Teledyne operating instructions Front Panel Description, Introduction OT-3

Introduction OT-3

The Model 3300/OT-3 Control Unit has its own long list of features including:

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Keypad lockout feature

Two user settable fail-safe alarms (with a user settable 0-20 min. time delay )

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Two user settable ranges (from 0-10PPM – 0-9999PPM) with user selectable auto-ranging.

Power fail alarm

SSR power output (Solid State Relay power available on AC control units)

Micro processor based electronics 8 bit ADC & 18 bit DAC

Large 3 ½ digit LED O2 concentration read-out

7 button user interface keypad

Alarm condition indicator LED

100-240 VAC 50/60 Hz power (optional 9-36VDC )

0-10 VDC output

4-20 mA output

0-10 VDC range ID output

Electronic temperature compensation

Optional RS323 interface

Accuracy: +/- 2% of range (at constant temp.)

Response time: 90% in 65 sec of less @ 25 degrees C

Temperature range (0-50 degrees C)

1.3Front Panel Description

All controls are accessible from the front panel. See Figure 1-1. The front panel has seven push-button membrane switches, a digital meter, and an alarm indicator LED for operating the analyzer. These features are described briefly here and in greater detail in Chapter 4, Operation.

Teledyne Analytical Instruments 2