Teledyne 2020 - Explosion proof thermal conductivity analyzer - Manual (Page 22)

Teledyne Analytical Instruments
3 Installation Model 2020
3-4
3.3.2 Fuse Installation
The fuse block, at the right of the power cord receptacle, accepts US
or European size fuses. A jumper replaces the fuse in whichever fuse
receptacle is not used. Be sure to install the proper fuse as part of installa-
tion. (See Fuse Replacement in chapter 5, maintenance.)
3.3.3 Voltage Selections
There is a switch on the interface board, inside the instrument, that
selects the working voltage between 230/115 VAC.
Voltage Selector Switch
Make sure the switch is in the proper position before
powering the instrument.
3.3.4 Analog Outputs
There are four DC output signal connectors on the panel. There are
two wires per output with the polarity noted. See Figure 3-4. The outputs
are:
0–1 V dc % of Range: Voltage rises linearly with increasing concentra-
tion, from 0 V at 0 concentration to 1 V at full
scale. (Full scale = 100% of programmable range.)
0–1 V dc Range ID: 0.25 V = Range 1, 0.5 V = Range 2, 0.75 V =
Range 3, 1 V = Cal Range.
4–20 mA dc % Range: Current rises linearly with concentration, from 4
mA at 0 concentration to 20 mA at full scale. (Full
scale = 100% of programmable range.)
4–20 mA dc Range ID: 8 mA = Range 1, 12 mA = Range 2, 16 mA =
Range 3, 20 mA = Range 4.
230V
115V