Milltronics MCP01 S, MCP01 D, MCP03, MCP01 DD, MCP01 SD Instruction Manual

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MERCAP

Instruction Manual

June 2001

Safety Guideline s

Warning notices must be obser v ed to ensure personal safety as w ell as that of others, and to protect the product and the connected equipment. These warning notices are accompanied by a clarification of the level of caution to be observed .

Qualified Personnel

This device/system may only be set up and operated in conjunction with this manual. Qualified personn el ar e only authorized to install and operate this equipment in accordance with established safety practices and standards.

Warning: This product can only function properly and safely if it is correctly transported,

stored, installed, set up , operated, and maintained.

Note: Always use p r od uct in accordance with specifications.

Disclaimer of Liability

This document is available in bound version and in electronic version. We encourage users to purchase authorized bound manuals, or to view electronic versions as designed and authored by Siemens Milltronics Process Instruments Inc. Siemens Milltronics Process Instruments Inc. will not be responsible for t he contents of partial or whole reproductions of eit her bound or electronic versions.

MILLTRONICS®is a registered trademark of Siemens Milltronics Process Instrume nt s Inc.

Contact SMPI Technical Publications at the following address:

Technical Publicat ions Siemens Milltronics Process Instruments Inc. 1954 Technology Drive, P.O. Box 4225 Peterborough, Ontari o, Canada, K9J 7B1 Email: techpubs@millt ronics.com

While we have verified the contents of this manual for agreement w it h t h e instrumentation described, variations remain possible. Thus we cannot guarantee full agreement. The contents of this manual are regularly reviewed and corrections are included in subsequent editions. We w elcome all suggestions for improvement.

Technical data subject to change.

For the library of SMPI instr uction manuals, visit our Web site: www.milltronics.com

Table of Contents

Introduction

Introduction ................................

IntroductionIntroduction

Technical Specifications

Technical Specifications ................................

Technical SpecificationsTechnical Specifications

Electrodes and Process Connections

Electrodes and Process Connections ................................

Electrodes and Process ConnectionsElectrodes and Process Connections

................................................................

Identifications and Abbreviations ..............................................................................................3

................................................................

Electrodes.........................................................................................................................................5

Wetted Parts....................................................................................................................................5

Transmitter.......................................................................................................................................5

................................................................

Handling of Electrodes..................................................................................................................7

Characteristics ................................................................................................................................7

General Design Principles ...........................................................................................................8

Mercap Configurations.................................................................................................................9

Examples of Mercap Level Instruments ................................................................................10

Interface and Level Version (Mercap MCP 02)....................................................................15

Flanges ............................................................................................................................................17

Flange Standards .........................................................................................................................17

Applications Examples................................................................................................................19

....................................

................................................................

..............................................

................................................................

........................................................

................................................................

........................ 7777

................................................

.... 3333

........

.............. 5555

............................

Flow-Through Electrode

Flow-Through Electrode ................................

Flow-Through ElectrodeFlow-Through Electrode

................................................................

FTS Series ......................................................................................................................................21

FTF Series.......................................................................................................................................22

MST9500 Transmitter

MST9500 Transmitter ................................

MST9500 TransmitterMST9500 Transmitter

................................................................

Operating Principles ....................................................................................................................24

Installation

Installation and Interconnection

InstallationInstallation

and Interconnection................................

and Interconnectionand Interconnection

................................................................

Interconnection.............................................................................................................................26

Connection Diagrams..................................................................................................................27

Factory settings ............................................................................................................................29

Applications

Applications and Grounding

ApplicationsApplications

Start-up

Start-up ................................

Start-upStart-up

Maintenance

Maintenance ................................

MaintenanceMaintenance

and Grounding ................................

and Groundingand Grounding

................................................................

Push-Button Adjustment ............................................................................................................35

Adjustment using HART

................................................................

..........................................................................................................36

................................................................

Test function ..................................................................................................................................39

................................................................

..............................................

................................................................

..................................................

................................................................

................................ 25

................................................................

.......................................

................................................................

.........................................

................................................................

................................ 39

................................................................

.................. 24

....................................

.............. 21

............................

2121

2424

2525

....... 30

..............

3030

......... 35

..................

3535

3939

Appendix A: HART

Appendix A: HARTAppendix A: HART

HART HART

TMTM

Documentation

Documentation ................................

Documentation Documentation

info.....................................................................................................................................41

Conformance and Command Class .........................................................................41

MST9500 DD Menu/Variable Organization ..........................................................................43

HART

Response Code information.......................................................................................44

General transmitter information...............................................................................................44

7ML19981CM01.1 MERCAP – INSTRUCTION MANUAL Page 1

................................................................

........................................................

................................................................

........................ 41

................................................

4141

Additional universal command specifications .....................................................................45

Additional common-practice command specifications .....................................................45

Transmitter specific commands...............................................................................................47

Appendix B: Tables

Appendix B: TablesAppendix B: Tables

Table A Conversion......................................................................................................................54

................................

................................................................

.....................................................

................................................................

..................... 54

..........................................

5454

Table B Total Loop

Table C Voltage Drop Versus mA For Current Transmitter Operation....................................55

Appendix C: Approvals

Appendix C: Approvals................................

Appendix C: ApprovalsAppendix C: Approvals

CE Certificate .................................................................................................................................56

Certificates and Approvals ........................................................................................................57

Control Drawing FM/CSA Approval Mercap ........................................................................58

Index

Index ................................

IndexIndex

................................................................

Ω Versus Supply Volts..........................................................................55

................................................................

.................................................

................................................................

..............................................

................................................................

................. 56

..................................

.............. 59

............................

5656

5959

Page 2 MERCAP – INSTRUCTION MANUAL 7ML19981CM01.1

Introduction

The Mercap system is a high performance, level measurement instrument consisting of a sophisticated, easy-to-adjust, transmitter (MST9500) combined with measurement electrodes and process seals designed to accommodate numerous configurations. The electrode, comprised of a measurement section and an active shield section, is the primary sensor of the system, and it indicates the electrical capacitance value of the measurement section relative to the environment (tank wall, stilling well, or conductive material). This electrode then connects to the capacitance detector portion of the two-wire loop powered electronic transmitter. The measurement section can be set up to measure the level of solids, liquids and slurries, as well as the interface between two immiscible liquids.

The manual is presented in three sections:

1. The electrode process connections and seals

2. The transmitter

3. Appendix sections providing supplementary information.

Identifications and Abbreviations

Various mnemonics and abbreviations are used in this manual. See below:

Short form Long Form Description Units

CE /FM /CSA Conformitè Europèene/

Factory Mutual/Canadian

Standards Association DAC Digital Analog Converter DCS Distributed Control System Control Room apparatus Ex Explosion Proof Exd Flame Proof FV Full Vacuum ESD Electrostatic Discharge

HART

LRV Lower Range Value value for 0 % 4 mA LSL Lower Sensor Limit below which PV is incorrect pF pico Farads 0.000000000001 Farad ppm parts per million PV Primary Variable measured value Stilling Well grounded metal tube with

SV Secondary Variable equivalent value SVLRV Sec. Var. Lower Range Value 0 % equivalent value SVURV Sec. Var. Upper Range Value 100 % equivalent value µF URV Upper Range Value value for 100% 20 mA µSec USL Upper Sensor Limit above which PV is incorrect

Highway Addressable

Remote Transducer

openings

micro Farads 0.000001 Farad

micro Seconds 0.000001 Seconds

HARTTM Communication Foundation, Austin, Texas, USA

7ML19981CM01.1 MERCAP – INSTRUCTION MANUAL Page 3

Page 4 MERCAP – INSTRUCTION MANUAL 7ML19981CM01.1

Technical Specifications

Electrodes

Process connections

Screw mounting: Flange mounting:

Process material: C 22.8 N, AISI 316 L, Monel 400, Hastelloy C22

Probe diameter (mm/inch): 9/0.35 (cable), 16/0.63 (rod), or 24/0.95 (rod)

Probe length (mm/inch)

Rod version: Cable version:

Probe lining: PFA, Enamel, PTFE

NPT, BSPT, JIS. ANSI, DIN

5500/216 35000/1378

Pressure rating (bar/psi): FV - 200/2920 up to 525/7665 as option

Temperature rating (°C/°F): -200°/-328° to 200°/392° up to 450°/842° as option

Wetted Parts

Liner: PFA/PTFE

Flange: stainless steel or teflon lined

Transmitter

Measurement range (pF): 0 – 3300

Span (pF): minimum 3.3

Supply voltage (Vdc): • maximum 33

• minimum 12 Vdc at 3.6 mA

• minimum 9.5 Vdc at 22 mA

Output current (mA): 3.6 – 22 / 22 - 3.6 (2-wire current loop)

Smart communication: Acc. the HART Communication Foundation (HCF)

Temperature range (°C/°F): -40°/-40° to 85°/185° (ATEX–Explosion Proof: -20°/-4° to

7ML19981CM01.1 MERCAP – INSTRUCTION MANUAL Page 5

60º/140º)

Temperature stability:

0.15 pF (0pF) or <0.25% (typically <0.1%) of actual measurement value, whichever is greater over the full temperature range of the product.

Non linearity and

< 0.1% full scale and actual measurement respectively

reproducibility:

Accuracy: <0.1% of actual measurement value

Features: • polarity protection input circuit

• E.S.D. protected (Loop)

• galvanically isolated measurement circuit

• fully potted with epoxy resin

Diagnostics (Includes fault alarm):

• primary variable (PV) out of limits

• system failure measurement circuit

• deviation between A/D and D/A converter values

• check sum

• watch dog

• measurement current out of range

Measurement current

NAMUR NE 43

signalling:

Function rotary switch

Position 1: Position 2: Position 3:

4 mA measurement value (set) 20 mA measurement value (set)

3.8 up to 20.5 mA range by means of a field service programmer

Position 4:

functionality test

Approvals: • Cenelec, FM/CSA (IS), FM (Ex-proof), CE, ATEX

HART communication in all switch positions

Page 6 MERCAP – INSTRUCTION MANUAL 7ML19981CM01.1

Electrodes and Process Connections

This section of the manual is designed to assist in the determination of the best possible probe configuration for your application. Therefore, we discuss the electrodes and process connections before the instrumentation and the operation procedures. When configuring the unit to your application, use the sample configurations below as your criteria.

