TM 750-5-3
AN/GVH-1A
Figure 9. Solar Radiation Measuring Set AN/GVH-1A.
1. NOMENCLATURE: Solar Radiation Measuring Set
T y p e _ _ _ _ _ _ _ _ _ _ Strip chart.
Chart speed _ _ _ _ _ _ _ _ 2,4, 6, or 8 in. per
AN/GVH-1A.
hour.
2. TYPE CLASSIFICATION: Standard A.
Chart Dimensions:
Length _ _ _ _ _ _ _ _ _ _ _ 120 ft.
3. SECURITY REQUIREMENTS: Unclassified.
Width _ _ _ _ _ _ _ _ _ _ _ 12 in.
4. PRIMARY USE OR CONCEPT OF EMPLOYMENT:
Speed of response _ _ _ _ _ _ 12 seconds for full-
Measure and continuously record solar radiation falling on
scale pen motion.
the horizontal surface of the detector.
4.
Number of tubes _ _ _ _ _ _ _
Operating temperature
5. BRIEF FUNCTIONAL DESCRIPTION: The solar ra-
range _ _ _ _ _ _ _ _ _ _ _ _ _ 40 to 140 F.
diation set is designed to measure the intensity of radia-
Detector, light intensity:
tion received by the detector. The computation of solar
Spectrum range _ _ _ _ _ _ _ Approximately 0.28 to
radiation is determined by averaging the radiation inten-
4.2 microns.
sity between the time lines multiplied by the time inter-
Sensitivity _ _ _ _ _ _ _ _ _ _ _ Approximately 7.50
val, which is expressed in gram calories per square centi-
millivolts per gram
meter.
calorie per square
6. TECHNICAL CHARACTERISTICS:
centimeter.
Recorder, Optical Pyrometer:
Output signal _ _ _ _ _ _ _ _ _ 0-20 millivolts dc;
maximum output as
Voltage requirements _ _ _ 105 to 125 volts ac,
low as 12 millivolts
60 Hz, single phase.
dc.
Measuring range _ _ _ _ _ _ _ _ 0 to 2 gram calories
per square centi-
Response time _ _ _ _ _ _ 98 percent of output
signal in approxi-
meter per minute.
Input _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 0 to 20 millivolts dc.
mately 30 seconds.
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