Introduction
OT-3
Teledyne Analytical Instruments
2
The Model 3300/OT-3 Control Unit has its own long list of features
including:
•
Keypad lockout feature
•
Two user settable fail-safe alarms (with a user settable 0-20
min. time delay )
•
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)
1.3
Front 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
.
