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General| Brand | Fluke |
|---|---|
| Model | 845A |
| Category | Measuring Instruments |
| Language | English |
Overview of the Fluke Model 845 High Impedance Voltmeter-Null Detector's capabilities.
Detailed electrical characteristics and performance parameters of the instrument.
Operating and storage temperature and humidity ranges, shock and vibration resistance.
Physical dimensions, weight, and mounting options for the instrument.
Overview of operating procedures and where to find assistance.
Identification and function of front-panel controls and terminals.
Steps for initial setup and powering on the instrument.
Procedure for verifying the battery charge state of the Model 845AB.
Instructions for charging the internal batteries of the Model 845AB.
Procedure for adjusting the mechanical zero of the meter.
How to use the instrument for DC voltage measurements.
How to use the instrument to detect nulls in circuits.
Method for calculating unknown voltages using a standard cell.
Applications and usage of the isolated output feature.
Using the instrument as a DC isolation amplifier with gain adjustment.
Connecting and using a recorder with the instrument's output.
General operational advice and considerations.
Understanding and mitigating thermoelectric effects and other spurious signals.
Explanation of thermoelectric effects and how to minimize them.
Considerations for measurements with high source impedance.
Information on voltage limits and overload protection.
Explanation and use of the guard terminal for improved performance.
Methods to increase input resistance on specific ranges.
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