testo 526-2 - High-precision differential pressure measuring instrument

Order-Nr.  0560 5281

  • 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 high-precision differential pressure measuring instrument is 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.

Product Description

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. 

 

Delivery Scope

testo 526-2 high-precision differential pressure measuring instrument, including quick-release connections, calibration protocol and batteries.
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)

0.01 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

Housing

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

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

Absolute pressure probes

Absolute Pressure

Measuring range

0 to +2000 hPa

Accuracy

±5 hPa

Overload

4000 hPa

Differential pressure probes

Differential Pressure - Piezoresistive

Measuring range

0 to +100 Pa

Accuracy

±(0.3 Pa ±0.5 % of mv)

Resolution

0.1 Pa

Overload

50 hPa

Differential Pressure - Piezoresistive

Measuring range

0 to +10 hPa

Accuracy

±0.03 hPa

Resolution

0.001 hPa

Overload

50 hPa

Differential Pressure - Piezoresistive

Measuring range

0 to +100 hPa

Accuracy

±0.1 hPa (0 to +20 hPa)

±0.5 % of mv (+20 to +100 hPa)

Resolution

0.01 hPa

Overload

300 hPa

Differential Pressure - Piezoresistive

Measuring range

0 to +1000 hPa

Accuracy

±1 hPa (0 to +200 hPa)

±0.5 % of mv (+200 to +1000 hPa)

Resolution

0.1 hPa

Overload

2000 hPa

Relative pressure probe

Pressure measurement

Measuring range

-1 to +10 bar

Accuracy

±1 % of fsv

Overload rel. (low pressure)

25 bar

Pressure measurement

Measuring range

-1 to +30 bar

Accuracy

±1 % of fsv

Overload rel. (low pressure)

120 bar

Temperature probes

Additional accessories and Spare parts

9V rech. battery for instrument

Order Number: 0515 0025

ZAR 217.80
Recharger for 9V rechargeable battery

Order Number: 0554 0025

ZAR 199.65

Certificates

ISO calibration certificate/Pressure

Order Number: 0520 0035

ZAR 4,911.00
DAkkS calibration certificate/Pressure

Order Number: 0520 0205

ZAR 9,055.00
ISO calibration certificate/Pressure

Order Number: 0520 0405

ZAR 5,521.00

Software and Accessories

RS232 cable

Order Number: 0409 0178

ZAR 1,070.85