Practical Instrument Electronics 422 - Manual

Page 1
Practical Instrument Electronics
82 East Main Street Suite 3.14 • Webster, NY 14580 Tel: 585.872.9350 • Fax: 585.872.2638 • [email protected] • www.piecal.com
Model 422
Automated Thermocouple Calibrator
Operating Instructions
Model 422
Automated Thermocouple Calibrator
Operating Instructions
Product Description
• Easy to use
With the PIECAL 422 you can check & calibrate all your
thermocouple instruments and measure thermocouple
sensors.
• Take it with you into the shop, plant or field
Carry it without worry - it comes protected with a rubber
boot and rugged, low profile switches. Easy to operate
even in the dark areas of the plant with the backlit display.
• Calibrate directly in temperature (°C & °F)
Stop carrying around a millivolt source and thermocouple
tables. The PIECAL 422 works with the thermocouples
you use including types J, T, E, K, R, S, B, N, G, C, D, L
(J-DIN), U (T-DIN) and Platinel II. Easily set any value
quickly to within 0.1° with the adjustable digital
potentiometer “ DIAL” plus store any three temperatures
for instant recall with the EZ-CHECK™ switch.
• Calibrate quickly with automatic output stepping
Choose between 2, 3, 5, 11 steps and ramp to
automatically increment the output in 100%, 50%, 25%,
10% of span or continuously ramp between span and
zero. Select the step time to match your system from 5, 6,
7, 8, 9, 10, 15, 20, 25, 30 and 60 seconds.
• Compatible with all process instruments
Connect directly to the thermocouple inputs of smart
transmitters, PLCs, DCS and multichannel recorders and
verify their outputs or displays.
• Measure Thermocouple Sensors
Trouble shoot sensor connections and find broken wires. The PIECAL 422 measures the
thermocouple in degrees C or F. Secondary display shows the millivolt value corresponding to
the thermocouple temperature as well as the cold junction temperature measured by the
calibrator.
• Calibration Lab Accurate & Stable
The internal cold junction thermistor is accurate to ±0.05°C and is traceable to NIST. The sensor
is thermally bonded to an isothermal mass which includes brass blocks with screw terminals for
connection of bare thermocouple wires along with a miniature thermocouple connector for fast
connections. The circuitry uses an extremely stable voltage reference and low drift components
which make the PIECAL 422 more accurate than most other handheld and benchtop
thermocouple calibrators.
• Perform Heat Treating Uniformity Surveys and System Accuracy Tests
The PIECAL 422 meets or exceeds the requirement of AMS 2750 as both a Secondary
Standard Instrument and as a Field Test Instrument.
Copyright © 2014 All rights reserved • 422-9002 - Rev D 1 July 2014