PIECAL 422 Automated Thermocouple Calibrator

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Price: $1,295.00

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The PIECAL 422 is a rugged, easy to use Automated Thermocouple Calibrator you can use to check & calibrate all your thermocouple instruments and measure thermocouple sensors.

The PIECAL 422 gives you the ability to:
  • Carry it without worry - it comes protected with a rubber boot and rugged, low profile switch.
  • Easy viewing - Large backlight display
  • Work will all process instruments - Works with older instruments and newer multi-channel instruments that switch between input channels.
  • Measure thermocouple sensors - Troubleshoot sensor connections and find broken wires or corroded connections.

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.

PIECAL 422 vs. Altek 422
In comparison the PIECAL 422 improves upon other popular calibrator brands, such as the Altek 422, by including a larger display with backlight, making it easier to use, more resistant to accidental damage and more!

To learn more about these competitive differences, download the PIECAL 422 vs Altek 422 sheet.
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Full Review

  • Easy to use
  • Protected with a rubber boot and rugged, low profile switch
  • Calibrate directly in temperature
  • Fast calibration with automatic output stepping
  • Compatible with All process instruments
  • Measure RTD sensors
  • Evolutionary design
(0.008% of Reading + 0.006 mV)
Cold Junction Compensation
0.16F (0.1 C)
Operating Temp. Range
-25 to 60 C (-10 to 140 F)
Millivolt Range
-13.000 to 80.000 mV
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)
Weight12.1 oz, 0.34 kg (including boot & batteries)
Batteries Four "AA" Alkaline 1.5V (LR6)
Battery Life
50 hours
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 60 V dc (rated for 30 seconds)
DisplayHigh contrast graphic liquid crystal display. LED backlighting for use in low lit areas.

Input Impedance
> 10 Megohms
Open Thermocouple

10,000 Ohms nominal
< 10 microamp pulse for 300 milliseconds
Normal Mode Rejection
50/60 Hz, 50 dB
Common Mode Rejection
50/60 Hz, 120 dB

Output Impedance
< 0.3 Ohms
Source Current
> 20 mA (drives 80 mV into 10 Ohms)
≤ 4 microvolts p-p for frequencies of 10 Hz or below

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