Mettler Toledo GA42 Operations Instructions Page 37
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METTLER TOLEDO DE40/50/51 Density Meter 37
Concentration
Select "Conc." with the → key.
Confirm with <ENTER>.
You will select this option if you want to determine the concentration of two-component
solutions, e.g. aqueous solutions of glycerol or acetone. Ask your local representative for
available concentration tables or download them from our Internet Homepage:
www.density.com.
There are two ways to program a concentration function, either by entering this function
directly (provided that this function is already known) or by entering a concentration table
(data pairs of density and corresponding concentration).
First you have to select the unit for your concentration. This unit should be the same as that
of the solution used: the instrument does not convert units.
Select your "Conc.Unit" with the →
key. Confirm with <ENTER>.
Following units are available: No
unit, %, ppm,
mg/g, mg/mL, mg/L,
g/L, Eq/L, mol/L,
g/cm
3
.
Then you have to select the concentration formula. If your concentration function is known
already, select the same function. If your concentration function is not known (input of
concentration table) select the formula which best fits your concentration. As a rule of thumb
we recommend to select A+Bx+Cx
2
if you don't know which formula to select.
Case 1: Direct input of concentration function (known concentration function)
We will describe this function using an example: measurement of Apparent Extract in beer.
The function to convert density into Apparent Extract is:
Apparent Extract = -460.234 + 662.649 x d
20
20
- 202.414 x [d
20
20
]
2
The following steps have to be performed:
Select "%" as Conc.Unit with the →
key. Confirm with <ENTER>.
Select "A+Bx+Cxx" with the → key.
Confirm with <ENTER>.
Calculation parameters
Method 0 < Result >
Result :<Conc. >
Exit :[Execute]
Method 0 < Result >
Result : <Conc. >
Conc.Unit : <None >
Conc.Formula : <A+Bx >
Parameter Set : Table Coefficient
Data Replace : <x<-d-R >
Method 0 < Result >
Result : <Conc. >
Conc.Unit : <% >
Conc.Formula : <A+Bx+Cxx >
Parameter Set : Table Coefficient
Data Replace : <x<-d-R >
- Operating Instructions 1
- METTLER TOLEDO 1
- Contents Page 3
- Contents 4
- DE40/50/51 Density Meter 5 5
- 1. Introduction 6
- 2. Safety measures 7
- 3. The density 8
- End value 10
- 4. The instrument 12
- DE40/50/51 Density Meter 17 17
- The instrument 17
- 5. Getting started 18
- DE40/50/51 Density Meter 19 19
- Getting started 19
- Purge Checking 20
- DE40/50/51 Density Meter 21 21
- DE40/50/51 Density Meter 23 23
- Set Rinse-1 25
- Sample and sample file 26
- DE40/50/51 Density Meter 27 27
- Measuring 28
- DE40/50/51 Density Meter 29 29
- Measuring parameters 30
- DE40/50/51 Density Meter 31 31
- DE40/50/51 Density Meter 33 33
- DE40/50/51 Density Meter 35 35
- Calculation parameters 36
- DE40/50/51 Density Meter 37 37
- Result 38
- DE40/50/51 Density Meter 39 39
- DE40/50/51 Density Meter 41 41
- DE40/50/51 Density Meter 43 43
- Functions 43
- Recalculation 45
- DE40/50/51 Density Meter 47 47
- DE40/50/51 Density Meter 49 49
- DE40/50/51 Density Meter 51 51
- DE40/50/51 Density Meter 53 53
- DE40/50/51 Density Meter 55 55
- DE40/50/51 Density Meter 57 57
- °C (in equilibrium) 59
- Data Memory Card 60
- DE40/50/51 Density Meter 61 61
- DE40/50/51 Density Meter 63 63
- DE40/50/51 Density Meter 65 65
- DE40/50/51 Density Meter 67 67
- DE40/50/51 Density Meter 69 69
- CORRECTION, USER TABLES 70
- DE40/50/51 Density Meter 71 71
- Application Memory Card 71
- DE40/50/51 Density Meter 73 73
- DE40/50/51 Density Meter 75 75
- Special application cards 75
- Automatic sampling pump 78
- DE40/50/51 Density Meter 79 79
- DE40/50/51 Density Meter 81 81
- 16.1 Error Messages 82
- 16.2 Malfunction 82
- 17. Maintenance 84
- DE40/50/51 Density Meter 85 85
- DE40/50/51 Density Meter 87 87
- DE40/50/51 Density Meter 89 89
- Density tables 89
- Specifications 91
- Thank you 94
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