process in-tank

Introduction

for continuous and repeatable measurements

Density… Specific Gravity… API… METERSConcentration…

PROCESS IN-TANK

DC-40 series

Technical Note # 40x - 09 - 01V

LEMIS process DC-40 series processes liquid, LPG and LNG density also concentration meters are ideal for real-time, in situ monitoring and it controls applications within the oil, liquefied petroleum and natural gases, petrochemical, chemical, food and many other industries.

LEMIS process uses the proven vibrating element technique which is widely accepted as it enhances the most as one of the most accurate method of continuous online density measuring. LEMIS process engineers made new developments by introducing the unique proprietary design of the resonance tube sensor allowing accurate measurements to be taken in liquid. An integral high accuracy Pt-1000 probe continuously monitors liquid temperature allowing temperature compensation and future calculation of reference density, concentration or specific gravity. The technology proves high accuracy of measurement and long term calibration stability even in severe operation conditions. It is insensitive to plant vibration, high variation of temperatures, level, mix or turbulence. A choice of wetted parts materials: from stainless steel for general industrial use, Ni-Span-C for most demanding applications, and Hastelloy for applications where ultimate corrosion resistance is required. The received measurements (real

3density: g/cm , kg/m , lb/gal, lbm/ft) are instantly converted to relative density (specific gravity): 15°C, 20°C, 60°F; API; % Alcohol; °Brix; °Baumé.

3


Three types of installation are available: D-type, F-type and R-type

D-type R-typeF-type

The sensor can be immersed into a deep tank up to 30 meters on a flexible cord.

The sensor is installed vertically into a tank with depth up to 6 meters. Length of the stainless steel connecting stem is customized.

The sensor can be installed into a tank using different types of i ns ta l l a t i on : d i rec t insertion, top, bottom or side mounting. Large cho ice o f p rocess connection flanges is available.


Density, temperature and concentration monitoring in storage tanks

Petroleum products, fuels, lubricants, LPG, LNG

Concentrations of acids or corrosive chemical

Food, Dairy & Beverages

Product identification and consistency

Concentration and dilution measurement

Monitoring of reaction end in reactors

In-tank mixing and blending

APPLICATIONS

DEVICE DIMENSIONS (in mm)

pic.1

6418

2

±0,1

112

45

95 97

87

758-

6,5

,32-

0,26

")

(1,77")

(2,52")

(7,1

7")

(4,4

1")

(3,4

3")

(2,95")(0

(3,82")(3,74")


INSTALLATION

DEVICE DIMENSIONS (in mm)

pic.3

pic.2L

en

gth

H

45

22

5(8

,86")(1,77")

Len

gth

H

20

120,65

4

-

R76

145

90

21,30

124,5

01

15

45

170

(5,71")

(0,79")

(6,6

9")

(2,9

9")

(4,75")

(3,54")

(0,84")

(4,9

0")

(1,77")

(4,5

3")

DC-40x D-type standard 60° angle installation DC-40x R, F-types standard vertical installation


INSTALLATION

DC-40x F-types vertical insertion

Measuring zone diameter is 10 cm

DC-40x D-type 60° angle mounting

DC-40x R-type vertical insertion

DC-40x R-type vertical insertion


ADVANTAGES

Continuous, online density monitoring at process conditions

Accurately measures density of liquids with dynamic viscosity up to 1200 cP

Rigorous factory calibration and testing of the transducer

Can operate in pressurized tanks

Immersion in the tanks up to 30 meters

No moving parts, virtually maintetance-free system

Calibration of LEMIS process density meters are performed in-house according ISO9001:2000 quality assurance program and by using calibration materials that are traceable to national standards. In-house calibration and testing is performed specified dedicated calibration protocol for every standard model of the sensor. For most applications, on-site calibration is generally not required. LEMIS process sensors allows simple, switch-and-go field installation.

CALIBRATION

The operating principle of DC-40 is resonant method (vibration element) of measurement. It is based on the changing of frequency characteristics of the sensitive unit and resistance of the built-in temperature sensor in dependence of characteristics of the measured liquid. The oscillation period of the sensitive unit is mainly depends on density and temperature of the measured liquid. Density and temperature graduated coefficients are determined in results of calibration by the standard liquids at definite temperature and stored in the EEPROM.

PRINCIPLE OF OPERATION

We also can tune system specification for your specific requirements

Hazardous area approvals Insensitive to liquid level, mix or turbulence

Large offer of standard product configurations and installation available


SPECIFICATIONS

Density operating range 0 to 2 g/cm3 (0 to 2000 kg/m

3)

Accuracy ±0.00025 g/cm3 (±0.25 kg/m

3)

Repeatability ±0.0001 g/cm3 (±0.1 kg/m

3)

Calibration stability (per year) < ±0.0001 g/cm3 (< ±0.1 kg/m

3)

Viscosity Effect Automatically compensated Temperature Effect 0.005 kg/m

3/°C automatically compensated

Pressure Effect Negligible Max liquid dynamic viscosity Up to 1200 cP Temperature Measurement Built-in high accuracy 4-wire PT-1000 DIN 43760 Class A Process Temperature Range -200°C to +200°C (-328°F to +392°F)

Installation types Direct insertion (D-type), Long rigid immersion (R-type) or flexible (F-type)

Process Connections Large selection of flanges available

Maximum Operating Pressure 100 bars max for standard installation or flange rating for another installation

