ABB 364G Series User manual

InstrumentationIT 2600T Pressure Transmitter family
User’s Manual
364Gx and 364Ax Models
ABB
IM364Gx/Ax

InstrumentationIT 2600T Pressure Transmitter family
Table of Contents
Safety Notes 6
Operator liability 8
Qualified personnel 8
Returning devices 8
Disposal 8
Information on WEEE Directive 2002/96/EC (Waste Electrical and Electronic Equipment) 8
Transport and storage 8
Safety information for electrical installation 8
Safety information for inspection and maintenance 9
Opening the box 11
Identification 11
Nameplate 11
Tag plate 11
Optional Wired on plate (option I2) 12
Handling 12
Storage 12
Installation 13
Preparing for installation 13
Mounting the transmitter 14
Pipe mounting 15
2in Pipe mounting instruction 17
Wall mounting 17
Wall mounting instruction 18
Digital LCD Integral Display positioning 18
Wiring 18
Wiring requirements 19
Protective Earthing 19
Electrical connection 19
Remote Meter wiring 21
Check the installation 22
Apply power 22
Start up 22
Configuration 23
Default configuration 23
Easy Setup 23
HART Configuration 24
Basic Configuration Functions 24
Set the Damping 24
Set the Damping configuration by Digital LCD Integral Display 24
Set the Damping configuration by CoMeter 24
Set the Damping configuration by HHT 24
Set the Damping configuration by PC 24
Set the Units 24
Set the Units by Digital LCD Integral Display 24
Set the Unit by CoMeter/ProMeter 25
Set the Unit configuration by HHT 25
Set the Unit configuration by PC 25
Set the LRV 25
Set the LRV by Local Keys 26
Set the LRV by Digital LCD Integral Display 26
Set the LRV by CoMeter 26
Set the LRV by HHT 26
Set the LRV by PC 26
Set the URV 26
Set the URV by Local Keys 27
Set the URV by Digital LCD Integral Display 27
Set the URV by CoMeter 27
Set the URV by HHT 27
Set the URV by PC 27
Special functions 27
Transfer functions 27
Transfer functions description 28
Linear 28
Polynomial 28
Two Polynomial functions of 2nd order 29
Set the Transfer function on the transmitter 29
Set the Transfer function on the transmitter by Digital LCD Integral Display 29
Set the Transfer function on the transmitter by CoMeter 29

364Ax-Gx Instruction Manual
Set the Transfer function on the transmitter by HHT 29
Set the Transfer function on the transmitter by PC 29
Set the Transfer function on the Meters 29
Set the Transfer function on the Digital LCD Integral Display 30
Set the Transfer function on the Digital LCD Integral Display by HHT 30
Set the Transfer function on the Digital LCD Integral Display by PC 30
Signal simulation (fixed output current) 30
Fixed output current by Digital LCD Integral Display 30
Fixed output current by CoMeter 30
Fixed output current by HHT 30
Fixed output current by PC 30
Hardware settings 31
Write protect mode 31
Change the failsafe direction 31
Software settings 31
Write protect mode 31
Change the failsafe direction 31
Set the Current Output limits 32
Set the Current Output limits on the Digital LCD Integral Display 32
Set the Current Output limits by HHT 32
Set the Current Output limits by PC 32
Operation 33
Digital LCD Integral Display 33
Navigate the Digital LCD Integral Display 33
Digital LCD Integral Display list of menu and submenu functions 33
Digital LCD Integral Display view setting 37
HART Transmitter 38
Accessing Communication data 38
Accessing Communication data by Digital LCD Integral Display 38
Accessing Communication data by CoMeter 39
Accessing Communication data by HHT 39
Accessing Communication data by PC 39
Accessing Operation data 39
Accessing Operation data by Digital LCD Integral Display 39
Accessing Operation data by CoMeter 39
Accessing Operation data by HHT 39
Accessing Operation data by PC 39
Trimming and Calibration Set Up 40
Sensor trim 40
Sensor Zero Trim 40
Sensor Zero trim by CoMeter 40
Sensor Zero trim by HHT 41
Sensor Zero trim by PC 41
Sensor Low Trim 41
Sensor Low trim by Digital LCD Integral Display 41
Sensor Low trim by HHT 41
Sensor Low trim by PC 41
Sensor High trim 41
Sensor High trim by Digital LCD Integral Display 41
Sensor High trim by HHT 41
Sensor High trim by PC 42
Sensor Static trim 42
Static trim by HHT 42
Static trim by PC 42
Calibration 42
Output trimming (Digital to Analog trim) 42
Output trimming by Digital LCD Integral Display 42
Output trimming by CoMeter 42
Output trimming by HHT 42
Output trimming by PC 43
Additional calibration procedures 43
PV scaling 43
PV scaling by Digital LCD Integral Display 43
Set PV scaling by HHT 43
Set PV scaling by PC 43
Removing PV scaling 43
Removing PV scaling by Digital LCD Integral Display 43
Removing PV scaling by HHT 44
Removing PV scaling by PC 44
Zero suppression 44
Zero elevation 44
Reset to Factory trim 44