Mercap electrodes come in a variety of formats to provide the necessary characteristics for correct mounting, chemical compatibility, temperature and pressure requirements, and dielectric constant. Most applications use the simple threaded connection, which is directly mounted in the tank with the mating threaded nipple, or with a flange adapter that includes a threaded hole.

For applications requiring higher temperature and pressure, or greater integrity, welded and solid machined flange versions are available with single or double cone seals, and/or a second seal on the flange plate to avoid any metallic wetted parts.

Handling of Electrodes

WARNING: Do not scratch or gouge the PFA electrode insulation since this could

reduce the integrity of the insulation and the useful life of the electrode.

WARNING: Be careful with an enamel insulated electrode. Normally an enamel lining

is protected by a stilling well, which is part of the design.

WARNING: Do not damage the insulation jacket on the electrode during shipping,

packing, and installation. Most electrodes use PFA insulation, a very dense and reliable type of Teflon that prevents leakage and corrosion of the metal electrode and acts as an insulator when conductive materials are being measured. Any damage to the electrode can prevent proper performance.

WARNING (ATEX 100): Precautions MUST be taken to avoid ignition due to

hazardous electrostatic charges when an isolated probe is used in a potentially explosive atmosphere caused by gas, vapor, or a non-conductive liquid, requiring apparatus group IIC equipment. Or when the probe is used in a potentially explosive atmosphere caused by dust.

7ML19981CM01.1 MERCAP – INSTRUCTION MANUAL Page 7

Characteristics

The following characteristics apply to all general connection configurations:

• The standard Mercap insulated electrode is designed for use in both conducting and non-conducting liquid applications.

• All electrodes consist of an active shield portion and a measurement portion, which combine to form the complete electrode.

• The sum of the active shield length and the measurement length is the total insertion length.

• The active shield design provides continuous immunity to the known changes in conditions at the top of many vessels, where levels of vapours, dust, and condensation are constantly changing.

• All changes in capacitance due to temperature and pressure changes that could cause small changes in the seal geometry are also isolated from the measurement signal because they are not included in the starting capacitance of the electrode by virtue of the action of the active shield.

• Due to the well-controlled diameter of the electrodes and insulation, a linear output is achieved over a wide range of capacitance values (3.3 to 3300 pF).

• The end seal is formed as an integral part of the electrode lining, giving smooth and uniform insulation characteristics (tested to 55 kV).

• Standard single cone usage

• Secondary cone usage

General Design Principles

The Mercap capacitance level instrument combines an optimum combination of mechanical and electrical/electronic principles in its design. Combining a single transmitter with as few electrode configurations as possible maximizes the number of potential applications while it minimizes the complexity of the instrument.

In principal, the standard threaded process connection (S-Series) with PFA insulated electrode, including the active shield, provides good results in all measurement situations that are within the temperature, pressure, and corrosive capabilities of the materials and seals. This is true over a wide range of dielectric constants in both non-conducting and conducting materials.

Applications outside of the standard capabilities of the S-Series would require a different design configuration. These non-standard applications include:

Non-Standard Application Mercap Configuration

Non-metallic tanks with both conducting and non-conducting liquids. Non-conducting liquids in spherical and horizontal-cylindrical tanks. Highly corrosive materials requiring no metallic wetted parts. High pressure and temperature (greater than 200 bar) with conductive liquid. Sanitary/food safe applications. Use Mercap MCP 03.

Use a stilling well to provide second electrode reference. Use a stilling well as linearizer.

Use flange mount with D, DD seal version. Use HP version.

Page 8 MERCAP – INSTRUCTION MANUAL 7ML19981CM01.1

Mercap Configurations

The Mercap is a versatile level measurement instrument that can be designed for your specific application by taking the following conditions into consideration:

Process Connections

Any standard process connection is available with Mercap, and special versions can be fabricated to match the mounting and application requirements. Various sizes of threaded and flanged fittings are available.

Seal Types

The basic internal seal for the Mercap is of a conical-shaped, preloaded pressure/leak resistant construction. Up to three levels of seal protection are implemented depending on the integrity requirements of the application. A single or double cone internal seal forms 1 or 2 blocks against leaking, and a third flange face gasket is also available in the D and DD seal construction. The flange face seal also provides a design with no metal wetted parts if required.

Pressure and Temperature Considerations

The maximum temperature and pressure of operation for the standard Mercap level probe is 200°C (392°F) and 200 bar (2900 psi). There are, of course, qualifications that must be applied

to these maximums.

Enamel probes are suggested when process temperature exceeds 200 °C, and/or in combination with very high pressure.

Note:

: Consult Milltronics for chemical applications other than water.

: :

Process Connection and Seal Configuration of Mercap

Process Connection

Process Connection Seal Type

Process ConnectionProcess Connection

Threaded S Single Cone

Welded Flange S Single Cone

Solid Machined

Flange

Seal Type Seal Description

Seal TypeSeal Type

S Single Cone

D Single Cone + Teflon flange seal DD Double Cone + Teflon flange seal Consult factory* SD Double Cone (used for stilling well applications)

HP Consult factory*

Seal Description

Seal DescriptionSeal Description

Note: HP (high pressure) is only supplied with enamel insulation and a recommended

stilling well for protection of the enamel. A cone seal plus a secondary redundant seal is provided between the electrode and the stilling well.

7ML19981CM01.1 MERCAP – INSTRUCTION MANUAL Page 9

Examples of Mercap Level Instruments

The following graphics illustrate the variation in configurations available for the Standard series, Level and Interface series, and Sanitary series Mercap level instrument.

Note: All measurements are given in millimeters/inches.

Standard Level Version (Mercap MCP01)

This is the most common version of Mercap and is available with the following features:

• Threaded flanges, welded flanges, and solid flanges

• S series, D series, SD series, DD series, and HP series process seals.

• Selections of standard ANSI and DIN flanges are available

• The most common electrode is insulated with PFA, but Enamel (HP seal) is also

available as standard (Enamel is only available on rigid design).

• Various process connection materials are also available

• Rigid and Flexible Cable versions available

MCP01 (Standard) S-Series: Threaded Versions

S-Series: Threaded

∅160 (6.3”)

Active Shield

Insertion

Length+175

(6.9”)

Length

Inactive Tip

Page 10 MERCAP – INSTRUCTION MANUAL 7ML19981CM01.1

Active

Length

40 (1.57")

∅16 (0.63”)

or ∅24 (0.94")

120 (4.72")

S-Series Cable Version S-Series Cable Version

(with anchor)

∅160 (6.3”)

Transmitter Enclosure

55 (2.17")

Insertion Length

Dimension Varies

Seal Gland

Threaded Process Connector

See Order Instructions

PTFE Insulation

∅9 (0.35")

Tensile Weight+/-Varies

Inactive

Part

125 (4.9")

Insertion

Length

+175 (6.9")

Insertion

Length

MCP01 S-Series Threaded Features

• single process seal

• suitable for most level, interface, or detection applications

• high temperature and pressure resistance

7ML19981CM01.1 MERCAP – INSTRUCTION MANUAL Page 11

MCP01 (Standard) S-Series: Welded and Machined Flanged Versions

S-Series Welded Flange S-Series Machined Flange

TIG Weld

Insertion

Length

+185 (7.28")

Insertion

Length

+185 (7.28")

Inactive Tip

∅16 (0.63”)

or ∅24 (0.94")

Active Shield

Insertion

Length

Active

Length

Inactive Tip

40 (1.57")

∅16 (0.63”)

or ∅24 (0.94")

MCP01 S-Series Flange Features

• single process seal

• suitable for most level, interface, or detection applications

• high temperature and pressure resistant

Active Shield

Insertion

Length

Active

Length

40 (1.57")

Page 12 MERCAP – INSTRUCTION MANUAL 7ML19981CM01.1

MCP01 Standard D-Series: Machined Flanged Versions

D-Series DD-Series

∅160 (6.3") ∅160 (6.3")

65 (2.56")

Insertion

Length

Transmitter Enclosure

120 (4.72") 120 (4.72")

holes

Active Shield

Active Length

40 (1.57") 40 (1.57")

∅ ∅D

Flange Process Connection

PTFE Lining

Probe

Inactive Tip Inactive Tip

120 (4.72")

Insertion

Length

Active

Shield

Active

Length

holes

Transmitter Enclosure

Seal GlandSeal Gland

Flange Process Connection

∅ ∅D

PTFE Lining

Probe

∅16 (0.63”) or

∅24 (0.94")

MCP01 Standard D-Series Features

• single process seal

• all wetted parts made of PFA (probe

lining) or PTFE (flange face)

• according to NACE requirements

∅16 (0.63”) or ∅24 (0.94")

MCP01 Standard DD-Series Features

• double process seal

• redundant safety (e.g. Phenol,

Phosgene applications, etc.)

