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基礎信息Product information
產品名稱：英國穩科Wayne Kerr高阻表Megohmmeters
產品型號：1868A
更新時間：2025-03-09
產品簡介：
英國穩科Wayne Kerr高阻表Megohmmeters，WK1868A， Measurement Range: 10kΩ to 1PΩ， Basic Accuracy: ± 2% to 1TΩ
產品特性Product characteristics
英國穩科Wayne Kerr WK1868A高阻表Megohmmeters
High Output Power to 80Watts
Measurement Range: 10kΩ to 1PΩ
Basic Accuracy: ± 2% to 1TΩ
Programmable Test Voltage: 10V to 1kV (1868A), 50V to 5kV (1868D)
Selectable Charge Current: to 80mA (1868A), to 18mA (1868D)
Leakage Current Measurement Down to 1pA (± 2% Basic Accuracy)
Programmable Charge, Delay and Discharge Times
Contact Check Function
5 Programmable Limit Sets
Internal Storage of 4 Tests (20 Steps each) Plus Additional Storage with Optional PCMCIA Memory Card
Standard RS232, IEEE and Remote I/O Interfaces
Graphic LCD with Text, Bar Graph and X-Y Graph Displays
Current or Resistance Display Mode
4 Ranges Plus Automatic Ranging
Automatic Zeroing
Floating Power Supply (1868A) for Measurements on Grounded Devices
Resistance Range 10kΩ - 1PΩ (dependent on test voltage) 4 Ranges or Auto Range:
Range 1: 1pA to 10nA, Range 2: 2nA to 100nA,
Range 3: 20nA to 10uA, Range 4: 2uA to 1mA
Resistance Accuracy For Rx <20G (Vx): 鹵(2% of reading +5cnt) ,
For Rx >20G (Vx): 鹵(Vx/1pA) in ohms.
Max reading: Vx/0.1pA
Rx = Measured resistance in ohms, Vx = Programmed voltage in volts
Voltage Range 10 to 1000V DC in 1V steps, 1868A
50 to 5000V DC in 1V steps, 1868D
Voltage Accuracy 2% of setting, 鹵1V in uncalibrated mode
Source Resistance 100惟, 1kV (1868A); 3.3k惟, 5kV (1868D)
Charge Current 2/25/80mA (1868A); 2/10/18mA (1868D)
Discharge Resistance 100k惟
Current Measure 1pA to 1mA
Current Accuracy 鹵[2% of reading +5cnts +1pA]
Input Impedance For Ix > 10nA: 10k惟 ; For Ix < 10nA: 1M惟 ,Ix = Programmed current in amperes
Measure Limits 5 Programmable Limit Sets
Measurement Result Resistance or Current
Measurement Mode Continuous or Triggered
Averaging 1-100 measurements
Test Speed Trigger Mode: 40msec, Continuous Mode: 90-4000msec,
(Depending on # to Average)
Programmed Time Charge: 0 - 9999msec
(Charge R: 200惟)
Measurement Delay: 0 - 9999msec
Discharge: 0 - 100sec or Auto mode Auto: 0.1(Cx) as Vx goes to 1% Vt
Cx = Measured capacitance (渭F)
Vx = Programmed voltage (V)
Zero/Offset Automatic Zeroing of All Ranges or Individual Zeroing of 4 Ranges
Display LCD graphic display
3.5 digit resolution
Line Graph: X-Y: I or R versus Time Bar Graph: 8 ranges/2 decades/graph, Fixed or auto-scale
Indicators: HV, Measure, Bin, Remote
Standard Interfaces RS232, IEEE 488, Remote I/O
Internal Storage 2 Global Setups (Save Instrument Setup and Sequence Setups)
4 User-Programmable Sequence Setups, (Up to 20 Steps each)
4 Pre-Programmed Sequence Setups
External Storage PCMCIA Interface for 2M SRAM Memory
Cards (20 Setups/20 Steps each)
Input Terminals HV: BNC Connector
I IN: Triaxial Connector
GUARD: Sheathed Banana Plug
Safety Interlock Plug
Password-protected Charge Current (For I > 2mA)
HV Break Red LED/Push Button
Dimensions (w x h x d):12.5 x 4.5 x 15.5 inches (312.5 x 112.5 x 387.5 mm)
Weight 28 lbs (12.7kg) net，41 lbs (18.6kg) ship
Environmental Operating: 10擄C to +40擄C, 80% RH
Power 110V - 240V，50 or 60Hz，400W Max (1.8A at 220V AC, 3.2A at 125V AC)
