IET 1888 Megohmmeter/High Resistance Meter

The IET Labs 1888 Megohmmeter/High Resistance Meter is designed to meet the demands of today’s most challenging applications, offering advanced features and exceptional accuracy. It is an excellent replacement for the previous 1865 Plus model, with significant upgrades and a more user-friendly interface.

IET 1888 Megohmmeter/High Resistance Meter Key Features:

• Enhanced User Interface: The intuitive menu system with a breadcrumb design makes navigation straightforward, reducing the need for extensive training. The color graphical touchscreen displays all measurement parameters on one screen, with options to view tables and charts. This allows users to visualize data graphically over time, making it easier to analyze measurement trends.
• Fully Programmable: The 1888 allows users to set voltage, charge time, and measurement time with ease. Direct reading of volume and surface resistivity is available when used with the 1888-11 or other resistivity cells, simplifying measurements.
• High Precision: This instrument offers a resistance measurement range from 1 kΩ to 1000 TΩ, depending on the test voltage. It provides a basic accuracy of 0.25%* at DC voltages up to 1000 V. The 1888 automatically senses the proper current measurement range, eliminating setup errors, and features an automatic zeroing routine to correct for test lead errors.
• Versatile Applications: The 1888 is ideal for calibration of IET’s SRC or VRS resistance standards at voltages up to 1 kVdc and is seamlessly integrable into production testing environments, thanks to its proven design and remote interfaces.
• Multiple Display Options: Users can choose between normal, chart, and graph displays to view measured test voltage, current, and resistance, along with setup parameters. The display also shows whether a zeroing operation has been performed, enhancing the flexibility for calibration and R&D applications.

Specifications:

• Resistance Range:
  • 1×10^6 to 1×10^15 Ω at 1000 Vdc
  • 1×10^5 to 1×10^13 Ω at 100 Vdc
  • 1×10^4 to 1×10^12 Ω at 10 Vdc
  • 1×10^3 to 1×10^11 Ω at 1 Vdc
• Number of Ranges: 7 manually settable plus auto-ranging.
• Voltage Range: 1 to 1,000 V, 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: ±[0.25% +{(RX/VX)(0.0005FS + 0.2pA) + 30Ω/RX}100%].
• 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: ±[0.25% + (0.0005 FS + 0.2 pA)]
  • 100 pA to 1 nA: ±[0.5% + (0.0005 FS + 0.2 pA)]
  • 1 pA to 100 pA: ±[5% + (0.0005 FS + 0.2 pA)]
• Short-Circuit Current: <2 mA.
• Input Impedance: 5 kΩ, ±5%.
• Output Voltage Impedance: 1 kΩ, ±5%.
• Measurement Limits: Pass/Fail (1 limit).
• Interfaces:
  • USB: USB B female connector (rear panel).
  • GPIB: Standard 24 pin connector, conforms to IEEE-488.2; SCPI 1994.0 command set.
  • Ethernet: IEEE 802.3 compliant, with speeds of 10 BaseT (10 Mb/s) and 100 BaseT (100 Mb/s), IP Address Static or DHCP.
• Dimensions:
  • Bench model: 43 cm W x 8.9 cm H x 33 cm D (17″ x 3.5″ x 13″).
  • Front panel extension: 3.8 cm (1.5″).
• Weight:
  • Bench model: 4.0 kg (9 lb).
  • Rack model: 4.5 kg (10 lb).
• Input Terminals: Industry-standard triaxial detector input and BNC voltage output.

This Megohmmeter/High Resistance Meter is an indispensable tool for high-precision resistance measurements, suitable for both manual and automated system applications, making it ideal for research, development, and quality control in various industries.