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Pressure and Temperature Measurement • Temperature Switches United Electric
Hazardous Location, Electronic Temperature
Switches One Series DESCRIPTION
The One Series W models are intrinsically safe (2W2D models only) and non-incendive transmitter-switches that monitor temperature. The One Series can effectively do the job of three – replacing a switch, a gauge and a transmitter. All One Series models feature patented IAW™ (I Am Working) intelligent self-diagnostics for applications where undetected faults cannot be tolerated. Set point and deadband (hysteresis) are 100% programmable, providing precise adjustments for switch cycling with unsurpassed accuracy and repeatability. Analog 4-20 mA output models provide field scalability, simplifying your PLC programming.
FEATURES D
• 3 ways to power the control - 2-wire discrete input power, Loop-powered analog input or external power supply • Liquid crystal display provides instrument health and alarm status
• IAW™ (I Am Working) self-diagnostics constantly monitor the health status of the control to eliminate the “blind switch” issue
• 2-Wire models drop in place of existing mechanical switches and use the same wiring and control schemes providing a cost-effective upgrade path • Loop-powered models provide a 4-20 mA output and include programmable solid-state relay (SSR) switches effectively replacing a transmitter, switch and a gauge • High-powered SSR models switch up to 10 amperes • Two independent SSRs combine with a 4-20 mA output for stop/start, window mode and starting permissive applications
• Solid-state design allows for switching in high cycle rate applications without degradation • Repeatability: 0.1% of full range span • Accuracy: 0.5% of full range span at room temperature • Multiple switch output and sensor options