Set The Co2 Content; Co2 Control And Indicators - Thermo Scientific 3907 Operating Manual

| Product Description
Chapter 5
|
5-4 Model 3907 & 3948
Only connect CO sources to the CO
2
than CO might damage the unit.
2
Set the CO Content
2
The Watlow CO controller's upper display shows the actual CO
2
chamber. The lower display shows the CO
To set the CO content (0% to 20%), press the Up or Down arrow keys on the Watlow
2
PM6 Controller.
CO
sample
2
alarm
port
POWER
Watlow PM6 Control
Figure 5-4
CO Control and Indicators
2
Sample Port - The sample port is used for checking CO
chamber by an independent test instrument (such as with a Fyrite, or similar CO
instrument).
To prevent CO loss, the sample port must be capped when it is not in use.
2
CO Alarm - The CO alarm is factory set to activate when the chamber CO
2 2
deviates from configured alarm set points (see "Configuration Record" on page 13-8).
When a CO alarm occurs, the CO
2
audible alarm sounds.
The CO alarm high and low setpoints are established through the Watlow PM6 CO
2
controller (A.LO and A.HI). Refer to the "Configuration Record" on page 13-8.
inlet. Connecting sources of other gases
2
setpoint.
2
percentage in the environmental
2
Alarm indicator on the control panel lights and the
2
content inside the
2
test
2
content
2
2
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