• all wetted parts made of PFA (probe

lining) or PTFE (flange face)

• according to NACE requirements

• suitable for turbulent and toxic

chemical applications

7ML19981CM01.1 MERCAP – INSTRUCTION MANUAL Page 13

SD-Series Probe/Thermal Isolator

∅160 (6.3") ∅160 (6.3")

Transmitter Enclosure

120 (4.72") 120 (4.72")

Seal

Dependent on

Gland

extension length

120 (4.72")

Active Shield Active Shield

Insertion

Length

Active

Length

holes

∅

40 (1.57") 40 (1.57")

∅16 (0.63”) or ∅24 (0.94")

Flange Process Connection

Probe

Inactive Tip Inactive Tip

85 (3.35")

Insertion

Length

Active

Length

holes

Transmitter Enclosure

Thermal Isolator

Seal Gland

Flange Process Connection

∅ ∅D ∅D

Probe

∅16 (0.63”) or ∅24 (0.94")

MCP01 Standard SD-Series Features

• double process seal

• redundant safety (e.g. Phenol,

Phosgene applications, etc.)

• all wetted parts made of PFA/PTFE

• according to NACE requirements

• suitable for turbulent and toxic

chemical applications

MCP01 Probe/Thermal Isolator Features

• thermal isolator

Page 14 MERCAP – INSTRUCTION MANUAL 7ML19981CM01.1

Interface and Level Version (Mercap MCP 02)

This version is designed specifically for interface level where a long distance active shield portion of the electrode is required (up to 35 meters) before the measurement portion of the electrode begins. This type of application is common in large storage tanks for oil where the bottom of the tank invariably has a layer of water below the oil. Often, when measurement spans as much as 5.5 meters (for the water), up to 35 meters of flexible bellows cable are used.

MCP02: Interface Version

∅160 (6.3")

Transmitter Enclosure

Seal Gland

Process Connection: flange or threaded

mounting

185 (7.28")

Dependent on extension length

Adjustable extension

part

Flexible Tube

Probe

∅16 (0.63”) or ∅24 (0.94")

Active Shield

Active Length

∅16 mm=2m ∅24mm=5.5m

100 (3.9")

Inactive Tip

Insertion Length 35m (115ft) max.

Process Connection Size

• threaded version: ¾", 1", 1½", 2"

NPT, BSPT, or JIS

• sanitary version: on customer

request

• flange version: on customer

request

Options

• thermal isolator

• stilling well

Aluminum Enclosure

• Nema 4/Type 4/IP65

Conduit Entry:

• ½" NPT (2x)

7ML19981CM01.1 MERCAP – INSTRUCTION MANUAL Page 15

Sanitary Level Version (Mercap MCP 03)

The hygienic design includes threaded and tri-clamp versions for use in the food and pharmaceutical industry.

MCP03: Sanitary Versions

Sanitary Thread Coupling Sanitary Tri-Clamp

∅160 (6.3")

Transmitter Enclosure

118 (4.65")

Seal Gland

Active Shield

Insertion

Length

Active

Length

40 (1.57")

Probe

Inactive Tip

∅16 (0.63”) or ∅24 (0.94")

MCP03 Sanitary Tri-Clamp Features

• maximum active length 5.5m

• minimum active length 50mm

IDF Nut

Inactive Tip

∅16 (0.63”) or

∅24 (0.94")

Seal Gland Tri-clamp Connection

Active Length

40 (1.57")

Active Shield

Insertion Length + 175 (6.9")

Insertion

Length

Page 16 MERCAP – INSTRUCTION MANUAL 7ML19981CM01.1

Flanges

Flange Standards

øL

øK (n holes)

øD

Note:

• All Sizes: MM

• One (1) inch: ^ 25.4mm

• Details: See drawings, technical data, and measuring probe details

7ML19981CM01.1 MERCAP – INSTRUCTION MANUAL Page 17

Temperature Versus Pressure Curve Mercap Level Probe

In this situation, as the temperature reaches 75°C (167°F) the maximum pressure must be derated. As the temperature reaches 200°C (392°F) the maximum pressure is limited to 50 bar (725 psi). This curve is typical for water only, for other, more aggressive chemicals the derating curve will be more severe.

Reference Product: Water

Note: For high temperature and pressure ratings for the Enamel probe, please

contact your Siemens Milltronics representative.

Page 18 MERCAP – INSTRUCTION MANUAL 7ML19981CM01.1

Applications Examples

Generic Application Calculations

The capacitance expected in a cylindrical tank with a probe centrally mounted is estimated using the following formula:

_air 24x0.95 pF = 12.7pF

C=ξ

Log (1/0.016)

In which

C = capacitance value in pF

= relative dielectric constant

L = active measurement length in meters D = internal tank diameter in meters d = electrode diameter in meters

= 1 (air)

= 2 (oil)

24 = a K constant (can be substituted for 7.32)

Mercap

d = 16mm

=1.0m

0.25m

L =0.95m

For Vessels Filled with Oil

The following equation applies to oil-filled vessels matching the dimensions shown above. Please note that the probe must be properly mounted and the metal tank is grounded.

increase for oil=ξr

Log (1/0.016)

increase for oil=ξr

Log (1/0.016)

This means that the capacitance value for 0% to 100% changes from 12.7 to 25.4 pF. After calibration then:

12.7 pF ≅ 0% ≅ 4 mA or 20 mA

25.4 pF ≅ 100% ≅ 20 mA or 4 mA

_oil-ξr _air 24x0.95 pF= 12.7pF

_oil-ξr _air 7.32x3.12 pF= 12.7pF

7ML19981CM01.1 MERCAP – INSTRUCTION MANUAL Page 19

A similar example in inches yields the following:

increase for oil=ξr

_oil-ξr _air 7.32x4.5 = 16.6 pF

Log (60/0.63)

So for this slightly larger tank, the capacitance ranges from 16.6 pF to 33.2 pF.

So on calibration:

16.6 pF ≅ 0% ≅ 4 mA or 20 mA

33.2 pF ≅ 100% 20 mA or 4 mA

Mercap

6" (0.5ft)

L = 54"

(4.5ft)

d = 0.63"

60"

(5.0ft)

Page 20 MERCAP – INSTRUCTION MANUAL 7ML19981CM01.1

Flow-Through Electrode

The Mercap flow-through electrodes provide the following multi-functional applications for a liquid pipe system:

• quality measurement

• interface measurement and detection

• product presence detection

The measurement occurs without placing an obstacle in the product line and uses capacitance to determine the physical characteristics of the product. In mixed liquids, the flow-through electrode can measure the degree of proportions (e.g. water in oil). The capacitance change is measured and transmitted by a 4-20/20-4mA signal and HART protocol.

Note: If the transmitter's ambient temperature exceeds 85° C/185° F (70° C/158° F) in

Ex zones) mount a thermopart between electrode head and transmitter housing.

FTS Series

The FTS series flow-through electrode is suitable for relatively high pressure and temperature conditions. It is installed using a sandwich connection between two flanges and a PTFE sealing ring to provide high chemical resistance.

Note: For flange dimensions and pressure ratings, refer to the chart on page 23.

ø160mm

(6.3")

125mm (4.9")

200mm (7.9")

+ Y

Transmitter Enclosure

2 X ½" NPT Cable Entry

Electrode Housing

Sandwich Connection

øX

øY

7ML19981CM01.1 MERCAP – INSTRUCTION MANUAL Page 21

PTFE lining

55mm (2.1")

FTS Specifications

Process Connections: Sandwich, acc. ANSI and DIN standards (table p. 23) Fitting length: 55mm (2.1") Material: AISI 316L or carbon steel C 35 Max. Pressure: 50 bar (dependent on pressure rated flanges) Max. Temperature: 200°C (398°F) Lining: PTFE (1mm thick) Transmitter Enclosure Aluminum ø160mm (6.3") Waterproof Classification: IP 65, NEMA 4/Type 4 acc. DIN 40050

FTF Series

The FTF series flow-through electrode is designed to accommodate the combination of hightemperature and high-pressure conditions. The electrode is installed using a flange mounting, and the PTFE sealing ring provides high chemical resistance.

Note: For flange dimensions and pressure ratings, refer to the chart on page 25.

ø160mm

(6.3")

Transmitter Housing

øX

øD

Bolt hole

180mm (7")

180mm (7") + D

2 X ½" NPT Cable Entry

125mm (4.9")

Electrode Housing (The length of the housing changes to accommodate

flange diameter.)

Flange Connection

PTFE Lining

100mm (3.9")

Page 22 MERCAP – INSTRUCTION MANUAL 7ML19981CM01.1

FTF Specifications

Process Connections: Flange, acc. ANSI and DIN standards (table p. 23) Fitting length: 100mm (3.9") Material: AISI 316L or carbon steel C 35 Max. Pressure: 50 bar (dependent on pressure rated flanges) Max. Temperature: 200°C (398°F) Lining: PTFE (1mm thick) Transmitter Enclosure: Aluminum ø160mm (6.3") Waterproof Classification: IP 65, NEMA 4/Type 4 acc. DIN 40050

Flanges acc. ANSI Standards (inches)

class ► 150 lbs 300 lbs 600 lbs nom. size ▼ Dx y D xy D x y

1" 4.3 1.1 2.5 4.9 1.1 2.8 4.9 1.0 2.7 2" 6.0 2.1 4.0 6.5 2.1 4.3 6.5 1.9 4.2 3" 7.5 3.1 5.2 8.2 3.1 5.7 8.3 2.9 5.7 4" 9.0 4.0 6.7 10.0 4.0 7.0 10.8 3.8 7.5 5" 10.0 5.1 7.6 12.5 5.1 8.4 13.0 4.8 9.4

8" 13.5 8.0 10.9 15.0 8.0 12.0 16.5 7.6 12.5 10" 16.0 10.0 13.3 17.5 10.0 14.1 20.0 9.8 15.6 12" 19.0 12.0 16.0 20.5 12.0 16.5 22.0 11.8 17.9

Flanges acc. DIN Standards (mm)

class ► PN 16 PN25 PN40 nom. size ▼ Dx y D x y D x y

NW 25 115 24.8 71 115 24.8 71 115 24.8 71 NW 50 165 51.2 107 165 51.2 107 165 51.2 107

NW 80 200 82.5 142 200 82.5 142 200 82.5 142 NW 100 220 100.8 162 235 100.8 167 235 100.8 167 NW 125 250 125 192 270 125 193 270 125 193 NW 150 285 150 217 300 150 223 300 150 223 NW 200 340 204.2 272 360 203.4 283 375 203.4 290 NW 250 405 254.4 328 425 252.8 340 450 252.8 352 NW 300 460 303.8 383 485 302 400 515 302 417

7ML19981CM01.1 MERCAP – INSTRUCTION MANUAL Page 23

MST9500 Transmitter

Operating Principles

The instrument's MST9500 transmitter measures the capacitance of a sensor/electrode relative to the reference electrode (often the tank wall) and transforms it to a 4-20 mA signal. Applications include level measurement, level detection, flow measurement, and flow detection.

