Testo 420 Differential Pressure Measuring Instrument

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DESCRIPTION:

The testo 420 differential pressure measuring instrument is suitable for accurate differential pressure measurement up to 120 Pa, e.g. when checking filters in HVAC systems. Flow velocity and volume flow are calculated by the testo 420. The measuring instrument can also be used for absolute pressure measurement. You can use a Pitot tube and compatible connection hoses (both optional) to measure the flow velocity and volume flow in ventilation ducts. Timed and multi-point mean calculation, as well as the combination of the two along with simple input of the duct geometry provide you with support for measurements in ducts.
The automatic zeroing ensures higher accuracy for low pressures. All measuring values are easy to read on the large display which has an illumination function. Measurement data can be stored in the differential pressure measuring instrument for analyses and documentation. It's easy to manage the measurement data on the PC without any additional software, via the plug & play function.

TECHNICAL DATA:
Differential Pressure - Piezoresistive
● Measuring Range: -120 to +120 Pa
                                       +0.1 to +14 m/s
● Accuracy: ±2 % of mv + 0.5 Pa at +22 °C, 1013 hPa
● Resolution: 0.001 Pa
                          0.01 m/s
● Reaction Time: 1 s (t₉₀)
Absolute Pressure
● Measuring Range: 700 to 1100 hPa
● Accuracy: ±3 hPa
● Resolution: 0.1 hPa
● Reaction Time: 1 s
General Technical Data
● Dimensions: 150 x 85 x 35 mm
● Operating Temperature: -5 to +50 °C
● Storage Temperature: -20 to +60 °C
● EU-/EG-Guidelines: EU-guideline 2014/30/EU
● Bettary Type: Alkali manganese, mignon, type AA
● Bettery Life: 40 h
● Display Size: 3.5 inch
● Display Function: Dot matrix
● Display Ligthing: With illumination
● Interface: Micro-USB
● Memory: 2 GB (internal)
EQUIPMENT INCULDES:
● Testo 420 differential pressure measuring instrument including batteries and calibration protocol
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