PIECAL 334 4-20 mA Loop Calibrator

The PIECAL 334 is an easy to use 4-20 mA Loop Calibrator you can use to check, calibrate and measure all your current signal instruments in a 4 to 20 milliamp DV loop.

The PIECAL 334 gives you the ability to:

• Calibrate Milliamp Instruments - Source 0.00 to 24.00 mA & -25.0 to 125.0% of 4-20 mA; Read 0.00 to 52.00 mA, -99.99 to 99.99 V Simulate 2-Wire Transmitters; Power & Read 2-Wire Transmitters
• Calibrate with Confidence - Accurate to ±0.025% of Span at 4.000 & 20.000 EZ-CHECK outputs
• Use in the Plant, Field or Shop - Includes Rubber Boot and Attached Test Leads; Low profile switches resist accidental damage
• Simple Battery Changes - Separate compartment for no-tool battery changes with four inexpensive “AA” batteries

PIECAL Calibrators Competitive Edge

PIECAL Calibrators are designed and built by members of the same team that designed and built the calibrators manufactured by Fluke under the Altek label.

To learn more about these competitive differences, download the PIECAL 334/334Plus vs. Altek 334A/334 sheet.

Full Review

• Easy to use
• Backlit display
  
• Source milliamps
• Monitor changes with bar graph
• Power saving output
• Calibrate using loop power
• Read loop current
• Power & measure 2 wire transmitters
• Evolutionary design

General
Operating Temperature Range	-20 to 60°C (-5 to 140F)
Storage Temperature Range	-30 to 60°C (-22 to 140F)
Relative Humidity Range	10 % ≤RH ≤90% (0 to 35C), Non-condensing
	10% ≤RH ≤70% (35 to 60C), Non-condensing
Size (L x W x H)	5.63 x 3.00 x 1.60 in (143 x 76 x 41mm)
Weight	12.1 oz, 0.34 kg (including boot & batteries)
Batteries	Four "AA" Alkaline 1.5V (LR6)
Optional NiMh Rechargeable battery kit	120VAC for North America Only; charger, four NiMh batteries, AC & DC cords
Lower Battery	Low battery indication with nominal hour of operation left
Protection against misconnection	Over-voltage protection to 135 vrms (rated for 30 seconds)
Display	High contrast graphic liquid crystal display with 0.315" (8.0mm) high digits.

Read mA
Ranges and Resolution	0.00 to 52.000 mA or -25.00 to 300.00% of 4.-20 mA
Accuracy Below 24.010 mA Above 24.010 mA	≤ ± (0.05% of 24.000mA +0.01 mA) ≤ ± (0.05% of 24.000mA +0.01 mA)
Voltage burden	≤ 2V at 50 mA
Overload/Current limit protection	54 mA nominal
Battery life	≥ 125 Hours nominal

Source/Power & Measure Two Wire Transmitters
Ranges and Resolution	0.000 to 24.000 mA or -25.00 to 125% of 4-20mA
Accuracy EZ-Checks at 4 & 20 mA1 0.000 to 24.000 mA	≤ ± (0.01 % of Span at 4 mA & 20 mA (±0.005mA) ≤ ± (0.05 % of 24 mA Span (±0.01mA)
Noise	≤ ± 1/2 Least Significant Digit
Temperature effect	≤ ± 0.005%/°C of FS
Loop compliance voltage	≥ 24 DCV @ 20.00mA
Loop drive capability	1200 Ω at 20 mA for 15 hours nominal
Battery life	≥30 hours at 12 mA nominal

¹These are internal calibrated cardinal reference points and accuracy is not defined or limited by display resolution

2-Wire Transmitter Simulation
Accuracy	Same as Source/Power & Measure
Voltage burden	≤ 2V at 20 mA
Overload/Current limit protection	24 mA nominal
Loop voltage limits	2 to 100 VDC (fuse-less protected from reverse polarity connections)
Battery life	≥ 125 hours nominal

Voltage Read
Range and Resolution	-99.99 to +99.99 VDC Full Span (FS)
Accuracy	≤ ± 0.05% of FS
Temperature effect	≤ ± 100 ppm/°C of FS
Input resistance	≥ 2 MΩ
Battery life	≥ 125 hours nominal

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