The measurement capacitance is usually obtained by using an insulated probe inserted in the tank, forming one electrode of the capacitor. The wall of the tank forms the other electrode of the capacitor.

A stilling well is used when the silo or tank is not conductive, or when the shape of the tank cannot guarantee linear measurement. The stilling well is a (grounded) metal tube with vent openings, which fits around the electrode. The stilling well diameter is somewhat larger than the diameter of the electrode, depending on the application.

A significant advantage of the MST9500 is the Active Shielding feature. It prevents any capacitance that may occur in the connection cable, process connection, and non-active parts of the probe from interfering with the measurement. As a result, the capacitance registered by the MST9500 consists only of the measuring capacitor, and a more stable and more reliable measurement is provided.

Conventional Capacitance

Measurement

Measuring-Circuit

MST9500 with

Active Shield

Measuring- Circuit

C1 = Cap. connection poin C2 = Cap. connection cable C3 = Cap. Process connection,

includes inactive part

Ca = Initial capacitance (air) Cm = Cap. Increasement (product)

Due to intrinsic safety requirements, the entire MST9500 transmitter is potted in epoxy resin that also protects the electronics against mechanical vibration and moisture influences. The

-12

maximum measuring range of the MST9500 is 3300 pF (1pF ≅ 10

F).

The electrode is connected by means of a mini-coax cable. The screw connection is intended for grounding the tank or stilling well.

Note: This ground must be connected to the tank and/or stilling well.

Page 24 MERCAP – INSTRUCTION MANUAL 7ML19981CM01.1

Installation and Interconnection

This section discusses the following:

• housing types supplied with the MST9500

• supply voltage requirements

Transmitter Module Housing

The MST9500 electronics is housed in a plastic box and fully potted in epoxy resin. This construction is necessary for EEx approval and protects the components against mechanical shock and the influence of moisture. The microprocessor is placed on an IC socket so the unit can be upgraded at a later stage by implementing software changes.

The processor chip is covered with a special sticker that contains product information and acts as a protection seal for moisture.

Note: Damage or removal of the sticker voids the warranty for the MST9500.

In most cases, the transmitter is in a Milltronics-supplied metal housing, providing reliable operation in environments with dust, moisture, and high frequency interference.

• cable requirements

• connection diagrams

The electronics operate at temperatures ranging between -40°C to 85°C, which means that protection equipment, such as sun shields, are not normally required.

Metal Housing and Electrode Assembly

The MST9500 is mounted in a powder-coated aluminium housing. The housing provides a separate customer wiring area in line with the cable conduit inlet/outlet openings.

Terminals for:

• Instrument connection (2-wire current loop)

• Ground connection (wire with a sufficiently large conductor diameter)

As the measurement occurs between the Measurement and Ground connection, it is important to have good, low-resistance, reliable connections in this circuit.

IMPORTANT: A reliable and stable ground connection is required to achieve a stable and reliable measurement.

For the Ground connection, a solid electrical connection must be made between the ground point on the housing and the process connection with either a stilling well and/or tank wall.

In the Milltronics housing, the ground connection between the transmitter and the housing has already been made with the ground connection point. The instrument system ground must be connected to this ground connection point.

The instrument loop connection for the MST9500 is a 2-wire cable. The positive wire must be connected to terminal terminal

7ML19981CM01.1 MERCAP – INSTRUCTION MANUAL Page 25

2. (See the connection diagrams on page 27.)

1 (the terminal slot nearest the housing wall), and the negative wire to

Incorrect power connection will not damage the MST9500. However, it can lead to a larger current (~40 mA) through the loop, and it will not operate with incorrect polarity.

The MST9500 is isolated from the power supply that provides for the opportunity of grounding either line (positive or negative) if requirements for Ex safety are followed and the power supply voltage is less than 33 Vdc.

Caution: During connection, do not leave moisture or metal scrap (of the cable shielding

etc.) in the housing. This can interfere with transmitter operation.

Interconnection

Supply

The supply voltage requirements for the MST9500 are shown in the installation figures on page 27. Because the MST9500 uses a switched power supply circuit, the required terminal voltage

voltage depends on the total measuring current. In case of a higher current value, a lower

voltage voltage terminal voltage is allowed.

For example, when using a 250 Ohm measuring resistance without barrier and cable resistance, the supply voltage should be at least 14.5V. A 250 Ohms measuring resistance, a barrier of 280 Ohm, and 20 Ohm cable resistance (500 m) results in a total of 550 Ohm, therefore a minimum supply voltage of 20.5 Volts (approx.). In case of a multi-drop application, where the measuring current is fixed to 4 mA, the supply voltage on the terminals of the MST9500 should be at least 12 Volts.

terminal

terminalterminal

Cable

The selection of the cable is mainly determined by two criteria:

1. The resistance of the copper conductor (Ohm)

2. The cable capacity (pF)

The copper resistance influences the voltage drop over the cable. The cable capacitance influences the HART example, it has a diameter of 1 mm capacitance of 100 pF/m. To maintain reliable transfer of the HART indicated that the RC time of the connection parts should never be more than 65 µSec. For output signals (from the MST9500), only the cable and barrier resistance counts. For input signals it is less favourable since the measuring resistance also counts.

(RB + RM) x CC should be max. 65 µSec. (R in Ohm, C in Farad, T in Sec). For a standard 28 V 280 Ohm barrier and a 250 Ohm measuring resistance, a field capacitance of 0.123 µF is allowed. This is higher for IIC (I/S) applications than allowed; therefore, attenuation of HART signal will not occur.

In IIB applications, where the maximum allowed capacity value is 0.33 µF, the cable length allowed will be longer than actually allowed for HART™. Depending on cable specifications, the maximum length lies between 1 and 3 km.

signals and is important for intrinsically safe applications. If, for

, the result is a copper resistance of 36.8 Ohm/km and a

modem signals, it is

When making Ex calculations, only the cable capacitance at the transmitter side of the barrier counts. For damping calculations, the cable capacity at the other side of the barrier should also be considered.

Page 26 MERCAP – INSTRUCTION MANUAL 7ML19981CM01.1

Connection Diagrams

XP∗ (Cenelec) Version

Push Button

Command Selection Switch

Connector

Measuring Signal

Ground

4-20 mA loop connection

1 = positive wire (+)

2 = negative wire (-)

Ground

GP* (FM/CSA/Cenelec) Version / IS* (FM/CSA/Cenelec) Version /

XP* (FM) Version

Push Button

Command Selection Switch

Connector

Measuring Signal

Ground

4-20 mA loop connection

1 = positive wire (+)

2 = negative wire (-)

Current check – terminal 1 and 3

Ground

∗ GP = General Purpose

IS = Intrinsically Safe XP = Explosion Proof

7ML19981CM01.1 MERCAP – INSTRUCTION MANUAL Page 27

The MST9500 is equipped with three terminals, two of which are intended for connecting loop

power instrument cables. This connection is protected against incorrect polarity. The third terminal allows the measurement of the current in the instrument cable with any digital current meter instrument, without breaking the loop circuit.

The MST9500 also includes the following:

• command push-button

• command selection switch (4 positions)

position position position position

1 record measured value for 4 mA 2 record measured value for 20 mA 3 field service use 4 TEST function

• 15 pin sub-D connector  field service use

The transmitter is powered by the current loop and needs at least 9-13 Volt (9 V at 22 mA, 13 V at 3.6 mA) on the terminals. The maximum supply is 33 Volt. In case of higher voltages, the safety diode will conduct, leading to an increase in power consumption. Some overload can be tolerated indefinitely.

As a result of well-designed circuitry, the internal capacitance and inductance on the terminals are isolated and do not interfere with safety calculations.

The MST9500 is equipped with the HART

communication protocol so that settings and

information can be obtained and altered locally or remotely.

The internal diagnostic functions continuously monitor the correct operation of the electronics. An error signal is generated if a failure or irregularity occurs.

MST9500 sends the signal current according to the NAMUR NE 43 recommendation. This means that the current remains between 3.8 and 20.5 mA during normal operation. If the process exceeds its normal limits, the current will be limited to 3.8 or 20.5 mA.

If there is a transmitter fault in the MST9500, or a test (position

4) produces an error result,

the signal is changed to 3.6 or 22 mA.

Current values to signalize from digital transmitters

Measurement value (M)

Fault- m

Value (F)

Fault- mA

Value (F)

Current values for signal detection

Measurement value (M)

F:=0

Fault- mA

Value (F)

Fault- mA

Value (F)

F:=1

Page 28 MERCAP – INSTRUCTION MANUAL 7ML19981CM01.1

F:=1

Whenever the local situation allows, the zero adjustment and the full scale can be recorded with the press of a button. Furthermore, the HART the MST9500 according to specific requirements.

The galvanic isolation between the measuring circuit and current loop provides immunity during the use of cathode protected measuring tanks. Connection to PLC equipment is possible without any problems.

implementation allows for adjustment of

Factory Settings

The MST9500 has a number of default factory settings. If the required settings for the application are known, the settings can be modified during final testing.

