Campbell-scientific CS547A-L Conductivity/Temperature Probe and A547A Uživatelský manuál Strana 24

  • Stažení
  • Přidat do mých příruček
  • Tisk
  • Strana
    / 30
  • Tabulka s obsahem
  • KNIHY
  • Hodnocené. / 5. Na základě hodnocení zákazníků
Zobrazit stránku 23
CS547A Conductivity and Temperature Probe and A547 Interface
9. Deriving a Temperature Compensation Coefficient
1. Place the CS547A in a sample of the solution to be measured. Bring the
sample and the probe to 25°C.
2. Enter the example program from Section 5.2 in the datalogger and record
C
t
at 25°C from Location 3. This number will be C
25
in the formula in
Step 4.
3. Bring the solution and the probe to a temperature (t) near the temperature
at which field measurements will be made. This temperature will be t (in
°C) in the formula. Record C
t
at the new temperature from Location 3.
This number will be C in the formula in Step 4.
4. Calculate the temperature coefficient (TC) using the following formula.
TC
CC
tC
C=∗
−∗
°100
25
25
25
()
()
%/=
Enter TC in the appropriate location (nnn) as shown in the program segment in
Section 5.2 .
10. Therm107 / P11 Instruction Details
Understanding the details in this section is not necessary for general operation
of the CS547A probe with CSI's dataloggers.
The Therm107 instruction (or P11 in Edlog) outputs a precise 2 VAC
excitation (4 V with the 21X) and measures the voltage drop due to the sensor
resistance. The thermistor resistance changes with temperature. The
instruction calculates the ratio of voltage measured to excitation voltage
(Vs/Vx) which is related to resistance, as shown below:
Vs/Vx = 1000/(Rs+249000+1000)
where Rs is the resistance of the thermistor.
See the measurement section of the datalogger manual for more information on
bridge measurements.
Temperature is calculated using a fifth order polynomial equation correlating
Vs/Vx with temperature. The polynomial coefficients are given in Table 10-2.
The polynomial input is (Vs/Vx)
*
800. Resistance and datalogger output at
several temperatures are shown in Table 10-1.
18
Zobrazit stránku 23
1 2 ... 19 20 21 22 23 24 25 26 27 28 29 30

Komentáře k této Příručce

Žádné komentáře

Muvit MUSLI0537 manuals

Owner’s manuals and user’s guides for Mobile phone cases Muvit MUSLI0537.
We providing 1 pdf manuals Muvit MUSLI0537 for download free by document types: Datasheet


Muvit MUSLI0537 Datasheet (1 pages)


Brand: Muvit | Category: Mobile phone cases | Size: 0.06 MB |

 

Table of contents





More products and manuals for Mobile phone cases Muvit

Models Document Type
MUCUN0280 Datasheet   Muvit MUCUN0280 mobile phone case, 1 pages
MUSLI0525 Datasheet   Muvit MUSLI0525 mobile phone case, 1 pages
MUCUN0284 Datasheet   Muvit MUCUN0284 mobile phone case, 1 pages
MUSLI0606 Datasheet   Muvit MUSLI0606 mobile phone case, 1 pages
SEBMC0039 Datasheet   Muvit SEBMC0039 mobile phone case, 1 pages
MUCUN0285 Datasheet   Muvit MUCUN0285 mobile phone case, 1 pages
MUSLI0465 Datasheet   Muvit MUSLI0465 mobile phone case, 1 pages
SESLI0086 Datasheet   Muvit SESLI0086 mobile phone case, 1 pages
MUCUN0281 Datasheet   Muvit MUCUN0281 mobile phone case, 1 pages
MUMAG0006 Datasheet   Muvit MUMAG0006 mobile phone case, 1 pages
MUCUN0232 Datasheet   Muvit MUCUN0232 mobile phone case, 1 pages
MUCUN0278 Datasheet   Muvit MUCUN0278 mobile phone case, 1 pages
MUSNS0072 Datasheet   Muvit MUSNS0072 mobile phone case, 1 pages
MUSNS0003 Datasheet   Muvit MUSNS0003 mobile phone case, 1 pages
MUCUN0227 Datasheet   Muvit MUCUN0227 mobile phone case, 1 pages
MUCUN0229 Datasheet   Muvit MUCUN0229 mobile phone case, 1 pages
MUSLI0542 Datasheet   Muvit MUSLI0542 mobile phone case, 1 pages
MUSLI0563 Datasheet   Muvit MUSLI0563 mobile phone case, 1 pages
MUSLI0303 Datasheet   Muvit MUSLI0303 mobile phone case, 1 pages
SEMAG0002 Datasheet   Muvit SEMAG0002 mobile phone case, 1 pages