Projekt Elektronik
MESS - UND REGELUNGSTECHNIK GMBH
Page 85
7. Technical Specifications
7.1
Teslameter FM 302 (without AS-Active-Probe):
Measuring modes
DC / AC(RMS)
Ranges
3 ranges per probe,
see technical specification of the AS-probes
sensitivity x1; x10; x100
Bandwidth (-3 dB)
DC:
DC –
≥
100 kHz
AC:
<5 Hz –
≥
100 kHz
depends also on the used probe
Measurement uncertainty DC in x1:
<0,1 % ±2 Digit (at 23 °C ±1 °C)
in x10:
<0,1 % ±5 Digit (at 23 °C ±1 °C)
in x100: <0,1 % ±20 Digit (at 23 °C ±1 °C)
offset adjustable with zero-function
Adjustable offset
±4500 digit
at most sensitive range (x100)
Measurement uncertainty RMS
16.7 Hz:
≤
-0.3 dB (at 23 °C ±1 °C)
50 Hz:
≤
-0.1 dB (at 23 °C ±1 °C)
with level
≥
5 % of range, sine wave
Temperature coefficient
max. ±0.01 %/K, typ. <±0.003 %/K
Zero drift
max. ±3 digit/1K, typ. ±1 digit/1K (DC at most
sensitive range
Input resistance
10 k
Ω
±0.1 %
Operation
keypad with 8 keys
USB interface
Operation temperature range +5 °C to +50 °C
Storage temperature range
-10 °C to +50 °C
Max. relative humidity
70 % at +35 °C
Operation in magnetic field
undisturbed up to at least 350 mT
observe action of force!
Power
9 V battery
at least 400 mAh battery or accumulator,
life time > 20 h, depending on probe type,
jack for 9 V power adapter
9 V DC, 40 mA, minus at inner port
USB interface (low power device)
Dimension:
Length
166 mm (without connected plugs)
Width
88 mm (without connected plugs)
Thickness
31 mm
Weight
225 g (without 9 V battery)
271 g (with 9 V battery)