Settings:

Setting

Setting Description

SettingSetting

ID has a unique serial number PV Units pF USL(PV) 3300 pF LSL(PV) 1.666 pF URV(PV) 3300 pF [switch. position 2] LRV(PV) 0.00 pF [switch. position 1] AO1(PV) 4-20 mA is 0-100% TAG "customer input data via HART" DESCRIPTOR "customer input data via HART" MESSAGE "Milltronics" DATE "customer input data via HART" SENSOR SERIAL NUMBER "customer input data via HART" FINAL ASSEMBLY NUMBER "customer input data via HART" SV Units UNDEFINED SVLRV 0 SVURV 1.0

Description

DescriptionDescription

As the USL and LSL are set to 3300 respectively 1.666 pF, the following applies:

• The MST9500 can be adjusted with the push-button. The URV and LRV, which

should be inside

• Interruption of the measuring connection is detected. A loose or interrupted

connection results in to up to 0.5 pF capacity, which is below the adjusted LSL.

7ML19981CM01.1 MERCAP – INSTRUCTION MANUAL Page 29

inside the USL and LSL, can be set anywhere in the entire range.

inside inside

Applications and Grounding

Several common applications appear in this section. Common applications are separated into two types: those with System Grounding and those with Safety Grounding.

System Grounding (referencing)

The correct operation of the measuring system depends on the correct method of grounding. Make sure that there is a reliable connection to the reference electrode (usually a metal tank). Some common applications involving system grounding include:

• metal tanks

• metal tanks, cathodically protected

• non-conductive tanks

Metal Tanks

Metal tanks can be (and in most cases are) normally grounded.

The connection of the MST9500 can be accomplished as shown here. If a stilling well is used, it is important that its metal parts are properly grounded.

Ground Lug

Metal

Page 30 MERCAP – INSTRUCTION MANUAL 7ML19981CM01.1

Cathodically

Protected Metal

Tanks

Cathodically protected metal tanks are never directly grounded. However, the impedance of the supply source is so low that this does not cause any problems.

The connection of the MST9500 in such a situation can be realised as shown here. If a stilling well is used, it is important that the metal parts of it are grounded on the tank

grounded on the tank, which

grounded on the tankgrounded on the tank means being connected through an electrical connection.

Ground lug

Non-Conductive

Tanks

Non-metallic tanks always require a stilling well or proper grounded conductive medium.

The connection of the MST9500 in such a situation can be realised as shown here. The metal parts of the stilling well should be properly grounded.

Metal

Optional Stilling Well

Ground lug

7ML19981CM01.1 MERCAP – INSTRUCTION MANUAL Page 31

Stilling Well

Synthetic

Safety Grounding

The application, in combination with the connected instruments, determines the safety grounding. The MST9500 transmitter does not have any special requirements due to the galvanic separation between the measurement section and the loop section.

The characteristics of DCS can vary. Some DCSs measure the current through the loop compared to a common 0 Volt point, others measure in the positive wire or connector. In the first case, the negative side of the current loop should not be grounded because measurement inputs can become short-circuited. In the second case, the negative side of the current loop can be grounded. Another type of DCS has galvanically separated inputs for each measurement channel, so the grounding method can be chosen as required.

If no specific Ex conditions apply, the MST9500 can, and is allowed to be, directly connected to the control system (DCS). The supply voltage, however, should remain within the limits set by the MST9500. Connecting an MST9500 to DCS does not influence that equipment, see Example 1 below. Grounding of one of the connection cables can be done if desired.

Example 1

In case of Ex applications, where the DCS equipment measure in the positive connection and the negative connection can be grounded, a barrier type as shown in Example 2 is sufficient.

Example 2

Page 32 MERCAP – INSTRUCTION MANUAL 7ML19981CM01.1

Stahl barrier: 9002/01-280-110-00

(or equal)

However, if you do not want a direct grounding of the negative connection, and in the case of Ex applications where the DCS measures in the negative connection, and that wire cannot be grounded, a barrier type as shown in Example 3 is required.

Example 3

Stahl barrier: 9002/13-280-110-00

(or equal)

This barrier is also used in case of XP (Cenelec) applications. The barrier is then placed in the transmitter housing. Grounding is not always direct in this case, because of a possible installation on cathodically protected tanks, as in Example 4.

Example 4

Stahl barrier: 9002/13-280-110-00

(or equal)

In case of Ex applications where the DCS have galvanically separated inputs, both types of barriers can be used. See Examples 2 and 5.

7ML19981CM01.1 MERCAP – INSTRUCTION MANUAL Page 33

Example 5

Stahl barrier: 9001/01-280-110-10

(or equal)

When Ex applications are using an Ex approved supply unit, the barriers are not used and grounding is optional.

Page 34 MERCAP – INSTRUCTION MANUAL 7ML19981CM01.1

Start-up

Capacitive measurement requires adjustment of the instrument based on the application conditions. Two types of adjustment methods are available:

• push-button

• HART™

Push-Button Adjustment

If it is possible to adjust the level of the tank as required to the 0% and 100%, the MST9500 transmitter can be set very easily using the push-button.

1. Set value for 0%:

a. Bring the level of the product to the value that corresponds with 0%.

b. Turn the rotary switch to position 1.

c. Press the push-button, hold for approximately 2 seconds.

2. Set value for 100%:

a. Bring the level of the product to be measured to the level which corresponds with

100%

b. Turn the rotary switch to position 2.

c. Press the push-button, hold for approximately 2 seconds.

3. The MST9500 transmitter is now set.

a. Turn the rotary switch back to position 4. Position 4 prevents the alteration of

settings if the push-button is pressed accidentally.

Note: If the difference in the capacitance value between the 4 mA point and the 20

mA point is smaller than the minimum span value (3.3 pF), the new value will not be accepted.

During normal operation, the 4 and/or 20 mA point can be set at any time.

7ML19981CM01.1 MERCAP – INSTRUCTION MANUAL Page 35

Adjustment using HART

The MST9500 transmitter can be adjusted using HARTTM, with a HART communicator, a laptop running Cornerstone or with the Host system (D.C.S.). The local circumstances determine the manner in which adjustment takes place. If the circumstances allow the product to be brought up to the 0% and 100% point level, adjustment is simple.

Example of adjustment by means of a Rosemount 275 hand-held communicator, fitted with the GENERIC device descriptor:

Example 1

In this situation, the level of the product can be easily adjusted to 0 and 100%.

1. Switch on the 275 and request connection with the MST9500.

a. Select: Online

b. Select: Device set-up

c. Select: Diag service

d. Select: Calibration

e. Select: Apply values

f. Select: 4 mA

2. Bring the level of the product to the level which corresponds with 4mA.

a. Select: Read new value

b. Select: Set as 4 mA level

3. The 4 mA point has now been set.

a. Select: Exit (you return to Apply values)

b. Select: 20 mA

4. Bring the level of the product to the level which corresponds with 20 mA.

a. Select: Read new value

b. Select: Set as 20 mA level

5. The 20 mA point has now been set.

Page 36 MERCAP – INSTRUCTION MANUAL 7ML19981CM01.1

Example 2

In this situation, the capacitance values are known in advance.

1. Switch on the 275 and establish connection with the MST9500.

a. Select: Online

b. Select: Device set-up

c. Select: Diag service

d. Select: Calibration

e. Select: Enter values

f. Select: PV LRV

2. Enter required capacitance value for 0% of the range

a. Select: PV URV

3. Enter required capacitance value for 100% of the range

a. Select: Send (the values are now sent)

Example 3

In this situation, the capacitance values are not known and the level of the product can not be set to 0% and 100%. To do this it is necessary to perform a number of measurements of the capacitance value at various levels. These values can be read in % with the 275 communicator.

1. Switch on the 275 and establish connection with the MST9500.

a. Select: Online

b. Select: PV

The measured value can be read continuously, even if current loop value is min. or max.

2. Write down the measured value in pF with the corresponding level. Suppose the following results were recorded:

a. at 17% the measured PV value was 52 pF

b. at 79% the measured PV value was 181 pF

This results in a difference of (181-52)/(79-17)=2.08 pF per %.

c. 17% means 17 * 2.08 = 35.37 pF.

d. For 0% the capacitance value has to be 52-35.37=16.62 pF.

e. 100% is 100 * 2.08=208 + 16.62 = 224.6 pF.

With these calculated values, the MST9500 can be adjusted as described in Example 2 more accurately the values are measured at 0%, and, respectively, at 100%, the more accurate the final result will be.

7ML19981CM01.1 MERCAP – INSTRUCTION MANUAL Page 37

Example 2. The

Example 2Example 2

Example 4

This situation involves the re-adjustment of the LRV where the actual value is determined to be 17% and the measurement shows e.g. 14%. Assume that the URV was set to 240 pF.

1. Switch on the 275 and establish connection with the MST9500.

a. Select: Online

b. Select: PV

The measured value can now be read continuously.

2. Write down the measured value in pF, e.g. 80 pF.

3. We now calculate 100-17=83%.

We calculate 240-80=160pf. We calculate 160/83=1.927 100 % will be 100 x 1.927= 192.7pF The new LRV should be 240-192.7=47.22 pF.

4. Adjust URV and LRV according to Example 2

If the D.C.S. and/or the 275 are fitted with the Device Descriptor for the MST9500, more functions can be used.

The available functions are:

Number

Number Description

NumberNumber

(48) Read Additional Transmitter Status (38) Reset Configuration Changed Flag (128) Set Alarm Select (129) Adjust for Product Build-up on Sensor (130) Set Sensor Upper Limit (USL) (131) Set Sensor Lower Limit (LSL) (132) Write Sensor Limit Values (USL/LSL) (140) Write SV Units and Range Values (141) Read SV Units and Range Values (144) Reset recorded PV min./max values back to PV (145) Show recorded PV min./max. values (146) Set ratio for Span (147) Read ratio for Span (148) Set ratio for Zero (149) Read ratio for Zero

Description

DescriptionDescription

Example 2, whereby the URV value is simply copied.

