Ashcroft t5500e Instruction Manual

IM-T5500E-E-Rev 0 08/2014 Page 1 of 11
P/N 095I105-01EN
Installation and Maintenance
Instruction Manual
Bourdon tube pressure gauge with integrated transmitter, model T5500E
for industrial application
In the following configuration:
•100=T5500E### bourdon tube pressure gauge with integrated transmitter

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Table of contents:
1General remarks.........................................................................................................................................................3
1.1 Purpose of this Manual........................................................................................................................................3
1.2 Symbols...............................................................................................................................................................3
1.3 Limits of liability...................................................................................................................................................3
1.4 Copyright.............................................................................................................................................................3
1.5 Warranty..............................................................................................................................................................3
1.6 Manufacturer’s address, customer services........................................................................................................3
2Safety..........................................................................................................................................................................4
2.1 General sources of hazards................................................................................................................................4
2.2 Use in accordance with intended purpose..........................................................................................................4
2.3 Operator’s responsibility......................................................................................................................................4
2.4 Staff qualifications (target group assessment)....................................................................................................5
2.5 Signs/Safety markings.........................................................................................................................................5
2.6 Safety equipment ................................................................................................................................................5
2.7 Environmental protection.....................................................................................................................................5
3Technical data ............................................................................................................................................................5
4Labeling on the device................................................................................................................................................5
5Construction and function...........................................................................................................................................6
5.1 Overview..............................................................................................................................................................6
5.2 Description of function.........................................................................................................................................6
5.3 Description of components..................................................................................................................................6
5.4 Accessories.........................................................................................................................................................6
6Transport ....................................................................................................................................................................7
6.1 Safety ..................................................................................................................................................................7
6.2 Transport inspection............................................................................................................................................7
6.3 Storage................................................................................................................................................................7
7Assembly/Installation..................................................................................................................................................7
7.1 Safety ..................................................................................................................................................................7
7.2 Preparations (requirements for the installation location).....................................................................................7
7.3 Mounting/Installation ...........................................................................................................................................7
7.4 Starting up...........................................................................................................................................................8
7.5 Subsequent relocation of the gauge (by the customer)......................................................................................9
8Servicing.....................................................................................................................................................................9
8.1 Safety ..................................................................................................................................................................9
8.2 Check on function, and recalibration...................................................................................................................9
8.3 Cleaning and maintenance ...............................................................................................................................10
9Faults........................................................................................................................................................................10
9.1 Safety ................................................................................................................................................................10
9.2 Conduct in the event of faults............................................................................................................................10
9.3 Fault table..........................................................................................................................................................10
9.4 Conduct following fault rectification...................................................................................................................10
10 Removal, disposal.................................................................................................................................................10
10.1 Safety.............................................................................................................................................................10

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10.2 Removal.........................................................................................................................................................10
10.3 Disposal.........................................................................................................................................................10
11 Appendix...............................................................................................................................................................10
11.1 Data sheet for Bourdon tube pressure gauge with integrated transmitter T5500E.......................................10
11.2 CE Declaration of conformity.........................................................................................................................11
1 General remarks
1.1 Purpose of this Manual
This Operating Manual contains fundamental and essential advice to be followed for the installation, operation and
servicing of the device. It must be read without fail before assembly and start-up of the device by the fitter, the
operator and the specialist personnel responsible for the device. This Operating Manual must be available at the point
of use at all times.
The following sections about general safety information (2) and also the following specific advice regarding the
intended purposes (2.2) and through to disposal (10.3) contain important safety information which, if not followed, may
result in risks for people and animals, or to property and buildings.
1.2 Symbols
Warning!
This indicates a possibly hazardous situation where failing to follow advice may result in risks to people,
animals, the environment and buildings.
Information!
This emphasizes key information for efficient, fault-free operation.
1.3 Limits of liability
Failure to respect this safety information, the envisaged uses or the limit values relating to use indicated in the
technical data for the device may result in risk or to injury to people, the environment or the plant.
Claims for compensation for damage against the device supplier are excluded in such an eventuality.
1.4 Copyright
This Operating Manual may only be copied and passed on as a complete document without the special permission of
the publisher.
1.5 Warranty
For the product described here, we offer a warranty pursuant to Section 6 Guarantee in Respect of Defects in our
General Terms and Conditions of Delivery and Payment.
1.6 Manufacturer’s address, customer services
Ashcroft Instruments GmbH
Max-Planck-Strasse 1
D-52499 Baesweiler. Germany
Tel.: [phone]
Fax.: [phone]
E-mail: [e-mail]
Web: www.ashcroft.eu

