Isolation

A ground loop can occur if more than one ground connection is made to a single control signal. Because grounds are seldom at the same potential, an unwanted current will be generated and interfere with the control signal. Signal isolators break the ground loop current path and maintain the integrity of the measurement.

Noise Filtering

Isolators incorporate low pass filters that eliminate high frequency EMI/RFI and unwanted  signals from power lines, generators and motors.

Linearisation

Many sensors output a signal that is not linearly related to the engineering value being measured. For example, a thermocouple used to measure temperature has a nonlinear millivolt output. A thermocouple input signal isolator translates this to a standard robust linear signal such as 4 to 20 MA.

Signal Conversion

Industrial applications use a wide array of sensors to measure temperature, flow, length, speed etc. These signals may then need to be converted into a form usable by the instrumentation to which they are connected. Any sensor signal (thermocouple, RTD, DC voltage, DC current) can be converted to any standard process signal.

Omni Series Products 

SL408 OmniSLIM Isolated Converter

• Isolation and conversion of standard DC signals
• Slimline housing of 6 mm
• Power supply and signal isolator for 2-wire transmitter
• Loop supply >17 V
• DIP-switch configured

SL408-B OmniSLIM Bi-Polar Isolated Converter

• Conversion of voltage and current bipolar process signals to unipolar signals
• Multiple signal ranges are selectable via DIP-switches 
• Fast response time < 7 ms and high output load stability
• Excellent accuracy, better than 0.05 % of selected range
• Slimline 6 mm housing

SL500 OmniSLIM Loop Powered Isolator

• 1 or 2 channel input loop powered isolator
• Signal 1:1 functional range 0...23 mA
• Low input voltage drop and fast response time
• Excellent accuracy and high load stability
• Slimline 6 mm housing

SL501 OmniSLIM 2-Wire Transmitter Isolator

• 1 or 2 channel 2-wire transmitter isolator
• Signal 1:1 functional range 3.5...23 mA
• Low channel voltage drop and fast response time
• Excellent accuracy
• Slimline 6 mm housing

SL508-B OmniSLIM Bi-Polar Isolated Converter/Splitter

• Conversion of voltage and current bipolar process signals to uni-/bipolar signals
• Multiple signal ranges are selectable via DIP-switches
• Splitter function: 1 signal in and 2 signals out
• Excellent accuracy, better than 0.05 % of selected range and high output load stability 
• Slimline 6 mm housing

SL418 OmniSLIM Pt100 Converter - Isolated

• Converts process measurements from Pt100 temperature sensors to voltage or current outputs
• Multiple pre-calibrated temperature ranges are selectable via DIP-switches
• Excellent accuracy, better than 0.1°C or 0.05% of selected range
• Selectable < 30 ms / 300 ms response time
• Excellent 50/60 Hz noise suppresion
• Slimline 6 mm housing

SL558-T OmniSLIM Temperature Converter Loop Powered - Isolated

• Converts process measurements from Pt100 and Thermocouples J & K temperature sensors to an isolated passive 4...20 mA current output
• Multiple pre-calibrated temperature ranges are selectable via DIP-switches
• Excellent accuracy, better than 0.05% of selected range
• Selectable < 30 ms / 300 ms response time
• Excellent 50/60 Hz noise suppresion
• Slimline 6 mm housing