GENERAL

Measurements from 1 kΩ to 100 TΩ, with auto ranging
0.5% measurement accuracy
Improved High-visibility blue LCD graphical display for menu programming and test results
Programmable test voltage from 1 to 1000 Vdc
Fully programmable measure cycle times
Automatic test lead zeroing to eliminate connection errors
Direct reading of measured resistance or current

RS-232, Flash Drive for data storage in CSV format and uploading test setup conditions, and PLC Interfaces Standard, IEEE-488 Optional
IET 1865 Plus LabView Driver for IEEE-488.2 and RS-232
Proven over many years in the field
CE option available
Limit entry for pass/fail testing
Safety interlock and high voltage indicator for operator safety
ASTM D 257 Volume and Surface Resistivity with 1865 Plus

DESCRIPTION

The 1865 + is the Megohmmeter for today’s most challenging applications

New Significantly Improved Version of a trusted standard.

See how the 1865 Plus can be used in to calibrate your resistances standards at voltage up to 5 kV.
A System for High Voltage Resistance Measurements up to 6 kVdc.

Ideal for calibration of IET’s SRC or VRS resistance standards at voltage from 1 kVdc to 5 kVdc
Use these SRC and VRS standards in calibration of megohmmeters such as the Fluke 1555, MEGGER MiT Series and others at 5 kVdc or other voltages.

Unit comes with optional CE marking which is a mandatory conformance mark for products being used in Europe

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 TΩ can be measured with a basic accuracy of 0.5% at DC voltages up to 1000 V.

A programmable limit makes the megohmmeter ideal for pass/fail testing in a production environment and is also adaptable for use in automated system applications with its included RS-232 Interface or optional IEEE-488 interface adapter.

Precision Measurements: The IET Labs 1865 + Megohmmeter provides resistance measurement capability from 1 kΩ to 100 TΩ (test voltage dependent) with a basic accuracy of 0.5%. To meet test requirements for a wide range of devices, the test voltage is fully programmable up to 1000 Vdc. 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 routine of test leads.

Easy to use: The 1865+’s menu programming system is significantly improved, 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 megohmmeter I/O interface provide a clear indication of the measured results.

Program and Data Storage: Test setup conditions and measured results of the megohmmeter can be stored in CSV format for easy use with Microsoft Excel. Storage options include:

512 MB of internal instrument memory for storage of setups
A computer (via the RS-232 interface)
A flash drive (via the USB host port)

Automated Testing: For automated system applications, the 1865+ Megohmmeter includes an RS-232 interface for control and data collection and an I/O interface connection with remote start and pass/fail outputs. An optional IEEE-488 to RS-232 adapter is also available (or can be added later), which enables the 1865 to be remotely controlled by a computer with ieee-488 interface.

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

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

Component Test Fixture: An accessory fixture is available for use with the 1865+ Megohmmeter 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.

Why Buy?

Volume and Surface Resistivity Measurements in conjunction with 1865-11
For precision high resistance measurements over a wide voltage range
For automated testing requiring remote start and pass/fail output
To data log test results via RS-232, Flash Drive or IEEE-488 interface adapter

Product Package

The following accessories come standard with the megohmmeter:

150073 1865 Instruction Manual
4200-0300 AC Power Cable
800014/15 Capacitor Adapters (100kO & 1MO)
520049 Power Line Fuse (2.5A, 250V)
630019 Interlock Connector
Calibration Certificate Traceable to SI

SPECIFICATION

1865+ Megohmmeter Basic Specifications

(Full specifications can be found on datasheet)

Resistance range:
1×10⁶ to 1×10¹⁴ Ω at 1000 Vdc
1×10⁵ to 1×10¹³ Ω at 100 Vdc
1×10⁴ to 1×10¹² Ω at 10 Vdc
1×10³ to 1×10¹¹ Ω at 1 Vdc

No of ranges: 7 manually settable plus auto-ranging

Voltage range: 1 to 1,000 volts, programmable in two ranges

Voltage accuracy at front panel connectors:
1 – 100 V: 1% of setting + 1% Resolution: 25 mV
100 – 1,000 V: 1% of setting + 2 % Resolution: 250 mV

Resistance accuracy: ±[0.45% +{(RX/VX)(0.0005FS + 2pA) + 30Ω/RX}100%]:
RX = Measured resistance in ohms
VX = Programmed voltage in volts
FS = Full scale current range in amperes

Measuring current: 0.1 pA (10-13 A) to 1 mA (10-3 A)

Current accuracy at front panel connectors:
1 nA to 1 mA ±[0.5% + (0.0005 FS + 2 pA)]
100 pA to 1 nA ±[1% + (0.0005 FS + 2 pA)]
1 pA to 100 pA ±[10% + (0.0005 FS + 2 pA)]

Short-circuit current:<2 mA

Input impedance: 5 kΩ, ±5%

Output voltage impedance: 1 kΩ, ±5%

Measurement limits: Pass/Fail (1 limit)

Interfaces: Standard: RS-232, I/O port with safety interlock Optional: IEEE-488 interface adapter & Data/Program storage via USB port

Input terminals: Four sheathed banana jacks, front-mounted (with optional rear-mounting) + unknown (red) – unknown (black) guard (blue) ground (green)

DATASHEET AND MANUAL

Data Sheet: This document explains the features, options, Specifications and option models for this item.
Product Manual: Specifications and option models for this item. This document contains the technical product manual and guidelines.

APPLICATION NOTES AND SOFTWARE

Driver: Software drivers to allow this instrument to work with your computer
Application Notes: Application notes and technical resources for this instrument.

ACCESSORIES

Brand	IET Labs, Inc
Sub Categories	Electric & Electronic Test and Measurements
Application	MegohmMeter

1865-03 REAR PANEL INPUT OPTION	1865-11 RESISTIVITY TEST FIXTURE FOR 1865	1865-50 RACKMOUNT KIT
1865-51 SHIELDED LEAD SET	1865-52 COMPONENT TEST FIXTURE	1865-FLUID TESTER LIQUID SAMPLE ELECTRODE
7000-23-120V IEEE-488 TO RS-232 INTERFACE ADAPTER	7000-23-240V IEEE-488 TO RS-232 INTERFACE ADAPTER	7000-23-240V IEEE-488 TO RS-232 INTERFACE ADAPTER
NIST TRACEABLE CALIBRATION CERT (INCLUDED)

1865+ DIGITAL MEGOHMMETER I/R TESTER