MS90373B
TABLE I. Part numbers and descriptions
MS Part No. |
Description |
Hours Range |
-1 |
Indicator Assembly, 115 Vac (-3-4-5) |
1000 |
-2 |
Indicator Assembly, 28 Vdc (-3-4-6) |
1000 |
-3 |
Indicating Cell Only |
1000 |
-4 |
Holder Only |
--- |
-5 |
115 Vac Regulator Only |
1000 |
-6 |
28 Vdc Regulator Only |
1000 |
2 REQUIREMENTS
2.1 Dimensional. The indicator shall conform to the dimensions given in figures 1 through 3. a. All dimensions are in inches.
b. Tolerances, unless otherwise specified, are ± 0.015
2.2 Weight. The complete assembly (MS90373-1 or -2) shall not exceed 1 ounce.
2.3 Time range. Total readout shall be 1,000 hours.
2.4 Scale length. The scale length shall be 0.700 ± 0.009 inches.
2.5 Indicating cell installation and retention. Indicting cell installation and retention shall meet the following requirements:
a. The holder body shall be polarized to accept only the smaller indicating cell end.
b. The holder cap shall hold the indicating cell captive when the cap is removed from the holder body.
c. The holder cap shall not obscure the scale of the indicating cell.
d. The indicating cell shall be removable from the holder cap without tools.
2.5 Operating temperature range. -20°C to 85°C. The indicator may also be used in equipment with an operating range of -55°C to 85°C with accurate operation above -20°C.
2.6 Storage temperature range. -80°C to 85°C.
2.7 Power consumption. Power consumption at the rated voltage per table I shall not exceed 0.1 watts.
2.8 Life accuracy. Accuracy shall be ± 5% from -20°C to 85°C over the following conditions: MS90373-1: 115Vac ± 13Vac, 50 HZ to 2400 Hz
MS90373-2: 23Vdc to 29Vdc
2.9 Color. Regulator and holder shall be black with the word "TIMER" printed in white on the holder cap face.
2
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