Fluke 2625A, 2620A user manual

2620A, 2625A

Users Manual

through both a known resistance and the sensed resistance. The resulting voltages are measured and appropriate conversions are applied to the measurement, yielding a displayed output in ohms.

Frequency is measured by counting cycles for a known time period. The measurement represents the frequency observed during the sampling time. The instrument can measure a wide range of frequency inputs. Test applications might include measuring line voltage sine wave signals or measuring the output of a voltage-to-frequency converter used in a servo system.

Thermocouple temperature measurements can be made using linearizations for the following nine standard thermocouples: J, K, E, T, N, R, S, B, C. You specify what type of thermocouple is connected to the channel. The reference temperature sensor is built into the Input Module. The instrument applies compensation automatically for thermocouple channels. Open thermocouple detection is indicated by "otc" in the left display. The thermocouples are further described in Table 3-14.

			Table 3-2. DC Voltage, AC Voltage
				Function		Range
		ChannelG		(DC orGAC)		(Note)G
PRESS			F		E		E
THESE
BUTTONS:		D		D		D
TO	0			OFF		Auto	(Completes
SELECT	1			V DC		300.00 mV	Selection
FROM	.			V AC		3.0000V	and returns
THESE	.			Ω		30.000V	to Inactive
CHOICES:				Hz		150.00*V	Mode)
	20			°C or °F

* 300.00 CH 0, 1, and 11

Note: Determine the highest ac or dc voltage value anticipated for this channel. Then select a range large enough to accommodate this value. If the highest voltage cannot be anticipated, select “Auto”.

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