Teledyne 3300TB, Operating Instructions Manual, Page: 29 / 51

Installation Model 3300TB
Teledyne Analytical Instruments 16
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 .)
The power switch is located on the right-hand end of the power
source input receptacle assembly.
Analog Outputs: There are three DC output signal connectors with
screw terminals on the panel. There are two wires per output with the
polarity noted. See Figure 3-3. 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: 03.33 V = Low Range, 06.66 V = High
Range, 10 V = Air Cal Range.
4–20 mA % Range: Current increases with increasing oxygen
concentration, from 4 mA at 0 percent
oxygen to 20 mA at full scale percent
oxygen. (Full scale = 100% of
programmed range.)
Alarm Relays: The three alarm-circuit connectors are screw
terminals for making connections to internal alarm relay contacts. There
is one set of contacts for each type of alarm. Contacts are Form C, with
normally open and normally closed contact connections capable of