The QLS-1 is a Quadruple Output Loop Splitter/Retransmitter with common mode isolation between input and outputs. It overcomes problems of simply placing loads in series in a single 4 to 20mA loop. In such a configuration, the devices in the loop cannot share a common ground, but must be electrically floating, which is often not possible. The transmitter voltage compliance limit may be exceeded, since the voltage drops across loads in series are additive. Each output loop provides two potentiometers for ±10% fine adjustment of zero and span. This allows a multimeter to be used to measure the loop current without breaking the loop.

• Accepts a 4-20 mA, 1-5V, 0-5V or 0-10V input signal
• Drives four (4) independent 4-20 mA outputs proportional to input
• Signal input and outputs can share a common ground
• Remote grounds can differ by up to ±10V from local signal ground
• Opening any output loop does not affect the other loops
• ±10% zero and span fine adjustments for each output loop
• Loop current test point for each output, where 200 mV = 20 mA
• Indicator LED for each connected output
• Powered by 85-264 Vac or 10-48 Vdc (optional)
• Powers a 2- or 3-wire input transmitter at 24V with up to 30 mA
• 22.5 mm (0.9″) wide case snaps to 35 mm DIN rail
• Weighs only 159 g (5.6 oz)