Mettler Toledo GA42 Operations Instructions Page 6
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6 METTLER TOLEDO DE40/50/51 Density Meter
1. Introduction
The DE40 and DE50/DE51 Density Meters measure the density d of gases, liquids and
solutions using the oscillating body method. They are distinguished by their temperature
range and their measurement accuracy. All three instruments:
• come with five certified water standards.
• measure gases, liquids and solutions with densities (d) in the range 0 to 3 g/cm
3
.
(DE40: with 0.0001 g/cm
3
; DE50/DE51: with 0.00001 g/cm
3
).
• need a minimum amount of substance (1.2 millilitres) for measurement.
• keep the temperature of the sample being measured constant thanks to a built-in thermostat
control (DE40: between 4 and 90 °C, DE50/DE51: between 4 and 70 °C).
• have 10 methods stored in their memory, which you can change to suit your measurements.
• show the density relative to water (specific gravity) at 4 °C (d
t
4
) or at the measurement
temperature (d
t
t
).
• calculate the concentration of a solution using tables or entered data of measured standard
solutions.
• calculate the density of a solution for a desired temperature using an entered temperature
function.
• have a built-in check function that allows to periodically check the accuracy of the instrument
without changing the instrument settings.
• store a maximum of 100 measured values.
• perform statistical evaluations (mean value, standard deviation, relative standard deviation)
and allow the recalculation of results.
• use Memory Cards for data storage, sample files and method transfer.
Special Application Memory Cards are available for all three instruments which allow the
automatic conversion of the experimental data into BRIX degrees, or alcohol concentration.
A special API software converts the density of oil products measured at elevated
temperatures automatically into the density at 15 °C (or 60 °F).
You can use an automatic sampling unit to perform continuous measurements; the built-in
RS-232C interface allows attachment of a computer to transfer experimental data. Print out
the entered parameters and data as well as results on a printer (option).
You can connect your instrument to a RE40 or RE50 refractometer to perform simultaneous
measurements of density and refractive index with one sample.
Connection of a SC24 sample changer allows fully automated measurements, even in
combination with a refractometer (RE40 or RE50).
Note: Examples of the density given in these Operating Instructions are for the DE50/DE51.
Introduction
- 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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