|
|
General description of the
used KEITHLEY 197A
for sale.
The Keithley 197A is a lightweight, portable DMM with a battery pack option. It combines 5 1/2-digit resolution (on a 220,000-count display) with 1µV, 1nA, 1m-ohm sensitivity. Basic DCV accuracy is 0.011%. Extended Performance Measure voltage over nine decades from 1µV to 1000V. Input resistance on the two lowest voltage ranges exceeds 1G-ohm. TRMS AC measurements can be made to 100kHz. Make 2- or 4-terminal ohms measurements over 11 decades from 1m-ohm to 220M-ohm. Six current ranges measure from 1nA to 10A. Battery Option The 1978 battery pack option enables data to be collected in locations where AC power is not available or where isolation from line voltage is required for safety. Relative: Pushbutton allows zeroing of on range readings. Allows readings to be made with respect to baseline value. Front panel annunciator indicates REL mode. Data Loggerand Min/Max: 100 reading storage capacity; records data at one of six selectable rates from 3 readings/second to 1 reading/hour or by manual triggering. Also detects and stores maximum and minimum readings continuously while in data logger mode. Specifications. DC Volts: range 200 mV, resolution 1 µV; range 2 V, resolution 10 µV; range 20 V, resolution 100 µV; range 200 V, resolution 1 mV; range 1000 V, resolution 10 mV. TRMS AC Volts: range 200 mV, 2V–200V, 750V. Ohms ranges: 200 ohm, 2 k-ohm, 20 k-ohm, 200 k-ohm, 2 M-ohm, 20 M-ohm, 200 M-ohm.
|