IET LABS 1888 Ultra Precision Megohmmeter/High Resistance Meter
- Superior Direct Replacement to the IET 1865 Plus Megohmmeter
- Measurements from 1 kΩ to 1000 TΩ, with auto ranging
- 0.3% measurement accuracy
- Large color touchscreen and intuitive graphical user interface simplifies use
- 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, current and applied voltage or resistivity when used with a volume/surface resistivity cell
- GPIB, Ethernet and USB interfaces standard make automation easy
- Based upon the QuadTech/IET 1865 Plus that has many years in the field
- Safety interlock and high voltage indicator for operator safety
- ASTM D 257 Volume and Surface Resistivity with 1865 Plus
The 1888 Megohmmeter/High Resistance Meter, with color touchscreen display, is used for high accuracy measurements of insulation resistance on a wide variety of components, materials and electronic devices. Resistance values greater than 1000 TΩ can be measured, the 1888 has a basic accuracy of 0.25%* at DC voltages up to 1000 V.
Specification
1888+ Megohmmeter High Resistance Meter Basic Specifications
Resistance range:
1x106 to 1x1015 Ω at 1000 Vdc
1x105 to 1x1013 Ω at 100 Vdc
1x104 to 1x1012 Ω at 10 Vdc
1x103 to 1x1011 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: ±[0.25% +{(RX/VX)(0.0005FS + 0.2pA) + 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 ±[0.25% + (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:Remote Control:
USB: USB B female connector rear panel
IEEE:
GPIB standard 24 pin connector, conforms to IEEE- 488.2; SCPI 1994.0 command set; Hardware or software programmable addressing range of 1 to 30.
Ethernet:
IEEE 802.3 compliant, Speeds 10 BaseT (10 Mb/s) and 100 BaseT (100 Mb/s), IP Address Static or DHCP, Factory setting 192.168.0.254 static
Dimensions:
Bench model: 43 cm W x 8.9 cm H x 33 cm D (17" x 3.5" x 13") in front of panel: 3.8 cm (1.5").
Weight:
Bench model: 4.0 kg (9 lb); Rack model: 4.5 kg (10 lb); weight specifications are nominal.
Input terminals: Industry standard triaxial detector Input and BNC voltage output.
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