Ambient Temperature Range -40°C to +85°C (-40°F to +185°F) Weather Rating IP68 for sensor and IP55 for Terminal box Sensor Stainless steel 316L; Ni-Span C; Hastelloy C22 Other Wetted Parts Stainless steel 316L or Hastelloy C22 Case finish Stainless steel 316L Electronics Housing Aluminum, blue epoxy finish Electrical Connections Screw terminals; Cable entry: 2 x 3/4 “ NPT Sensor Power Supply 6 - 12 VDC 30 mA (60 mA pick) Sensor output Line density and temperature digital signals

Analog output Up to 3 x isolated 4 - 20 mA, direct or reverse-acting, configurable, customized

Digital output User choice of signals and protocols: RS485; RS232; Modbus; etc… Quality Assurance ISO 9001:2000 Factory Calibration Calibration certificates supplied as standard CE mark Compliant EN 61326 ; EN5011 ; EN 50082-2 Hazardous area ATEX II 1/2G Ex ia IIB T4 ; IEC Ex ia IIB T4 Ga /Gb ; CCE certificate Material Traceability Optional certification available


Ordering procedureTo simplify product ordering LEMIS process is offering large choice of standard products with pre-defined configurations that fit most typical industrial applications. If you have specific requirements over the standard list, we can tune system specification for your specific needs.

_______________________________________________________________________

As the result Full Code Number

Model codeFactory calibrated

range, g/cc

Sensor

material

DC400 0.6 - 1.2

DC401 0.6 - 1.2

DC402 0.6 - 1.2

DC403 0.6 - 1.2

DC404 0.6 - 1.2

DC405 0.6 - 1.2

DC406 0.4 - 0.7

DC407 0.6 - 1.2

DC408 0.9 - 1.6 Hastelloy C22

DC409 Customized Customized

Temperature range

code

Sensor

material

T1 SS 316L

T2 N-Span-C

T3 N-Span-C

X Customized

Installation pack

code

D

R

L

R-type

1 0.25

2 0.50

3 1

4 1.5

5 2

6 3

7 4

8 6

9 User

Process

connection code

Process

connectionAvailable for:

A6 2" ANSI 150 RF D. or R.




Max dynamic viscosity, cP

50

200

700

50

200

700

50

±0.00025

±0.0005

Up to 0.0001

200

50

Customized

F-typeLength code

Long rigid mounting (R-type)

Long flexible mounting (F-type)

Length H, m

1

30

20

15

10

3

7

5

User

Temperature range, °C

-10… +85

-40… +85

-10… +150

Customized

Installation pack

Direct insertion mounting (D-type)

Accuracy - in all range, g/cc

±0.001

±0.001

±0.001

±0.0005

±0.0005

±0.0005

±0.0005


Ordering procedure

For example:

DC400.T1.R3.A6.A1.D1, that means:

DC400. - density meter with factory calibrated range 0.6 - 1.2 g/cc (accuracy 1 g/cc; max dynamic viscosity 50 cP).

R3. - R-type density meter with length H 1 m.

A6. - density meter with process connection

RF.

A1. - density meter with data output .

D1. - density meter with Dot LED remote display.

±0.00

2" ANSI 150

RS-485

T1. - density meter with process temperature range -10... +85 °C and sensor material SS 316L.

_________________________________________________________________________

As the result Full Code Number

Process connection

code

Available

for:

D7 D. or R.

D8 D. or R.

D9 D. or R.

D10 D. or R.

C6 D. or R.

C7 D. or R.

C8 D. or R.

S D

LB D

X D or R or L

Data output codeA1

A2

B1

B2

B3

B4

B5

B6

C1

C2

C3

C4

C5

C6

X

Remote display

code

Remote

display

D1 Dot LED

D2 Ex field

D3IP65 (not Ex

proved) field

D4 No display

X Customized

1.5" Cone seat compression fitting

75 mm LB 8

Customized

4-20 mА - 3 channels

4-20 mА - 3 channels EX

Customized

Data outputRS-485

RS-485 EX

4-20 mА - 1 channel

4-20 mА - 1 channel EX

4-20 mА - 2 channels

4-20 mА - 2 channels EX

RS-485 + 4-20 mА - 2 channel

RS-485 + 4-20 mА - 2 channel EX

RS-485 + 4-20 mА - 3 channel


RS-485 + 4-20 mА - 1 channel


COUPLING 2 inch TRI-CLAMP

COUPLING 50 mm ISO 2853

COUPLING 50 mm DIN 11851

50 mm DIN 2527 RF DN 50/PN10

50 mm DIN 2527 RF DN 50/PN16

50 mm DIN 2527 RF DN 50/PN25

50 mm DIN 2527 RF DN 50/PN40

Process connection


Ordering procedure

This table corresponds ONLY to signal output 4-20 mA! It is required to fill in if 4-20 mA output has chosen. For each 4-20 mA channel must produce parameters that should be displayed. Do not forget to specify measuring range!

After you specified all required parameters the order note is following (for example):

Data ouput code C3 (two 4-20 mA channels).1 channel: density range 4 mA= 800 kg/m³, 20 mA= 950 kg/m³;2 channel: calculated units range D15 4 mA= 820, 20 mA= 970.

4 mA=_______(value) • kg/m³ 20 mA=_______(value) • g/cc

• lb/ft³

• lb/gal

• other, please specify units __________ 4 mA=_______(value) • °C20 mA=_______(value) • °F 4 mA=_______(value) • mPa·s20 mA=_______(value) • cP

• other, please specify units __________ 4 mA=_______(value) • D1520 mA=_______(value) • D20

• API

• SG

• other, please specify units __________

Calculated

units range

4-20 mA output

parameters:

Density

range

Temperature

range

Dynamic

viscosity

range

process in-tank

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