Specifications - Somogyi Elektronic DM 4070 Bedienungsanleitung

measurement range on the LCD display. If the capaci-
tor is leaking, either a "1" or a figure much greater than
the actual value will be displayed on the LCD display. If
the capacitor is broken, a "0" will be displayed in every
measurement range on the LCD display.
When measuring low value (pF) capacitors, use the
shortest possible probe cables and when clearing the
unit the measuring points of the probe cables should be
close to the pins of the capacitor to be measured, for the
benefit of higher accuracy.
If using probe cables, keep in mind that they might
be high capacity. First, measure the probe cables'
capacity (open circuit) in order to subtract it from the
reading.
The value of many capacitors (particularly electrolytic
capacitors) can be greater than the rated value, which is
normal except if they are shorted.
If the capacitor's value changes significantly on chang-
ing the measurement range, first measure its resistance
as you are probably measuring a leaking capacitor. The
capacity of a leaking capacitor can be lower in lower
measurement ranges.
Measurement limit Resolution
200 pF 0.1 pF
2 nF 1 pF
20 nF 10 pF
200 nF 100 pF
2 μF 1 nF
20 μF 10 nF
200 μF 100 nF
2000 μF 1 μF
Inductivity measurement (µH, mH, H)
Set the dial to the appropriate measurement range.
Insert the pins of the inductor to be measured into the
two nearest "+" and "-" sockets, or connect the red probe
cable to the "+" socket, and the black one to the "-" sock-
et. Connect the measurement probes to the circuit to be
measured. Read the value.
Note:
In order to avoid sporadic inductivity figures, use the
shortest possible probe cable in lower measurement
ranges. This instrument cannot be used for measuring
the Q factor of an inductor.
Measurement limit Resolution
200 uH 0.1 uH
2 mH 1 uH
20 mH 10 uH
200 mH 100 uH
2 H 1 mH
20 H 10 mH
Resistance measurement (Ω, KΩ, MΩ)
Set the dial to the appropriate measurement range.
Insert the pins of the resistor to be measured into the
two nearest "+" and "-" sockets, or connect the red probe
cable to the "+" socket, and the black one to the "-" sock-
et. Connect the measurement probes to the circuit to be
measured. Read the value.
Note:
To ensure more accurate measurement, under the 200
Ω measurement range first measure the resistance of
Accuracy
±(2.5% offset + 5 digits)
±(3.0% offset + 5 digits)
Accuracy
±(3% offset + 5 digits)
±(2% offset + 5 digits)
±(5% offset + 5 digits)
the probe cables by shorting the probe cables then sub-
tract it from the measured figure.
Measurement limit Resolution
20 Ω 0.01 Ω
200 kΩ 0.1 Ω
2 kΩ 1 Ω
20 kΩ 10 Ω
200 KΩ 100 Ω
20 MΩ 10 kΩ
Battery and fuse replacement
If the " " icon appears on the display, the batteries
require replacing. Prior top replacing the battery, turn off
the instrument and unplug the probe cables. Remove
the instrument from its case then remove the battery
compartment screw from the rear panel. Change the bat-
tery. Observe the correct polarity. Replace the cover and
tighten the screw.
Warning:
Before opening the instrument, make sure that the probe
cable has been removed from the measuring circuit.
Replace and tighten the screws so that the device oper-
ates in a stable manner during use and accident hazards
are avoided.
Accessories: • Instructions for Use • probe cable • 9
V (6F22) battery • box
Waste equipment must not be collected sepa-
rately or disposed of with household waste be-
cause it may contain components hazardous to
the environment or health.
Used or waste equipment may be dropped off free of
charge at the point of sale, or at any distributor which
sells equipment of identical nature and function. Dispose
of product at a facility specializing in the collection of
electronic waste. By doing so, you will protect the en-
vironment as well as the health of others and yourself.
If you have any questions, contact the local waste man-
agement organization. We shall undertake the tasks per-
tinent to the manufacturer as prescribed in the relevant
regulations and shall bear any associated costs arising.
Batteries, whether alkaline or rechargeable, must not be
handled together with regular household waste. It is the
legal obligation of the product's user to dispose of batter-
ies at a nearby collection center or at a retail shop. This
ensures that the batteries are ultimately neutralized in an
environment-friendly way.

Specifications

• Measurement category: CAT II
• Ambient temperature and humidity: 0 – 40 °C (<80%
relative humidity)
• Maximum allowed voltage between the measurement
device and ground: 60 V
• Display: 3 1/2 digit LCD display, up to 1999 digits
• Duration of measurement: 0-5 seconds
• Power supply: 9 V (6F22) battery
• Reading over measurement limit: "1" appears in the
display window.
• Polarity indication: "-" is displayed for negative polarity.
• Exhausted battery: "
• Dimensions: 185 mm x 93 mm x 35 mm
• Weight: approx. 290 g (including battery)
Accuracy
±(1% offset + 5 digits)
±(0.8% offset + 2 digits)
±(2% offset + 5 digits)
" icon appears on the display.