Signal preamplifier 4021

compactruggedisolated

Signal amplifiers are used to transform the sinusoidal output of a Variable Reluctance Speed Sensor to a digital output (square wave signal) at the same rate as targets passing by. Several housing options are available. Puck styles can be mounted in electrical cabinets or dropped into many conduit elbows and enclosures. Plug-in styles can mount directly to VR Speed Sensors with connectors. Compact In-line styles can be added into wiring bundles or inside conduit. A Noise Cancelling Amplifier with additional noise filtering is also available for critical applications. This version also offers two separate output signals for driving two different systems or for prover applications. An optional third output can be included which can be optically isolated. A special Directional Sensing Signal Amplifier can be used with two appropriately placed VR Speed Sensors to determine a target’s speed and direction of rotation. Intrinsically Safe and Explosion/Flame Proof versions are also available for Hazardous Locations. The 4021 Noise Canceling Amplifier optimizes the performance of Spectec's unique Noise Canceling Pickup Coil, as well as providing superior performance with standard variable reluctance coils. This new rugged amplifier is specifically designed for tough pipeline, offshore platforms, and severe industrial applications. On-site mobile meter proving is easily accomplished via the independent terminal Il connection without causing interruption or interference to the main signal transmission. Maintenance and calibration technicians can readily plug into terminal block Il and connect mobile readout instruments or prover electronics.