364Ax-Gx Instruction Manual
Reset to Factory Trim by Digital LCD Integral Display 44
Reset to Factory trim by HHT 45
Reset to Factory trimming by PC 45
Software Write Protect 45
Software Write Protect by Digital LCD Integral Display 45
Software Write Protect by HHT 45
Software Write Protect by PC 45
HART Multidrop mode 45
Maintenance 46
Exterior cleaning 46
Field update 46
Replacement and Troubleshooting 47
Dismantling and reassembly 47
Safety information for Dismantling and Reassembly 47
Dismantling 48
Replacement 49
Electronics replacement 49
Data saving in case of replacement 49
Digital LCD Integral Display installation or replacement 49
Troubleshooting 50
Simple fault finding 50
Transmitter diagnostics 51
Diagnostic messages 51
Diagnostics on the Digital LCD Integral Display (Hart version) 51
Diagnostics on the CoMeter 52
Hart version diagnostics on the HHT 52
Hart version diagnostics on thePC 52
Additional Safety Notes 55
Hazardous Area 55
Certificate groups 56
Power supply operative limits 62
PED information integration 62
IP Protection 63
Declarations 63

364Ax-Gx Instruction Manual
1. INTRODUCTION
Instruction Manual Structure
The present manual provides info rmation on insta lling, operating, trou bleshooting the 364 pre ssure
transmitter. Every section of the present manual it is specifically dedicated to the specific phase of the
transmitter lifecycle starting from the receipt of the transmitter and its identification, passing to the installation,
to the electrical connections, to the configuration and to the troubleshooting and maintenance operations.
Worldwide Service Support Centers
ABB instrumentation products are supported worldwide by the loc al ABB Instrumentation branches. In case
you fail to get in touch with your c ountry ABB Instrumentation office you may want to get in touch with one of
the following center of excellence for ABB Pressure products.
ABB SpA
Via Statale 113
22016 Lenno (Co) – Italy
Tel: [phone]
Fax: [phone]
ABB Automation Product GmbH
Schillerstrasse 72
D-32425 Minden – Germany
Tel: [phone]
Fax: [phone]
ABB Inc.
125 E. County Line Road
Warminster, PA 18974 – USA
Tel: [phone]
Fax: [phone]
ABB Inc.
3450 Harvester Road
Burlington, Ontario L7N 3W5 – Canada
Tel: [phone]
Fax: [phone]
ABB Ltd.
14 Mathura Road
121003 Faridabad, Haryana – India
Tel: [phone]
Fax: [phone]
ABB (China) Ltd.
35/F Raffles City (Office Tower)
268 Xizang Zhong Zu, 200001 Shangai – China
Tel: [phone]
Fax: [phone]

