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6

 

 

2.

 

Current

 

Loop

 

Connection

 

 

a.

 

Making

 

Connections

 

The

 

MS2901E

 

current

 

loop

 

connection

 

wiring

 

enters

 

the

 

transmitter

 

through

 

the

 

1/2"

 

female

 

NPT

 

conduit

 

port

 

shown

 

in

 

Figure

 

4

 

below.

 

Please

 

refer

 

control

 

drawing

 

for

 

wiring

 

and

 

Terminal

 

identification.

 

 

CAUTION:

 

When

 

used

 

in

 

a

 

hazardous

 

area,

 

the

 

conduit

 

or

 

cable

 

connections

 

must

 

be

 

made

 

in

 

such

 

a

 

way

 

that

 

all

 

hazardous

 

area

 

requirements

 

are

 

met.

 

Cable

 

Glands

 

and

 

blanking

 

plugs

 

must

 

be

 

certified

 

for

 

protection

 

types

 

‘Ex

 

db’

 

or

 

’tb’

 

and

 

it

 

should

 

be

 

rated

 

for

 

IP66.

 

ATTENTION

:

 

Lorsqu'ils

 

sont

 

utilisés

 

dans

 

une

 

zone

 

dangereuse,

 

les

 

connexions

 

des

 

conduits

 

ou

 

des

 

câbles

 

doivent

 

être

 

réalisées

 

de

 

manière

 

à

 

ce

 

que

 

toutes

 

les

 

exigences

 

relatives

 

aux

 

zones

 

dangereuses

 

soient

 

satisfaites.

 

Les

 

presse

‐

étoupes

 

et

 

les

 

obturateurs

 

doivent

 

être

 

certifiés

 

pour

 

les

 

types

 

de

 

protection

 

«Ex

 

db»

 

ou

 

«tb»

 

et

 

doivent

 

être

 

classés

 

IP66.

 

 

 
 

Probe

 

Connector

 

Stem

 

or

 

Probe

 

Cable

 

 
 

 

 

 

 

1/2”

 

FNPT

 

Conduit

 

Port

 

for

 

Field

 

Wiring

 

Entry

 

Figure

 

4.

  

MS2901E

 

current

 

Loop

 

Connector

 

 

The

 

maximum

 

permissible

 

length

 

of

 

the

 

current

 

loop

 

wiring

 

between

 

the

 

MS2901E

 

Transmitter

 

and

 

the

 

control

 

system

 

is

 

determined

 

by

 

the

 

control

 

system

 

supply

 

voltage,

 

the

 

electrical

 

resistance

 

of

 

the

 

current

 

loop

 

cable

 

and

 

the

 

load

 

of

 

the

 

control

 

system

 

input.

  

If

 

the

 

Transmitter

 

is

 

to

 

be

 

installed

 

in

 

a

 

safe

 

area,

 

refer

 

to

 

section

 

c.

 

Wiring

 

for

 

a

 

Safe

 

Area

 

Installation

 

for

 

details.

  

If

 

the

 

Transmitter

 

is

 

to

 

be

 

installed

 

in

 

a

 

hazardous

 

area,

 

refer

 

to

 

section

 

d.

 

Wiring

 

for

 

a

 

Hazardous

 

Area

 

Installation

.

 

 

b.

 

Grounding

 

 

The

 

MS2901E

 

enclosure

 

is

 

grounded

 

internally

 

through

 

the

 

wiring

 

harness,

 

but

 

an

 

additional,

 

external

 

grounding

 

terminal

 

is

 

provided

 

as

 

well.

  

The

 

enclosure

 

should

 

be

 

grounded

 

properly

 

using

 

the

 

external

 

grounding

 

terminal

 

to

 

ensure

 

safe

 

operation.

 

 

c.

 

Wiring

 

for

 

a

 

Safe

 

Area

 

Installation

 

 

 

For

 

basic

 

safe

 

area

 

wiring

 

information

 

refer

 

to

 

the

 

circuit

 

diagram

 

shown

 

on

 

page

 

19.

 

Use

 

the

 

following

 

equation

 

to

 

determine

 

maximum

 

permissible

 

cable

 

length:

 

 

𝐷

𝑉

10

4

∗

10

𝑅

 

 
 

Содержание MS2901E

Страница 1: ...0mA HART Transmitter Operator s Manual Metal Samples Company A Division of Alabama Specialty Products Inc 152 Metal Samples Rd Munford AL 36268 Phone 256 358 4202 Fax 256 358 4515 E mail msc alspi com...

Страница 2: ......

