Care And Maintenance; Technical Data, Measuring Tolerances - Conrad Jumbo FM 350 LED Bedienungsanleitung

Care and Maintenance

The panelmeter is maintenance-free except for occasional clea-
ning. Clean the unit or the display window using a clean, lint-free,
antistatic, dry cleaning cloth.
Do not use cleaning agents containing carbon or
gasoline, alcohol or similar substances for cleaning.
Such substances would attack the surface of the
measuring device. Furthermore, the vapours are in-
jurious to health and are explosive. For cleaning use
no sharp-edged tools, screwdrivers or metal brus-
hes etc.
Technical Data and Measuring Tolerances
Technical Data
Display .......................................: 3 1/2-digit LED display,
Polarity display...........................: „-", automatic
Off-scale display ........................: „1" or „-1" is displayed
Max. input voltage......................: ± 199.9 mV.d.c., without a series
Method of measurement............: Dual-slope
Measuring rate ...........................: 2.5 measurements per second
Decimal point setting .................: Soldering jumper on DP1, DP2
Operating voltage.......................: 5 V.d.c. , SELV voltage, stabilised
Power consumption ...................: Approx. 450 mA
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max. reading: 199.9
resistor = delivery version
(5 measurements/2 seconds)
or DP3
Input resistance..........................: > 1 MOhm
Working temperature..................: 0 °C to +50 °C, relative humidity
Temperature coefficient..............: Better than 100 ppm/°C
Type of attachment ....................: „Snap In"
Mass...........................................: Approx. 130 g
Dimensions WxHxD ...................: 96 x 48 x 36.5 mm
Mounting dimensions WxHxD ...: Approx. 92.5 x 44 x 33.5
Measuring Tolerances
The accuracy of the measurement results applies at
a temperature of +23 °C ± 5 K, at a relative humidity
of < 85 %, not condensing. Specification of accu-
racy: ± (% of reading + number of digit position er-
rors = digits = dgts)
Mode Measuring range Accuracy
DC volt ±199.9 V ± (0.5% + 2 dgts) ± 200 mV.d.c.
The input resistance is > 1 MOhm
< 85%, not condensing
(cutout size)
Max. input variable
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