QuadTech Inc

The 1865 Megohmmeter/IR Tester, with digital display, is used for high accuracy measurements of insulation resistance on a wide variety of components, materials, and electronic devices. Resistance values greater than 100 teraohms can be measured with a basic accuracy of 0.5%, at DC test voltages up to 1000V. A programmable limit makes the unit ideal for pass/fail testing in a production environment and is also adaptable for use in automated system applications with its optional IEEE-488 interface.

Precision Measurements The 1865 offers resistance measurement capability over a range of 1kohm to 100 Tohms (test voltage dependent), with basic accuracy of 0.5%. To meet the test requirements for a wide range of devices, the test voltage is fully programmable up to 1000V DC. Sensing the proper resistance measurement range is done automatically, thus eliminating setup errors; and in order to eliminate lead or fixture errors, the operator can easily initiate an automatic zeroing routing test leads.

Easy to Use The 1865’s menu programming system, simple controls and indicators combine for efficiency of test and productivity. Its multi-function keypad provides the operator with an easy way to program and make measurements.

Pass/Fail Testing Measured results are automatically compared to an operator programmed limit for pass/fail testing. Pass/fail indicator lights or a pass/fail output from the instrument’s I/O interface give a clear indication of the measurement results.

Program and Data Storage Test setup conditions and measured results can be stored in instrument memory, or on 3 _’ disk when using the extended program storage option.

Automated Testing For automated system applications, the instrument includes an I/O interface connection with remote start and pass/fail outputs. An optional IEEE-488 interface is also available (or added later), which enables the 1865 to be used under computer control.

Current Display Mode Besides the readout of insulation resistance in ohms, the operator can select a display mode for reading the measured current directly.

Safety Features The 1865 provides safety features such as current limiting, a warning indicator when high voltage is active, and safety interlock, for protection of the operator.

Component Test Fixture An accessory fixture is available for use with the 1865, which accommodates a variety of component types, including radial, axial, and chip components. Its shielded case reduces electrical noise and interference and includes a cover interlock switch and remote start for maximum operator safety.

Uses:

• Production Testing of Insulation Switches, Connectors, Cables, Printed Circuit Boards, Transformers, Motors, and Other Devices
• Insulation Properties of Natural and Synthetic Materials such as Oils, Plastics, Rubber or Porcelains
• Screening and Sorting of High Resistance Components
• Incoming Inspection and Quality Assurance Testing
• Product Design and Evaluation of Insulation Properties

Features:

• Measurement Range to 100 Tohms
• Programmable Test Voltage, 1 to 1000V DC
• 0.5% Measurement Accuracy
• Automatic Ranging
• Programmable Test Times
• High Resolution LCD Display
• Storage of Test Setup and Results
• Automatic Zeroing of Test Leads
• Limit Entry for Pass/Fail Testing
• Direct Reading of Measured Current
• Keypad Lockout with Password Protection
• RS-232 and I/O Interfaces
• Optional IEEE-488 Interfaces