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2 Safety
2.1 General sources of hazards
Pressure gauges are pressurized instruments where failure can result in hazardous situations. The selection of
pressure gauge should be made in accordance with the rules set out in EN 837-2. A failure resulting in injury or
damage may be caused by excessive overpressure, excessive vibration or pressure pulsation, excessive instrument
temperature, corrosion of the pressure containing parts, or other misuse. Consult the manufacturer before installing if
there are any questions or concerns.
2.1.1 Overpressure
Pressure spikes in excess of the rated overpressure capability of the transducer may cause irreversible electrical
and/or mechanical damage to the pressure measuring and containing elements.
Fluid hammer and surges can destroy any pressure transducer and must always be avoided. A pressure snubber
should be installed to eliminate the damaging hammer effects. Fluid hammer occurs when a liquid flow is suddenly
stopped, as with quick closing solenoid valves. Surges occur when flow is suddenly begun, as when a pump is turned
on at full power or a valve is quickly opened.
Liquid surges are particularly damaging to pressure transducers if the pipe is originally empty. To avoid damaging
surges, fluid lines should remain full (if possible), pumps should be brought up to power slowly, and valves opened
slowly. To avoid damage from both fluid hammer and surges, a surge chamber should be installed.
Symptoms of fluid hammer and surge's damaging effects:
• Pressure transducer exhibits an output at zero pressure (large zero offset).
• Pressure transducer output remains constant regardless of pressure
• In severe cases, there will be no output.
2.1.2 Freezing
Prohibit freezing of media in pressure port. Unit should be drained (mount in vertical position to prevent possible
overpressure damage from frozen media.
2.1.3 Static electrical charges
Any electrical device may be susceptible to damage when exposed to static electrical charges. To avoid damage to
the transducer observe the following:
• Operator/installer should follow the proper ESD (electrostatic discharge) protection procedures before
handling the pressure transducer components.
• Ground the body of the device BEFORE making any electrical connections
• When disconnecting, remove the ground LAST!
The shield and drain wire in the cable (if supplied) is not connected to the transducer body, and is not a
suitable ground.
2.2 Use in accordance with intended purpose
The devices are only to be used for the intended purpose as described by the manufacturer.
The devices are used for direct display of overpressures, vacuum and compound pressure and for transmission of
overpressures, vacuum and compound pressure into a standard electrical output signal.
For each use scenario, the corresponding set-up regulations must be respected.
The usage in explosion risk areas is not allowed.
2.3 Operator’s responsibility
Safety instructions for proper operation of the device must be respected. They are to be provided by the operator for
use by the respective personnel for installation, servicing, inspection and operation. Risks from electrical energy and
from the released energy of the medium, from escaping media and from improper connection of the device must be
eliminated. The details for this are to be found in the corresponding applicable set of regulations, such as DIN EN,
UVV (accident prevention regulations) and in sector-specific instances of use (DVWG, Ex-. GL, etc.) the VDE
guidelines and the regulations supplied by local utilities companies.

