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Thermo Ramsey - Hoferick Engineering GmbH

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Digital Input/Output<br />

D.4. Analog I/O Boards (Optional)<br />

The optional analog I/O board is available in two configurations described<br />

below. Type A has one current output only, whereas, Type B has two<br />

voltage inputs and two current outputs. The Micro-Tech 3101 can support<br />

up to four analog inputs and four analog outputs.<br />

Type A: Current Output Board is a user definable 0-24/4-20 or 20-<br />

4/20-0 mA output (Appendix figure D-7).<br />

Rate<br />

Speed, or<br />

Load<br />

Optically isolated<br />

Isolated power source<br />

Voltage output by adding an internal dropping resistor<br />

Output range: User selectable 0-20mA or 4-20 mA, representing 0<br />

to 100% variable.<br />

Resistive load: 800 ohms max.<br />

Capacitive load: No limit<br />

Field wiring: Connections are made to the terminal strip on<br />

bottom edge of the analog board. Note that<br />

connector is removable for ease of termination.<br />

Appendix Figure D-6: Current Output<br />

A00701<br />

<strong>Thermo</strong> Fisher Scientific Multi-Point Calibration D-9<br />

REC 4175 Rev B

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