OMEGA's DMD4008 accepts a resistance input from potentiometer, slidewire, linear position, displacement, or rotational devices and provides an optically isolated DC voltage or current output that is linearly related to the potentiometer position. It will accept any potentiometer with a value of 0 to 100 ohms through 0 to 1 Megohms without recalibration and without affecting accuracy. The DMD4008 output can be field configured via external rotary and slide switches, Offsets and/or input ranges other than 0 to 100% of the potentiometer range can also be selected.
Specifications Potentiometer Input Ranges: Field selectable ranges via switch settings 3 wire connection required Minimum: 0 to 100 Ω Maximum: 0 to 1 Megohms Input Span: 10 to 100% of potentiometer range Input Offset: 0 to 90% in 10% increments Input Impedence: 10 Megohms minimum Output Ranges: Field selectable ranges via switch settings Voltage: 0-1 V to 0-10 Vdc, 10 mA maximum Bipolar Voltage: ±5 Vdc or ±10 Vdc Current: 0-2 mADC to 0-20 mAdc 20V compliance, 1000 Ω at 20 mA Output Linearity: Better than ±0.1% of span Output Zero and Span: Multi-turn potentiometers to compensate for load and lead variations, ±15% of span adjustment range typical. Output Loop Supply Power: 20 Vdc nominal, regulated, 25 mAdc maximum, ripple, less than 10mVrms may be selectively wired for sinking or sourcing mA output Output Test: Front button sets output to test level when pressed, potentiometer adjustable 0 to 100% of span Response Time: 70 milliseconds typical Common Mode Rejection: 120 dB minimum Isolation: 1200 Vrms minimum Full Isolation: power to input, power to output, input to output Ambient Temperature Range and Stability: -10°C to 60 operating ambient; better than ±0.02% per °C stability Standard Power: 60 to 265 Vac, 50/60 Hz or 85 to 300 Vdc, 2W maximum Low Voltage Option: 9 to 30 Vdc, or 10 to 32 Vac Housing: Mounts to standard 35 mm DIN rail, IP40 environmental rating Connectors: Four 4-terminal removable connectors 14 AWG maximum wire size Dimensions: 22.5 W x 117 H x 122 mm D (0.89 x 4.62 x 4.81') height includes connectors