Model 187 & 189
Users Manual
Function
Resistance 1
Conductance
Range
500.00Ω
5.0000 kΩ
50.000 kΩ
500.00 kΩ
5.0000 MΩ
5.000 MΩ up to 32.000 MΩ
32.0 MΩ up to 50.0 MΩ
50.0 MΩ up to 100.0 MΩ
100.0MΩ up to 500.0 MΩ
50.00nS
Resolution
0.01Ω
0.0001 kΩ
0.001 kΩ
0.01 kΩ
0.0001 MΩ
0.001 MΩ
0.1 MΩ
0.1 MΩ
0.1MΩ
0.01nS
Accuracy
0.05 % + 10 3
0.05% + 2
0.05% + 2
0.05% + 2
0.15% + 4 2
1.0 % + 4 2
3.0 % + 2 4
3.0% + 2 4
10.0 % + 24
1 % + 10
1.For the 5,000 count mode, divide the number of least significant digits (counts) by 10.
2.For relative humidity greater than 70 %, resistance accuracy is 0.5 % over 1 MΩ and 2.5 % over 10 MΩ.
3.Using relative mode (REL Δ) to zero residual reading.
4.To ensure stated accuracy, switch to conductance mode and verify that the open circuit reading is less than 0.10 nS.