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The device must be taken out of service and secured against inadvertently being restarted, if the presumption is that
risk-free operation is no longer possible (see Chapter 9: Faults).
Field Modification or other alterations to the instrument are not permitted and will void the warranty. This also applies
to installation of spare parts. Possible conversations or alterations may only be carried out by the manufacturer.
The operational safety of the device is only guaranteed where it is used for its intended purpose. The specification of
the device must be adapted to the medium used in the plant. The limit values indicated in the technical data must not
be exceeded.
The safety information detailed in this Operating Manual, existing national regulations for accident prevention, and the
operator’s internal regulations regarding working, operations and safety must be respected.
The operator is responsible for all specified servicing, inspection and installation works being carried out by authorized
and qualified specialists.
2.4 Staff qualifications (target group assessment)
The device may only be installed and started up by specialist staff familiar with installation, start-up and operation of
the product.
Specialist staff are defined as those individuals capable of assessing the work assigned to them on the basis of their
specialist training, knowledge and experience of the relevant standards, and can identify possible risks.
2.5 Signs/Safety markings
The pressure gauge and packaging carry markings detailing the article number, measurement range and
manufacturer. The pressure gauge can be provided with additional signs and safety markings advising on special
conditions:
Advice on calibration
Safety marking pursuant to EN 837-1
Oil-can deleted (if used for oxygen service)
Silicone-free (for use in the automotive industry)
2.6 Safety equipment
The window of model T5500E uses multi-layer safety glass.
This device has internal transient and reverse power protection.
2.7 Environmental protection
This device does not contain any environmental critical components.
3 Technical data
The detailed technical information can be found in the documents in the Appendix, Chapter 11.
4 Labeling on the device
The label with the serial number and type designation is located on the outside of the housing. The materials identifier
is encoded in the type designation.

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5 Construction and function
5.1 Overview
1 Socket and instrument connection
2 Electrical termination
3 Dial
4 Pointer
5 Cap with access to PCB
6 Vent valve
7 Case
8 Bayonet ring
5.2 Description of function
The sensing element, a bourdon tube (C-form or helical) that is welded to the socket, will be exposed from inside with
pressure. Under pressure the elastic tube is deflecting against the zero position. This deflection is proportional to the
adjacent pressure. The movement transfers the deflection to the pointer.
The display of the measured value is provided on a 270° scale (dial arc.).
The sensing element, a thin film pressure sensor that is welded to the socket, will be exposed from outside with
pressure. Under pressure the elastic diaphragm is deflecting against the zero position. This deflection is measured by
resistors of a Wheatstone bridge located at the back side of diaphragm. The PCB transfers the output signal of the
sensing element into a standard electric output signal.
5.3 Description of components
5.3.1 Scale with pointer
The pressure gauge is equipped with a dial face and pointer pursuant to EN 837-1, nominal size 100 mm.
Erläu ter ung, zusätz lic h ei n H i nweis :
5.3.2 Instrument connection
The instrument connection is located on the bottom side of the pressure gauge and is a threaded pressure connection.
5.3.3 Vent valve
The vent valve for the housing is located on the top side. If the nipple is pulled out, the housing is ventilated and the
pressure which has built up in the housing due to the influence of temperature is discharged. With the valve closed,
protection class IP 65 is achieved.
5.3.4 Thin film sensing element
The pressure transmitter incorporates polysilicon thin film technology. Modern low-pressure chemical vapor deposition
methods provide simple, stable molecular bonds between the metal diaphragm and a polysilicon strain gage bridge.
There are no epoxies or bonding agents to contribute to signal instability or drift. The integral metal diaphragm and
polysilicon bridge are virtually unaffected by shock, vibration or mounting.
5.3.5 Printed circuit board
The PCB provides the signal conditioning and is equipped with pots for zero and span adjustment.
5.3.6 Electrical termination
The electrical termination is provided with standardized termination plug.
5.4 Accessories
Please contact the manufacturer regarding special tools and accessories.

