TESTO 521-3 Differential Pressure Measuring Instrument

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

Product-/housing material: ABS

Channels: 2; 1

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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