Ramp Function - Time Electronics 7000 User Manual

Time Electronics
7000 RTD Calibrator
4.4

Ramp Function

In Source Mode the calibrator unit may be set to ramp from zero (0%) to span (100%)
dwelling for a time period at the top and bottom limits.
The following assumes that the calibrator has already been set up for the correct connection,
source mode, RTD type and range as described in Source mode (Section 4.2)
Ensure that the calibrator is set for Ramp Function. The display should
•
now show a ramp symbol in the bottom section.
If not, press Ramp until the display shows the ramp symbol and start
•
to ramp.
• The output will ramp continuously from
zero to span and back to zero dwelling at
the limits.
To reverse ramp direction, press either Increment or
•
Decrement buttons.
If the button is pressed again twice the ramp will return to the ramp start, i.e. if
•
ramping up it will return to 0% and if ramping down it will return to 100%.
To restart the ramp up from 0% press
o
To restart the ramp from 100% press
o
The Dwell period T1 (seconds) and Ramp rate Ω/S (ohms/second) are programmable.
To change them follow the Ramp rate and Dwell time Set-up Procedure Section 5.2.
To re-enter the Manual Step Function press
•
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