Dynisco PT303 Manuale utente
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Rev: 1217P/N: 974124 ECO: 27882
PT303 Strain Gage Pressure Transmier
Operang Manual
Explosion proof pressure transmier with integrated amplier for
use in hazardous environmeents
From lab to production,
providing a window into the process
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Rev: 1217P/N: 974124 ECO: 27882
Table of Contents
Content Page Icon
General
Notes on safety
Technical data
Funcon
Transport/delivery
Assembly
Commissioning
Maintenance
Troubleshoong
3
5
6
11
11
12
14
16
17
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1. General
1.1 Important informaon
1.2 Copyright
1.3 Explanaon of icons
1.4 Abbreviaons
1.5 Correct use
1.6 User’s obligaons
1.1 Important information
This manual applies to the PT303 only. It must be kept near the equipment in a
readily and immediately accessible locaon at all mes.
The content of this manual must be read, understood and followed in all points by all
relevant people. This applies in parcular to the notes on safety. Following the safety
instrucons will help to prevent accidents, defects and malfuncons.
DYNISCO will not be held liable for any injury, loss or damage resulng from failure to
follow the instrucons in this manual.
If malfuncons occur in spite of having followed the operang instrucons, please
contact the DYNISCO customer service department (see chapter 8,
Maintenance).
This applies in parcular during the warranty period.
3
4
4
4
5
5
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1.2 Copyright
Copyright law requires that this manual be used for inhouse purposes only.
All reproducon, even parally and for in-house purposes, requires the approval of
DYNISCO. This manual may not be forwarded to third pares.
1.3 Explanation of icons
The manual uses icons to indicate informaon pertaining to safety:
Risk of destrucon or damage to equipment, machines or installaons
General danger to life or limb
Specic danger to life or limb
You MUST do this
The safety instrucons are provided again in the individual chapters of the manual.
1.4 Abbreviations
The following abbreviaons are used:
OM Operang manual
PT pressure transmier
f.s. of full scale
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1.5 Correct use
The PT303 is designed for measuring pressure in explosive atmospheres (Class I,
Division 1, Groups A, B, C & D) as part of a larger overall system. It contains an
integrated signal amplier. The PT303 pressure transmier can be used in media
temperatures up to 170°F. If the pressure transmier is used in other applicaons, the
safety and accident prevenon regulaons specic to that applicaon must be
followed.
1.6 User’s obligations
The operator or owner of the larger overall system, e.g. a machine, is responsible for
following the safety and accident prevenon regulaons that apply to the specic
applicaon.
2. Notes on safety
The operator or owner of the larger overall system is responsible for
following the safety and accident prevenon regulaons that apply
to the specic applicaon.
Mounng and electrical connecon of the PT must be done by specialists
with EMC training, following all applicable regulaons, and in
pressureless, voltage-free condion with the machine switched o.
The machine must be secured against being switched back on! Ambient
temperature for the electronics housing max. +170°F.
Higher temperatures can result in damage and malfuncon. Do not install
the pressure transmier in places where this temperature is exceeded.
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Explosion hazard!
Deviaon of the supply voltage from the value given in the technical specicaons, or
false polarity, can damage the pressure transmier and cause malfuncons that can
pose a risk of explosion. Operate with a power supply with the following
specicaons when employing the pressure 0 - 5 Vdcoutput:
Do not lay connecng cables in the direct vicinity of cables carrying higher voltage or
used to switch inducve or capacive loads.
3. Technical Data
3.1 Ordering guide
3.1.1 Ordering guide for PT303
3.2 Ordering example
3.3 Safety related specicaons
3.4 Performance characteriscs
3.4.1 Accuracy
3.5 Wiring/Electrical Terminaon
3.6 Pressure ranges
3.6.1 Max. Overload
3.6.2 Natural frequency
3.7 Electrical Data
3.8 Weight
3.9 Dimensions
6
7
7
7
7
7
8
9
9
9
9
9
10
3.1 Ordering guide
The exact meanings of the leer/digit combinaons are given in the corresponding
secons of chapter 3.
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3.1.1 Ordering guide for pt303
3.2 Example for Ordering
3.3 Safety Related Specifications
3.4 Performance Characteristics
3.4.1 Accuracy
FM approvals Class I, Division 1 Groups A, B, C & D
PT303-X
±0.25% of full scale (Including Linearity, hysterisis and repeatability)
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3.5 Wiring/Electrical Termination
The electrical terminaon of the PT303 is 72” of four conductor sheilded cable, #22
AWG conductors, with 1/2-14 NPT conduit ng.
Color Funcon
Red Signal +
Black Signal -
White Excitaon +
Green Excitaon -
Fig. 3-1 Typical Wiring Diagram
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3.6 Pressure Ranges
(A) PT303-15 0-15
(A) PT303-30 0-30
(A) PT303-50 0-50
(A) PT303-75 0-75
(A) PT303-1C 0-100
(A) PT303-1.1C 0-110
(A) PT303-1.75C 0-175
(A) PT303-2C 0-200
(A) PT303-2.5C 0-250
(A) PT303-3C 0-300
(A) PT303-4C 0-400
(A) PT303-5C 0-500
(A) PT303-7.5C 0 - 750
(A) PT303-1M 0-1,000
(A) PT303-1.5M 0-1,500
(A) PT303-2M 0-2,000
(A) PT303-2.5M 0-2,500
(A) PT303-3M 0-3,000
(A) PT303-5M 0-5,000
(A) PT303-7.5M 0-7,500
(A) PT303-10M 0-10,000
3.6.1 Max Overload (Without influencing Operation Data)
3.6.2 Frequency Response
3.7 Electrical Data
3.8 Weight
PT303 2x rated pressure
> 2000 Hz
-3.5 pounds
Conguraon 4-arm Wheatstone bridge strain gauge with int. amplier
Output signal 4-wire 0 -5 Vdc
Supply voltage +/- 12 Vdc for FM approved explosion proof models
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3.9 Dimensions
Fig. 3-2 PT303 Mechanical Drawing
Indice
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