364Ax-Gx Instruction Manual
6
Safety Notes
General Safety Information
The "Safety" sectio n provides an ove rview of the safety aspects to be ob served for
operation of the device.
The device has been constructed in accordance with th e state of the art and is
operationally safe. It has b een tested and left the factory in pe rfect working conditions.
The information in the manual, as well as the applicable documentation and certificates,
must be observed and followed in order to maintain this condition throughout the period
of operation. Full compli ance with the general safety requirements must be observed
during operation of the d evice. In ad dition to the general information, the individual
sections in the manual contain descriptions of processes or procedural instructions with
specific safety information.
Only by observing all of the safety informati on you can reduce to the minimum the risk of
hazards for personnel and/or environment.
These instructions are intended a s an overview and do not contai n detailed information
on all availa ble models or every co nceivable event that may occu r during setup,
operation, and maintenance work.
For additional information, or in the event of specific problems not covered in detail by
these operating instructions, please contact the manufacturer. In addition, ABB declares
that the cont ents of this manual are not part of any prior or existing agreements,
commitments, or legal relationships; nor are they intended to amend these.
All obligations of ABB arise from the conditions of t he relevant sales agreement, which
also contains the solely binding warranty regulations in full. The se contractual warranty
provisions are neither extended nor limited by the information provided in this manual.
Caution – Risk
Only qualified and autho rized specialist personnel should be charged with installation,
electrical connection, commissioning, and maintenance of the transmitter.
Qualified personnel are persons who have experience in in stallation, electrical wiring
connection, commissioning, and operation of the transmitter or similar devices, and hold
the necessary qualifications such as:
• Training or instruction, i.e., authorizati on to operat e and mainta in devices or system s
according to safety engineering standards for electrical circuits, high pressures, and
aggressive media
• Training o r instruction in accordance with safety enginee ring standards regarding
maintenance and use of adequate safety systems
For safety reas ons, ABB draws your attention to the fac t that only s ufficiently insulated
tools conforming to DIN EN 60900 may be used.
Since the transmitter may form part of a safety chain, we reco mmend replacing the
device immediately if any defects are detected.
In case of use in H.A. Non sparking tools only must be employed.
In addition, you must observe:
• The releva nt safety reg ulations regarding the installation and operation of electri cal
systems, e.g., German legal regulations governing technical tools, §3
(Gerätesicherheitsgesetz: German Equipment Safety Act)
• The relevant standards, e.g., DIN 31 000/VDE 1000
• The reg ulations and guidelines relating to explosion protection, if explosion -proof
transmitters have to be installed.
Warning - General risks
The device can be operated at high levels of pressure and with aggressive media.
As a result, serious injury or significant property damage may occur if thi s device is
operated incorrectly.

364Ax-Gx Instruction Manual
7
Improper use
It is prohibited to use the device for the following purposes:
• As a climbing aid, e.g., for mounting purposes
• As a support for external loads, e.g., as a support for pipes, etc.
• Adding material, e.g., by painting over the name plate or welding/soldering on parts
• Removing material, e.g., by drilling the housing.
Repairs, alterations, and enhancements, or the installation of replacement parts, are only
permissible as far as thes e are described in the manual. Approval by ABB must be
requested for any ac tivities beyond this scope. Repairs performed by ABB-authoriz ed
centers are excluded from this.
Technical limit values
The device is desig ned for use exclusively within the values stated on the na me plates
and within the technical limit values specified on the data sheets.
The following technical limit values must be observed:
• The Maximum Working Pressure may not be exceeded.
• The Maximum ambient operating temperature may not be exceeded.
• The Maximum process temperature may not be exceeded.
• The housing protection type must be observed.
Warranty provisions
Using the device in a manner that do es not fall within the scope of its inte nded use,
disregarding this manu al, using un der-qualified personnel, or making unauthorized
alterations, releases the manufacturer from any lia bility for any resulting damage. This
makes the manufacturer's warranty null and void.
Plates and symbols
Danger – <Serious damage to health/risk to life>
The appearance of either of these symbols next to the "Danger" warning indicates that an
imminent risk is present. Failure to avoid this will result in death or serious injury.
Warning – <Bodily injury>
The appearance of this symbol next to "Warning" indicates a potentially dangerous
situation. Failure to avoid this could result in death or serious injury.
Caution – <Minor injuries>
The appearance of thi s symbol n ext to "Caution" indicates a potentially dang erous
situation.
Failure to avoid this coul d result in minor injuries. This may al so be used fo r property
damage warnings.
Attention – <Property damage>
This symbol indicates a potentially damaging situation. Failure to avoid this could result in
damage to the product or its surrounding area.
Important
This symbol indicates operator tips or particularly useful information. It does not indicate a
dangerous or damaging situation.