Example 2Example 2

Page 38 MERCAP – INSTRUCTION MANUAL 7ML19981CM01.1

Maintenance

This section discusses the test function and maintenance checks.

Test function

The MST9500 has a test function, which changes the measuring reference, allowing for the operation of the entire circuitry to be checked from input to output. The essence of the test function is changing the measuring capacitance by a fixed factor; the resulting measured value is evaluated for accuracy. If the capacitance 'registered' by the sensor changes significantly, the result of the test yields an error result.

The test function can be activated in the following ways:

• Via the push-button

• Via HART

Starting TEST via the push-button

To do this, the four-position switch has to be set to position 4 (this is also the recommended position during normal operation). After pressing the key (approximately 1 second) the test cycle starts. To indicated that the test has started the current through the loop increases by

0.25 mA. During the test, the loop current stays within the values of the process limits; if the

original current was 20.5 mA the difference will be less due to the transmitter saturation at the top end of the normal active range.

The test cycle lasts for a total of 10 seconds. At the end, if the test is successful, the current will return to the original value. If the test fails, the current will show the error value. The error value remains until the next test is completed successfully or the MST9500 is started again (switch power off and on again). The test cycle status is available through HART

Starting TEST from HART

If the test is started through a HARTTM command, the current will be fixed during the test to the value present at the start of the test. The running of the test cycle is available as a status

via HART the test result via HART can be read via HART

. After the test completes the current reflects the process value again and pass on

. The current is given an error value if the test fails. The test result

Checks

The MST9500 transmitter has been manufactured with high-grade components, which means ageing will not have any significant influence on the performance of the electronics. The unit also performs an extensive self-diagnosis. It is recommended that periodic inspections of the MST9500 be scheduled.

7ML19981CM01.1 MERCAP – INSTRUCTION MANUAL Page 39

The possible checks can be subdivided in two main groups:

1. Visual Checks

a. inside enclosure clean and dry

b. enclosure sealing intact and working properly (not hardened)

c. all screw connections are tight

d. ground connections inside intact

e. ground connections outside intact

f. no oxidation on push-button and 15 pole source connector

g. no dirt or deposits on coax connector

h. no cable or wires jammed under cover

2. Functional Checks

a. provides manual test function 0.25 mA current increase during 10 seconds

b. check for required minimum terminal voltage

c. does the current go to the alarm position (3.6 or 22 mA) if the coax plug is

unplugged? If so, fasten it again.

d. via HART

Does the PV go to 0 pF when the coax plug is unplugged (±0.15 pF is allowed)? If so, switch the output current to 4 respectively 20 mA and check the current through the loop.

Page 40 MERCAP – INSTRUCTION MANUAL 7ML19981CM01.1

Appendix A: HARTTM Documentation

This section provides information on using HARTTM.

HARTTM info

Expanded Device Type Code:

Manufacturer Identification Code = 84 Manufacturer Device Type Code = 249 Expanded Device Type Code = 21753

Physical Layer Information

Field Device Category = A Capacitance Number (CN) = 1

HARTTM Conformance and Command Class

MST9500 transmitter Conformance and Command Class summary.

Command

CommandCommand

Number

NumberNumber

Conformance Class #1

Conformance Class #1Conformance Class #1

0 Return Unique Identifier 1 Read Primary Variable

Conformance Class #1A

Conformance Class #1AConformance Class #1A

0 Return Unique Identifier 2 Read P.V. Current and Percent of Range

Conformance Class #2

Conformance Class #2Conformance Class #2

11 Read Unique Identifier Associated with Tag 12 Read Message 13 Read Tag, Descriptor and Date 14 Read Primary Variable Sensor Information 15 Read Primary Variable Output Information

Description

Description Usage

DescriptionDescription

Usage

UsageUsage

Universal

16 Read Final Assembly Number

Conformance Class #3

Conformance Class #3Conformance Class #3

3 Read Dynamic Variables and P.V. Current Universal

48 Read Additional Transmitter Status Common Practice

7ML19981CM01.1 MERCAP – INSTRUCTION MANUAL Page 41

Command

CommandCommand

Number

NumberNumber

Conformance Class #4

Conformance Class #4Conformance Class #4

Description

Description Usage

DescriptionDescription

35 Write Primary Variable Range Values 36 Set Primary Variable Upper Range Value 37 Set Primary Variable Lower Range Value 38 Reset Configuration Changed Flag 40 Enter/Exit Fixed Primary Var. Current mode 41 Perform Transmitter Self Test

Conformance Class #5

Conformance Class #5Conformance Class #5

6 Write Polling Address 17 Write Message 18 Write Tag, Descriptor and Date 19 Write Final Assembly Number

Usage

UsageUsage

Common Practice

Universal

44 Write Primary Variable Units 45 Trim Primary Variable Current DAC Zero 46 Trim Primary Variable Current DAC Gain 49 Write Primary Variable Sensor Serial Number 59 Write Number of Response Preambles

128 Set Alarm Select 129 Adjust for Product Build-up on Sensor 130 Set Sensor Upper Limit 131 Set Sensor Lower Limit 132 Write Sensor Limit Values 140 Write S.V. Units and Range Values 141 Read S.V. Units and Range Values 144 Reset recorded PV min./max values back to PV 145 Show recorded PV min./max. values 146 Set ratio for Span 147 Read ratio for Span 148 Set ratio for Zero

Common Practice

Transmitter Specific

149 Read ratio for Zero

Page 42 MERCAP – INSTRUCTION MANUAL 7ML19981CM01.1

MST9500 DD Menu/Variable Organization

Root Menu Device Setup Menu Process Variables

Device setup menu PV digital value PV upper range value PV lower range value SV digital value SV upper ran

Process variables Diagnostics/service Basic setup menu Detailed setup menu Autocal

Review menu

Sensor digital value Input percent range A0 analog value PV maximum recorded PV minimum recorded

Reset max/min records

Diagnostics/service Self tes Loop test Calibration Dac trim

Basic Setup Menu Tag PV digital units Device info menu PV transfer function PV dampin

Detailed Setup Menu Measuring elements menu Signal conditioning menu Output conditioning menu Device info menu

Autocal Menu High calibration level Low calibration level

Review Menu Device Info Menu Device type Private label distribution PV digital units Sensor units Upper sensor limit Lower sensor limit Minimum span Damping value Input percent range Transfer function Input range units Upper range value Lower range value A0 analog value A0 alarm code Write protect Manufacturer ID Device ID Tag Descriptor Message Date Universal revision Transmitter revision Software revision Polling address Request preambles

value

Auto Calibration Menu

Applied rerange Keypad rerange

Zero correction

Measuring Elements Menu

PV upper sensor limi PV lower sensor limit PV minimum span PV sensor units PV Upper range value

PV Lower range value

Signal Conditioning Menu

Damping value Upper range value Lower range value Transfer function

Percent range

Output Condition Menu

Analog output menu Hart output menu

Private label distribution Device type Device ID Tag Date Write Protect Descriptor Message PV sensor serial number Final assembly number

Device revisions menu

Analog Output Menu

PV analog value PV alarm select Dac trim

Loop test

Hart Output Menu

Polling address Request preambles

Device Revisions Menu

Universal revision Transmitter revision

Software revision

7ML19981CM01.1 MERCAP – INSTRUCTION MANUAL Page 43

HARTTM Response Code information

Additional response code information, Second Byte.

Bit #7: Field Device Malfunction

When the transmitter detects a malfunction, the Analog Output will be set in a fault state.

Bit #6: Configuration Changed

When any of the settings in EEROM is changed either by a write command or by manual ZERO or SPAN adjust, this bit is set. Use command 38 to reset.

Bit #5: Cold Start

This bit is issued once after an initialization cycle is complete; this can occur after a power loss or as a result of a (watchdog) reset.

Bit #4: Extended Status Available

When any of the extended status bits is set this flag is raised. Use command 48 to get detailed status information.

Bit #3: Output Current Fixed

This bit is set as long as the Primary Variable Analog Output is set to a fixed value.

Bit #2: Primary Variable Analog Output Saturated

Flag is set when the Primary Analog Output saturates below 3.8 mA and above 20.5 mA.

Bit #0: Primary Variable Out of Limits

This flag is set whenever the Transmitter Variable #0 (in pF), the Primary Variable exceeds the Sensor Limits returned with Command 14, Read Primary Variable Sensor Limits.

General transmitter information

Damping information

The MST9500 transmitter implements damping only on the Analog Output Current signal. This is a fixed algorithm.

Non-volatile Memory Data Storage

The flags byte of Command #0 referenced in the Universal Command Specification document, will have Bit #1 (Command #39, EEPROM Control Required) set to 0, indicating that all data

Page 44 MERCAP – INSTRUCTION MANUAL 7ML19981CM01.1

sent to the transmitter will be saved automatically in the non-volatile memory upon receipt of the Write or Set Command. Command #39, EEPROM Control, is not implemented.

MultiDrop operation

This revision of the MST9500 transmitter supports MultiDrop Operation.

Burst mode

This revision of the MST9500 transmitter does not support Burst Mode.

Units conversions

The Primary Variable Units are in pF and cannot be changed. The Primary Variable Sensor Limits are also in pF and the same for the Primary Variable Range Values.

The Secondary Variable Range Values may be set to any Units and Value with Command #140. The S.V. Range Values may be read at any time with Command #141.

The value returned as S.V. is the result of the following calculation:

S.V. = P.V. Range in percent x (SVURV - SVLRV) + SVLRV.

This method provides a means to transfer the P.V. which is always in pF, to an alternative level- or contents value.

Additional universal command specifications

Command #3 Read Dynamic Variables and P.V. Current

The Primary Variable returns the Transmitter Variable #0 always in pF.

