Practical Instrument Electronics 530 - Manual

Practical Instrument Electronics
Model 530
4-20 Milliamp Loop Calibrator
Operating Instructions
Basic Keypad Operations
1
EZ-Check™ Switch/EZ-Step™ Pushbutton
Slide the switch to select the user stored values for
calibration points. Press the button to adjust the output
by the user defined step size. Press and hold the button
to activate the auto step/ramp mode.
2
SOURCE/STEP SIZE Button
Press SOURCE to change source modes. These are:
• Source Milliamps
• 2-Wire Transmitter Simulate
3
ON/OFF Button
Press ON/OFF to turn the Model 530 on or off.
4
UNITS Button
Press UNITS to change how current is
displayed – either in milliamperes or % of 4-20
mA. Voltage is only displayed in Volts.
5
READ Button
Press READ button to change read modes.
These are:
• Read Milliamps
• Power and Measure 2-Wire Transmitter
• Read Volts
h
STORE/CLEAR Button
In any source mode:
Press STORE/CLEAR to save the current
reading in the EZ-Check HI or LO position.
The EZ-Check switch must be set to HI or L
The display will flash “STORED” to confirm.
O.
In any read mode:
Press STORE/CLEAR to clear the values saved
in the EZ-Check™ HI and LO positions. The
display will flash “CLEARED” to confirm.
i
EZ-Dial™ Knob
Turn the EZ-Dial™ knob to adjust the output
level. Press and turn to adjust 100X faster.
EZ-Dial™ Knob
Adjust the output up and down with the EZ-Dial knob. The increment is 0.001 mA (or 0.01 % if display
units are % of 4-20 mA.) Press while turning to adjust 100X faster – 0.100 mA (or 1.00 %.)
EZ-Check ™ Switch
The EZ-Check™ switch has three positions -- high, set, and low. Its position is shown at the left edge of
the display with “HI” and “LO” indicators. Neither indicator indicates the middle position. Use of the EZ-
Check switch depends on mode.
841 Holt Road #1 • Webster, NY 14580 Tel: 585-872-9350 • Fax: 585-872-2638 [email protected] • http://www.piecal.com/
Practical Instrument Electronics, Inc. Copyright  2002. All rights reserved. 530-9002 2/26/04 1-8