LEMIS DM-250.1 Series User manual

PORTABLE DENSITY METER
DM-250.1
Owner’s Manual
September 2016
Version_V1

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CONTENTS
1. APPLICATION .............................................................................................................. 3
2. STANDARD COMPLETE.............................................................................................. 3
3. SPECIFICATIONS ........................................................................................................ 4
4. WARNINGS & OPERATOR SAFETY ........................................................................... 5
4.1. Special condition for safe use in hazardous area................................................... 5
5. CONSTRUCTION and OPERATING PRINCIPLE........................................................ 6
5.1. Control panel and Display ...................................................................................... 7
6. MENU............................................................................................................................8
7. SETTINGS .................................................................................................................... 9
7.1. “MEASURE” – selection of density measuring mode ........................................... 11
7.2. “TABLE” - Product Type setting ......................................................................... 11
7.3. “FORMAT” of Real and Relative Density Readings ............................................. 12
7.4. “DENSITY” Units setting ...................................................................................... 13
7.5. “TEMPERATURE” Units setting ........................................................................... 13
7.6. Bright – characters brightness setiing ................................................................. 13
7.7. “DATE” setting...................................................................................................... 14
7.8. “TIME” setting...................................................................................................... 15
7.9. “SHUTDOWN” setting ......................................................................................... 16
7.10. “BEEPER” setting................................................................................................ 16
7.11. “PASSWORD” setting .......................................................................................... 16
7.12. “TECH.CALIB” – device technical calibration mode ............................................. 17
7.13. “DEVICE INFO”.................................................................................................... 18
7.14. “BLUETOOTH PIN” setting .................................................................................. 19
7.15. “BLUETOOTH” ON / OFF setting......................................................................... 20
8. “PRINTER” setting....................................................................................................... 20
9. “CALIB” setting............................................................................................................ 23
10. OPERATING MODE ................................................................................................... 23
10.1. Preparations......................................................................................................... 23
10.2. Measuring Mode .................................................................................................. 24
10.3. Data Storage ........................................................................................................ 26
10.4. After Operation..................................................................................................... 27
11. OPERATIONS WITH SAVED DATA ........................................................................... 27
11.1. VIEW / Saved Data Browsing.............................................................................. 27
11.2. CLEAR / Saved Data Deleting ............................................................................. 28
11.3. Saved Data Printing ............................................................................................. 29
12. SERVICING ................................................................................................................ 30
12.1. After Use .............................................................................................................. 30
12.2. Cleaning............................................................................................................... 30
13. BATTERY.................................................................................................................... 31
13.1. Battery State Review............................................................................................ 31
13.2. Battery Charging .................................................................................................. 31
14. Testing ........................................................................................................................ 33
14.1. Calibration............................................................................................................ 33
15. STORAGE and TRANSPORTATION.......................................................................... 33
Appendix 1. The Density of Distilled Water with the Testing Temperature (Tt0) ................. 34
Appendix 2. Available troubles and trouble-shooting procedures....................................... 35

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1. APPLICATION
The portable density meters DM-250.1 series (hereinafter: DM-250.1 or device)
are designed for density measurements of any pure liquids directly in tanks,
without sampling, at the depth up to 12 meters. The device allows readings of
relative density and volume concentration of alcohol in water solutions.
It may be used for qualitative and quantitative control of petroleum products in the
process of production, refining, transportation, storing and trading of petroleum
products.
The DM-250.1 has waterproof construction with enclosure IP67.
2. STANDARD COMPLETE
 Density meter (consist from display unit (hereinafter: “device”), which is
fastened on holder with connected density and temperature sensor by cable
spooled on holder.
 Charging device;
 Belt;
 Carrying case;
 Manual;
Accessories :
 Software: under WINDOWS.

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3. SPECIFICATIONS
PERFORMANCES PARAMETERS
Measuring ranges
 Density, g/сm3(kg/m3)
 Temperature, С
0,6...1,1 (600 …1100)
-30...+50
Accuracy
 Density, g/сm3(kg/m3)
 Temperature, С
0.0003 (0.3) or 0.0005 (0.5)
0.2
Resolution
 Density, g/сm3(kg/m3)
 Temperature, С
0.0001 (0.1)
0.1
Depth of imbedding of the
sensor, M
Depends from cable length
Battery NiMH-accumulator
3,6 Volts - 1500 mAh
Enclosure IP67
Safety::
 device
 sensor
II 2G (1G) Ex ib [ia] IIB T4 (Ga)
II 1G Ex ia IIB T4 Ga
Ambient temperature -40... +50 C
Dimensions
 density meter with sensor mm,
no more than
 sensor mm, no more than
208 х246 х139
45 х210
Weight
 density meter without sensor
kg, no more than
 sensor kg, no more than
1.3
0.9

