Practical Instrument Electronics 434 - Manual

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
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• EASY TO USE
With the PIECAL 434 you can check, calibrate and measure all your current signal instruments
in a 4 to 20 milliamp DC loop. It can be used at any access point in your loop. Source & Read
0.000 to 24.000 mA, Simulate a 2 Wire Transmitter or use the PIECAL 434 to simultaneously
power your 2 Wire Transmitter and measure its output.
• EASY TO READ
Turn on the backlight to easily read the display in
dark areas of the plant.
• TROUBLESHOOT LOOP PROBLEMS
Quickly diagnose ground fault and current
leakage with the patented loop diagnostic
technology (US Patent# 7,248,058).
• SOURCE MILLIAMPS
Calibrate recorders, digital indicators, stroke
valves or any instruments that get their input
from a 4 to 20 mA loop. Easily set any value
quickly to within 0.001 mA with the adjustable
digital potentiometer “ DIAL” or use preset 4.000
mA (0.00%) and 20.000 mA (100.00%)
EZ-CHECK™ settings.
• AUTOMATIC OUTPUT STEPPING & RAMPING
Press & hold the dial to automatically step from 4
to 20 in 2, 3 or 5 steps or choose a continuous
ramp.
• CALIBRATE USING LOOP POWER
Check loop wiring and receivers by using the
PIECAL 434 in place of a 2 Wire transmitter. The
PIECAL 434 uses any loop power from 2 to 60 V
DC.
• READ LOOP CURRENT
Check controller outputs or measure the milliamp
signal anywhere in the loop. The PIECAL 434
measures 0.000 to 24.000 mA (-25.00 to 125.00%)
signals with greater accuracy than a typical multimeter.
• POWER & MEASURE 2 WIRE TRANSMITTERS
The PIECAL 434 can simultaneously output 24V DC to power any and all devices in a process
loop using the internal batteries and internal switching power supply, while measuring the output
of a 2 Wire Transmitter and any other loop devices. Powers HART™ transmitters with built-in 250
ohm resistor simplifying hookups with HART communicators.
• READ DC VOLTS
The PIECAL 434 can measure from -60.00 to +60.00 VDC with 10mV resolution. Use it to check
loop power supplies, I/V converters, 1 to 5 Volt signals, and other voltages making it
unnecessary to carry an additional multimeter.
Copyright © 2011 All rights reserved • 434-9002 - Rev C 13 July 2011
PIECAL 434
Automated Diagnostic 4-20 mA Calibrator
Operating Instructions
PIECAL 434
Automated Diagnostic 4-20 mA Calibrator
Operating Instructions