Typical PDM - Micromanometer Applications:

•  Measurement of system pressures in heating, ventilation and air conditioning  (HVAC) systems
•  Perfect for HVAC technicians performing Pitot tube traverses of airflow readings across a duct
•  Monitoring differential pressure across filters and coils in HVAC systems
•  Measuring positive and negative pressure in air conditioning ducts
•  Measuring differential pressure for clean room monitoring

Dwyer Series 477-FM Digital Manometers
Intrinsically Safe with ±0.5% Accuracy

The Series 477-FM portable digital micromanometers (PDM) includes 11 meters with ranges from 0-200" H2O / 0-150 psi and measure positive, negative or differential pressures. Users can select to display from 9 switchable pressure units: psid, inch H2O, mm H2O, inch Hg, mmHg, kPa, Pa, bar, mbar. The Dwyer 477-FM is approved Intrinsically Safe for Hazardous Locations, Class 1, Div. 1, Group A, B, C, D, T4.

Graywolf Sensing Solutions / Solomat Zephyr II+
Micromanomter with HVAC 3-Function Probe

The Graywofl/Solomat Zephyr II+ Micromanometer with 3-function probe are designed to measure differential pressure, static pressure and temperature. The Zephyr II instruments have a built-in auto-zeroing micro-manometer, a 'K'-type thermocouple input and 2 BIN type connectors. Used with a pitot tube, the Zephyr II provides direct air velocity readings. Optional probes such as the telescoping 3-function “smart” probe for temperature, humidity and air flow (hot wire) can be quickly connected. The auto-zeroing feature allows for highly accurate differential pressure logging over time.

Testo Pocket Pro 510 Micromanometer
Differential Pressure & Velocity

The Testo 510 PocketPro portable digital micromanometer has a measurement range of ±40" H2O, with air density compensation and a display resolution of 0.01" H2O. User can select from 10 units of measurement: hPa, mbar, Pa, mm H2O, mm Hg, in H2O, in Hg, psi. It will display air velocity in fpm or m/s when used with an optional Pitot tube. A magnetic back aids in hands free use. Is not intrinsically safe.

Sper Scientific Digital Manometers
Differential Pressure and Velocity

Ideal for measuring low differential pressure in clean rooms, test and balance, medical equipment, HVAC, pneumatic systems and computer peripherals. Portable, and weighing only 5 oz (150 g) including the battery, these meters are convenient for use in the lab, field or factory. Five models are available covering a wide range. All read gauge, and differential pressure in up to 11 units of measure and feature large backlight display, max-min, hold, and auto power off functions. The RS232 port enables communication with a computer. High accuracy of ±0.3% fs at 25ºC, repeatability: ±0.2% (max ±0.5%) FSO, and combined linearity and hysteresis: ±0.2 (Max ±1.0%) FSO.