Densi-H
CAL
Densi-H
Handheld Density/Specific Gravity Meter
Operator’s Manual
Revision 2.0, February 5, 2016
30312854
Table of Contents
1 Introduction
3
2 Safety information
3
2.1 Definitions of signal words and warning symbols 3
2.2 Product specific safety notes 3
3 Description of the instrument
6
3.1 Overview 6
3.2 Display 7
3.3 Keys 7
4 Tutorial
8
4.1 Inserting batteries 8
4.2 Configuration 9
4.3 Test measurement 10
4.4 Adjustment 10
4.5 Cleaning 11
4.6 Switching off and on 11
5 Menu (menu)
11
5.1 Using the menu 11
5.2 Measurement Unit (Measure Unit) 12
5.3 Temperature Unit (Temp. Unit) 15
5.4 Measure Mode 15
5.5 Adjustment Mode (Calib. Mode) 16
5.6 Interface 16
5.7 Beep 16
5.8 Background Lightning and LCD-Contrast (LCD) 17
5.9 Automatic Switch-off (Power) 17
5.10 Software Version (Version No.) 17
5.11 Date and Time (Date&Time) 17
5.12 Identification 17
6 Measurement (meas)
17
6.1 Procedure for proper measurement 17
6.2 Filling the measuring cell using the built-in sample pump 18
6.3 Filling the measuring cell using an external syringe 18
6.4 Measuring 19
6.5 Saving the results 19
6.6 Displaying and marking saved results 20
6.7 Printing and transferring results 20
6.8 Deleting results 21
7 Adjustment (cal)
21
7.1 Adjusting the measuring cell with water 22
7.2 Adjusting the measuring cell with a density standard 22
7.3 Adjusting the measuring cell with air 23
7.4 Adjusting the temperature display 24
8 Interface
25
8.1 RS-P26 printer settings 25
8.2 Data transfer to PC 25
8.3 Data format 25
Densi-H 1Revision 2.0, February 5, 2016
9 Error messages and malfunctions
26
10 Cleaning and maintenance
27
10.1 Cleaning the measuring cell 27
10.2 Cleaning the housing 27
10.3 Replacing the sample tube 28
10.4 Replacing the sample pump 28
11 Standard and optional equipment
28
11.1 Standard equipment 28
11.2 Optional equipment 29
12 Technical data
30
13 Appendix
32
13.1 Density of pure water (0…40 °C) 32
13.2 Temperature-compensation coefficients α 32
Index
35
Densi-H2 Revision 2.0, February 5, 2016
1 Introduction
The CANNON Densi-H is a portable measuring instrument suited for
determining the density of liquids. The instrument uses the oscillating body
method. To fill the measuring cell the built-in sample pump or a syringe
may be used. The results are automatically calculated into one of the
following units: density, specific gravity, API degrees, Brix, % Alcohol, %
H2SO4, °Baumé, °Plato, Proof or a user-defined unit. The value is then
shown on the backlit display. For exact measurements, it is imperative to
correct the temperature’s influence on the density. Depending on the
selected unit the Densi-H carries out this result correction automatically.
For this task, the instrument uses either internally- stored tables or one of
the 10 temperature-compensation coefficients entered by the user.
The results, along with the sample identification, temperature, temperaturecoefficient, date and time can be saved. Together with the instrument
identification they can then, via the integrated infrared interface, be
transferred to the computer or printed out on a printer.
2 Safety information
• Read and understand the instructions in this manual before you use
the instrument.
• Keep this manual for future reference.
• Include this manual if you pass on the instrument to other parties.
If the instrument is not used according to the instructions in this manual or
if it is modified, the safety of the instrument may be impaired and CANNON
Instrument Company® assumes no liability.
2.1 Definitions of signal words and warning symbols
Safety notes are marked with signal words and warning symbols. These
show safety issues and warnings. Ignoring the safety notes may lead to
personal injury, damage to the instrument, malfunctions and false results.
WARNING
for a hazardous situation with medium risk, possibly resulting
in severe injuries or death if not avoided.
CAUTION
for a hazardous situation with low risk, resulting in minor or
medium injuries if not avoided.
NOTICE
for a hazardous situation with low risk, resulting in damage to
the device or the property or in loss of data.
Note
(no symbol)
for useful information about the product.
Warning symbols
Harmful
substance
Acid / Corrosion
2.2 Product specific safety notes
The instrument has been tested for the experiments and intended purposes
documented in the appropriate manual. However, this does not absolve
you from the responsibility of performing your own tests of the products
supplied by us regarding their suitability for the methods and purposes
you intend to use them for.
Densi-H 3Revision 2.0, February 5, 2016
Intended use
The measuring instrument is intended for performing measurements for
determining the density of liquids.
Any other type of use and operation beyond the limits of technical specifications without written consent from CANNON Instrument Company®, is
considered as not intended.
