Teledyne 7500 - Infrared gas analyzer - operating manual - Manual (Page 51)

51 Model 7500 Instruction Manual
Teledyne Analytical Instruments
6.6 Peak alarm setting
When the number of peaks of which CO concentration
exceeds the upper limit value exceeds the setting time, a
peak alarm is outputted.
This section describes how to perform various settings of
peak alarm.
Note: The setting is optional and is valid only when peak
alarm function is provided.
1. Press the MODE key in the Measurement mode, and
the User mode appears.
2. Point the cursor to “Setting of Peak Alarm” by pressing
the or key. Press the ENT key.
3. In the “Peak Alarm Setting” item selection screen
that appears, point the cursor to any item you want by
pressing the UP or DOWN key. Press the ENT key.
4. Then, enter numeric values and perform the setting.
Entering or setting the numeric values should be carried
out by using the UP or DOWN key.
After setting, press the ENT key, and the set values you
entered are saved.
Description of setting items
• Peak Alarm: Setting of peak alarm is performed with
ON/OFF.
• Alarm value: If peak concentrations exceed the set
alarm value, a peak counter counts 1 time.
• Alarm Count: When a peak in excess of the setting time
occurs, a peak count alarm output is provided.
• Hysteresis: To prevent possible chattering when the
peak value may exceed the set peak concentration by
only 1 time, the peak count has an allowance in the
hysteresis width.