MARTINDALE PM85 User manual

PM85 DIFFERENTIAL
MANOMETER
Instruction
Manual
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ALWAYS READ THESE INSTRUCTIONS BEFORE PROCEEDING
Thank you for buying one of our products. For safety and a full
understanding of its benefits please read this manual before use.
Technical support is available from 01923 441717 and
[e-mail].
CONTENTS
1 Safety Information 1
1.1 Meaning of Symbols and Markings 1
1.2 Precautions 2
2 Introduction 3
2.1 Inspection 3
2.2 Description 3
2.3 Accessories 3
2.4 Battery Installation 3
3 Operation 4
3.1 Low Battery Indication 4
3.2 Description of Press Buttons 4
3.3 Description of LCD Symbols 4
3.4 Power On/Off 5
3.5 Auto Power Off 5
3.6 Backlight 5
3.7 Set Mode 5
3.8 Zero Function 6
3.9 Measurement Mode 7
3.10 Hold Mode 7
4 Maintenance 9
4.1 Battery Replacement 9
4.2 Calibration 9
4.3 Cleaning 9
4.4 Repair & Service 10
4.5 Storage Conditions 10
5 Warranty 11
Specifications
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1 SAFETY INFORMATION
REMEMBER: SAFETY IS NO ACCIDENT
These instructions contain both information and warnings that are
necessary for the safe operation and maintenance of this product. It
is recommended that you read the instructions carefully and ensure
that the contents are fully understood. Failure to understand and to
comply with the warnings and instructions can result in serious injury,
damage or even death.
Particular attention should be paid to the Warnings, Precautions and
Technical Specifications.
Please keep these instructions for future reference. Updated
instructions and product information are available at:
www.martindale-electric.co.uk
1.1 Meaning of Symbols and Markings
Caution - risk of danger and refer to instructions
Equipment complies with relevant EU Directives
End of life disposal of this equipment should be in
accordance with relevant EU Directives.
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1.2 Precautions
This product has been designed with your safety in mind, but please
pay attention to the following warnings and cautions before use.
Cautions
The PM85 must only be used by a skilled and competent person
who is familiar with the relevant regulations, the safety risks involved
and the consequent normal safe working practices, and under the
conditions and for the purposes for which it has been constructed and
specified.
The maximum pressure on either port must not exceed 29 psi.
Before use check the unit for cracks or any other damage. Make
sure the unit is free from dust, grease and moisture. Do not use if
damaged.
Avoid severe mechanical shock or vibration and extreme temperature.
To avoid possible corrosion from leaking batteries, remove the
batteries if discharged, or when the unit is not in use for an extended
period.
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2. INTRODUCTION
2.1 Inspection
Examine the shipping carton for any sign of damage. Inspect the unit
and any accessories for damage. If there is any damage then consult
your distributor immediately.
2.2 Description
The Martindale PM85 has the following functions and features:
Differential pressure measurement to 1.45psi (100mbar)
8 selectable units of measurement
Air speed measurement using a pitot tube.
Hold, Max, Min, Max-Min and Average functions
Auto power off
Low battery indication
LCD display with backlight
Pocket-sized, compact body
2.3 Accessories
The PM85 comes with the following accessories:
Protective cover for safe storage
2 x 1.5V AAA batteries
Detachable carry strap
Instructions
Accessories not included:
Pitot tube
2.4 Battery Installation
Refer to Section 4.1 (Battery Replacement) for the battery installation
instructions for the PM85.
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3. OPERATION
3.1 Low Battery Indication
If the is displayed, the battery needs replacing as measurement
accuracy can no longer be guaranteed (see section 4.1 Battery
Replacement).
3.2 Description of Press Buttons
Selects Set mode settings
Turns on/off the PM85, turns on backlight
MODE
Selects Set mode and Hold mode functions
3.3 Description of LCD symbols
APO Auto power off is active
Indicates low batteries
HOLD Hold mode is active
MAX Maximum recorded reading is displayed
MIN Minimum recorded reading is displayed
MAX-MIN The difference between maximum and
minimum recorded readings is displayed
AVG The average of recorded readings is displayed
mmH2O mmHg
psi inH2O inHg
hPa, mbar Pa
Unit of pressure measurement being displayed
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fpm m/s Unit of air speed being displayed
Density (kg/m3)
(lb/ft3)Unit of density being displayed
Indicates press of button required
ENTER Indicates press of MODE button required
3.4 Power On/Off
To power on in Measurement mode, press for less than 1
second.
