Air-conditioning systems are equipped with filters which prevent dirt from the outside air entering the indoor air. These filters are inspected regularly for continuing full functionality. Pressure is measured in front of and behind the filter. The result is the differential pressure. If differential pressure is too high, the filter is contaminated and needs changing. The testo 510 digital manomenter is an all-in-one, low pressure measurement solution. It can measure total external static pressure, differential pressure, duct velocities and manifold pressures. It can measure air flow with a pitot tube (not supplied). The 510 measures differential pressures in a range of 0 - 100 hPa. The differential pressure measurement is temperature-compensated for exact readings. The readings can be displayed in pascal over the entire measuring range. Magnets on the rear of the instrument allow hands-free work.

Provides pressure, differential pressure and air velocity measurements
User-selectable units of measure (in H2O, mBar, hPa, PSI, mmH20, mmHg, Pa, inHg, fpm, m/s)
0-40 in H20 pressure measurement range
Auto or manual power-off
1-touch zeroing
Temperature and air density compensation for accurate air flow measurements
Fully-featured, temperature compensated sensor in a rugged, compact package
Backlit LCD display with 3-button operation
Magnetic back allows hands-free operation
Low battery indicator
Protective cap for safe storage
Protection to IP40
Dimensions 119 x 46 x 25 mm
Weight 90 g (with batteries and protective cap)

testo 510, belt pouch, hoses (x2), AAA batteries (x2), wrist strap, certificate of conformity

This Testo manometer measures the differential pressure in front of and behind an air filter, allowing you to tell if the filter is functioning as it should or if it's contaminated and needs changing. It helps to prevent clogged filters to ensure optimal performance. This versatile digital device can measure a range of values, including total external static pressure, differential pressure, duct velocities and manifold pressures.

• Backlit LCD (liquid-crystal display) screen for high visibility in dark work areas
• IP40 (ingress protection) rating for protection against wires and other objects greater than 1mm in size
• Wide operating temperature range of 0°C to +50°C for use in a variety of environments
• Measures pressures of up to 100hPa (hectopascals) for use in high-pressure systems

• Air conditioning and heating systems
• Offices
• Laboratories
• Factories

Yes, this device has magnets on the rear of the instrument, so you can attach it to a magnetic surface such as a metal panel or door. This allows you to use the device without having to hold it for greater ease of use.