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4. WARNINGS & OPERATOR SAFETY
 Make sure you have read this manual carefully before operating the device.
 Do not charge the battery or open the battery compartment in explosive zones!
 Do not operate the device with mechanical or electronic defects.
 The operator of the DM-250.1 must control good working order of the device
during its maintenance.
 The device may be refitted and dismantled only by manufacturer or authorized
distributor’s company.
 At all times use common sense.
 It is important that only suitably trained personnel operate this equipment, in
accordance with the instructions contained in this manual and with general
safety standards and procedure.
 If the equipment is used in a manner not specified by DM-250.1 the protection
provided by the equipment to the users might be impaired.
4.1. Special condition for safe use in hazardous area.
1. The equipment must only be charged and opened in a non-hazardous area.
2. Ambient temperature range: -30°C ≤Ta ≤+50°C
3. The Sensor DS 251 comprises light alloy parts. Therefore when it is used in
zone 0 it is necessary to avoid any impact or friction of sensors body

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5. CONSTRUCTION
*and OPERATING PRINCIPLE
Density meter DM-250.1 consist from device control panel with OLED display and
density and temperature sensor (hereinafter: sensor), which connected by cable.
Device is portable with dust and waterproof keyboard and display, built-in
Bluetooth for data transfer to external devices (printer or PC). The device is
explosion-proof and self-powered (with built-in rechargeable battery with
intrinsically safe circuits).
The sensor (pic.1) is made from
stainless steel. The operating principle
of the density sensor based on the
measuring of resonant oscillation
frequency of mechanical oscillating
system, which is wholly immersed into
the liquid.
This method allows measure real
density of liquid without extraction of
samples, at any depth.
Pic.1. Sensor
*The manufacturer reserves the right to make some changes in construction and software
of the device, which will not adversely affect to the quality of the device.

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5.1. Control panel and Display
Device control panel (pic.2) consist from 6 buttons and OLED (Organic Light
Emitting Diode) display.
Display (pic.3) show two lines with 12 characters each.
Рiс. 2. Device
– power switch ON/OFF
– 1) «cancel» current operation;
2) exit from current mode;
– “right” cursor key
– “up” cursor key
– “down” cursor key
– “Enter” Рiс. 3. Display

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6. MENU
 Switch ON the controller 
. When the power is switched on, a
copyright / version notice similar to the one below is displayed
DM-250.1
Density Meter
After 1 second the line “Density Meter” will be changed to info travelling
line “www.lemis-process.com”. To escape the travelling line - press
.
 The device begins testing:
Testing…
██∏∏∏∏∏∏
 If the sensor is not well connected or it is defected, the display shows:
Sensor
not detected
 If the clock must be reset display shows:
Year/Month/Date
2015/ Oct / 15
(See p.p. 7.7. and 7.8. to set date and time).
If it is all right – the operating modes menu will be displayed:
Measuring
Notes

:
Battery
Printers

:
Settings
Calib

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 To enter in menu – mark the required one by marker and press
 Example:

/ Notes /

. :
Notes: View
Clear
where: View – viewing of the stored data (see p. 11.1.);
Clear – stored data clearing (password requested if password is set)
(see p.11.2.);
 To enter in any above selection – mark the required one by marker and
press . To view stored data – mark “View” by marker , press
and then select searching way “By Date” or “By Number”. Searching stored
data by date should enter year, month and day; by number should enter
numbers of measurements (from… to…).
NOTE: to enter in MENU from the Notes Mode – press .
7. SETTINGS
Enter in MENU (see point 6)::
Printers
Settings

/ Settings /

:
Measure: Stabil
Table: Products

:
Format: D15
Density: kg/m3

:
Temperature: oC
Brightness: 4

:

10
Date: 25/Oct/13
Time: 15:04:33

:
Shutdown: Auto
Beeper: ON

:
Password
Tech.Calib

:
Device Info
Bluetooth: Pin

Bluetooth: ON
Where: Measure – selection of density measuring modes;
Table – selection of the liquid type for appropriate referred density calculation;
Format – setting of the required format of the referred density readings;
Density – setting of the density units;
Temperature – setting of the temperature units;
Brightness – display’s backlight brightness setting;
Date – date setting;
Time – time setting;
Shut down – ON / OFF setting;
Beeper – ON / OFF setting;
Password – setting of the password for enter in «Clear» mode;
Tech.Calib – enter to device technical calibration (access protected with
password)
Device Info – information about a copyright/version of the device.
Bluetooth PIN – PIN code for authorized PC connection;
Bluetooth – ON / OFF setting;
Mark the required selection with the marker and press .