Extech 422123 Precision
Multifunction Calibrator

     The Extech 422123 is a simple multifunction calibrator for
soursing mA, VDC, common thermocouples and frequncy
signals.  Output changes can be programmed from 1 to 100%
for quick "loop" checks.  The internal 24V loop power supply
drives loads up to 1000 ohms.

Features:

• Source 4 to 20 mA, 0 to 20 mA or 0 to 24 mA
  with 0.001 mA resolution
• Select Type K, J, T or E thermocouple for
  precision calibrations in Deg F or C
• Output 0 to 100.00mV DC
  0 to 1.0000V or 0 to 10.000V DC
• Frequency source of 1Hz to 62.5 kHz in 700 steps
• Self-contained 24V loop power supply
  drives current loads up to 1000 Ohms
• User can easily set output steps; 1% to 100%
• Basic 4 to 20mA process loop accuracy of 0.025%
• Large 5 digit LCD display
• Step and auto-ramp features
• Simple keypad operation
• Audible warning if load is open with mA
  output or shorted with V output
• Powered by internal 9V battery or
  external battery pack (attaches to
  meter stand) for extended field applications
  or optional AC adaptor
• Complete with 9V battery, external
  battery pack, carrying case, alligator clips,
  Type K and Type J test cables

SPECIFICATIONS: