Refineries and petrochemical plants use steam to heat vessels and different parts of their process units and if steam pressure rises too high it could create a dangerous situation. Monitoring and alarming on steam pressure adds a layer of protection for personnel and process. But many times these points are remotely located where it isn’t practical to run multiple twisted pairs to and from the control room or closest PLC.
When remote alarms or layers of protection are required, look to the SPA2 Site Programmable Alarm Trip. The SPA2 is push button or PC programmable alarm trip, or trip amp, that offers high, low, rate of change, fault, out of range, input failure alarm types. Fitted with a universal power supply, it has up to four programmable SPDT alarms with an optional auxiliary analog output and a loop power supply for powering two-wire transmitters. The SPA2 is approved for installation in Class I Div 2/Zone 2 locations.
- Versatile and easy programming with push buttons or PC software
- Up to four SPDT relays rated at 5A 250VAC/24VDC
- Suited for installation in Class I Div 2/Zone 2 locations