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
Features
Calibration via
Lifetime cal
Input Types
DC Volts/Current, RTD, Thermocouple,
Isolation
2500V Input/Output and channel/channel
Mounting
DIN rail
Output Types
0-20mA, 4-20mA dc, 0.5V dc
Power
Loop or 16.8 to 31.2V dc
Special Features
Splitter, Isolation Linearisation
Wiring
Fixed terminals
