Indication, switching and transmission in one device
July 20, 2009
The Electronic Pressure Controller is an extremely versatile compact package that can replace a separate gauge, two switches, and a transmitter in a system saving money, installation time, and panel space. The EDA incorporates two SPDT relays that have the on and off points fully adjustable over the range for control or alarm use. Front face has LED indicators for switch status and a large backlight two-line display showing process value and indication units. Programming is easy with simple menu structure, two-line display, and external programming buttons. Weatherproof housing is ideal for a wide variety of applications with panel mount, flush mount, or pipe mount ability. Key features include programmable display units of psi, kg/cm2, bar, in Hg, ft w.c. kPa, MPa, %FS, in w.c., mbar, cm w.c., mm Hg, or oz/in. Test mode simulates the input over the range without pressuring to easily test switches and transmitter output option. Failsafe for sensor failure, over pressure, high temperature limit, low temperature limit, or keypad short where the user chooses if relay is de-energized, energized, or no action. With transmitter option, user chooses an output of 3.6 mA, 22 mA, or no action. Also includes selectable alternation of set points between the relays for even wear on duplex pump applications. Other features are zero set, adjustable dampening, menu lock out, peak and valley indication, removable terminal blocks, adjustable time delay, and scalable transmitter output. All 316 SS wetted materials, ±1% of full-scale accuracy.