7.4 General specifications
Narda NBM-520 53
7.4 General specifications
7.5 Standards compliance
Recommended
calibration interval
24 months
1)
1) only for basic instrument; probes are specified separately
MTBF >10 years (basic unit with probe)
Batteries Standard rechargeable NiMH batteries,
2 x AA (Mignon) type, 2700 mAh
Operating time approx. 22 hours (without backlight)
approx 16 hours (with permanent backlight)
Charging time 2 hours
Battery status indicator 100%, 80%, 60%, 40%, 20%, 10%, low (<5%)
Temperature range Operational: -10 °C to +50 °C
Non-operational (transport): -30 °C to +70 °C
Humidity 5 to 95% relative humidity, no condensation
29 g/m³ absolute humidity (IEC 60721-3-2 class 7K2)
Immunity to radiated
electromagnetic fields
200 V/m (100 kHz to 60 GHz)
Note: The immunity may be less than
the specified measurement range of a probe
Dimensions (H x W x D)
basic unit
Series A to C:
Series D...:
38 x 52 x 195 mm (without probe)
38 x 52 x 201 mm (without probe)
Dimensions (H x W x D)
transport case
2400/90.07
2400/90.06
390 x 458 x 210 mm (outside dimensions)
470 x 545 x 230 mm (outside dimensions)
Weight basic unit approx. 300 g (without probe)
Weight transport case 2400/90.07
2400/90.06
3.1 kg (empty)
4.2 kg (empty)
Accessories
(included in set)
rigid shell case, AC adapter/charger, shoulder strap,
O/E converter, fiber optic cable (2 m),
NBM-TS software (free download), operating manual,
calibration certificate
Climatic Storage 1K3 (IEC 60721-3) extended to -10 °C to +50 °C
Transport 2K4 (IEC 60721-3) restricted to -30 °C to +70 °C
Operating 7K2 (IEC 60721-3)
for the basic unit extended to -10 °C to +50 °C
Mechanical Storage 1M3 (IEC 60721-3)
Transport 2M3 (IEC 60721-3)
Operating 7M3 (IEC 60721-3)
Ingress Protection IP 42 (IEC 60529)
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