Specifications - Velleman DVM891 Bedienungsanleitung

4. Connect the black test lead (-) to the "COM" terminal and the red test
lead (+) to the other terminal of the adaptor socket.
5. The display will show the approximate hFE-value at the moment of
testing. Base current 10µA, Vce 2.8V.
i. Measuring Temperature
1. Connect the black test lead (-) to the "COM" jack and the red test lead
(+) to the "mA" jack.
2. Select the TEMP-range with the FUNCTION switch.
3. Insert the plug of the K-thermocouple in the adaptor socket according
to the indicated polarity.
Remark: push the temperature probe firmly into the socket.
4. Connect the black test lead (-) to the "COM" terminal and the red test
lead (+) to the other terminal of the adaptor socket.
5. The display will show the temperature.
Remark: without the thermocouple in place, the display will show the
ambient temperature.
j. Measuring Frequency
1. Connect the black test lead (-) to the "COM" jack and the red test lead
(+) to the "VΩHz" jack.
2. Select the "KHz" range with the FUNCTION switch and connect the test
leads to the source or load to be tested.
Remarks:
Do not apply more than 220Vrms to the input.
Use shielded cable for measuring a weak signal in a noisy
environment.
k. Automatic Power off
1. The device will be deactivated automatically when the FUNCTION and
RANGE switch has not been used for 15 minutes. This energy-saving
feature extends the life of your battery.
2. The meter will be reactivated if the FUNCTION and RANGE switch is
turned or if the power switch is pressed again.
5.

Specifications

Maximum accuracy is guaranteed for a one-year period after calibration.
Ideal circumstances require a temperature of 23°C (± 5°C) and a max.
relative humidity of 75%.
a. General
Max. Voltage between Terminal and
Earth
Display
Fuse Protection
Power Supply
01.10.2009
DVM891
600VDC or 600Vrms AC (sine wave)
3 ½ digit LCD, 2 to 3 readings/sec.
200mA-range: F 0.2A/250V resettable
10A-range: F 10A/250V
9V-battery
8
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