364Ax-Gx Instruction Manual
8
Operator liability
Prior to using corrosive and abrasive materials for measurement purposes, the operator
must check the level of resistance of all parts coming into contact with the materials to be
measured.
ABB will gladly support you in selecting the mate rials, but cannot accept any liability in
doing so.
The operators must strictly observe the appl icable national regu lations with regard to
installation, function tests, repairs, and maintenance of electrical devices.
Qualified personnel
Installation, commissioning, and mai ntenance of the device may only be p erformed by
trained specialist personnel who have been authorized by the plant o perator. The
specialist personnel must have rea d and understood the manu al and co mply with its
instructions.
Returning devices
Use the original packaging or suitably se cure shipping package if you need to return the
device for repair or recalibration purposes. Fill out the return form (see the Appendix) and
include this with the device.
According to EC guidelin es for ha zardous materials, the own er of hazardou s waste is
responsible for its dispo sal or must observe the following re gulations for shippin g
purposes:
All devices sent back to ABB must be f ree from any hazardous materials (acids, alkalis,
solvents, etc.).
Disposal
ABB actively promotes environm ental awareness and has an operational management
system that meets the requirements of DIN EN ISO 900 1:2000, EN ISO 1 4001:2004,
and OHSAS 18001. Our products and solutions are intended to have minimum impact on
the environment and persons during manufacturing, storage, transport, use and disposal.
This includes the environmentally friendly use of natural resources. ABB conducts an
open dialog with the public through its publications.
This product/solution is manufactured from materials that can be reused by specialist
recycling companies.
Information on WEEE Directive 2002/96/EC (Waste Electrical and Electronic Equipment)
This product or sol ution is not subject to the WEEE Directive 2002/96/EC or
corresponding national laws (e.g., the ElektroG (Electrical and Electronic Equipment
Act) in Germany).
Dispose of the product/sol ution directly at a specialist re cycling facility; do not use
municipal garbage collection points for this p urpose. According to the WEEE
Directive 2002/96/EC, only products used in private applications may be disposed of
at municipal garbage facilities. Proper disposal prevents negative effects on people
and the environment, and supports the reuse of valuable raw materials.
If it is not possible to di spose of old equipment properly, ABB can accept and
dispose of returns for a fee.
Transport and storage
• After unpacking the pressure transmitter, check the device for transport damage.
• Check the packaging material for accessories.
• During inte rmediate storage or transport, store the pressure transmitter in the origi nal
packaging only.
For information on pe rmissible ambient conditions for stora ge and tran sport, see
"Technical data". Although there i s no limit on the duration of storage, the warranty
conditions stipulated on the order acknowledgment from the supplier still apply.
Safety information for electrical installation
Electrical connections may only be establi shed by authori zed specialist personnel in
accordance with the electrical circuit diagrams.
The electrical connection information in the m anual must be observed; otherwise, the
applicable protection type may be affected.
Ground the measurement system according to requirements.

364Ax-Gx Instruction Manual
9
Safety information for inspection and maintenance
Warning – Risk to persons
There is no EMC protection or protection against accidental contact when the housing
cover is open. There are electric circuits within th e housing which are dangerous if
touched. Therefore, the auxiliary power must be switched off before opening the housing
cover.
Warning – Risk to persons
The device can be ope rated at high pressure and with aggressive media. Any medium
that squirts out can cause severe injuries.
Depressurize the pipeline/tank before opening the transmitter connection.
Corrective maintenance work may only be performed by trained personnel.
• Before removing the device, depressurize it and any adjacent lines or containers.
• Check whether hazardous materials have be en used as materials to b e measured
before opening the device. Residual amounts of hazardous substances may still b e
present in the device and could escape when the device is opened.
• Within the scope of operator responsibility, check the following as part of a regular
inspection:
− Pressure-bearing walls/lining of the pressure device
− Measurement-related function
− Leak-tightness
− Wear (corrosion)

364Ax-Gx Instruction Manual
10
Transmitter components overview
1. Transmitter
2. Plastic plug
3. Blind cover
4. Cover gasket
5. Window cover
6. Digital LCD Integral Display
7. Terminal block with electronics
8. Internal grounding screw
9. Terminal block link
10. Digital LCD Display connector
11. Terminal block screws
12. Cover locking screw
13. Bracket
14. Tool set for pipe mounting
15. Tool set for wall mounting
DPT 364
PV psi
mA
12.006
mA
%50 %
0.00290
Variable 1
Variable 2
Bar variable
Tag
units
Menu start
DPT 364
PV psi
mA
12.006
mA
%50 %
0.00290
Variable 1
Variable 2
Bar variable
Tag
units
Menu start
11
1
2
3
4
5
6
7
8
9
10
12
13
14
15
14
14
14
14
15
15
- Digital LCD display view -
NOTE:
The maximum value that the LCD can
display is limited to ± 9999999.
The decimal point is positioned
automatically so that the maximum value
can be displayed as a seven-figure value.
Example of positioning the decimal
point:
Setting 0 … 10000.0 – in this case even
smaller values are only displayed with one
decimal digit.