The Secondary Variable returns the Transmitter Variable #1 which is the Alternative Range Value.

Additional common-practice command specifications

The MST9500 implements a subset of the Common Practice Commands specified in the Common-Practice Specification document. This section contains information pertaining to those commands that require clarification.

Command #35 Write Primary Variable Range Values

The Primary Variable Range Unit Codes will only accept units in pF.

7ML19981CM01.1 MERCAP – INSTRUCTION MANUAL Page 45

Command #41 Perform Transmitter Self Test

The Self Test for the MST9500 will commence as soon as the response from the transmitter is complete and during this time the Primary Variable Value and thus the Primary Variable Analog Output remains frozen at the level existing at the initiation of the test. The test requires about 10 seconds to complete and tests if the measuring circuit operates as expected. The status of the test and the results can be read using Command #48, Read Additional Transmitter Status. During test the HART however if a second Command #41 is send during the test a 'Transmitter Specific Command Error' is returned.

communication operates normally,

Command #44 Write Primary Variable Units

The Primary Variable Units accepted by this transmitter is only pF (pico Farads).

Command #48 Read Additional Transmitter Status

This command returns the results of the Transmitter Self Test along with other transmitter information.

Byte #0

Byte #0 Events (May be gone, but sent at least once)

Byte #0Byte #0

Events (May be gone, but sent at least once)

Events (May be gone, but sent at least once)Events (May be gone, but sent at least once)

Bit #0 EEROM write error Bit #1 Floating point Math error Bit #2 Undefined Bit #3 Undefined Bit #4 Undefined Bit #5 WatchDog Reset occurred Bit #6 Local (manual) test active Bit #7 Proprietary commands enabled

Byte #1

Byte #1 Status (will be sent as long as status exists)

Byte #1Byte #1

(*) causes Device Malfunction to be set. Byte #2,3,4,5, 14 thru 24 are undefined.

Page 46 MERCAP – INSTRUCTION MANUAL 7ML19981CM01.1

Status (will be sent as long as status exists)

Status (will be sent as long as status exists)Status (will be sent as long as status exists)

Bit #0 Undefined Bit #1 Undefined Bit #2 Undefined Bit #3 DAC output drive failure Bit #4* Measuring circuit failure Bit #5* ROM/EEROM checksum error Bit #6 Test active (manual or cmd #48 started) Bit #7 Test Fail (manual or cmd #48 started)

Transmitter specific commands

Command #128 Set Alarm Select

This command specifies the state of the Primary Variable Analog Output in case of device malfunction. The status of this variable is returned in byte #0 with Command #15 Read Primary Variable Output Information.

This command accepts only the values 0 or 1 resp. Alarm Select High or Alarm Select Low.

Request data bytes

Data bytes #0

Alarm Select Code

Data byte #0 Alarm Select Code, 8-bit unsigned integer,

Selection may be either 0 or 1.

Response data bytes

Data bytes #0

Alarm Select Code

Data byte #0 Alarm Select Code, 8-bit unsigned integer,

Refer to Alarm Selection Codes, table VI.

Command #129 Adjust for Product Build-Up on Sensor

This command sets the lowest of LRV/URV equal to the actual P.V. value.

This compensates for shift in LRV (0-100% range) or URV (100-0% range) due to product-buildup on the sensor.

Request data bytes

None

Response data bytes

None

7ML19981CM01.1 MERCAP – INSTRUCTION MANUAL Page 47

Command #130 Set Upper Sensor Limit

This command sets the Upper Sensor Limit value to the actual P.V. value.

Request data bytes

None

Response data bytes

None

Command #131 Set Lower Sensor Limit

This command sets the Lower Sensor Limit value to the actual P.V. value.

Request data bytes

None

Response data bytes

None

Command #132 Write Sensor Limit Values

This command writes specific values to the Upper and Lower Sensor Limits. The Units selection is only accepted in pF. The Lower Sensor Limit Value must not be less than zero and not more than the Upper Sensor Limit Value.

The Upper Sensor Limit Value may not be more than 3300 and no less than the Lower Sensor Limit. The minimum distance between Upper- and Lower Sensor Limit is forced to be at least

3.3 pF. The actual Upper- and Lower Sensor Limit Values can be read with command #14 Read Primary Variable Sensor Information.

Request data bytes

Data byte #0

Sensor Limits Units #1 Upper Sensor Limit MSB

#5 Lower Sensor Limit MSB

#2 #3 #4

Upper Sensor Limit LSB

#6 #7 #8

Lower Sensor Limi LSB

Data byte #0 Sensor Limits Units Code, 8-bit unsigned integer, must

Data byte #1-#4 Sensor Upper Limit Value, IEE754 Data byte #5-#8 Sensor Lower Limit Value, IEE754

Page 48 MERCAP – INSTRUCTION MANUAL 7ML19981CM01.1

be 153 (pF)

Response data bytes

Data byte #0

Sensor Limits Units #1 Upper Sensor Limit MSB

#2 #3 #4

Upper Sensor Limi LSB

#5 Lower Sensor Limit MSB

Data byte #0 Sensor Limits Units Code, 8-bit unsigned integer. Data byte #1-#4 Sensor Upper Limit Value, IEE754 Data byte #5-#8 Sensor Lower Limit Value, IEE754

#6 #7 #8

Lower Sensor Limi LSB

Command #140 Write S.V. Units, Upper and Lower-Range Values

This command writes the units and values for the Secondary Variable Range Values. The command accepts any Units type and/or values. It is up to the user to choose input that makes sense for the application.

Request data bytes

Data byte #0

S.V Range Units Code #1 S.V. Upper Range MSB

#2 #3 #4

S.V Upper Range LSB

Data byte #0 S.V. Units Code, 8-bit unsigned integer. Data byte #1-#4 S.V. Upper Range Value, IEE754 Data byte #5-#8 S.V. Lower Range Value, IEE754

7ML19981CM01.1 MERCAP – INSTRUCTION MANUAL Page 49

#5 S.V. Lower Range MSB

#6 #7 #8

S.V. Lower Range LSB

Response data bytes

Data byte #0

S.V Range Units Code #1 S.V. Upper Range MSB

#2 #3 #4

S.V Upper Range LSB

#5 S.V. Lower Range MSB

Data byte #0 S.V. Units Code, 8-bit unsigned integer. Data byte #1-#4 S.V. Upper Range Value, IEE754 Data byte #5-#8 S.V. Lower Range Value, IEE754

#6 #7 #8

S.V. Lower Range LSB

Command #141 Return S.V. Units, Upper and Lower-Range Values

This command returns the units and values for the Secondary Variable Range Values.

Request data bytes

None

Response data bytes

Data byte #0

Range Units Code #1 S.V. Upper Range MSB

#2 #3 #4

S.V Upper Range LSB

Data byte #0 S.V. Units Code, 8-bit unsigned integer. Data byte #1-#4 S.V. Upper Range Value, IEE754 Data byte #5-#8 S.V. Lower Range Value, IEE754

Page 50 MERCAP – INSTRUCTION MANUAL 7ML19981CM01.1

#5 S.V. Lower Range MSB

#6 #7 #8

S.V. Lower Range LSB

Command #144 Reset Recorded P.V. Max./Min. Values

This command rests the recorded maximum and minimum values for PV back to a start value, in this case, the current PV value.

Request data bytes

None

Return data bytes

None

Command # 145 Read Recorded P.V. Max./Min. Values

This command returns the recorded maximum and minimum values for PV since the last reset command or the last power cycle.

Request data bytes

None

Return data bytes

Data byte #0

Data byte #0 P.V. Units Code, 8-bit unsigned integer Data byte #1-#4 P.V Max. Recorded Value, IEE754 Data byte #5-#8 P.V Min. Recorded Value, IEE754

P.V Range Units Code #1 PV Max Recorded Value MSB

#5 P.V Min. Recorded Value MSB

#2 #3 #4

PV Max Recorded Value LSB

#6 #7 #8

P.V Min. Recorded Value LSB

7ML19981CM01.1 MERCAP – INSTRUCTION MANUAL Page 51

Command #146 Write Ratio Value for Span

This command sets the Span correction level. This is an autocal feature.

Request data bytes

Data byte #0

Span Corr. Level Setting MSB

Data byte #0-3 Span Corr. Level Setting, IEE754

#1 #2 #3

Return data bytes

Data byte #0

Span Corr. Level Setting MSB

Data byte #0-3 Span Corr. Level Setting, IEE754

#1 #2 #3

Command #147 Read Ratio Level for Span

This command returns the Span correction level. This is an autocal feature.

Span Corr. Level Setting LSB

Request data bytes

Data byte #0

Span Corr. Level Setting MSB

Data byte #0-3 Span Corr. Level Setting, IEE754

#1 #2 #3

Command #148 Write Ratio Value for Zero

This command sets the Zero correction level. This is an autocal feature.

Request data bytes

Data byte #0

Zero Corr. Level Setting MSB

Data byte #0-3 Zero Corr. Level Setting, IEE754

#1 #2 #3

Span Corr. Level Setting LSB

Zero Corr. Level Setting LSB

Page 52 MERCAP – INSTRUCTION MANUAL 7ML19981CM01.1

Return data bytes

Data byte #0

Zero Corr. Level Setting MSB

Data byte #0-3 Zero Corr. Level Setting, IEE754

#1 #2 #3

Command #149 Read Ratio Value for Zero

This command returns the Zero correction level. This is an autocal feature.

