Loop Calibrator is a cost-effective, integrated solution for calibration, repair and maintenance of current loops. A large display and simple, pushbutton interface for ease of use. Simultaneous mA and percent readout for quick, easy interpretation of readings. mA accuracy of 0.02 percent. Push button 25 percent steps for fast, easy linearity checks. Save time over traditional knob type controls. "Span Check" for fast confirmation of zero and span. Selectable slow ramp, fast ramp, and step to provide smooth outputs for valve slewing and loop functional tests. 24 volt internal loop supply, so you can power and read a transmitter at the same time without carrying a DMM. Single 9V battery that is easily changed. 0 - 20 mA or 4 - 20 mA default start up modes. 0.02 percent accuracy and 0.001 mA resolution. Simultaneous mA and percent of span display. Selectable step or ramp outputs. 24V Loop supply with mA measure. 0-28 VDC measurement to check Loop Voltage. Easy battery exchange without opening the case. Compact case with separate protective holster. 3 year warranty. Current measurement: : 0 to 24 mA range, 0.001 mA resolution, 0.02 percent Rdg + 2 LSD accuracy. Voltage measurement: : 0 to 28V DC range, 1 mV resolution, 0.025 percent Rdg + 2 LSD accuracy. Loop power: while measuring mA, 24V. Operating temperature: -10/55 degree C. Storage temperature: -40/60 degree C. Measures 152mm length by 70mm width by 41mm depth. Loop calibrator including: AC70A alligator clips, C10 protective yellow holster with Flex-Stand, instruction sheet, TL75 safety-designed test lead set, NIST- traceable calibration report and data. Weight: 340g.