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6 Transport
6.1 Safety
The pressure gauge should be protected against the effects of knocks and impacts. The device should only be
transported in the packaging provided to prevent damage. The device should only be transported in a clean condition
(free of residues of measuring media).
6.2 Transport inspection
Delivery should be checked for completeness and potential damage due to transport. In the event damage, delivery
must not be accepted, or only accepted subject to reservation of the scope of the damage being recorded.
6.3 Storage
The pressure gauge must be stored in dry, clean conditions, within a temperature range of -40 to +85 °C, protected
against direct exposure to sunlight and protected against impact damage.
7 Assembly/Installation
7.1 Safety
To ensure safe working during installation and servicing, suitable shut-off valves must be installed in the plant (see 5.4
Accessories) prior to enabling the device:
Relieve pressure to remove from operation;
Disconnect power for repair or inspection within the relevant plant;
Or to enable function tests of the device to be performed “on site”.
During preparation to mount/install the gauge, the plant must be protected against being switched back on.
7.2 Preparations (requirements for the installation location)
A check on suitability of the device for the medium to be measured, the scope of the measurement range and of
the protection against special conditions such as vibrations, pulsations and pressure spikes.
A bracket must be installed to support the pressure gauge if the metering pipe is not able to provide adequate
support.
The installation location should be selected where no personnel operate the rear of the pressure gauge.
7.3 Mounting/Installation
7.3.1 Process connection
As standard, the device is equipped to be pipe mounted with a pressure connection shank pursuant to DIN EN 837-1.
The device is calibrated ex-works for vertical installation.
Connection to be undertaken by authorized and qualified specialist staff only.
Use only with the mechanical process connection provided – regarding the configuration, see order code on the
device type label, with a matching threaded seal.
When connecting the device, the pipes must be depressurized.
The pressure metering pipe must be laid inclined in such a way that, for example, for measurements of fluids no
air pockets can form, and for measurements of gases no water pockets. If the necessary incline is not achieved,
then at suitable points water separators or air separators must be installed.
The pressure metering pipe must be kept as short as possible and laid without sharp bends, to avoid the
occurrence of irritating delays.
With liquid measurement media, the pressurized connection pipe must be degassed, since any gas bubble
inclusions result in measurement error.
If water is used as the measurement medium, the device must be frost-protected.

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Safety notice: Only mount using the correct open-jawed wrench, and do not twist the device itself.
G ¼ B, G ½ B
1. Pressure connection
2. Gasket DIN 16258
Other parallel threads
1. Pressure connection
2. Gasket (USIT)
7.3.2 Electrical connection
Connection to be undertaken by authorized and qualified specialist staff only.
The electrical connection of the device is to be undertaken in accordance with the relevant regulations of the VDE
and the regulations supplied by the local utilities company.
Disconnect the plant from the mains supply before wiring electrical connections.
Power supply to be provided is 12-30 VDC
Maximum loop resistance for 4 ... 20 mA: ≤ (UB – 9,5 V) / 0,02 A
For minimum noise susceptibility, avoid running the transducer’s cable in a conduit that contains high current AC
power cables. Where possible avoid running the cable near inductive equipment.
Units with shielded cable electrical termination, connect the drain wire to the guard terminal on the read out device
or measuring instrument, if available. In all other cases connect to the ground or to the power supply negative
terminal.
Wiring Diagrams:
7.4 Starting up
The precondition for start-up is proper installation of all electrical feed lines and metering pipes. All connecting lines
must be laid such that no mechanical forces can act on the device.
Before start-up, the seal on the pressurized connection line must be checked.
7.4.1 Zero point adjustment for pressure gauge
The pressure gauges are supplied calibrated ex works, so that as a rule there is no need for calibration works at the
installation point.
For devices with Micrometer pointer (see. order code), zero point adjustment on site is possible. For this, proceed as
follows:

