Practical Instrument Electronics 434 - Manual (Page 3)

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 3
Configuration
Configure the Calibrator
Move q POWER SWITCH to “mA”, “% 4 to 20
mA” or “READ VDC”.
The following display will appear for 3 seconds:
Double click the r DIAL KNOB at any time the
unit is on and the following display will appear
for 30 seconds:
Turn the r DIAL KNOB to move through the
menu. Press the r DIAL KNOB to toggle
between OFF and ON. 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.
MODEL 434 REV #.#
> EXIT MENU
STEPS 5
GND LEAK DET OFF
BACKLIGHT OFF
HART MODE OFF
> EXIT MENU
AUTO
OFF OFF
STEPS - pressing the knob will cycle from 2, 3,
5 steps and RAMP.
2 steps will automatically switch between 4 &
20 mA (0 & 100%).
3 steps between 4, 12 & 20 mA (0, 50 &
100%).
5 steps between 4, 8, 12, 16 & 20 mA (0, 25,
50, 75 & 100%).
RAMP will continuously ramp the output
between 4 & 20 mA (0 & 100%).
GROUND LEAK DETECTION - when ON the
PIECAL 434 has the ability to check for current
leaks caused by ground faults, moisture or
corrosion. This operates in Power/Measure
mode while powering up a 2-wire transmitter or
loop.
BACKLIGHT - If BACKLIGHT is ON the
backlight will light all the time the unit is powered
up. For maximum battery life turn the backlight
off when using the PIECAL 434 in areas with
enough ambient light to read the display.
HART MODE - when ON a 250 Ohm resistor is
automatically inserted in series with the leads in
all modes. This allows a HART Communicator to
communicate with a HART Transmitter without
adding an external resistor in the loop.
AUTO OFF - If AUTO OFF is ON, the unit will
turn off after 30 minutes of inactivity to save
battery life. If AUTO OFF is OFF the unit will stay
on until the POWER SWITCH is moved to the off
position.
Note: All settings are remembered even with the
power off. Removing the batteries resets the
values to factory defaults.