The Pressure Computer DC 2000PRO is a high-precision multifunctional meter for registering differential pressures, flow rates, temperatures, and humidities (optional). From the basic version on, this device exhibits an extremely wide dynamic range that not only takes highly sensitive measurements of minimum draughts and gas pressures in the pascal range but also lets the user measure leakage rates and examine sealing properties for main assessments as per DVGW-TRGI and conduct measurements for load tests during pre-assessments. A maximum measuring range of 2 bar and a rupture pressure of 3 bar also provide for adequate safety at higher pressure ranges. During all measurements, the user is guided by plaintext instructions on the display.

This device, which can store all measured values in a logger, can also be used for measurements of (ambient) climates. This is made possible by a temperature sensor also integrated as a standard in addition to the pressure sensor. Optionally, the range of applications can be expanded with an external temperature sensor. Depending on the selected scan rate, all measured values can be logged for several years and transferred to a PC via the integrated IrDA interface. Measurement records can be sent to a thermal printer for printouts with the company logo. If needed, continuous IrDA transfer can be activated in the Setup menu so that during measurements all four measured values (pressure, external and internal temperature, and humidity) and their respective channel numbers are transferred to a PC every second.

The extremely low current consumption is made possible by an all-new processor technology that automatically and dynamically adapts the power draw to the measuring task. Also, the mode with the maximum current consumption (6 mA) runs continuously for over 300 hours on two standard AA batteries (2 Ah). In logger mode, the device can run on the same batteries and without memory overflow for several years when the scan rate between two measurements is 4 h (4680 measurements x 4 h). The pressure meter can be used on both gaseous media (air or inert gas) and liquids, e.g. water or fuel oil. In this case, it is important to observe that remains of liquid at the pressure connections can falsify the result of the following gas measurement. Therefore, the device should no longer be used on gaseous media, after it has been used to measure liquids.

The Wohler DC 17 can also be used for measuring the oil throughput of oil nozzles, thus permitting adjustment of the set combustion capacity. The installed program even takes systems with and without oil preheating into account. The DC 17 can be used to check or set the „under pressure“ side (i. e. suction side) and the overpressure side of the oil pump, according to the technical regulations for oil installations. This setting can be then documented with the help of a thermal printer.

The processor’s arithmetic and logic unit (ALU) can perform simple operations on the measured values so that, for example, the leakage rate is automatically displayed in l/h or the flow rate measured with a Prandtl’s tube in m/s.

Applications:

• Stress and leakage test for gas lines
• Measurement of pipe volume
• Stress and leakage test for water pipes
• Gas appliance tuning
• Air speed measurement with optional pitot tubes
• Data logger