Jul 15 2010
The AST4000 pressure sensor which can defy mechanical, electrical and environmental hazards via a three digit preference code has been released by American Sensor Technologies, Inc (AST) for determining hydraulic pressure in diverse applications.
The AST4000 employs AST’s Krystal Bond Technology. Here the pressure port is fabricated from one piece of stainless steel. Instead of welding or clamping the diaphragm, AST controls the pressure sensing constituent from a bar made up of high strength stainless steel, ensuing in low stress to strain curve of the diaphragm, thereby churning out replicating results, stability on a long term basis and high cycle life.
This sensor is available in choice or select packages which are able to endure pressure variations from normal to hydraulic applications, and occurs with either a standard 2x proof pressure or a 4 x proof pressure with a restrictor plug identified as snubber which is soldered inside, thus reducing the internal diameter of the pressure port by moistening the pressure spikes prior to reaching the diaphragm of the sensor. The snubber also helps in lessening the entire length, cost and possible leak points in the system.
The AST4000 can be ensconced in any system. As it is devised with different pressure port threads like NPT, SAE and metric configurations.
The sensor’s stainless steel frame and the sensing element collectively shield the sensor from environmental conditions. Cable or connector configurations safeguard the electronics of the sensor from water, dust and moisture intrusion wherever they have been installed either outdoors or on equipments which are subjected to high pressure conditions.
The AST4000 series comes along with assorted output signals. A 4–20mA output signal can be used for long transmissions. For low current consumption applications, voltage output signals are used. For hydraulic applications that need a quick response time, the 10mV/V output signal is normally used. The millivolt output signal with a bandwidth of (3dB): DC to 5 kHz, min is available for those clients who need to observe pressure transients.
Source: http://www.astsensors.com