364Ax-Gx Instruction Manual
11
Opening the box
Transport and storage
• After unpacking the pressure transmitter, check the device for transport damage.
• Check the packing material for accessories.
• During intermediate storage or transport, store the pressure transmitter in the original packaging only.
For information on pe rmissible ambient conditions for storage and transport, see "Te chnical data". T he
storage time is indefinite, however, the warranty conditions stipulated in the order confirmation of the supplier
are valid.
The transmitter package includes:
 The transmitter
 An envelope including the instruction manual and the calibration report
 3 mm Allen key
 Optional content depending on the selected options:
 Bracket kit
 Electrical connection blind plug
Identification
The instrument is identified by the data plates.
Nameplate
The Nameplate provides information concerning the model cod e number, maximum working
pressure, range and span limits, power supply and output signal. See code/ specification sheet for
detailed information. This plate also shows:
 the transmitter serial number (please refer to this number in making inquiries)
 the specific details of the transducer (diaphragms material, fill fluid, range limit and identification
number)
 the Safety Hazardous Area details (see the specific paragraph in this manual)
Tag plate
An additionally Tag plate, welded to the instrument, provides
the customer tag number and the calibrated range.
This plate includes also the code of transmitter with relevant
options and the special request code (if any).

364Ax-Gx Instruction Manual
12
Optional Wired on plate (option I2)
Whenever the transmitter has been ordered with the
option I2, a wired on SST plate with 4 lin es, 32
characters per line will be supplied. The plate will be
wired on the instrument with a SST wire.
Handling
The instrument does not require any special precautions during handling although normal good practice
should be observed.
Storage
The instrument does not require any special treatment if sto red as dispatched and within the specified
ambient conditions (Type 2 to ANSI/ASME N45.2.2-1978).
There is no limit to the storage period, although the terms of guarantee remain as agreed with the Company
and as given in the order acknowledgement.

364Ax-Gx Instruction Manual
13
Installation
Read carefully these installation instructions before proceeding. Failure to observe the warnings and
instructions may cause a malfunction or personal hazard.
WARNING !
Before you begin read “Safety” on page 3.
As already specified in t he Safety Notes th e installation must only be carried out by suitably trained
personnel and in accordance with the information given. Any deviation from these instructions, will transfer
the complete liability to the user.
It is not recommended to install the transmitter and leave the cover open or the electical input without the
appropriate plugs. Water penetration can damage the electrical circuit.
General
.
Preparing for installation
Before installing the pressure transmitter, check whether the model meets the measurement and safety
requirements of the measuring point. This applies for:
• Measuring range
• Overpressure stability
• Temperature
• Explosion protection
• Operating voltage
The materials must be checked to ensure compatibility with regard to their resistance to the media.
This applies for:
• Gaskets
• Process connections, etc.
In addition, the relevant directives, regulations, standards and accident prevention regulations
must be observed. (e.g., VDE/VDI 3512, DIN 19210, VBG, Elex V, etc.).
Measurement accuracy is largely de pendent on correct installation of the pre ssure transmitter and, if
applicable, the related m easuring tube. The m easuring setup should be as free as possible of critical
ambient conditions such as major temperature variations, vibration or shock.
Note
If unfavorable ambient condition s cannot be avo ided owing to rea sons related to bu ilding structure,
measuring requirements or other reasons, this may influence the measurement quality.
If a pressure sensor with capillary tube is installed, observe also the related data sheets.
Pressure transmitter
The transmitter can be connected directly to the shu t-off valve. There is also a mounting bracket for wall or
pipe installation (2” pipe) available as an accessory.
The pressure transmitter should be installed so that the di splay and control unit are a ccessible during
installation and connection, as well as retrofitting.
The transmitter should be installed preferably in a vertical position to avoid subsequent zero shift corrections.
Note
In case of an oblique installation and depending on the measuring range, the fill fluid exerts a hydrostatic
pressure on the measuring diaphragm, resulting in a zero shift. The zero point must then be adjusted.
In general, the pressure transmitters can be used in any mounting position. It is installed according to the
same guidelines as a manometer

