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PIECAL 322-1 Automated Thermocouple Calibrator

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PIECAL 322-1 Automated Thermocouple Calibrator


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The PIECAL 322-1 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 322-1 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.
  • 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
±(0.025% of Reading + 0.006 mV)
Cold Junction Compensation
± 0.16°F (±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 35°C), Non-condensing
10% ?RH ?70% (35 to 60°C), 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
Normal Mode Rejection
50/60 Hz, 50 dB
Common Mode Rejection
50/60 Hz, 120 dB

Output Impedance
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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          PIECAL 322-1 Automated Thermocouple Calibrator