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Action instruments Q404-4 dc input isolator
Action Instruments Q404-4 DC Input Isolator, Signal Splitter
* Protects Equipment and Prevents Ground Loops with 2,000 VAC Isolation
* Multi-Channel Configuration: 1 in / 2 out
* High Density DIN Rail Mounting
* SnapLoc, Plug-In Terminals for Low MTTR
The action I/Q model Q404 is a DIN rail mount, DC input signal conditioner, with 2,000 VAC isolation between input output and power. Available as a multi-channel signal conditioner (1 input/2 outputs), the Q404 maintains the high 2,000 VAC isolation from channel to channel, as well as input to output to power.
Factory configured input and output ranges support standard industrial control signals such as 4-20mA. Front accessed zero and span potentiometers allow adjustment of offset and gain to compensate for sensor errors or signal losses.
All Action I/Q modules feature SnapLoc, plug-in screw terminals for easy installation and low Mean-Time-To-Repair (MTTR). If desired, two or more modules can slide together and interlock for solid, high density mounting. This is accomplished by removing either the DIN rail foot or the adjacent unit's face plate, for right side or left side mounting, respectively. The module to be attached will easily slide onto the side of the mounted unit.
DC input four-wire transmitters are used to isolate and convert DC voltage or current signals into proportional, standard industrial control signals such as 4-20mA. Typically an industrial control system such as a DCS or PLC requires standard industrial control signals with full isolation to ensure reliable, strong signals.
In most industrial process control or data acquistion applications, several different input sources, including voltages and currents from various field instruments (e.g. level, flow, pressure, and position sensors), are common. Four wire transmitters accept these field inputs and provide the controller (DCS & PLC) the standard industrial signals they require. The four wire transmitter will increase the signal drive to high impedence loads and may improve resolution of the process variable.
The 2,000 VAC isolation capability of the Q404 prevents ground loops from causing errors in DC voltage and current signals and may reduce susceptibility to Electro Magnetic Interference (EMI) and Radio Frequency Interference (RFI). Isolation also provides protection from high voltages and current spikes which may damage expensive Supervisory Control And Data Acquisition (SCADA) equipment.
