Teledyne API – Model T400 Photometric Ozone Analyzer Getting Started
45
Figure 3-8: Current Loop Option Installed
CONVERTING CURRENT LOOP ANALOG OUTPUTS TO STANDARD
VOLTAGE OUTPUTS
To convert an output configured for current loop operation to the standard 0 to 5 VDC
output operation:
1. Turn off power to the analyzer.
1. If a recording device was connected to the output being modified, disconnect it.
2. Remove the top cover
Remove the set screw located in the top, center of the rear panel
Remove the screws fastening the top cover to the unit (one per side).
Slide the cover back and lift the cover straight up.
3. Disconnect the current loop option PCA from the appropriate connector on the
motherboard (see Figure 3-8).
4.
Place a shunt
between the leftmost two pins of the connector (see Figure 3-8).
6 sp
are shunts (P/N CN0000132) were shipped with the instrument attached to
JP1 on the back of the instruments touchscreen and display PCA
5. Reattach the top case to the analyzer.
6. The analyzer is now ready to have a voltage-sensing, recording device attached to
that output.
7. Calibrate the analog output as described in Section 5.10.1.1.
