I've "ported" my DM42 program for Relative humidity and dew point based on wet/dry thermometers in a psychrometer.
Instead of diving into a psychrometric table or HS Molliére diagram, one can have the results calculated and displayd directly from the calculator.
(You'll have to provide the thermometers, wet cloth and a flinging device yourself)
Code: Select all
0000: { Prgm # : 292 bytes / 64 steps }
0001:▸LBL 'RHD'
0002: FIX 02
0003: INPUT 'Tw'
0004: INPUT 'Td'
0005: INPUT 'mB'
0006: CLSTK
0007: 17.27
0008: RCL× 'Td'
0009: 237.3
0010: RCL+ 'Td'
0011: /
0012: E↑X
0013: 6.108
0014: ×
0015: STO 'Es'
0016: 17.27
0017: RCL× 'Tw'
0018: 237.3
0019: RCL+ 'Tw'
0020: /
0021: E↑X
0022: 6.108
0023: ×
0024: STO 'Ew'
0025: 115E-5
0026: RCL× 'Tw'
0027: 1
0028: +
0029: RCL 'Td'
0030: RCL- 'Tw'
0031: ×
0032: RCL× 'mB'
0033: 66E-5
0034: ×
0035: +/-
0036: RCL+ 'Ew'
0037: STO 'Ea'
0038: RCL 'Ea'
0039: RCL 'Es'
0040: /
0041: 100
0042: ×
0043: STO 'RH'
0044: RCL 'Ea'
0045: 6.108
0046: /
0047: LN
0048: 17.27
0049: /
0050: STO 'Ba'
0051: 237.3
0052: RCL× 'Ba'
0053: 1
0054: RCL- 'Ba'
0055: /
0056: STO 'Dew'
0057: CLSTK
0058: 'RH%: '
0059: RCL+ 'RH'
0060: 'Dewpoint *C: '
0061: RCL+ 'Dew'
0062: STOP
0063: All 00
0064: END