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Depressurize the pressure metering pipe.
Open the bayonet ring and remove ring and window.
Hold the pointer in place while turning the screw, until the
pointer (after releasing again) has the correct position.
Close the case again and pay attention to correct fit of
window, gasket and bayonet ring.
7.4.2 Zero point adjustment for transmitter
While Zero adjustment is not normally necessary, it may be desirable to trim out any offset in the system. However,
proper Span calibration requires a pressure standard three to five times more accurate than the accuracy of the
transducer, and there may also be interaction of Span on Zero. For detailed instruction see chapter 8.2.1. Zero and
span adjustment for transmitter
7.5 Subsequent relocation of the gauge (by the customer)
Recommendation: Do not remove the pressure gauge from one metering point and fit it in a different place,
as there is a risk of the measuring media being mixed, with unforeseeable chemical reactions.
8 Servicing
The device is maintenance-free. However, to ensure reliable operation and a long life, we recommend that it is
checked periodically.
8.1 Safety
When undertaking service work on the device, the pressure lines must be depressurized and the plant secured against
being switched on again.
8.2 Check on function, and recalibration
Inspection of function and recalibration should be at regular intervals. The precise testing cycles should be adjusted in
line with the operating conditions and ambient conditions. In the event of various device components interacting, the
operating instructions for all other devices should also be taken into account.
Check display.
Check function, in conjunction with downstream components.
Check pressurized connection pipes for seal condition.
8.2.1 Zero and span adjustment for transmitter
While Zero adjustment is not normally necessary, it may be desirable to trim out any offset in
the system. However, proper Span calibration requires a pressure standard three to five times
more accurate than the accuracy of the transducer, and there may also be interaction of Span
on Zero.
Access to “Z” and “S” pots via the electrical termination or screw cap at the back of the unit is
standard. Access is gained by removing the black threaded cap, once removed you will see the
pots indicated by “Z” and “S” respectively as shown below. Using a small trim pot tool, you can
adjust zero ±10% of full scale and span ±10% of full scale.
Recalibration Instructions:
1. Apply 0% full scale pressure.
2. Adjust the output using the zero adjust trim pot.
3. Apply 100% full scale pressure.
4. Adjust the output using the span adjustment trim pot.
5. Repeat steps 1 through 4 as necessary.

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8.3 Cleaning and maintenance
Use a non-aggressive cleaning agent when cleaning; ventilation valve should be closed and in accordance with the
protection category of the device.
9 Faults
9.1 Safety
Defective or faulty pressure gauges put the operational safety and process safety of the plant at risk, and can lead to a
risk or injury to persons, the environment or the plant.
9.2 Conduct in the event of faults
All defective of faulty devices must be taken out of service. If a repair is required, the device must be sent directly to
our Repairs Department. We request that all returns of devices are agreed with our Service Department.
9.3 Fault table
Possible situations indicating a fault:
Jerky or random movement of the pointer
Pointer does not set to zero for pressure less display
Indications that the measurement system seal is
imperfect (discoloration of dial display)
Bent or loose pointer
Cracked window
Damage to housing or electrical termination
No or wrong output signal, Zero offset
Replacement of the pressure gauge is required in the event any of the above exist.
9.4 Conduct following fault rectification
See Chapter 7.3 Mounting/Installation
10 Removal, disposal
10.1 Safety
Residue from process media either within or on uninstalled gauges can constitute a risk to people, the
environment and equipment. Adequate precautionary measures must be adopted. If necessary, the devices
must be cleaned thoroughly (see advice in safety data sheets).
10.2 Removal
When undertaking servicing of the device, the pressure lines must be depressurized, the electrical connections
isolated from the mains supply, and the plant secured against being switched on again.
Take care to uninstall the gauge using a suitable tool.
10.3 Disposal
Please help protect the environment by disposing or recycling the device in accordance with the applicable
regulations.
11 Appendix
11.1 Data sheet for Bourdon tube pressure gauge with integrated transmitter T5500E
Detailed data sheet is available from supplier’s website (see 1.6 Manufacturer’s address, customer services)
This table refers to specific documents:
Model
Description
Document
T5500E
Stainless steel pressure gauge with integrated transmitter model
T5500E
G1.T5500E

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11.2 CE Declaration of conformity