User Manual

Model 535 Operating Instructions
82 E. Main Street Suite 3.14 • Webster, NY 14580
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[e-mail] • http://www.piecal.com/
Practical Instrument Electronics, Inc. Copyright  2011. All rights reserved.
535-9002 Rev G 7/13/11
4-8
Manual Step and Auto Step/Ramp Parameter
To Change the EZ-Step Size:
1. Press and hold the SOURCE/STEP SIZE button for more than ¾ of a second.
2. The display will flash “EZ-STEP SIZE”.
3. Turn the EZ-Dial knob to select from 2 to 16 steps between the EZ-Check limits.
4. Turn the EZ-Dial clockwise past 16 steps to select continuous ramp mode.
5. Press the SOURCE/STEP SIZE button again to return to the normal display.
Note: If the EZ-Step
 option is turned off, the display will flash “EZ-STEP OFF”.
To Change the EZ-Step

Time:
1. Press and hold the UNITS/STEP TIME button for more than ¾ of a second.
2. The display will flash “EZ-STEP TIME”.
3. Turn the EZ-Dial knob to select from 5 to 900 second ramp time. The time per step is
calculated based on the selected EZ-Step size.
4. Press the SOURCE/STEP SIZE button to return to the normal display.
To Change the Soak Time:
1. Press and hold the READ/SOAK TIME button for more than ¾ of a second.
2. The display will flash “SOAK TIME”.
3. Turn the EZ-Dial knob to select from 0 to 900 second soak time.
Note: A soak time of 0 defeats the soak period. The step time will be used instead.
4. Press the READ/SOAK TIME button again to return to the normal display.
To Change the EZ-Step
TM
Direction:
1. Press and release the EZ-Dial knob without turning.
2. The display will change to show the EZ-Step direction selected ( or ).
Modes of Operation
Read Milliamp
Connect the Model 535 in series with the process loop to
monitor current. Observe correct polarity. Current
limiting above 24 mA (52 mA if 10-50 range is selected)
is indicated by a flashing “CURRENT LIMITED” display.