To power on in Set mode, press for 2 seconds.
To power off the unit, press for 2 seconds.
3.5 Auto Power Off (APO)
If the unit is inactive for a period of 10 minutes it will automatically
power off.
To disable this function refer to section 3.7.
3.6 Backlight
Press for less than 1 second to turn on the backlight.
It will automatically turn off after 15 seconds if there is no further
operation of the unit.
3.7 Set Mode
This mode sets the following in the order shown:
Unit of measurement;
Density of the medium (only if fpm or m/s is selected);
Auto power off (APO).
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The Set mode is selected by pressing for 2 seconds with the unit
powered off.
If the unit is switched off while in the Set mode, any changed settings
will not be saved, and the unit will revert to the previous settings.
Unit of Measurement
The LCD will flash the current set unit of measurement after entering
the Set mode.
Press to select mmH2O, mmHg, psi, inH2O, inHg, hPa, mbar,
Pa or if fitted with the optional pitot tube fpm or m/s may be selected.
Press MODE to advance to the next function.
Density (only if fpm or m/s is selected)
The LCD will display Density and the first numerical digit after the
decimal point will flash.
Press to increment the digit from 0 to 9 as required. After 9 the
digit will step back to 0.
Press MODE to advance to the next digit that will now flash.
Press to increment from 0 to 9 as required.
Press MODE to advance to the last digit that will now flash.
Press to increment from 0 to 9 as required.
Press MODE to advance to the next function.
APO
The LCD will display APO.
Press to select ON or OFF as required.
Press MODE to save settings and return to the Measurement mode.
3.8 Zero Function
Pressure differences up to 10hPA can be zeroed.
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The zero function will not operate if the pressure difference is >10hPa.
To zero the PM85, disconnect it from the pressure source, and press
.
3.9 Measurement Mode
It is advisable to zero the PM85 before making measurements (see
section 3.8).
Taking all necessary safety precautions connect the PM85 to the
pressure sources to be measured.
Read the differential pressure from the display.
While in Measurement mode, all measured values are recorded at a
rate of once per second for use by the Hold mode (See section 3.10).
3.10 Hold Mode
The PM85 has the facility to display the maximum reading, the
minimum reading, the difference between maximum and minimum
readings and the average of the recorded readings.
To enter the Hold mode press MODE while in Measurement mode.
The LCD will display HOLD and the last measured value will be held
on the display.
Successive presses of the MODE button will display the following in
sequence:
HOLD MAX - maximum recorded reading;
HOLD MIN - minimum recorded reading;
HOLD MAX-MIN - difference between max and min recorded
readings;
HOLD AVG - average of the recorded readings (Only for air speed
measurement).
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The unit will return to the Measurement mode at the end of the
above sequence.
To clear the recorded readings, press MODE for 2 seconds
at any point in the above sequence. The unit will return to the
Measurement mode.
Note: The Hold mode will not function until at least 3 measurements
have been stored to memory.
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4. MAINTENANCE
4.1 Battery Replacement
The battery compartment is on the rear of the unit.
Push the battery cover up towards the inlet ports and lift away from
the back of the unit.
Replace with 2 new AAA batteries (IEC LR03, NEDA 24A), observing
correct polarity.
Replace the battery cover.
Note: Do not mix old and new batteries.
4.2 Calibration
To maintain the integrity of measurements made using your
instrument, Martindale Electric recommends that it is returned at least
once a year to an approved Calibration Laboratory for recalibration
and certification.
Martindale Electric is pleased to offer you this service. Please contact
our Service Department for details.
Email: [e-mail]
Tel: [phone]
4.3 Cleaning
If contamination is found, clean with a damp soft cloth and if
necessary a mild detergent. Do not use abrasives, abrasive solvents,
or detergents which can cause damage to the unit. If a mild detergent
is used, the unit should subsequently be thoroughly cleaned with a
water dampened soft cloth. After cleaning, dry and allow to remain in
a dry environment for 2 hours before use.
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4.4 Repair & Service
There are no user serviceable parts in this unit other than those that
may be described in section 4. Return to Martindale Electric if faulty.
