Define Instruments Sentry universal voltage trip amplifier
Define Instruments has announced the launch of its new product: the Sentry trip amplifier. The Sentry is a compact, DIN rail mountable signal conditioner measuring just 0.91" wide. Described as the “Swiss Army knife” of trip amplifiers, its primary use is in industrial monitoring and alarming applications. The Sentry "watches over" scenarios where monitoring is vital (e.g. monitoring the temperature of cold storage for foodstuffs), and alarms when signals exceed safe parameters.
The Sentry accepts seven signal input types: Potentiometer, V, Tc, mA, Freq, NTC and RTD, and works with both AC or DC voltage. This provides in-field flexibility as it can be plugged in to whatever power source is available and eliminates the risk of the unit being accidentally blown up by use of an incorrect power supply. It has 2 relay outputs for alarm or control applications and an optional isolated analogue output, which converts signals to 0-10V or 4-20mA for forwarding to a PLC or SCADA systems.