Azbil PTG71 User manual

Smart Pressure Transmitter
Model PTG71/72
User’s Manual
CM2-PTG300-2001

Copyright, Notices and Trademarks
© 2002-2019 Azbil Corporation All Rights Reserved.
While this information is presented in good faith and believed to be
accurate, Azbil Corporation disclaims the implied warranties of mer-
chantability and tness for a particular purpose and makes no express
warranties except as may be stated in its written agreement with and
for its customer.
In no event is Azbil Corporation liable to anyone for any indirect, spe-
cial or consequential damages. This information and specications in
this document are subject to change without notice.
HART® is a registered trademark of FieldComm Group.

Azbil Corporation Preface
Model PTG71 / 72 - Smart Pressure Transmitter i
Preface
Thank you very much for purchasing Azbil Corporation's Model PTG Smart Pressure
Transmitter. Azbil Corporation's Model PTG Smart Pressure Transmitters are high
performance, highly reliable general use pressure transmitters. The Model PTG
oer improved performance and reliability with size, weight and cost advantages.
Information regarding the Model PTG can be accessed using handheld SFC (Smart
Field Communicator) at the valve or at a eld junction box, or by using operators
console.
This instruction manual describes how to use the Model PTG Smart Pressure
Transmitter. We hope that you will fully use this manual to make the best use of the
features of Model PTG Pressure Transmitter.
For safe operation of this product, please follow the following safety instructions.
Azbil Corporation will not assume any liability for damages arising from failure to
follow these safety instructions.
~Note Good installation, correct operation, and post-installation maintenance are
essential to safe use of your Model PTG Pressure Transmitter. The safety
instructions are contained in this manual. Fully understand these instructions
before installing, operating, and maintaining your PTG Smart Pressure
Transmitter.
Safety Standard
• The safety instructions presented in this Instruction Manual conform to ANSI
(American National Standards Institute) Z535-4.
• In this manual, safety instructions are classied as either Warnings Cautions, and
Notes. The standard of classication is as follows:
WARNING
Failure to observe safety instructions in this category may result in personal injury or, even,
death. Equivalent to denition “warning” in ANSI regulations.
CAUTION
Failure to observe safety instructions in this category could result in damage to or breakdown
of equipment or facilities. Equivalent to denition “caution” in ANSI regulations.
~Note Information that can be useful to the user. Equivalent to denition to “note” in
ANSI regulations.
Observe safe working practices
Note the following to ensure safety during installation and operation:

Preface Azbil Corporation
ii Model PTG71 / 72 - Smart Pressure Transmitter
• Turn o the power switch before any wiring work.
• When opening the cover of the terminal box, pay due attention to the edges of
the cover and the threads in the screws in the cabinet. If the PTG Smart Pressure
Transmitter is an explosion model, NEVER open the terminal cover while the
Transmitter is energized in operation.
• Do not stand on the installed Transmitter or use it as a step to prevent accidents.
• Do not touch the Transmitter unnecessarily while in operation. Surface may be
very hot or very cold, depending on the process condition.

Azbil Corporation Preface
Model PTG71 / 72 - Smart Pressure Transmitter iii
Explosion protected Models
FM Explosionproof / Dust-ignitionproof Apparatus (in accordance with
NEC)
CAUTION
• Install the apparatus only in areas for which the apparatus has been approved.
• Seal each conduit entering the apparatus enclosure within 18 inches (457 mm) from the
enclosure.
• Do not open the apparatus enclosure when an explosive atmosphere is present.
1. Class I, Division 1 locations
1.1 Wiring methods
• Threaded rigid metal conduit, threaded steel intermediate metal conduit, or Type
MI cable with termination ttings approved for the location, can be employed
• Threaded joints must be made up with at least ve threads fully engaged.
1.2 Sealing
• Each conduit entering the apparatus enclosure is required to be sealed within 18
inches (457 mm) from the enclosure.
• The sealing of each conduit can be provided with a sealing tting approved for class
I locations.
• Sealing compound must be approved and must not have a melting point of less than
93°C (200 °F).
• The minimum thickness of the sealing compound should not be less than the trade size
of the conduit and, in no case, less than 5/8 inch (16 mm).
• Splices and taps cannot be made in the ttings.
2. Class I, Division 2 locations
2.1 Wiring methods
• Threaded rigid metal conduit, threaded steel intermediate metal conduit,
enclosed gasketed busways, or Type PLTC cable in accordance with the provisions
of remote-control, signaling, and power-limited circuits (see NEC, Article 725), or
Type ITC cable in cable trays, in raceways, supported by messenger wire, or directly
buried where the cable is listed for this use; Type MI, MC, MV, or TC cable with
approved termination ttings can be employed.
2.2 Sealing
• Each conduit entering the apparatus enclosure is required to be sealed as shown in 1.2.
3. Class II, Division 1 locations
3.1 Wiring methods
• Threaded rigid metal conduit, threaded steel intermediate metal conduit, or Type
MI cable with termination ttings approved for the location, can be employed.

