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PIE piecal 334 Operating Instructions Manual

4-20 ma loop calibrator
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• EASY TO USE
With the PIECAL Model 334 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 0.00 to
24.00 mA, Simulate a 2 Wire Transmitter or use the
PIECAL Model 334 to simultaneously power your 2
Wire Transmitter and measure its output. When
desired the PIECAL Model 334 can display current
in milliamps or percent of 4 to 20.
• 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
0.01 mA with the adjustable digital potentiometer
"DIAL " or use preset 4.00 mA (0.0%)
mA (100.0%) EZ-CHECK™ settings.
• RECALL OUTPUT SETTINGS
The EZ CHECK™ switch provides rapid checking of
4.00, 20.00 and any convenient third point between
0.00 to 24.00 mA.
• CALIBRATE USING LOOP POWER
Check loop wiring and receivers by using the
PIECAL Model 334 in place of a 2 Wire transmitter.
Simulate a changing process input to check loop
response and control settings. The PIECAL Model
334 uses any loop power from 2 to 100V DC.
• READ LOOP CURRENT
Check controller outputs or measure the milliamp signal anywhere in the loop. The
PIECAL Model 334 measures 0.00 to 52.00 mA signals with greater accuracy than
a typical multimeter. The PIECAL Model 334 can be easily switched to display
milliamps or percent of 4 to 20.
• POWER & MEASURE 2 WIRE TRANSMITTERS
The PIECAL Model 334 can simultaneously output 24V DC to power any and all devices in a
process loop using the internal batteries and the internal switching power supply, while
measuring the output of a 2 Wire Transmitter and any other loop devices. This is handy for
checking the functionality of transmitters in the eld or on the bench.
• READ DC VOLTS
The PIECAL Model 334 can measure from -99.99 to +99.99 VDC with 10mV resolution. Use it to
check loop power supplies, I/V converters, chart recorders, 1 to 5 Volt signals, and any other
voltages within this range making it unnecessary to carry an additional multimeter.
Product Description
and 20.00
Practical Instrument Electronics, Inc.
Available at www.Instrumentation.com
PIECAL Model 334
PIECAL Model 334
4-20 mA Loop Calibrator
4-20 mA Loop Calibrator
Operating Instructions
Operating Instructions

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Summary of Contents for PIE piecal 334

  • Page 1 PIECAL Model 334 PIECAL Model 334 4-20 mA Loop Calibrator 4-20 mA Loop Calibrator Operating Instructions Operating Instructions Product Description • EASY TO USE With the PIECAL Model 334 you can check, calibrate and measure all your current signal instruments in a 4 to 20 milliamp DC loop.

  • Page 2: Basic Operation

    Basic Operation SOURCE / READ / 2 WIRE SWITCH Select “SOURCE” to output in milliamps or percent. Select “READ” for reading in milliamps or percent. Select “2 WIRE” to simulate a 2 Wire Transmitter. EZ-CHECK™ SWITCH Instantly output 4.00 mA or 20.00 mA by moving the EZ-CHECK™...
  • Page 3 Sourcing Milliamps mA OUT, % OUT (Percent of 4 to 20 mA) Choose this function to provide an output from 0.00 to 24.00 milliamps. The compliance voltage is a nominal 24 VDC to provide the driving power to your milliamp receivers. 1) Disconnect one or both input wires from the device to be calibrated.

  • Page 4: Simulate 2-Wire Transmitters

    Simulate 2-Wire Transmitters 2 Wire mA, 2 Wire % (Percent of 4 to 20 mA) Choose this function to simulate a 2 Wire Transmitter output from 0.00 to 24.00 milliamps. Operates in loops with power supply voltages from 2 to 100 VDC 1) Disconnect one or both input wires from the device to be cali - brated.

  • Page 5: Application Notes

    Read DC Volts READ V Choose this function to measure from -99.99 to +99.99V DC. 1) Select “READ VDC” with slide switch 2) Connect the red (+) and black (-) leads of the PIECAL Model 334 across the voltage source to be measured.

  • Page 6: Warranty

    The liability of Practical Instrument Electronics (PIE) is restricted to that given under our guarantee. No responsibility is accepted for damage, loss or other expense incurred through sale or use of our equipment. Under no condition shall Practical Instrument Electronics, Inc.
  • Page 7 PIECAL 334 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 8: Additional Information

    PIECAL 334 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 334 Ranges and Resolution 0.00 to 24.00 mA Full Span or -25.0 to 125.0% of 4-20 mA Accuracy EZ Check(s) at 4 &...

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