Staff qualification
Incorrect use of the instrument or the chemicals used in the analysis can
lead to death or injury. The following qualifications are needed for
operating the instrument.
• Knowledge and experience in working with toxic and caustic
substances.
• Knowledge and experience in working with standard laboratory
equipment.
• Knowledge and experience in working in accordance with general lab
safety rules.
Protective Clothing
Wear protective clothing in the laboratory when working with hazardous or
toxic substances.
Wear suitable eye protection such as goggles.
Use appropriate gloves when handling chemicals or hazardous
substances and check their integrity before use.
Wear a lab coat.
Safety notes
WARNING
Danger of injuries and death due to harmful substances!
Chemicals can cause injuries if they come in contact with
bare skin or are inhaled.
1 When using chemicals and solvents, comply with the
instructions of the producer and the general lab safety
rules.
2 Set up the instrument in a well-ventilated location.
3 Clean any spills immediately.
4 If you measure substances which form toxic gases,
place the instrument in a fume hood.
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WARNING
Risk of chemical burns from acids and alkalis!
The contact with acids and alkalis can cause severe
Poisoning, burns, skin irritation and cause eye damage.
1 Observe and comply the Specifications of the material
safety data sheets of the used testing medium.
2 When working with acids and alkalis always wear
protective clothing, chemical protective gloves und
protective goggles.
3 Do not breathe and swallow acids and alkalis.
4 Avoid skin contact with acids and alkalis.
5 Rinse eye immediately with clear water after eye contact.
Seek immediate medical help.
NOTICE
Danger of material damage due to non-intended use of
the device!
Non-intended use can damage the device.
1 Never press on the measuring cell window. This can
influence the oscillation characteristics of the measuring
cell.
2 Do not clean the measuring cell with concentrated NaOH
(causic soda) or HF (hydrogen fluoride). Both
substances chemically corrode the measuring cell.
3 Use batteries of the specified type only. Otherwise,
proper operation cannot be guaranteed.
4 Do not submerge the housing in liquid. The instrument
is only resistant to splashed water.
Site requirements
The instrument has been developed for operation in a well-ventilated area.
Avoid the following environmental influences:
• Conditions outside of the ambient conditions specified in the technical
data
• Powerful vibrations
• Direct sunlight
• high humidity present
• Corrosive gas atmosphere
• Explosive atmosphere of gases, steam, fog, dust and flammable dust
• Powerful electric or magnetic fields
• only ambient temperatures between -20 °C and 70 °C
Densi-H 5Revision 2.0, February 5, 2016
3 Description of the instrument
3.1 Overview
1
2
3
5
6
7
8
12 1113
10
4
9
Densi-H
CAL
1 Backlit Display
2 Keypad
3 Drain button
4 Sample pump
5 Cover of sample pump
6 Connector for syringe adapter
7 Fixing screw for sample tube
8 Sample tube
9 Measuring cell
10 Infrared interface
11 Lock button
12 Fill button
13 Battery compartment cover
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3.2 Display
1 2 3 4
5 6 7 8 9 10
11
(20)
(20)
1 Selected unit of measurement
2 Result
3 Sample identification (a…z or space)
4 Sample number, or error number if an error has occurred
5
Appears if Stability is set to Auto
6
Appears if Memory in is set to Auto
7
Appears if Memory out is set to Auto. If a printer or PC is connected,
the data are transferred automatically
8 Battery-power indicator
9 Temperature (°C / °F)
10 Appears if delete mode is activated
11 Mark for results
For the identification of invalid or incorrect results or for marking a
sample change
Δ
Reference temperature (for the units Comp. Density and SG only)
3.3 Keys
3
1
2
4
5
6
Red symbols:
Press key longer than 2 seconds.
Blue symbols:
Press key briefly.
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No. Symbol Short key-press Long key-press
1 • Move marker to the left
• Mark saved results
• Delete saved results
2 • Move marker upward
• Select sample number
(ascends)
• Switch between Yes and
No setting
• Select temperature-
compensation
coefficient α
3 • Move marker to the right
• Display saved results
• Transfer one saved
result to a printer/PC
• Transfer a series of
saved results to a
printer/PC
4 • Move marker downward
• Select sample number
(descends)
• Switch between Yes and
No setting
• Call up adjustment
mode
5
esc
• Exit the menu • Switch instrument on or
off
6
ok/meas.
• Start measurement
• Confirm input
• Confirm data delete
• Confirm data transfer
• While pressing and
holding key 5: enter the
menu
Only the arrow symbols are used to represent keys 1 – 4 in the
following operating instructions.
4 Tutorial
4.1 Inserting batteries
1 Open the battery compartment cover on the back of the Densi-H.
2 Remove battery compartment.
3 Insert batteries into the battery compartment, observing correct polarity.
4 Insert battery compartment, ensuring that the contacts of the battery
compartment face the instrument.
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5 Close battery compartment cover.
