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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.
82 East Main Street Suite 3.14 • Webster, NY 14580 Tel: 585.872.9350 • Fax: 585.872.2638 • sales@piecal.com • www.piecal.com
0.561.8187
Automated Diagnostic 4-20 mA Calibrator
Automated Diagnostic 4-20 mA Calibrator
Practical Instrument Electronics
Copyright © 2011 All rights reserved • 434-9002 - Rev C 13 July 2011
www.
PIECAL 434
PIECAL 434
Operating Instructions
Operating Instructions
.com
information@itm.
Page 1
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Related Manuals for PIE PIECAL 434
Summary of Contents for PIE PIECAL 434
- Page 1 • 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.
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Page 2: Basic Operation
“20.00mA”/“100.0%” position. For fast three point checks select the “DIAL” position. 20.000 The PIECAL 434 will remember the last “DIAL” value, even with the power off. AUTOMATED DIAGNOSTIC CALIBRATOR Note: The same “DIAL” value is stored for both 4-20 mA mA and %. - Page 3 GROUND LEAK DETECTION - when ON the for 30 seconds: PIECAL 434 has the ability to check for current leaks caused by ground faults, moisture or > EXIT MENU corrosion. This operates in Power/Measure...
- Page 4 STEPPING or RAMPING will flash on the display anytime the selected automatic function is running. The PIECAL 434 will automatically step or ramp between 4mA & 20mA (or 20mA & 4mA) for 30 seconds then reverse direction. Stop the stepping or ramping by pressing or turning the knob or moving any switch.
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Page 5: Simulate 2-Wire Transmitters
STEPPING or RAMPING will flash on the display anytime the selected automatic function is running. The PIECAL 434 will automatically step or ramp between 4mA & 20mA (or 20mA & 4mA) for 30 seconds then reverse direction. Stop the stepping or ramping by pressing or turning the knob or moving any switch. - Page 6 Read DC Volts READ V Choose this function to measure from -99.99 to +99.99V DC. 1) Select “VDC” with slide switch 2) Connect the red (+) and black (-) leads of the PIECAL 434 Voltage to be Measured Battery READ across the voltage source to be measured.
- Page 7 (-). The PIECAL 434 supplies a nominal 24 volts DC at 24 mA to the 2 Wire Transmitter. The current passed by the transmitter will be accurately displayed by the PIECAL 434. Calibrate the transmitter in the usual manner and disconnect the PIECAL 434.
- Page 8 DC at 24 mA to the 2 Wire Transmitter or loop. The current passed by the transmitter will be accurately displayed by the PIECAL 434 along with an indication of leakage current at the bottom of the display. If there is an uncontrolled loop, a transmitter with upscale burnout and bad or missing sensor or a short the display shows “iLOOP >...
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Page 9: Application Notes
4.00 (0.0%) and 20.00 (100.0%) mA. control of the process. The PIECAL 434 can be This method is superior to keypad units. The substituted for a faulty controller or transmitter to zero and full scale positions can be adjusted provide temporary manual control of the process. -
Page 10: Warranty
SETTING UP VALVES When setting up a valve it is important to correctly set the end stops. Use the PIECAL 434 to supply the 4 to 20 mA control signal to stroke the valve. Select “SOURCE” and the PIECAL 434 will use the internal power source for outputting current or switch to 2-WIRE SIMULATOR to stroke a valve using any pre-existing installed loop power supply as the power source. - Page 11 PIECAL 434 Specifications (Unless otherwise indicated all specifications are rated from a nominal 23 °C, 70 % RH for 1 year from calibration) General Operating Temperature Range -20 to 60 °C (-5 to 140 °F) Storage Temperature Range -30 to 60 °C (-22 to 140 °F) Relative Humidity Range 10 % ≤RH ≤90 % (0 to 35 °C), Non-condensing...
- Page 12 PIECAL 434 Specifications (continued) (Unless otherwise indicated all specifications are rated from a nominal 23 °C, 70 % RH for 1 year from calibration) Source/Power & Measure Two Wire Transmitters Ranges and Resolution 0.000 to 24.000 mA or -25.00 to 125.00% of 4-20 mA Accuracy ≤...