Also available as "air meter" to determine air conditioning consumption, see this chapter:
Measuring volume flow and air consumption
Differential pressure transmitter with scalable measuring range and a high level of overpressure protection
The P 26 differential pressure transmitter is designed for pressure monitoring applications in cleanrooms, laboratories, pharmaceutical plants and operating theatres as well as for special uses in machine and plant construction. As well as measuring the differential pressure, the instrument also records positive and negative overpressures as well as flow rates or volumetric flows.
The measuring range is scalable in the range from 10 .. 100 %. Two optional contact points allow the user to connect visual or audible alarms that are triggered any time values rise above or fall below specified limits. The transmitter can be configured easily via an USB interface (optional) with software. This can also be performed using a keyboard and display (optional). The measured values can be displayed in all standard units. A selectable time constant allows the transmitter to be adjusted perfectly to the pressure conditions and thus ensures a stable output signal. The P 26 can be mounted either on a wall or on top-hat rails.
10 / 50 / 100 / 250 / 500 Pa
1 / 2.5 / 5 / 10 / 20 / 50 / 100 kPa
freely scalable from 10 .. 100 % within a measurement range
(others available on request)
Margin of error
± 0,2 % or ± 0,5 % of the scaled range (40 .. 100 % of max. value, min. 0.3 Pa)
Output (linear / root-extracted)
0 .. 10 V (RL ≥ 2 kΩ)
0 .. 20 mA (RL≤ 500 Ω)
4 .. 20 mA (RL≤ 500 Ω)
± 5 V (RL ≥ 2 kΩ)
(output signals can be configured freely)
24 VAC/DC, ± 10 %
24 VAC, +6 % (with galvanic seperation)
230/115 VAC, -15 %
USB, data cable supplied
External zero-point calibration
multi-coloured LCD and keyboard
The instrument is available with an ISO factory calibration or DAkkS calibration certificate (optional).