ð The instrument switches on automatically and is immediately ready for
operation. With the backlighting switched off the battery lasts about 90
hours.
Note
§ If nothing appears in the display.
− Check polarity of the batteries and battery compartment.
4.2 Configuration
Configuring the instrument for test measurement.
Entering the menu
− Press the keys ok and esc simultaneously.
ð The instrument switches to the FUNCTION menu. Measure Unit
appears in reverse display (white on black).
Selecting setting
1 Press the ok key.
ð The Measure Unit menu is confirmed.
2 Press the key repeatedly until SG (t/t) is marked.
3 Press the ok key.
ð SG (t/t) is confirmed.
Setting date and time
1 Press the key repeatedly until Date&Time is marked.
2 Press the ok key.
ð The Date&Time menu is confirmed.
Date is marked.
3 Press the ok key.
4 Use the side arrows to select the number to change, and use the up
and down arrows to change the value.
5 Press the ok key.
ð The Date is set.
6 Use the key to switch to Time and confirm with ok.
7 Set the time as described above.
ð The Time is set.
Exiting the menu
− Press the esc key.
ð The instrument is configured for test measurement.
Densi-H 9Revision 2.0, February 5, 2016
4.3 Test measurement
12
3
1 Push drain button (3) downward completely.
2 Ensure that the sample tube is located in the accompanying density
standard or in distilled water.
3 Press the fill button (12) slowly to fill the measuring cell.
4 Ensure that no air bubbles are contained within the measuring cell.
5 Press the meas. key.
ð The instrument automatically executes a measurement and the result
appears in reverse display.
The result for water must be 1.000 in the selected measurement unit
SG (t/t).
Note
§ If the deviation is ≤ 0.0005
− Adjustment is ok, the instrument is ready for measurement.
§ If the deviation is > 0.0005
− Adjust instrument, see [Adjustment}10].
4.4 Adjustment
Note
You must be in the "expert" mode to perform a water calibration
1 Press and hold the key until CALIB (Water) appears on the display.
ð The instrument adjusts automatically (duration: approx. 1 minute).
After adjustment is completed, the measured deviation from the
theoretical value and Execute? ( No ) appears.
2 Press the or key.
ð Execute? ( Yes ) appears.
3 Press the ok key.
ð The adjustment is confirmed.
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4.5 Cleaning
§ Clean the measuring cell daily with a suitable cleaning liquid. The
built-in sample pump or an external syringe can be used to fill the
measuring cell with cleaning liquid.
1 Press the drain button downward completely to empty the measuring
cell.
2 Press the fill button to fill the measuring cell with cleaning liquid.
3 For very dirty measuring cells, let the inside of the cell soak in the
cleaning liquid.
4 Repeat cleaning if necessary.
5 If the housing is soiled, clean with a cleaning tissue.
4.6 Switching off and on
Switching Off
− Press and hold the esc key until the display is turned off.
ð The instrument is now turned off.
Switching On
− Press and hold the esc key until the display appears.
ð The instrument is ready for operation.
5 Menu (menu)
The menu of the Densi-H offers the following functions:
• [Measurement Unit (Measure Unit)}12]
• [Temperature Unit (Temp. Unit)}15]
• [Measure Mode}15]
• [Adjustment Mode (Calib. Mode)}16]
• [Interface}16]
• [Beep}16]
• [Background Lightning and LCD-Contrast (LCD)}17]
• [Automatic Switch-off (Power)}17]
• [Software Version (Version No.)}17]
• [Date and Time (Date&Time)}17]
• [Identification}17]
5.1 Using the menu
Entering the menu
− Press the keys ok and esc simultaneously.
ð The instrument switches to the menu.
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Selecting functions
1 Press the and keys repeatedly until the desired function is
marked.
2 Press the ok key to activate the marked function.
ð The instrument switches to the corresponding submenu or activates the
desired function.
Numerical input
1 Use the and keys to select the decimal places.
2 Use the and keys to change the value.
3 Press the ok key to confirm the value.
Exiting the menu
− Press the esc key.
5.2 Measurement Unit (Measure Unit)
The following units are available for selection:
Density
Available density units:
g/cm3
lb/gal (US)
1 g/cm³ = 8.3454 lb/gal
lb/gal (IP)
1 g/cm³ = 10.0224 lb/gal
Comp. Density (Temperature-compensated density)
Density measurement in g/cm3 at a reference temperature.
All results at the same reference temperature (T0 , e.g. 20 °C), regardless
of the measuring temperature (T).
Compensated density = measured density * (1 + α * (T – T0))
10 temperature-compensation coefficients can be saved.
The following input is required:
Comp. No.
Number of the temperature-compensation coefficient
(0…9)
Comp. Temp.
Reference temperature (T0)
a*1000
Temperature-compensation coefficient
For typical temperature-compensation coefficients see [Temperaturecompensation coefficients α}32] and for calculation of α see
[Measurement Unit (Measure Unit)}14].
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