Campbell 21X Manuale dell'Operatore Pagina 112
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01: 4
02: 4
03: 2
04:
4
05: 2
PAR. DATA
NO.
TYPE
DESCRIPTION
Number
of values
to
move
1st source
location
Step
of source
1 st destination
location
Step
of destination
***
55 sTH
ORDER
POLYNOMIAL
**i
FUNCTION
Evaluate
a
Slh order
polynomialof
the
form.
F(X)=9919
1 X+C2X2+C3X3a94X449515
where
C0
SECTION 10, PROCESSING
INSTRUCTIONS'
Computation of Saturation
Vapor Pressure.
J.
Appl.
Meteor.
16, 100-103.
Saturation vapor
pressure
over
ice
(SVPI)
in
kilopascals for a OoC to
-50oC
range can be
obtained using
Instruction 55 and
the
relationship
SVPI=
-.00486
+ .85471X+
.2441X2
where X
is the SVPW derived
by
lnstruction
56.
This relationship was derived
by.Campbell
Scientific from the equations
for the SVPW and
the SVPI
given
in Lowe's
paper.
PAR. DATA
NO-
TYPE
DESCRIPT1ON
01:
4 Input location of
air temperature
oC
IEMP.]
02:
4
Dest.
input location
for saturated
vapor
pressure
IVP
or Zl
Input locations altered:
1
***
57 VAPOR
PRESSURE
FROM
***
-
WET./DRY.BU LB
TEMPERATU RES
FUNCTION
This instruction calculates
vapor
pressure
in
kilopascals from wet- and
dry-bulb
temperatures
in
oC.
The algorithm
is
of the type
used by
the
National
Weather Service:
VPW
=
VPW
-
A(1
+ B*TWXTA
-
TW) P
ambient
vapor
pressure
in
kilopascals
saturation
vapor
pressure
at the
wet-
bulb temperature
in kilopascals
wet-bulb temperature,
deg.
C
ambient
air temperature,
deg. C
air
pressure
in kilopascals
0.000660
0.00115
Although
the algorithm
requires
an air
pressure
entry,
the
daily
fluctuations
are small
enough
that for most applications
a fixed
entry
of
the
standard
pressure
at the site
elevation will
suffice. lf a
pressure
sensor
is employed, the
current
pressure
can
be used.
argument X
power,
+99999
to
coefficients
C0 coefficient
C1 coetficient
C2
coefficient
C3 coefficient
C4 coetficient
C5
coefficient
Input locations
altered:
1*
Reps
C5 are the
coefficients for the
to the
zero through filth
. The magnitude of
the user
is limited to
a
range
of
Polynomials
with
this
range can be modified
lc0l
tcll
tc2l
lcal
tc4l
tc5l
by
the
X value by an appropriate
the
coefficients
within
the entry
factor to
range.
Pre-$caling
can also
be used to
modify
coefficients
phich
are
very close to 0
in
order
to
increase
the
number of
significant digits.
PAR.
DATA
NO. TYPE
DESCRIPTION
Repetitions
IREPS]
Starting
input
location for X
txl
Dest.
input location for
F(X)
[F(X)
or z]
VP=
VP=
01: 2
02: 4
03: 4
04:
FP
05:
FP
06: FP
07: FP
08: FP
09:
FP
TW=
TA=
P=
A=
B=
***
56 SATRAT|ON
VAPOR
PRESSURE
***
FUNCTION
Calculate sdturation
vapor
pressure
over
water
(SVPW)
in
kilopascals
from the
air
temperature
(oC)
and
plape
it in an
input
location. The
algorithm
fof obtaining
SVPW
from
air
temperature
(oC)
is taken
from: Lowe, Paul
R.,
1
976:
An
Approximating
Polynomial
for
10-5
- 21X MICROLOGGER 1
- OPERATOR'S 1
- CopynlcHT 1
- GAI\/ 2
- SiCIEN'rIFIC 2
- OPT1ONS 3
- 1. FUNCTIONAL 4
- 2. INTERNAL 4
- 4. EXTERNAL 4
- 5. TELECOMMUNICATIONS 4
- PROGRAMMING 5
- EXAMPLES 5
- GLOSSARY 6
- TABLE 6
- I SELECTED 7
- CAUTIONARY 8
- MICROLOGGER 9
- OVERVIEW 9
- I contain 9
- OVl-z. 21X Wiring 10
- 1. Input 11
- OV2-1. lnstruction Types 12
- 2. PROCqS$NG TNSTRUCTTONS 13
- OV3. PROGRAMMING 14
- 2. Enter 15
- 3. Loaded from 16
- (lD:Data) 17
- 21 .234oC 18
- Ffalstorage 19
- 0. The Output Flag is 22
- 1. On-line output 23
- 96 Inst. 96 24
- RETRIEVAL 25
- SPECIFICATIONS 26
- 1. FUNCTIONAL 27
- A PROGRAM 28
- COMPILING 29
- LOGGING 29
- Intermediate Final 30
- A O4:XXXX 31
- "B 32
- A 01:0p 33
- 2hex) Discard current 35
- 3hex) Send signature 35
- 4hex) Load 35
- 5hex) Exit and 35
