Fluke 45 user manual Environmental, Appendices, Specifications A

Appendices

Specifications A

Note

When the meter is set to measure frequency and there is no input signal (i.e., the input terminals are open), the meter may read approximately 25 kHz (rather than zero). This is due to internal capacitive pickup of the inverter power supply into the high-impedance, input circuitry. With source impedance of <2 kΩ , this pickup will not affect the accuracy or stability of the frequency reading.

Environmental

Warmup time	1 hour to rated specifications for warmup < 1 hour, add 0.005 % to all
	accuracy specifications.
Temperature Coefficient	<0.1 times the applicable accuracy specification per degree C for 0 °C to
	18 °C and	28 °C to 50 °C (32 °F to 64.4 °F and 82.4 °F to 122 °F)
Operating Temperature	0 °C to 50	°C (32 °F to 122°F)
Storage Temperature	-40 °C to + 70 °C (-40 °F to 158°F)
	Elevated temperature storage of battery will accelerate battery
	self-discharge. Maximum storage time before battery must be
	recharged:
	20	°C – 25 °C		1000 days
	50	°C	180 days
	70	°C	40 days

Relative Humidity (non-condensing)

To 90 % at 0 °C to 28 °C (32-82.4 °F),

To 80 % at 28 °C to 35 °C (82.4-95 °F),

To 70 % at 35 ° C to 50 °C (95 °F -122 ° F) except to 70 % at 0 °C to 50 °C (32 °F -122 °F) for the1000 kΩ , 3 MΩ , 10 MΩ , 30 MΩ , 100 MΩ ,and 300 MΩ ranges.

Operating	0 to 10,000 feet
Altitude
Non-operating	0 to 40,000 feet

Electromagnetic

In an RF field of 1 V/m on all ranges and functions: Total Accuracy =

Compatibility

Specified Accuracy +0.4% of range. Performance above 1 V/m is not specified

Vibration

3 G @ 55 Hz

Shock

Half sine 40 G. Per Mil-T- 28800D, Class 3, Style E.

Bench Handling. Per Mil-T-28800D, Class 3.

A-9