Keithley 195A Digital Multimeter
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Keithley 195A is a programmable 5½-digit multimeter with IEEE-488 interface for DC voltage, resistance, and temperature measurement in laboratory and production testing.
Product details
| Model | 195A |
| Manufacturer | Keithley |
| Category | Multimeters & DMMs |
| Availability | Made to order |
Description
Overview
The Keithley Model 195A is a fully programmable benchtop digital multimeter with 5½-digit resolution. It provides precise measurements of DC voltage (100 nV to 1000 V), two and four-terminal resistance (100 µΩ to 20 MΩ), and temperature (-220°C to +630°C). The instrument is designed for laboratory testing, equipment development, and production quality control.
Key Features
- 5½-digit resolution for high-precision measurements
- DC voltage measurement: 100 nV to 1000 V on six ranges
- Resistance measurement: 100 µΩ to 20 MΩ on seven ranges (2 and 4-terminal)
- Temperature measurement: -220°C to +630°C with platinum RTD probes
- DC current: 100 pA to 2 A on six ranges
- Optional AC voltage and AC current measurements (Model 1950 option)
- Standard IEEE-488 (GPIB) interface for remote control and data transfer
- Fully programmable operation modes from front panel or via bus
- Digital calibration feature accessible from front panel or via IEEE-488 bus
- Non-volatile RAM for storing calibration data and operating parameters
- Data storage buffer: stores up to 100 readings at user-selected rate
- Front and rear panel input terminals for flexible bench and rack-mount configurations
- Auto-ranging capability for simplified measurements
- External trigger input and trigger output for automated measurement sequences
Applications
- Laboratory and research measurements
- Equipment development and prototype testing
- Production quality control and verification
- Automated measurement systems via IEEE-488 control
Specifications
| Display Resolution | 5½ digits |
| DC Voltage Range | 100 nV to 1000 V (6 ranges) |
| Resistance Range | 100 µΩ to 20 MΩ (7 ranges, 2 and 4-terminal) |
| Temperature Range | -220°C to +630°C with platinum RTD probes |
| DC Current Range | 100 pA to 2 A (6 ranges) |
| AC Voltage (Optional) | up to 700 V (with Model 1950 option) |
| AC Current (Optional) | Available with Model 1950 option |
| Data Storage | 100 reading buffer |
| Interface | IEEE-488 (GPIB) |
| Display Units | Celsius and Fahrenheit for temperature |
| Digital Calibration | Accessible from front panel or IEEE-488 bus |
| Input Terminals | Duplicated on front and rear panels |
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Keithley 195A Digital Multimeter
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