Teledyne OT-3 operating instructions Primary Input Power, Analog Outputs

Trace Oxygen Analyzer Installation

Figure 3-1: Electrical Connectors for AC Control Unit

3.3.1 Primary Input Power

A detachable power cord is installed directly into the Control Unit and connects to a three pin terminal block on the rear panel. The terminal block is provided for customer AC wiring.

The universal power supply allows direct connection to any 100-240 VAC, 50/60Hz power source. The fuse block, to the right of the power cord receptacle, accepts two 5x20mm 0.5 A, 250V, IEC time-lag (T) fuse. (See Fuse Replacement in chapter 5, Maintenance.)

For DC powered units, the customers DC power wiring is attached to the two pin terminal block located on the rear of the control unit. See Figure 1-3.

3.3.2 Analog Outputs

There are three DC (four on AC units) output signal connectors with screw terminals on the panel. There are two wires per output with the polarity noted. See Figure 3-1. The outputs are:

∙

∙

0–10 V % Range: Voltage rises with increasing oxygen concentration, from 0 V at 0 percent oxygen to 10 V at full scale percent oxygen. (Full scale = 100% of programmed range.)

0–10 V Range ID: 3.33 V = Low Range, 6.66 V = High Range, 10 V = Air Cal Range.

Teledyne Analytical Instruments 15