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209 Loop Calibrator

Additel ADT209 Loop CalibratorThe Additel 209 loop calibrator series combine the ease of use and functionality that makes it the ideal tool for troubleshooting your process loop. The ADT209 has an accuracy of 0.03% of reading. If you want to source, simulate or simply measure the Additel Loop calibrator series will fit your need allowing for the measurement of current, voltage and a switch. There is also the ability to simulate or source mA or a process transmitter.

With a push of a button, you can switch to zero and span values, auto ramp, and auto step throughout the range.

The 209 loop calibrator also has a l

arge, easy to read screen which will simultaneously display the measurement with the % of span.


  • Accuracy to 0.01% of reading
  • Measure, source, or simulate loop current
  • Measure DC volts
  • Simultaneously mA and % span display
  • Switch functionality
  • Selectable ramp and step functions
  • HART 250Ω resistor in series with 24V loop


General Specifications of the ADT209 Loop Calibrator

Voltage Limit 30V between terminals or between terminals and ground
Measurement Functions Auto step, auto ramp, span step
Display VA LCD display. 2.04 x 2.04 in (52 x 52mm)
Loop Power 24V
Over-Voltage Protection 30V DC (240V AC)
Overload Current Protection 33 mA DC
Storage Temperature -20oC to 70oC
Working Enivironment  -10 to 50oC, 95%RH
Working Altitude <3, 000 m
Random 2G 5 to 500Hz
1 meter drop
One 9V alkaline battery (ANSI/NEDA 1604A or IEC)
DC9V optional adapter available
Battery Life (typical)
Output mode: 18 hours (12 mA/500Ω)
Measure mode: 50 hours
Size(LxWxH) 163 x 83 x 41mm
Weight 350g
Calibration Certification NIST-traceable certificate of calibration with data
Compliance Certification


Warranty 3 years


Electrical Measure Specifications

  Range Resolution Accuracy
Voltage DC 0 to 30 V 1 mV 0.03%RD + 2mV
Current DC 0 to 24mA 1μA 0.03%RD + 2μA
Switch Test
 Input resistance more than 500M
 Trigger level: low level <0.3V; high level:2V

Electrical Source Specifications

  Range Resolution Accuracy
Current DC 0 to 24 mA 1 mA  0.03%RD + 2μA
Source Mode   700Ω/20 mA maximum
Sink Mode   External loop voltage nominal 24V, maximum 30V, minimum 12V


Ordering Information

Model Number:


Accesories Included:

Test Lead Set - 1 set

Alligator Clips - 2pcs

User Manual - 1pc

9V Alkaline battery - 1pc

Optional Accessories:

9812 - 110V/220V external power adapter (DC 9V)