Страница 3: ...T at Hazardous locations 9 3 Setup and Operation 10 a Probe Selection Switches 10 b Testing the Current Loop 11 i Calibration 11 ii Testing loop output zero 4mA and span 20mA 12 iii Testing the MS2901...

Страница 4: ......

Страница 5: ...S2901E to be mounted independently from but in close proximity to the ER probe It is then connected to the probe via a short probe cable See page 5 for mounting diagrams and specifications B Principle...

Страница 6: ...faster to corrosion events and upsets compared to traditional ER meters At 16 bit resolution the MS2901E can measure metal loss amounts as small as 0 0015 of the probe life Metal loss readings taken b...

Страница 7: ...20mA without alarm 22 5mA with alarm Electrical Connection NPT entry with Ex Gland or other entries are available withadaptors Maximum Probe Cable Distance 30 ft 9 1 m Output Data Output Signal 4 20m...

Страница 8: ...el d utilisation pour les instructions d installation et les param tres d entr e et de sortie lectriques maximum Installation of the MS2901E Transmitter involves the following steps 1 Physical Mountin...

Страница 9: ...be and for foreign material in the female sockets of the transmitter connector Gently straighten any bent pins and clear any foreign material that may be found Align Key Insert Connector Tighten Coupl...

Страница 10: ...r Stem or Probe Cable 1 2 FNPT Conduit Port for Field Wiring Entry Figure 4 MS2901E current Loop Connector The maximum permissible length of the current loop wiring between the MS2901E Transmitter and...

Страница 11: ...communicate with the computer in a safe area Connect the modem across 250 Ohms resistor in line with current loop supply as shown in figure Any certified handheld terminal can be connected to the curr...

Страница 12: ...4 20 mA current loop per standard practice The voltage shall be maintained all the time in accordance with the guidance given in IEC 60079 14 Caution In general Safety barriers are not necessary but w...

Страница 13: ...m voltage applied to the instrument should be below or equal to Um 28 V Any certified handheld terminal can be connected to the current loop supply of the instrument to communicate and access the vari...

Страница 14: ...cation of the current loop connection and DCS program Figure 5 Connector and Switch Details Setting Switch 1 Switch 2 Switch 3 Switch 4 Operating Positions Wire Loop Off On On Off Tube Loop Flush On O...

Страница 15: ...oggle will increase loop current by 0 025mA h To decrease the loop current in steps of 0 025 mA toggle the Switch 3 to Up and Down Each Toggle will decrease loop current by 0 025mA i Ensure current re...

Страница 16: ...e probe extension cable from the probe 3 Connect the Meter Prover to the MS2901E probe connector stem or to the probe extension cable if the MS2901E is remote mounted 4 Loosen the MS2901E Enclosure Lo...

Страница 17: ...fe can be found in Table 1 and is also listed on the Metal Samples probe tag as the Multiplier Figure 6 Metal Samples Probe Tag Figure 7 illustrates the relationship between Loop Current and Metal Los...

Страница 18: ...nterval that is too long may give results that are insensitive to system upsets The ideal time period depends on many factors and will vary from system to system It may take some trial and error to se...

Страница 19: ...urrent Current values are shown in the table below Direction Values percent of range Values mA or V Linear over range Down 0 6 0 1 3 89 to 3 92 mA Up 105 0 1 0 20 64 to 20 96 mA Device malfunction ind...

Страница 20: ...is in good condition Then thread the enclosure lid onto the base fully Once the lid has been threaded into place tighten the Lock Screw to prevent unauthorized tampering Figure 10 Enclosure Lock Scre...

Страница 21: ...ry Annually Inspect the probe connector o ring for any signs of damage Replace as necessary Annually Inspect all electrical connections for signs of corrosion mechanical damage or foreign matter that...

Страница 22: ...AIBLES One Device Variable is implemented Meaning Units DV Loop Current mA DYNAMIC VARIABLES One Dynamic Variable is implemented Meaning Units PV Metal Loss mils 1 Power Up On power up the transmitter...

Страница 23: ...t 4 More Status Available is set whenever any failure is detected Byte Bit Description Class Device Status bits Set 0 0 PV out of Limits 1 Not Used 2 Analog Output Saturated 3 Analog output Current Fi...

Страница 24: ...Set 6 0 Not Used 1 Not Used 2 Not Used 3 Not Used 4 Not Used 5 Not Used 6 Not Used 7 Not Used Device Operating Mode Not used bits are always set to 0 Byte Bit Description Class Devie Status bits Set 7...

Страница 25: ...Dynamic Variable class 9 Read Dynamic Variable with Status 11 Read UID Associated with Tag 12 Read Message 13 Read Tag Descriptor Date 14 Read Transducer Information 15 Read Device Information 16 Read...

