Campbell MS-80, Руководство по эксплуатации продукта, Страница: 12 / 20

Table 7-1: Multipliers required for flux density and total fluxes
Units Multiplier Output processing
W × m
–2
M Average
MJ × m
–2
M × t × 0.000001 Totalize
kJ × m
–2
M × t × 0.001 Totalize
cal × cm
–2
M × t × 0.0239 × 0.001 Totalize
cal × cm
–2
× min
–1
M × 1.434 × 0.001 Average
W × hr × m
–2
M × t / 3600 Totalize
M = 1000/c, where c is the sensor output in μV / W × m
–2
t = data logger program execution interval in seconds
8. Internal PT100 programming
Measure the PT100 resistance using the
BrHalf3W()
CRBasic instruction, then convert the
resistance by using the PRT() instruction. A typical BrHalf3W() instruction is:
BrHalf3W (Rs,1,mV200,3,Vx1,1,2500,True,0,60,100,0)
This assumes the 3WHB10K is connected to the SE3, SE4, and VX1 data logger terminals.
A typical PRT() instruction is:
PRT
(Sensor_Temp,1,Rs,1.0,0)
9. Maintenance and
troubleshooting
The MS-80 has no service items requiring scheduled replacement. There is no accessible
desiccant cartridge to maintain. Use pure alcohol or distilled water and a lint-free cloth to clean
the dome, removing smears and deposits. Local conditions and application dictate cleaning
interval. Sophisticated research applications require daily cleaning. For typical PV applications,
clean once per week, bi-monthly, or monthly. The MS-80 should be recalibrated following
industry standard best practices such as ASTM G167, ISO 9846, ASTM E824 or ASTM G207 by an
MS-80 Secondary Standard Pyranometer 10