Teledyne OT-3 operating instructions Rear Panel Description, Measurement Parameters Readout

Introduction OT-3

Meter Readout: As the meter readout, it displays the oxygen concentration currently being measured.

Measurement Parameters Readout:

It also displays user-definable alarm setpoints, ranges, and span calibration point when they are being checked or changed.

1.4Rear Panel Description

The rear panel contains the electrical input and output connectors. The connectors are described briefly here and in detail in the Installation chapter of this manual. The rear panels for the AC and DC versions are different. Figure 1-2 shows the AC version while Figure 1-3 shows the DC version.

Power Connection AC version:

100–240 VAC, at 50/60Hz. The connector housing includes the fuse holder and AC Power cord receptacle.

Fuse Holder DC version:

Replacing the fuse is described in Chapter 5, Maintenance.

Analog Outputs:

0–10 VDC concentration output.

0–10 VDC range ID (or optional overrange) output. 4–20 mA DC concentration output, negative ground.

Alarm Connections:

Alarm 1, Alarm 2, and Power Failure Alarm connections.

Sensor Connector:

Internal Sampling System, Sensor Connector.

RS-232 Port:

Serial Digital Output of concentration and range signals.

SSR POWER (AC POWER UNITS ONLY):

+15 VDC power output for powering Solid State Relays.

Teledyne Analytical Instruments 4