Frequency meter shockproof D166
Also, this device can be called: D-166, D 166.
D166 frequency is intended for frequency measurement in AC circuits with a nominal frequency of 50 Hz.
Dimensions - 120×120 mm.
Accuracy class - 0,5.
Shock, vibration and tryaskoprochnye.
Frequency D166 are splash-shield devices ferrodinamicheskoy system. Included in the circuit with a separate extension unit P180.
Scope: installation on ships and mobile installations.
Measurement range - 45 Hz to 55 Hz.
- The direct inclusion - 127 V, 220 V;
- Via voltage transformer 380 V/127 V - 380 V.
Change readings caused by changes in ambient temperature - no more than ±0,5% for every 10° change in temperature.
Changing testimony from the influence of external magnetic field strength of 5 e - no more than ±0,5% of full-scale.
Scale length D166 - 190 mm.
Grating angle - 230°.
Working part - 100%.
Operating position frequency - vertical.
Housing material - plastic base; steel casing; casing alloy AL2.
Settling time arrow - no more than 3 seconds.
Insulation resistance at ambient temperature (20±5)° C:
- Relative humidity 80% - at least 50 MOhm;
- Relative humidity of 95±3% - less than 2 MOhm.
Weight of frequency D166 - not more than 3 kg.
Frequency D166 constructively arranged in the same splash-proof housing flush mounting. Devices attached to the shield by four studs, embedded in the casing.
Operating conditions D166:
The ambient air temperature - from -40° C to +60° C.
Relative humidity - 98%.
Frequency D166 stand the test:
- By shaking with an acceleration of 70 m/s2 at a frequency of 80 beats per minute to 120 - for 2 hours;
- A vibration at a frequency of 20 Hz with an amplitude of 1,4 mm span - for 2 h;
- On the type copra six strokes of the maximum intensity.