Request data bytes

None

Return data bytes

Data byte #0

Zero Corr. Level Setting MSB

Data byte #0-3 Zero Corr. Level Setting, IEE754

#1 #2 #3

Zero Corr. Level Setting LSB

7ML19981CM01.1 MERCAP – INSTRUCTION MANUAL Page 53

Appendix B: Tables

Table A

Conversion

Range 0 - 100 %

Range 0 - 100 % Current in

Range 0 - 100 %Range 0 - 100 %

0 4.0 100

5 4.8 95 10 5.6 90 15 6.4 85 20 7.2 80 25 8.0 75 30 8.8 70 35 9.6 65 40 10.4 60 45 11.2 55 50 12.0 50 55 12.8 45 60 13.6 40 65 14.4 35 70 15.2 30 75 16.0 25 80 16.8 20 85 17.6 15 90 18.4 10 95 19.2 5

100 20.0 0

Current in mA

Current in Current in

mA Range 100 - 0 %

mAmA

Range 100 - 0 %

Range 100 - 0 %Range 100 - 0 %

Page 54 MERCAP – INSTRUCTION MANUAL 7ML19981CM01.1

Table B

Total Loop Ω versus Supply Volts

ixed

current

4mA

lowes

current

3.6 mA

highest current 22 mA

total resistance (Ohm)

OPERATION AREA

supply voltage (Vdc)

Table C

Voltage Drop Versus mA For Current Transmitter Operation

V-supply

voltage drop over 250 ohm

measuring resistance

voltage drop over 280 ohm

in barrier voltage drop over blocking diode in barrier

margin c.q voltage drop over instrument

cable

7ML19981CM01.1 MERCAP – INSTRUCTION MANUAL Page 55

operation voltage MST9500

Appendix C: Approvals

CE Certificate

WRITTEN DECLARATION OF CONFORMITY

We,

We,We,

Declare, solely under own responsibility, that the product

Declare, solely under own responsibility, that the productDeclare, solely under own responsibility, that the product

Mentioned in this declaration, complies with the following standards and/or normative

Mentioned in this declaration, complies with the following standards and/or normativeMentioned in this declaration, complies with the following standards and/or normative documents:

documents:

documents:documents:

Requirements

Requirements Remarks

RequirementsRequirements

Environment Commercial, light Industrial and industrial 2008949-KRQ/EMC 01-4232

EN 62326: 1998 Product group standard for “Electrical equipment for measurement, control and laboratory use”, from which:

EN 50011 : 1998 Emission – Class B EN 61000-4-2: 1995 Electrostatic Discharge (ESD) Immunity EN 61000-4-3: 1996 Radiated Electro-Magnetic Field Immunity EN 61000-4-4: 1995 Electrostatic Fast Transient (EFT) Immunity EN 61000-4-5: 1995 Surge Transient Immunity EN 61000-4-6: 1996 Conducted Radio-Frequency Disturbances Immunity

Siemens Milltronics Process Instruments B.V. Nikkelstraat 10 - 4823 AB BREDA - The Netherlands

Capacitance Level and Flow Measurement,

Remarks Certificate No.

RemarksRemarks

Mercap 9500

Certificate No.

Certificate No.Certificate No.

ATEX Directive 94/9/EC Audit Report No 2003068 KEMA 00ATEXQ3047

II 1 GD EEx ia IIC T6…T4

II 1/2 GD EExd [ia] IIC T6…T4

T 100 °C IP 66

EN 50014: 1992 General Requirements EN 50018: 1994 Flameproof Enclosures “d” EN 50020: 1994 Intrinsic Safety “i” EN 50284: 1999 Special Requirements for Category 1G Equipment EN 50281-1-1: 1998 Dust Ignition Proof

The notified body is

The notified body is:

The notified body isThe notified body is

Location

Location: Breda Named Representative

LocationLocation Date

Date: May 28, 2001 Position

DateDate

Note

Note:

: For specific safety specifications, please consult the instrument label.

NoteNote

: N.V. KEMA – Utrechtseweg 310 – 6812 AR Arnhem –The Netherlands

Named Representative: C.S. van Gils

Named RepresentativeNamed Representative Position: Managing Director

PositionPosition

0344 KEMA 00ATEX1096X

0344 KEMA 01ATEX2076X

Page 56 MERCAP – INSTRUCTION MANUAL 7ML19981CM01.1

Certificates and Approvals

The Intrinsical Safety Specifications of the MST9500 have been defined and approved as follows:

Application

Application Specifications

ApplicationApplication

current loop insulated from the measuring circuit 3.6-22 mA internal capacitance can be neglected internal inductance 10 µH maximum supply voltage 30 Vdc maximum current 200 mA maximum power consumption 1.5 W

The MST9500 can be directly connected to an intrinsically safe supply for intrinsically safe applications. For non-intrinsically safe operations, such as explosion proof, a safety barrier must be used.

The operation of the MST9500 conforms to the following:

Specifications

SpecificationsSpecifications

NAMUR recommendation NE 43

This recommendation describes rules with which analogue transmitters transfer their information to D.C.S. equipment. This information can be divided into the following types:

• measurement information and failure signalling

As far as measurement information signal should be in the range of 3.8

• Failure information

Failure information which indicates a failure in the measuring system applies to

Failure information Failure information the current ranges of 0

The application will determine which of these two failure ranges is desirable. The MST9500 can be set for one of them as required.

measurement information is concerned, it is indicated that the current

measurement information measurement information

3.8 to 20.5

20.5 mA

mA.

20.5 20.5

mAmA

21 mA

mA or greater.

21 21

mAmA

0 to 3.6

3.6 mA

0 0

3.6 3.6

3.8 3.8

mA and 21

mAmA

7ML19981CM01.1 MERCAP – INSTRUCTION MANUAL Page 57

Control Drawing FM/CSA Approval Mercap

Page 58 MERCAP – INSTRUCTION MANUAL 7ML19981CM01.1

Index

Abbreviations and Identifications

list........................................................................3

APPLICATIONS

SAMPLES........................................................ 30

Applications Examples.......................................19

Approvals and Certificates

details.................................................................4

Cable

requirements ..................................................26

CATHODICALLY PROTECTED METAL TANKS

APPLICATIONS ..............................................31

Certificates and Approvals

details.................................................................4

CHARACTERISTICS............................................... 8

CHECKS

MAINTAINING MST9500 .............................39

coax cable............................................................. 24

Connection Diagrams .........................................27

Conversion............................................................54

DECLARATION OF CONFORMITY .................... 56

ELECTRODES AND PROCESS CONNECTIONS 7

Examples of Mercap Level Instruments.........10

Factory Settings

details...............................................................29

flange mounting................................................... 22

Flange Standards ................................................17

Flanges..................................................................17

Flanges acc. ANSI Standards...........................23

Flanges acc. DIN Standards ............................. 23

Flow Through Electrode.....................................21

FTF Series .............................................................22

FTF Specifications...............................................23

FTS Series.............................................................21

FTS Specifications ..............................................22

General Design Principals................................... 8

GENERAL TRANSMITTER

INFORMATION ...............................................44

Generic application calculations...................... 19

Handling of Electrodes.........................................7

HART

CONFORMANCE AND COMMAND CLASS

...........................................................................41

DOCUMENTATION........................................ 41

INFORMATION ...............................................41

RESPONSE CODE INFORMATION.............. 44

SETUP.............................................................. 36

Housing ................................................................. 25

Hygienic Level Version.......................................16

Identifications and Abbreviations

list........................................................................3

Installation

information and details................................. 25

Interconnection

supply and cable information...................... 26

INTERFACE LEVEL VERSION.............................15

Intrinsical ................................................................4

Introduction ............................................................ 3

Maintenance

information......................................................39

MCP01 (Standard) S-Series: Threaded

Versions.......................................................... 10

MCP01 (Standard) S-Series: Welded and

Machined Flanged Versions....................... 12

MCP01 Standard D-Series: Machined Flanged

Versions.......................................................... 13

MCP02: Interface Version ................................ 15

MCP03: Sanitary Versions................................. 16

Mercap Configurations........................................ 9

METAL HOUSING

INFORMATION............................................... 25

METAL TANKS

APPLICATIONS ........................................ 30, 31

MST9500

ABOUT THE TRANSMITTER........................24

mini-feature list.............................................. 28

NAMUR recommendation NE43

description........................................................ 4

NON CONDUCTIVE TANKS

APPLICATIONS .............................................. 31

Operating Principles........................................... 24

OVERVIEW

ABOUT THE TRANSMITTER........................24

Plastic Housing

information......................................................25

Pressure and Temperature Considerations ....9

Probe ....................................................................... 5

Process Connection and Seal Configuration of

Mercap.............................................................. 9

Process Connections ........................................... 9

PTFE.......................................................................21

PUSH-BUTTON

SETUP.............................................................. 35

REQUIREMENTS

DETAILS.............................................................5

Safety Grounding

applications .................................................... 32

sandwich connection .........................................21

Seal Types.............................................................. 9

Settings

information......................................................29

SPECIFICATIONS

DETAILS.............................................................5

STANDARD LEVEL VERSION............................ 10

START-UP............................................................. 35

SUPPLEMENTS

ADDITIONAL INFORMATION...................... 54

Supply

requirements ..................................................26

System Earthing

applications .................................................... 30

7ML19981CM01.1 MERCAP – INSTRUCTION MANUAL Page 59

TEST

STARTING WITH HART

.............................39

STARTING WITH THE PUSH-BUTTON...... 39

Test Function

information......................................................39

thermopart ............................................................21

Total Loop.............................................................55

Total Loop Ω Versus Supply Volts................... 55

Transmitter............................................................. 5

OVERVIEW...................................................... 24

SPECIFIC COMMANDS ................................ 47

Vessels Filled with Oil ........................................19

Voltage Drop Versus MA....................................... 55

Wetted Parts .......................................................... 5

Page 60 MERCAP – INSTRUCTION MANUAL 7ML19981CM01.1

*7ML19981CM01*

Milltronics MCP01 S, MCP01 D, MCP03, MCP01 DD, MCP01 SD Instruction Manual

Specifications and Main Features

Frequently Asked Questions

User Manual