Teledyne 7300A manual Gain Preset

4 Operation Model 7300A

Select STANDBY to restart the system.

4.9.3 Gain Preset

NOTE: This function will apply only for the analizer that has multiple range and non-linearity.

For nonlinear application, the signal produced by the infrared detector, will not correspond to the actual gas concentration. The amplification of each range will not agree, therefore, the gain must be preset in order for the signal to read linearly. To set the gain, the following must be performed in sequence.

NOTE:Before setting up this feature, you must have a span gas containing 90%-100% of the lowest range of the analyzer.

1. Set unit range to lowest range.

NOTE:For output reversal, the lowest range should be range 3, else the lowest range is range 1.

2.Connect span gas to span inlet.

3.Use UP/DOWN key to scroll to the CAL-INDEPD function.

4.Hold Escape/Enter control to ENTER position for approximately 10 seconds until the upper right connect display “ok” message.

5.Use UP/DOWN scroll to select SPAN function, then setup the setting to span level. Press ENTER key to span.

NOTE:You must do step #5 before the analyzer return to analyze mode. If the analyzer returns to analyze function, you must repeat step 3-5 again.

6.Set range to nex range’

7.Repeat steps 3-5 until you reach the last range of the row.

4-34 Teledyne Analytical Instruments