Fluke Hart Scientific 9150, Руководство пользователя

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Controller Operation
8.5 Secondary Menu
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8.5 Secondary Menu
Functions which are used less often are accessed within the secondary menu.
The secondary menu is accessed by pressing “SET” and “EXIT” simultaneously
and then releasing. The first function in the secondary menu is the heater power
display. (See Figure 4.)
8.6 Heater Power
The temperature controller controls the temperature of the furnace by pulsing the
heater on and off. The total power being applied to the heater is determined by
the duty cycle or the ratio of heater on time to the pulse cycle time. By knowing
the amount of heating the user can tell if the calibrator is heating up to the set-
point, cooling down, or controlling at a constant temperature. Monitoring the
percent heater power lets the user know how stable the well temperature is. With
good control stability the percent heating power should not fluctuate more than
±1% within one minute.
The heater power display is accessed in the secondary menu. Press “SET” and
”EXIT” simultaneously and release. The heater power is displayed as a percent-
age of full power.

Well temperature
+ Access heater power in secondary menu

Heater power in percent
To exit out of the secondary menu press “EXIT”. To continue on to the set-point
voltage setting function press “SET”.
8.7 Set-point Voltage
The set-point voltage is displayed for informational purposes and is used to
calibrate the instrument.
The value of the set-point voltage changes when the set-point temperature is
changed and also when DC1 and DC2 are adjusted.
+ Access heater power in secondary menu

Heater power in percent
Access set-point voltage

Set-point voltage in millivolts
To exit out of the secondary menu, press “EXIT”. To continue on to the
proportional band setting function press “SET”.
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