Mettler Toledo GA42 Operations Instructions Page 75
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METTLER TOLEDO DE40/50/51 Density Meter 75
Special application cards
14. Description of the special applications:
BRIX, ALCOHOL, API, VISCOSITY CORRECTION, COKE, USER
TABLES
The standard software of the DE40/50/51 can be expanded by various software options
(METTLER TOLEDO Service) that are available on Memory Card. This allows you to match
the selection of the method parameters to your requirements.
14.1 API software
The density of crude oils, oil products or lubricants must in some cases be measured at
elevated temperatures owing to their viscosity. With this software, stored tabulated values
are used for the automatic conversion of this density to that at 15 °C or 60 °F, depending on
the temperature unit you measure with. The tabulated values are based on API standard
2540 (API: American Petroleum Institute).
Under the parameters of the temperature compensation, select the required oil table (see
Section 9.2 and 14.4).
Oil table 1: the density of crude oils is converted to the reference temperature of 15° C
(or 60° F) according to table 53A of the API standard.
Oil table 2: the density of oil products is converted to the reference temperature of
15° C (or 60° F) according to table 53B of the API standard.
Oil table 3: the density of lubricants is converted to the reference temperature of
15° C (or 60° F) according to table 53D of the API standard.
To calculate the "API degrees", enter "((1/d) – 1)
*
141.5 + 10" as concentration function (see
Section 9.2 and 14.6).
14.2 Alcohol software
With this software the measured density of an alcoholic solution can be converted to the
corresponding volume concentration of Ethanol in water i.e. %
v
/
v
. Two different conversion
tables exist for this conversion, depending on the physical unit the temperature is measured
(and the reference temperature):
14.2.1 Temperature measured in °F, with a reference temperature at 60 °F:
This option is activated by selecting the temperature unit °F (see Section 11.6). The stored
values are based on table 3 of NBS Circular 19 (NBS: National Bureau of Standards, since
1988: National Institute of Standards and Technology). You must perform your
measurements at 60 °F to obtain the correct ethanol content.
- 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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