Practical Instrument Electronics 311 - Manual (Page 5)

Practical Instrument Electronics
82 East Main Street Suite 3.14 • Webster, NY 14580 Tel: 585.872.9350 • Fax: 585.872.2638 • [email protected] • www.piecal.com
Page 5
To change the Automatic Stepping settings
Double click the
e DIAL KNOB at any time the unit is on and the following display will appear for 30
seconds:
Turn the
e DIAL KNOB to move through the menu. Press the e
DIAL KNOB to toggle between OFF and ON or to change the
STEPS and the STEP TIME settings. These settings are
remembered even with the power off.
EXIT MENU - exits this menu immediately and saves any
changes. Menu will automatically exit after 30 seconds of
inactivity.
STEPS - pressing the knob will cycle through 2, 3, 5, 11 and 21 steps then reverse direction. The
endpoints of the steps are based on the values stored in the
HI and LO EZ-CHECK outputs.
2 steps will automatically switch between the values stored in the HI & LO EZ-CHECK (0 &
100%).
3 steps between the HI, Midpoint and LO EZ-CHECK (0, 50 & 100%).
5 steps between the HI and LO EZ-CHECK in 25% increments (0, 25, 50, 75 & 100%).
11 steps between the HI and LO EZ-CHECK in 10% increments (0, 10, 20...80, 90 &100%).
21 steps between the HI and LO EZ-CHECK in 5% increments (0, 5, 10... 90, 95 & 100%).
STEP TIME - pressing the knob will cycle through 5, 6, 7, 8, 9, 10, 15, 20, 25, 30 and 60 seconds.
To start the Automatic Stepping
Start automatic stepping or ramping by placing the EZ-CHECK Switch into the HI or LO position
then press and hold the
e DIAL KNOB for 6 seconds (the word STORE will appear on the display
after 3 seconds and continue to press the DIAL KNOB) until the word STEPPING appears on the
display. The word STEPPING will appear on the display anytime the selected automatic function is
running. Stop the stepping by again pressing and holding the
e DIAL KNOB for 3 seconds.
Automatic Stepping
Storing EZ-CHECK Outputs
STORING HI and LO EZ-CHECK Outputs
Choose this function to provide a simulated RTD signal into controllers, temperature transmitters,
indicators or any other input device that measure thermocouple sensors..
1) Store your high (SPAN) output temperature by moving the EZ-CHECK switch to the HI position
and turn the e EZ-Dial knob until the desired temperature is on the display. Press and hold the
EZ-Dial knob until STORED appears to store the value. Release the EZ-Dial knob.
2) Store your low (ZERO) output temperature by moving the EZ-CHECK switch to the LO position
and turn the e EZ-Dial knob until the desired temperature is on the display. Press and hold the
EZ-Dial knob until STORED appears to store the value. Release the EZ-Dial knob.
3) Instantly output your SPAN and ZERO temperature outputs by moving the EZ-CHECK switch
between HI and LO. You may also select any third temperature output (such as mid-range) using
the SET position on the EZ-CHECK switch.
EXIT 15
> STEPS 3
STEP TIME 8
AUTO OFF ON