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Model 535

The Model 535 from Practical Instrument Electronics (PIE) brings the features of a calibrator for 4-20 milliamp as well as 10-50 milliamp process loops in one pocket sized unit.

The EZ-Dial™ knob and EZ-Check™ switch are all that’s needed to make quick adjustments or set 0% or 100% of full scale.

The EZ-Step™ button provides one-handed stepping. Automatic stepping and ramping modes allow hands-free testing and calibration of the process loop with HIGH accuracy and repeatability designed in collaboration with Nuclear plants. The basic Model 535 supplies over 42V at 50 mA to power most instruments. The Model 535-50 supplies over 50V at 50 mA for instruments requiring power supplies of 48 V dc.

With the Model 535, calibration is easy as PIE.

  • 4 to 20 mA Loop Functions 

  • Source and Read 0.000-24.000 mA 

  • Simulate 2-Wire Transmitters 

  • Power 2-Wire Transmitters and Read 0.000-24.000 mA 

  • Display current in mA or -25.00 - 125.00 % of 4-20 mA 

  • 10 to 50 mA Loop Functions 

  • Source and Read 0.000-50.000 mA 

  • Simulate 2-Wire Transmitters 

  • Power 2-Wire Transmitters and Read 0.000-50.000 mA 

  • Display current in mA or -25.00 - 105.00 % of 10-50 mA 

  • Read Voltage Function 

  • Read 0.00 to ± 30.00 VDC with 4X over range ability 

  • Source Voltage Function 

  • Source 0.000 to 24.000 VDC 

  • High Accuracy 

  • ±0.025% of reading 

  • contrast High graphic display viewable in all lighting conditions and angles 

  • Bar graph for quick reference of input and output levels 

  • Full 5 Digit Display 

  • Change the speed of dialling your test point by just pushing down on the knob 
    Easily adjust output by 0.001 mA (0.01 %) or 0.100 mA (1.00 %) 

  • EZ-DialTM Knob 

  • EZ-CheckTM Switch with EZ-StepTM Button 

  • 3-position tactile switch with push button for true onehanded calibrations 

  • Push button for stepping through calibration points 

  • 16 different step sizes 

  • Hands-free auto step and auto ramp modes 

  • Selectable soak and step time for working with valves 

  • Industry Standard Input/Output Connections 

  • Conveniently located banana jacks on top panel 

  • Optional Analog Output 

  • Model 535A includes a 10 mV/mA proportional output provided on bottom panel banana jacks for connection to chart recorders and data loggers

  • Uses 4 AA Alkaline Batteries

  • Superior battery life of 10 hours in source mode

  • >40 hours battery life in read mode

  • Easy access to battery compartment

  • 240 VAC Tolerant

  • Fuse-less protection from accidental misuse

  • Lightweight and rugged with a solid feel

  • Convenient Velcro hand strap allows for a firm confident grip or attachment to pipes and ladders.

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