Preface Azbil Corporation
iv Model PTG71 / 72 - Smart Pressure Transmitter
3.2 Sealing
• Where a raceway provides communication between the apparatus enclosure and
an enclosure that is not required to be dust-ignitionproof, suitable means must be
provided to prevent the entrance of dust into the former enclosure through this
raceway. One of the following means can be used: (1) a permanent and eective seal;
(2) a horizontal raceway not less than 10 ft (3.05 m) long; or (3) a vertical raceway
not less than 5 ft (1.52 m) long and extending downward from the dust-ignitionproof
enclosure.
• Seals are not required to be explosionproof.
4. Class II, Division 2 locations
4.1 Wiring methods
• Rigid metal conduit, intermediate metal conduit, electrical metallic tubing, dust-
tight wireways, or Type MC or MI cable with approved termination ttings,
or Type PLTC in cable trays, or Type ITC in cable trays, or Type MC or TC
cable installed in ladder, ventilated trough, or ventilated channel cable trays in a
single layer, with a space not less than the larger cable diameter between the two
adjacent cables, can be employed.
4.2 Sealing
• Sealing means must be provided as shown in 3.2.
5. Class III, Division 1 locations
5.1 Wiring methods
• Rigid metal conduit, rigid non-metallic conduit, intermediate metal conduit,
electrical metallic tubing, dust-tight wireways, or Type MC or MI cable with
approved termination ttings, can be employed.
5.2 Sealing
• Sealing means are not required.
6. Class III, Division 2 locations
6.1 Wiring methods
• Wiring methods must comply with 5.1.
6.2 Sealing
• Sealing means are not required.

Azbil Corporation Preface
Model PTG71 / 72 - Smart Pressure Transmitter v
NEPSI Flameproof and Dust Certications
Smart Pressure Transmitter Model PTG, manufactured by Azbil Corporation,
has been approved by National Supervision and Inspection Centre for Explosion
Protection and Safety of Instrumentation (NEPSI) in accordance with the following
standards:
GB3836.1 - 2010 Electrical apparatus for explosive gas atmospheres
Part 1 : General requirements
GB3836.2 - 2010 Electrical apparatus for explosive gas atmospheres
Part 2 : Flameproof enclosure “d”
GB12476.1 - 2000 Electrical apparatus for use in the presence of combustible dust
Part A-1 : Electrical apparatus protected by enclosures and
surface temperature limitation - Specication for apparatus
Transmitters are approved with Ex marking of Ex d IIC T4–T6 Gb, DIP A20 TA,
T4–T6 IP67. The certicate number is GYJ14.1368X.
1. SPECIAL CONDITIONS FOR SAFE USE
When the sign “X” is placed after the certicate number, it indicates that the product
is subject to special conditions or instructions for safe use.
1.1 Special condition for safe use: The cover shall have at least 7 engaged threads.
1.2 Instructions for safe use: To maintain the degree of protection of at least IP67 in
accordance with IEC60529, suitable cable glands, conduit sealing devices or blanking
elements must be used and correctly installed.
2. CONDITIONS FOR SAFE USE
2.1 The external earthing terminal should be connected to the ground reliably at site.
2.2 The relation between temperature class, ambient temperature range, and the maximum
process temperature are shown below:
Temperature
Class
Ambient Temperature
Range
Maximum Process
Temperature
T4 -25°C to +60°C > 130°C
T5 -25°C to +60°C > 95°C
T6 -25°C to +40°C > 80°C
2.3 The cable entry holes have to be connected by means of suitable cable entry device with
type of protection of Ex d IIC Gb. The cable entry device shall be approved by NEPSI in
accordance with GB3836.1-2010, GB3836.2-2010, GB12476.1-2000, which are covered
by a separate examination certicate. The threads of the cable entries shall be 1/2-
14NPT. Unused entry holes shall be blocked by blanking elements. After installation of
the cable entry, the whole apparatus shall reach IP67.
2.4 The warning, “Do not remove cover while circuits are alive” must be obeyed when the
product is used in an explosive gas area.