Страница 26: ...set Device 44 Write PV Units 45 Trim Loop Zero 46 Trim Loop Gain Fixed Current Mode Fixed current mode is implemented using Command 40 This mode is cleared by power loss or reset Burst Mode This field...

Страница 27: ...193 Read probe Life 195 Enter Access Password 196 Write New Access Password 197 Disable Password 198 Write Alarm Mode 199 Read Alarm Mode 200 Write HART Serial Number 201 Write Serial Number 202 Read...

Страница 28: ...nd Specific Response Code Code Class Description 0 Success No Command Specific Errors 7 Error Write Protection 11 Error Entered Value not Valid Command 191 Read Probe Type This command allows the mast...

Страница 29: ...ific Response Code Code Class Description 0 Success No Command Specific Errors 5 Error Too few Data bytes Received 7 Error Write Protection 11 Error Entered Value not Valid Command 193 Read Probe Life...

Страница 30: ...te Format Description None Unsigned Char 8 As ASCII Password Command Specific Response Code Code Class Description 0 Success No Command Specific Errors 5 Error Too few Data bytes Received 16 Error Acc...

Страница 31: ...e Command 197 Disable Password This command allows the master to reset disable the password entry Request Bytes Byte Format Description 0 Unsigned Char 1 As ASCII Disable Password 0 Password access Le...

Страница 32: ...Format Description 0 Unsigned Char Alarm Mode Command Specific Response Code Code Class Description 0 Success No Command Specific Errors 5 Error Too few Data bytes Received 7 Error Write Protection N...

Страница 33: ...Number First 3 bytes consists of serial number and 4th byte consists of hardware revision level Level 2 password entry is required Request Bytes Byte Format Description 0 3 Unsigned Char HART Serial N...

Страница 34: ...ber Command Specific Response Code Code Class Description 0 Success No Command Specific Errors 5 Error Too few Data bytes Received 7 Error Write Protection Note Default Value Command 202 Read MS Seria...

Страница 35: ...fic Response Code Code Class Description 0 Success No Command Specific Errors 5 Error Too few Data bytes Received 7 Error Write Protection Command 204 Read Commission Date This command allows the mast...

Страница 36: ...password entry is required Request Bytes Byte Format Description Change Parameters to Factory Defaults Response Bytes Byte Format Description Change Parameters to Factory Defaults Command Specific Re...

Страница 37: ...ar as an RS 232 com port to Windows and your HART software A rugged design makes MicroLink an ideal choice for field engineers and technicians who service HART devices in an industrial environment Mic...

Страница 38: ...r to uninstall the driver from your system With the modem connected to the USB port locate the MicroLink modem in the Device Manager hardware tree under Ports COM LPT Right click on MicroLink HART Pro...

Страница 39: ...the window Unplug the MicroLink modem from the USB port and then reconnect it to allow Windows to update the USB device parameters Click OK again to close the Properties window d Software setup Make...

Страница 40: ...36 MicroLink HART modem connected across the HART device MicroLink HART modem connected across the HART device...

Страница 41: ...robe being used Confirm the probe type and refer to Table 2 on page 9 to verify the appropriate switch settings 3 Perform a visual inspection of the circuit boards to look for any signs of mechanical...

Страница 42: ...ntrol B Obtaining Service and Returning the Instrument for Repair If you experience problems with your instrument please contact the factory at 256 358 4202 and ask for customer support for instrument...

Страница 43: ...wn Contact Information for Repair Contact Name Company Phone Number E mail Address Return Shipping Information Recipient Name Company Return Address If different than above Reason for Return Provide a...

Страница 44: ...vision Date Changes 0 10 23 20 Initial Release A 01 14 2021 Comments in French corrected B 09 28 2021 Updated Switch Settings HART Modem and DD file info added C 04 25 2022 Updated HART DD details D 0...

Страница 45: ...41 Appendix B Hazardous Area Certification Details...

Страница 46: ...42...

Страница 47: ...43...

Страница 48: ...44...

Страница 49: ...45...

Страница 50: ...46...

Страница 51: ...47...

Страница 52: ...48 Appendix C Drawings A Wiring Diagrams Control Drawing Hazardous Area Wiring Diagram...

Страница 53: ...01E MS2951E HIGH RESOLUTION ER 4 20mA TRANSMITTER F 2 3 V V J2 J2 S1 2 1 S1 J2 ER Probe Simple Device Sold Separately OR Probe Cable Assembly Sold Separately ER Probe Simple Device Sold Separately CN2...

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