pm105 pressure meter user`s manual

PM105
PRESSURE METER
USER’S MANUAL
Manual revision: 15 March, 2001
SCSMANP015
Copyrighted © 2001
PM105 user’s manual
Thank you
for purchasing a Tek Know pressure meter.
The Tek Know products are manufactured by Scan-Sense AS in accordance with our high quality standards in design, choice of components and workmanship in order to achieve maximum customer satisfaction and to fulfil our vision to be our customers “First Choice”.
The PM105 is designed and manufactured by :
Scan-Sense AS
Bekkeveien 163
N-3173 Vear
NORWAY
2
Tel.
+47 33 36 30 00
Fax:
+47 33 36 30 01
www.scansense.no
post@scansense.no
PM105 user’s manual
Contents
Safety ................................................................................................. 4
Certification ....................................................................................... 4
Warranty ............................................................................................ 4
The manual ........................................................................................ 5
Introduction ....................................................................................... 5
Unpacking .......................................................................................... 5
Operational hints ............................................................................... 6
Basic functions .................................................................................. 7
Operating supplies ............................................................................. 8
Trouble shooting ................................................................................ 8
Service and recalibration ................................................................... 9
Definition of terminology .................................................................. 9
Notice .............................................................................................. 10
Specifications ................................................................................... 11
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PM105 user’s manual
Safety
Severe damage may result if the PM105 is installed on a ”Dead-End”
hydraulic system with a shut-off valve in close line proximity.
Certain valves on operation may cause small «Dead-End» volumetric
changes which combined with the low compliance PM105 sensor, can
generate high pressure overload. Make sure that the system is not under
pressure when the connection is made up.
Certification
Scan-Sense certifies that this product meets its published specifications
at the time of shipment from the factory.
Scan-Sense further certifies that its calibration measurements are
traceable to accredited international standards.
PM105 is tested and approved according to the following standards:
Imunity:
Emission:
EEx/IS certification:
EN 50082-2
EN 50081-1
EEx ia IIC T5
Warranty
These Tek Know products are warranted against defects in material
and workman-ship for a period of one year from date of shipment.
During the warranty period, Scan-Sense will repair products that prove
to be defective. The product must be returned to a service facility
designated by Scan-Sense for warranty service or repair.
The foregoing warranty will not apply to defects resulting from improper
or inadequate maintenance by buyer, buyer supplied software or
interfacing, unauthorised modification or misuse, operation outside of
the environmental specifications for the product, or improper site
preparation or maintenance. No other warranty is expressed or implied.
Scan-Sense shall not be liable for any direct, indirect, special, incidental,
or consequential damages, whether based on contract, tort, or any other
legal theory.
The warranty does not cover the internal rechargeable battery.
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PM105 user’s manual
The manual
This Manual is for reference only. Specifications may change at any
time.
Introduction
The PM105 is a series of digital portable pressure meters for
commissioning, service, calibration and maintenance applications.
The unit is light weight and ergonomically designed for on-site
applications. PM105 gauge is completely self-contained with integral
pressure sensor (precision thin-film strain gauge), CPU-based signal
conditioning surface mount electronics, 4-digit LCD display and internal
battery power supply. An internal temperature sensor compensates for
thermal zero and sensitivity errors which combined with an optimised
autorange facility ensures excellent accuracy over a wide pressure
range.
Unpacking
On receipt, please check all received parts. A standard PM105 system
includes the following:
Pressure meter
Battery charger
Calibration report
User’s manual
Optional EEx-certificate
PM105 is equiped with a 7,2V NiCad rechargeable battery.
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PM105 user’s manual
Operational hints
When a closed volumetric system is subjected to a change in temperature,
the pressure in the system will change as a function of the expansion of
the liquid media. The smaller the volume in the system, the larger this
effect will be. Likewise, when a system is put under pressure, the tubes,
cavity etc., will expand somewhat over time, and hence the volume will
increase and the pressure will drop as a function of the increased volume.
When pressure is introduced into the PM105 system by the pump, a
large amount of energy is stored in the unit. When doing so, the
temperature of the oil will increase slightly, as part of the introduced
energy. For this reason, and the reasons listed above, the indicated
pressure will drop slightly over time, as the system stabilises its increased
temperature and the expansion of the tubes etc. Depending on the
applied this will normally take a few minutes.
If a pressure is generated, e.g. 200 Bar, and then dropped quickly down
to e.g. 100 Bar, the reverse function, a slight increase in the pressure
will occur, for the same reasons.
If the ambient temperature changes over time, and the unit is set to a
fixed pressure, the reading will change as a function of the change in
temperature.
The above is a normal physical behaviour, and should be taken into
account in the operational procedures.
PM105 is temperature compensated over the entire temperature range,
and as such can be used with the listed accuracy. In order to obtain full
accuracy it is important to let the PM105 obtain the ambient temperature
in the actual measuring environment. This process may take
approximently 3 hours.