364Ax-Gx Instruction Manual
14
Mounting the transmitter
Testing Impulse piping
To ensure proper proper pipe laying, the following points must
be observed:
• Keep the impulse piping as short as possible and avoid
sharp bends.
• Route th e impulse piping so that no deposits can
accumulate. Angles of inclination should
not be less than 8 % ascending or descending.
• The impu lse piping should be blown through with
compressed air or better yet flushed
through with the measuring medium before connection.
• Completely bleed the impulse piping if the medium is a fluid.
• Lay the impulse piping so that gas bubbles (when measuring
fluids) or co ndensate (when measuring gases) can flow
back into the process line.
• When measuring steam, make sure that hot steam cannot
flow back int o the pro cess connection (hydraulic seal, e.g., a siphon is filled with water b efore
installation).
• Check the tightness of the connection. or calibration input, and provide space for the housing cover
to be removed for electrical wiring and maintenance
Sealing and screwing in
Connecting pin G ½ B:
For sealing, a flat gasket must be used in accordance with DIN EN 837-1.
NPT threaded connector:
Seal the threads with Tape or another approved, resistant sealant.
Reference to atmosphere for 364Gx
For technical reasons it is necessary to apply atmospheric pressure to
the reference side of the pressure sensor.
For this purpose there is a ventilation aperture at the outside of the
sensor which is protected by a PTFE filter.
Make sure that the ventilation opening is not covered
(e.g., do not paint over or wet with silicon oil containing fluids etc.) A
coating results in measuring errors!
NOTE: In addition, consider the need o f a testing or calib ration input,
and provide space for the housing cover to be removed for electrical
wiring and maintenance.
WARNING !
Process leaks may cause harm or result in death. Install and tighten process connectors and all accessories
(including manifolds) before applying pressure.
In case of toxic or other dangerous process fluid, take all precautions as recommended in the relevant
Material Safety Data Sheet when draining or venting.
Use only a 12 mm (15/32 “) hexagonal spanner to tighten the bracket bolts

364Ax-Gx Instruction Manual
15
Pipe mounting
In this chapter you can find some suggestions for pipe mounting. These suggestions shall not limit
alternative solutions that the end user can define himself.
Horizontal pipe
Vertical bracket
Transmitter on the front
Horizontal pipe
Horizontal bracket
Transmitter on up
Vertical pipe
Horizontal bracket
Transmitter on the front

364Ax-Gx Instruction Manual
16
Vertical pipe
Horizontal bracket
Transmitter on up
Vertical pipe
Horizontal bracket
Transmitter on the front
Vertical pipe
Horizontal bracket
Transmitter on up

364Ax-Gx Instruction Manual
17
Horizontal pipe
Vertical bracket
Transmitter on up
Horizontal pipe
Vertical bracket
Transmitter on side (parallel)
2in Pipe mounting instruction
1. Fix the bracket
c in the defined position
on the pipe using the tool
d and the
adapter
e to guarantee the best
mechanical performances of the
assembly
2. Tight the nuts
f with the washers g
below them in order to fix the bracket (the
torque value shall be 10 Nm - 12 Nm)
Fix the Pressure transmitter using the two
screws h in the package; (the torque value
shall be 1 Nm ± 0.2 Nm)
Wall mounting
In this chapter you can find suggestions for wall mounting. These suggestions shall not limit alternative
solutions that the end user can define himself.
cd
e
f
f
h
h
g
g

364Ax-Gx Instruction Manual
18
Wall mounting
Vertical bracket
Wall mounting instruction
1. Fix the bracket
c at the wall in the
final position
2. Connect the instrument interface
using the two long screws
d and
bolts
e in the package (the torque
value shall be between 10 Nm and
12 Nm)
3. Fix the Pressure transmitter
f using
the two short screws
g in the
package (the torque value shall be 1
Nm ± 0.2 Nm)
The use of the washers as indicated in the
picture is strongly reccomended
Digital LCD Integral Display positioning
In case the optional i ntegral display meter is
installed, it is possibl e to mount the display in fo ur
different positions rotated clockwise or counter-
clockwise with 90° steps.
This is possible by using one of the four connections
located on the ba ck of t he display at a 90 ° angle
each from the other.
Wiring
HART hand-held communicator can be connected at any wiring termination point in the loop, the minimum
restistance provided must be 250 ohm. If this is less than 250 ohm, additional resistance should be added to
allow communication.
c
d
e
f
g
d
eg

