The Wohler USA DC 100 PRO (7274) Pressure Meter is a high-precision, multifunctional meter for capturing differential pressure, temperature, and humidity. The high precision of the instrument not only registers minimum pressures in the 0.01 Pa range for flow rate and gas pressure measurements, but also determines volumes for measuring draughts with the simultaneous registration of exhaust gas temperatures. For higher pressure ranges, the instrument is capable of a maximum measuring range of 100 hPa and a rupture pressure of 0.75 bar. While capturing measurements, the user is guided by the simple-to-understand instructions on the screen.

Due to the high measuring accuracy, the DC 100 PRO is ideal for detecting and inspecting low pressure in a closed air loop with simultaneous operation of a combustion installation and an exhaust gas system. With a S-type Prandtl tube connected, the instrument can evaluate the ventilation loss of boilers during the evaluation of the energy efficiency. This instrument can also determine the volume of a closed and airtight room such as a tank, bottle, or pipe. A defined sample volume will be taken from the room and then the total volume will be calculated using the pressure change that results from this.