Particular attention should be made to the pressure gaskets fitted
between the PM105 and the measurement pressure source. Ensure
that the correct size gasket is fitted for the selected pressure inlet adaptor,
and that the pressure gasket faces are undamaged and free from
contamination (e.g. sand, grit etc.).
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PM105 user’s manual
Basic functions
The various functions are selected from the key panel.
ON/OFF
Switches the unit on or off. When switched on the
PM105 is initialised and starts to measure in the unit
“Bar” as default.
ZERO
Sets the displayed pressure value to zero. (+/- 0.000)
within the limit of 0 to 125% of full scale. If the
pressure exceeds this limit, the display will show
“HI HI”. The pressure must then be relieved to
prevent damage.
TEST
Simulates applied pressure, The value on the display
should be in accordance with the value indicated on
rear panel as «test value». The unit must not be
pressurised during this test.
PEAK-HOLD Toggles the device between normal operation and
peak hold. Peak hold is capturing transient pressure
peak changes with a duration of at least 50 msec.
The display will show “ PH” when Peak Hold is
engaged.
BAR/PSI
Toggles between measuring units “Bar or “PSI”.
The display indicates the unit selected with an
pointing arrow.
.
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PM105 user’s manual
Operating supplies
The PM105 is a complete self-contained instrument and does not require
additional supplies (i.e. replaceable battery, hydraulic oil etc), for normal
operation.
Trouble shooting
K ey
Problem
ON/OFF Nothing in the display.
Remedy
Re- charge the battery.
ZERO
Pressure applied to the inlet
The display does not read port exceeds "zero offset"
"0000" when the "ZERO" range. Reduce the pressure
button is pressed.
at the inlet and repeat the
zeroing operation.
TE S T
The displayed value is not
Perform a zero adjustment
in accordance with the
prior to pressing the test
stated test value when the
button.
test button is pressed.
Transients may be less than
50msec in duration and
therefore not stored.
Confirm if the peak- hold
function is toggled on.
PEAK
HOLD
No transient pressure
peaks are recorded.
BAR
PSI
Displayed value does not Make sure that the correct
seem to be in accordance measuring unit is selected
with the applied pressure. with the bar/PSI buttons.
If these remedy’s don’t solve the problem, the PM105 probably needs
to be serviced. Please send it to your supplier. Please include an accurate
description of the problem.
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PM105 user’s manual
Service and recalibration
Any instrument requires periodical recalibration to comply with the stated
accuracy. Please refer to the enclosed test report for recalibration date.
Please return your instrument to your supplier on the given recalibration
date for recalibration if you need to maintain a valid calibration of the
PM105.
This instrument is fully digital, without any trimmers. The unit must be
serviced and recalibrated by authorised distributors with calibration
equipment and software.
Definition of terminology
Due to various standards and to variations in the understanding of
those, the above list is a definition of terms, used for the calibration
and certification of our products.
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PM105 user’s manual
Notice
Systems with digital display
(i.e. PC400, PC700, PM105)
If the system is specified as 0.05% FS BSL accuracy, this means that
the maximum deviation on a 400 Bar unit can be:
(+/- 0.05% FS) + (+/- 1 resolution unit) = 0.2 + 0.1 = 0.3 Bar above
100 Bar and:
0.2 + 0.05 = 0.25 Bar below 100 bar.
FS always means the full range of the unit, independent of any autorange on the instrument, since this is related to the transducer, and should
be used in the calculations.
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PM105 user’s manual
Specifications
Display:
12,5mm LCD, 4 digit
Physical dimensions:
92x98x33 mm (WxHxD
Weight:
550g
Pressure ranges:
(Bar G)
2 x 0,001
10 x 0,001
20 x 0,001
50 x 0,01
100 x 0,01
200 x 0,1
450 x 0,1
700 x 0,1
Pressure overload:
FS x 1,5
Accuracy:
Better than 0.1% (or 0,05%) combined error
FS (Includes non- linearity, repeatability, zero
and sensitivity temperature effects)
Pressure element
construction:
Wetted parts, 15- 5- PH, stainless steel.
Housing constr.:
Extruded aluminium (Anodised).
Units of measurement: Bar or PSI (selectable).
Dynamic response:
(Peak hold) 50 mS.
Pressure inlet:
1/4'' BSP Female.
Process temperature:
- 10°C to +60°C
Operating temp.:
(environmental) - 10°C to +50°C.
Process media:
All liquids or gases compatible with 15- 5- PH
stainless steel.
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PM105 user’s manual
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Display refresh rate:
4 times per second.
Power:
Internal 7,2V rechargeable NiCad battery.
Approximently 20 hours operation between
each recharging.
Charger:
10mA constant current.
12- 14 hours charging time.
Calibration:
Traceable to international standards.
Refer to the enclosed calibrationcetificate for
the specific unit.
EEx/IS certification:
EEx ia IIC T5