Included: Testo 526-2, Calibration protocol

Technical Data

Storage Temperature -20 to + 50°C
Operating temperature -50 to + 45 °C
Battery Type  AA Alkaline 
Housing  ABS
Dimensions 219 x 68 x 50 mm


Instrument Sensor 

Piezoresistive pressure sensor

Ceramic sensor for 
external pressure probes

Piezoresistive pressure sensor For 
external pressure probes


Type K (NiCr-Ni)

Measuring range 0 to 2000 hPa -1 to 400 bar 0 to 2000 hPa -40 to +150 °C -200 to +1370 °C
Accuracy ±1
±0.05 % of fsv ±0.2 % of fsv ±0.1 % of mv ±0.2 °C (-10 to +50
±0.4 °C (remaining
±0.4 °C (-100 to
+200 °C)
±1 °C (remaining
Resolution 0.1 hPa 0.01 bar 0.1 Pa (0638 1347)
0.001 hPa (0638 1447)
0.01 hPa (0638 1547)
0.1 hPa (0638 1647; 0638 1847)
0.1 °C 0.1 °C
Static pressure 2000 hPa (abs)  
Overload 3000 hPa
Zeroing to 50 hPa



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