Our service department will quote promptly to repair any fault that
occurs outside the guarantee period.
Before the unit is returned, please ensure that you have checked the
unit and batteries.
4.5 Storage Conditions
The instrument should be kept in warm dry conditions away from
direct sources of heat or sunlight, and in such a manner as to
preserve the working life of the unit. It is strongly advised that the
unit is not kept in a tool box where other tools may damage it.
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5. WARRANTY AND LIMITATION OF LIABILITY
This Martindale product is warranted to be free from defects in
material and workmanship under normal use and service. The
warranty period is 2 years and begins on the date of receipt by the
end user. This warranty extends only to the original buyer or end-
user customer, and does not apply to fuses, disposable batteries,
test leads or to any product which, in Martindale’s opinion, has been
misused, altered, neglected, contaminated, or damaged by accident
or abnormal conditions of operation, handling or storage.
Martindale authorised resellers shall extend this warranty on new and
unused products to end-user customers only but have no authority to
extend a greater or different warranty on behalf of Martindale.
Martindale’s warranty obligation is limited, at Martindale’s option, to
refund of the purchase price, free of charge repair, or replacement of
a defective product which is returned to Martindale within the warranty
period.
This warranty is the buyer’s sole and exclusive remedy and is in lieu
of all other warranties, expressed or implied, including but not limited
to any implied warranty of merchantability or fitness for a particular
purpose. Martindale shall not be liable for any special, indirect,
incidental or consequential damages or losses, including loss of data,
arising from any cause or theory.
Since some jurisdictions do not allow limitation of the term of
an implied warranty, or exclusion or limitation of incidental or
consequential damages, the limitations and exclusions of this warranty
may not apply to every buyer. If any part of any provision of this
warranty is held invalid or unenforceable by a court or other decision-
maker of competent jurisdiction, such holding will not affect the validity
or enforceability of any other provision or other part of that provision.
Nothing in this statement reduces your statutory rights.
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SpeciÀcation
PM85
Differential manometer
All specified accuracies are at 23°C ± 5°C, <70% R.H. for 1 year.
Temperature coefficient: 0.1 x (specified accuracy) per °C, (0°C to 18°C, 28°C
to 50°C).
PRESSURE
Unit of
measurement Range Resolution
mmH2O 0 to 1019.7 0.1 mmH2O
mmHg 0 to 75 0.01 mmHg
psi 0 to 1.45 0.001 psi
inH2O 0 to 40.14 0.01 inH2O
inHg 0 to 2.953 0.001 inHg
hPa 0 to 100 0.01 hPa
mbar 0 to 100 0.01 mbar
Pa 0 to 10000 1 Pa
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SpeciÀcation
PM85
Differential manometer
Accuracy: 0 to 0.3 hPa ± 0.03 hPa
0.3 to 1 hPa ± 0.05 hPa
1 to 100 hPa ± (0.1 hPa+1.5% of reading)
0 to 3 mmH2O ± 0.3 mmH2O
3 to 10.2 mmH2O ± 0.5 mmH2O
10.2 to 1019.7 mmH2O ± (1.02 mmH2O + 1.5% of reading)
GENERAL
Display: liquid crystal display
Measurement rate: twice per second
Power: 2 x 1.5V, AAA alkaline batteries (IEC LR03, NEDA 24A)
Continuous operating time: 85 hours typical.
Low battery indication: the is displayed when the battery voltage drops
below the operating level
Auto power off: after approx. 10 minutes
Dimensions: 132.9(L) x 50.9(W) x 24.7(D) mm
Weight: 113g approx. including batteries
Includes: protective cover, 2 x 1.5V AAA batteries, detachable carry strap and
instructions
ENVIRONMENTAL
Operating environment: 0°C to 50°C at <70% R.H.
Storage environment: -20°C to 60°C, <80% R.H. with batteries removed.
EMC
Conforms to BS EN61326-1
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PM85 instructions rev1.indd 1 19/06/2014 09:59:12
MartindaleElectricCoLtd,
Metrohm House, Imperial Park, Imperial Way,
Watford, Hertfordshire, WD24 4PP, UK
+Tel: [phone] Fax: [phone]
E-mail:[email protected]
Website:www.martindale-electric.co.uk
©2014MartindaleElectricCompanyLtd.
Registered in England No. 3387451. E. & O.E. LITPM85 Rev1