- 2\ The output array 36
- 0.000 +0.001 37
- . For example 38
- This is 39
- 1. microvolts 40
- 333. microvolts 40
- 3.7 USE 41
- 3.8 PROGRAM 42
- 1. A Subroutine 43
- 3. An 43
- 4. A case 43
- 3.9 INSTRUCTION MEMORY 44
- TEMP-RTD R 44
- SDM-CD16 6 44
- 41 z+EXP(x) 45
- 1+bins*R 46
- ERRORICODES 47
- EXTERNAL 48
- STORAGE 48
- PERIPHERALS 48
- Key ID:DATA 49
- A. Data transfer 50
- Drain 200mA typ./S 51
- Length C-60 recommended 51
- Quality 51
- CABLES ] 52
- 3. Insert 53
- I 54
- 4, An illegal character 55
- Iffi l:ff itffi 56
- REMOTE PROGRAMMING 57
- 5. TELECOMMUMCATIONS 57
- PIN SERIAL 59
- PIN ABR UO 59
- 6.2 ENABLING 60
- 6.3 INTERRUPTING 60
- 6.5 INTERFACING WITH 60
- ABR YO FUNCTION 61
- 7 DATA BITS 62
- I AT IPS-2's and 63
- 7.2 DATALOGGER 64
- 7.3 THERMOCOUPLE 65
- 7.6 207 TEMPERATURE 66
- Thermocouple 66
- 02: P12 66
- TIPPING 67
- 1 P 3 68
- 5 0.254 68
- Temperature 69
- 7.10 1OO 69
- Temperature RTD 70
- R" 70
- 05: 5000 71
- ADJUSTABLE 72
- :calculated to 73
- P34 Z=X+F 73
- 7.15 NONLINEAR 74
- -218.76 75
- 55 Polynomial 76
- SpatialAverage 77
- 02: P92 78
- 8.3 USING CONTROL 79
- SETS 1_16 80
- Al Mode 81
- 02: 641 81
- Excite, Delay,Volt(S 82
- Temp 107 Probe 82
- TO 0.540 83
- DESCRIPTION 84
- M(V2) 38 85
- Block Move 86
- 0.'l 87
- 0.69215 88
- 02: 1024 89
- SII1ULATED 90
- 02; 2048 91
- 02". 2048 92
- ZLoc' 93
- 9. INPUT/OUTPUT 94
- 0.3 Hz to 1000 Hz 95
- Input locations altered: 1 97
- Input locatiQns altered: 98
- Input locations 99
- 9 Output 100
- TYPE DESCRIPTION 101
- 22 EXCITATION 102
- . Locations 1-20 103
- A Trigger 104
- 3. Entering 105
- (Parameters 106
- LOCATION, "** 108
- 40 LN(X) 109
- 46 x MOD F 110
- 54 BLOCK 111
- . The magnitude of 112
- 59 BRIDGE TRANSFORM 113
- 60 FAST 113
- 2X=Yag6ilude&Phase 114
- 10. PROCESSING 115
- 1.24H2 115
- F*1*19'*g'; 116
- *F*A/N<fi<i*F*A/N 116
- LOC. REPRESENTATIVE 117
- LOC. REPRESENT 117
- 126 50411024 or 1 117
- 2. The 21X 118
- 62 COVARIANCE/CORRELATION 118
- 1. Input Processing 119
- 2. Averaging 119
- 3. Output Processing 119
- 1. Means: 120
- I minute and one 120
- N' is 121
- Quadrant 121
- 11. OUTPUT 122
- 01: 2 Repetitions 123
- 02: 4 Starting input 123
- *" 124
- 2 Repetitions 125
- 4 Number 125
- 2 Form 125
- 78 SEll HIGH 126
- 80 SET ACTIVE 126
- Ct',1,t Cu,z cu,ru 127
- PROGRAM 129
- CONTROL 129
- 4 lteration count 130
- 10: P87 131
- NO. TYPE DESCRIPTION 132
- NO. TYPE 133
- ASCII 1 134
- Binary 2 134
- 0-RFModem 135
- 01: 4 Decimal 136
- 1 1200 136
- 2 9600 136
- 3 76.800 136
- SECTION 137
- 21X MEASUREMENTS 137
- Setup Amplifier Integrotion 138
- 13.3 THE 139
- Error Constants 140
- 1 3.3-1 1, respectively 140
- 8723 j 141
- 22 15 62 141
- Error 142
- 2) V" 143
- 5oo 18603 144
- Rr does 145
- 13.4 THERMOCOUPLE 146
- .--.--'-\ 147
- Junction 148
- Source Error 150
- 13.5 BRIDGE 151
- 5 v RANGE) 152
- (milliseconds) 153
- '1-X 154
- 13.6 RESIST 155
- Quiescent 156
- REQUIREMENTS 157
- 3. Typicalcurrent 157
- I alkaline 158
- MSX5 MSX10 159
- 14.5 DIRECT 159
- 14.7 USE 160
- 14.8 GROUNDING 160
- MAINTENANCE 161
- CALIBRATION 161
- 9. Lock 162
- 14. INSTALLATION 163
- *ffiqgffiililH 164
- A. GLOSSARY 165
- : A number which 167
- B. PROM SIGNATURES 168
- APPENDIX C 169
- TELECOMMUNICATIONS 169
- 00 00 00 170
- F 171
- C. BINARY TELECOMMUNICATIONS 171
- 51,S0 represent 172
- M represents 172
- C. BINARY 173
- APPENDIX 174
- ASCII TABLE 174
- E. CHANGING 175
- E.3 CHANGING 176
- F. DOCUMENTATION 177
- 3 Save Program on 178
- ""r-",=L 179
- ............8 180
- 14. INST 181
- "t=r",=L 182
- MEASUREMENTS 183
- 21X TNDEX 184
- 60] 10-6 185
- I nitiate Telecommunications 186
- 72j 11-3 189
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