Specifications

1-8 WFM90D and WFM91D Service Manual

Physical Characteristics

Table1- 8: Physicalcharacteristics

Category Description
Dimensions REF: Instrument:
5i nches (127m m).
3.15 inches (80.0 mm).
9.6 inches (243.8 mm).
Shipping Box:
13.25 x 13.75 x 6 inside
14x 14. 25 x 6.25 outside
Weight REF: With batteries and pouch:
3l b. 13 oz.
Without batteries and pouch:
2lb.8oz.
Shipping weight with packaging:
6lb.8oz.
EnvironmentalCharacteristics

Table1- 9: Environmental characteristics

Category Description
Operating Altitude REQ: To9,842 feet (3000 meters).
Operating Temperature REQ: 0°C to +40°C.
Vibration --Operating REF: 15 minutes each axis at 0.015 inch, frequency varied from 10--55--10Hz in 1-minute
cycles with instrument secured to vibration platform. Ten minutes each axis at any
resonantpoi nt orat 55 Hz if no resonant point is found.
Shock --Non-Operating REF : 100g’s, 1/2 sine, 11m s duration, 3 shocks per surface (18 total).
Transportation REF: Qualified under NTSC TestProcedure 1A, Category II (24-inch drop).
Humidity REF: Will operate at 95% relative humidity for up to five days.