364Ax-Gx Instruction Manual
19
Wiring requirements
For signal / power connection use twisted, stranded pairs of wiring no 18 to 22 AWG / 0.8 to 0.35 mm2 Ø up
to 5,000 feet (1 500 meters). Longer loops require larger wire.
If a shielded wire is used the shield should be grounded only at one end, not b oth ends. In case of wiring at
transmitter end, use the terminal located inside the housing marked with the symbol:
Protective Earthing
Wire this ground connection marked with the symbol to a suitable earth ground.
For a transmitter measuring loop an earth ground should maintain a resistance of 5 ohms or less.
Use a heavy conductor, at least 15 AWG / 1,6 mm2 Ø
WARNING !
A protective grounding connection is absolutely necessary to ensure personnel protection, to protect against
surge and to prevent explosions in potentially explosive atmosphere.
WARNING !
The surge protection is always present and if the transmitter is installed in a Hazardous classified location, it
must be powered from a voltage source isolated from mains (galvanic separation). Furthermore the potential
equalization for the entire powering cable must be guaranteed since the intrinsic safety circuit of the
transmitter is grounded.
Electrical connection
WARNING !
Do NOT make any electrical connections unless the electrical code designation stamped on the transmitter
data plate agrees with the classification of the area in which the transmitter is to be installed. Failure to
comply with this warning can result in fire or explosion.
Hazardous
(Classified)
Location
Unclassified
Hazardous
Location

364Ax-Gx Instruction Manual
20
The relevant guidelines must be observed during the electrical installation!
The electrical connection may only be performed by authorized specialists according to the
electrical plans. Comply with electrical connection information in the manual. Otherwise, the elect rical
protection can be affected.
The 4 to 2 0 mA output signal and the dc power supply to the transmitter are carried from the same pairs of
wires. The supply voltage at the transmitter terminals must be between the limits of 10.5 and 42V dc.
For intrinsically safe approval Ex ia supply must not exceed 30 Vdc. In some countrie s the maximum power
supply voltage is limited to a lower value.
WARNING !
Electrical shock can result in death or serious injury. Avoid contact with the leads and terminals. High voltage
that may be present on leads can cause electrical shock.
Follow these steps to wire the transmitter:
1. Remove the red temporary plastic plug from one of the two electrical connection ports located at both
sides on the top part of the transmitter housing
2. These connection ports have a ½ inch internal NPT or CM20 x 1.5 mm threads. Various adaptors and
bushings can be fitted to these threads to comply with plant wiring (conduit) standards.
3. Remove the housing cover.
WARNING !
In an Explosion-Proof/Flame-Proof installation, do not remove the transmitter covers when power is applied
to the unit. Remove the power supply and continue the operation
4. Run wires through the open port
5. Connect the positive lead to the + terminal, and the negative lead to the - terminal
WARNING !
Note: Do not connect the power across the test terminals. Power could damage the diode in the test
connection.
Plug and seal the electrical ports. Make sure that when the i nstallation has been completed, the electrical
ports are properly sealed against entry of water and corrosive vapors and gases.
WARNING !
Cables, cable gland and unused port plug must be in accordance with the intended type of protection (e.g.
intrinsically safe, explosion proof, etc.) and degree of protection (e.g. IP6x or NEMA 4x). In particular, for
explosion proof installation, plug the unused opening with a plug certified for explosion containment.
6. If applicable, install wiring with a drip loop. Arrange the drip loop so that the bottom is lower than the
conduit connections and the transmitter housing.
7. Place the housing cover, screw it to fit O-ring into the housing and then continue to hand tighten until
the cover touch the housing metal-to-metal. In Ex d (Explosion Proof) installation, lock the cover rotation
by turning the set nut (use the 3 mm Allen key supplied with the instrument).
8. Replace the temporary red plastic plug on the second electrical connection port located in the upper
part of the transmitter housing with the appropriate plug depending on the certification requirement or
degree of protection (e.g. IP6x or NEMA 4x)
For further information find the rel evant instruction manuals searching for t he keyword “IM/*36* ” on
www.abb.com or from local ABB representatives.