Preface Azbil Corporation
vi Model PTG71 / 72 - Smart Pressure Transmitter
2.5 Rated supply voltage: 12 to 30 Vd.c.
2.6 End users are forbidden to change the conguration to ensure the explosion protection
performance of the product.
2.7 Regular cleanness shall be conducted to avoid the deposit of dust.
2.8 During installation, operation, and maintenance of the product users should comply with
the relevant requirements of the product instruction manual, and the following standards:
GB3836.13-1997 “Electrical apparatus for explosive gas atmospheres
- Part 13: Repair and overhaul for apparatus used in explosive gas atmospheres”
GB3836.15-2000 “Electrical apparatus for explosive gas atmospheres
- Part 15: Electrical installations in hazardous areas (other than mines)”
GB3836.16-2006 “Electrical apparatus for explosive gas atmospheres
- Part 16: Inspection and maintenance of electrical installation (other than mines)”
GB50257-1996 “Code for construction and acceptance of electric device for explosion
atmospheres and re hazard electrical equipment installation engineering”
GB12476.2-2010 “Electrical apparatus for use in the presence of combustible dust
- Part 2”
GB15577-2007 “Safety regulations for the protection of dust explosion”
3. MANUFACTURER'S RESPONSIBILITY
3.1 The instruction manual should include all the items mentioned above.
3.2 The manufacturer must strictly produce according to the documents approved by NEPSI.

Azbil Corporation Preface
Model PTG71 / 72 - Smart Pressure Transmitter vii
Precautions
General Precautions
1. Checking the Product
The Model PTG Smart Transmitter is a precision instrument. It has cleared various
tests based on Azbil Corporation’s rigorous quality control programs. Handle it with
care to prevent accidents or damage.
Open the package, and check that the following items are included:
1) Main PTG Smart Pressure Transmitter
2) Blind conduit plug (standard accessory)
3) Gasket (if process connection used a male screw)
4) 1 hexagonal wrench (standard accessory)
5) 2-inch pipe/wall mounting hardware set (optional)
6) Unit seal (for integral digital indicator type, optional)
7) Packing sets for wiring (For TIIS explosion proof type):
2. Checking the specications
Specications are printed to the nameplate of the PTG unit. Refer to the supplement,
and make sure that the unit you have received matches to the model that you specied
at the time of ordering. Then verify the followings:
Tag number (TAG NO.)
Type
Prom number (PROM No.)
3. Transportation
We recommend to transport the transmitter to the installation site in the packaged
state in order to prevent damages from occurring during transportation.
4. Storage Environment
When storing your Transmitter unpacked, observe the following.
Store indoors, within specied storage temperature and humidity, in a location that is
free from excessive shocks and vibrations. Store the unit original packing condition.
When storing your unit after use, follow these steps:
1. Firmly tighten the terminal box cover, and seal the conduit connection end with
tape, to prevent the entry of moisture.
2. Seal the connection ends and bleed the hole in the pilot cover with tape, to prevent
the entry of moisture and dirt.

Preface Azbil Corporation
viii Model PTG71 / 72 - Smart Pressure Transmitter
3. Restore packing to original condition.
4. Store indoors, at ordinary temperature and humidity (about 25°C or 77°F, and
65% respectively), in a location that is free from excessive shocks and vibrations
and not exposed to rain or water.
5. Installation Environment
In order to maintain the original performance and reliability for a long time, install
the transmitter in the following environment:
(1) Ambient temperature
(a) The temperature gradient and temperature changes in installation environment
should be as small as possible.
(b) If a transmitter is exposed to heat radiated from the process side, lower its
ambient temperature as much as possible by installing it or by selecting a well-
ventilated location for installation.
(c) If a process uid can freeze, prevent freezing by means of heat insulation.
(2) Environment
Pollution degree: 2
Avoid corrosive environment as much as possible.
Install in explosion proof and intrinsically safe conditions.
(3) Shock and vibration
Install the transmitter where shocks and vibrations will be as small as possible.
(4) Industrial Electromagnetic Environment
The transmitter intends to be used in an environment existing at locations
characterized by a separate power network, in most cases supplied from a high-
or medium-voltage transformer, dedicated for the supply of installations feeding
manufacturing or similar plants with one or more of the following conditions:
- frequent switching of heavy inductive or capacitive loads;
- high currents and associated magnetic elds;
- presence of Industrial, Scientic and Medical (ISM) equipment (for example,
welding machines)
6. Application of Pressure to Transmitter
(1) Do not apply a pressure that exceeds the specied level.
(2) Do not tighten or loosen bolts while pressure is being applied to the transmitter.