Michell Instruments Easidew Portable HP User Manual

Easidew Portable

High Pressure Version

User’s Manual

97120 Issue 2.2

March 2016

Please fi ll out the form(s) below for each instrument that has been purchased.

Use this information when contacting Michell Instruments for service purposes.

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Code

Serial Number

Invoice Date

Location of Instrument

Tag No

Analyzer

Code

Serial Number

Invoice Date

Location of Instrument

Tag No

Analyzer

Code

Serial Number

Invoice Date

Location of Instrument

Tag No

Easidew Portable HP

For Michell Instruments' contact information please go to

www.michell.com

© 2016 Michell Instruments

This document is the property of Michell Instruments Ltd. and may not be copied or

otherwise reproduced, communicated in any way to third parties, nor stored in any Data

Processing System without the express written authorization of Michell Instruments Ltd.

Easidew Portable HP User’s Manual

Contents

Safety ................................................................................................................................ v

Electrical Safety ........................................................................................................... v

Pressure Safety ............................................................................................................ v

Toxic Materials ............................................................................................................. v

Repair and Maintenance ............................................................................................... v

Calibration ................................................................................................................... v

Safety Conformity ........................................................................................................ v

Abbreviations ......................................................................................................................vi

Warnings ............................................................................................................................vi

1 INTRODUCTION ................................................................................................1

2 INSTALLATION ..................................................................................................2

3 OPERATION ......................................................................................................4

3.1 General Operation .............................................................................................. 4

3.2 Measuring Dew Points Below -40°C (-40°F) .......................................................... 5

3.3 User Controls ..................................................................................................... 6

4 GOOD MEASUREMENT PRACTICE .......................................................................7

5 MAINTENANCE ................................................................................................11

5.1 Calibration ....................................................................................................... 11

5.2 Sensor / Battery Replacement ........................................................................... 11

5.3 Filter Cartridge Replacement ............................................................................. 13

5.4 Checking the Easidew Portable Electronics Calibration ......................................... 13

5.5 List of Spares ................................................................................................... 13

5.6 Troubleshooting ................................................................................................ 14

Figures

Figure 1 Swagelok® Fitting Instructions .....................................................................3

Figure 2 User Controls .............................................................................................6

Figure 3 2-Wire Connection - View Showing Rear of Connector Terminal Block ...........13

Appendices

Appendix A Technical Specifi cations .............................................................................. 16

Appendix B EU Declaration of Conformity......................................................................18

Appendix C Quality, Recycling & Warranty Information ...................................................20

C.1 Recycling Policy ........................................................................... 20

C.2 WEEE And RoHS Compliance ........................................................ 20

C.3 Manufacturing Quality ..................................................................20

C.4 Calibration Facilities ..................................................................... 21

C.5 Return Policy ...............................................................................21

C.6 Warranty ..................................................................................... 21

Appendix D Decontamination Declaration ...................................................................... 23

iv 97120 Issue 2.2, March 2016

Easidew Portable HP User’s Manual

Safety

The manufacturer has designed this equipment to be safe when operated using the procedures
detailed in this manual. The user must not use this equipment for any other purpose than that
stated. Do not apply values greater than the maximum value stated.

This manual contains operating and safety instructions, which must be followed to ensure the safe
operation and to maintain the equipment in a safe condition. The safety instructions are either
warnings or cautions issued to protect the user and the equipment from injury or damage. Use
qualifi ed personnel and good engineering practice for all procedures in this manual.

Electrical Safety

The instrument is designed to be completely safe when used with options and accessories supplied by
the manufacturer for use with the instrument. The instrument is powered by an internally mounted
rechargeable battery. The input power supply voltage limits for the battery charger supplied with the
instrument are 90 to 264 V AC, 47/63 Hz.

NOTE: No other battery charger unit, other than that supplied with the instrument
should be used.

NOTE: Do not allow the battery to fully discharge.

Pressure Safety

DO NOT permit pressures greater than the safe working pressure to be applied to the instrument.
The specifi ed safe working pressure is 300 barg (4350 psig). Refer to the Technical Specifi cations in
Appendix A.

Toxic Materials

The use of hazardous materials in the construction of this instrument has been minimized. During
normal operation it is not possible for the user to come into contact with any hazardous substance
which might be employed in the construction of the instrument. Care should, however, be exercised
during maintenance and the disposal of certain parts.

Repair and Maintenance

The instrument must be maintained either by the manufacturer or an accredited service agent. Refer
to www.michell.com for details of Michell Instruments’ worldwide offi ces contact information.

Calibration

The recommended calibration interval for the Easidew Portable is one year, unless otherwise
specifi ed by Michell Instruments Ltd. The instrument should be returned to the manufacturer, Michell
Instruments, or one of their accredited service agents for re-calibration (go to www.michell.com for
contact information).

Safety Conformity

This product meets the essential protection requirements of the relevant EU directives. Further
details of applied standards may be found in the product specifi cation.

Michell Instruments v

Abbreviations

!

The following abbreviations are used in this manual:

AC alternating current

atm pressure unit (atmosphere)

barg pressure unit (=100 kP or 0.987 atm) gauge

°C degrees Celsius

°F degrees Fahrenheit

dp dew point

ft feet

kg kilogram

lb pound

Easidew Portable HP User’s Manual

mA milliampere

m meter

mm millimeter

MPa megapascal

Nl/min normal liters per minute

psig pound(s) per square inch (gauge)

scfh standard cubic feet per hour

μm micrometer

Ω ohm

V Volts

Warnings

The following general warnings listed below are applicable to this instrument. They are
repeated in the text in the appropriate locations.

Where this hazard warning symbol appears in the following

sections, it is used to indicate areas where potentially hazardous

operations need to be carried out.

vi 97120 Issue 2.2, March 2016

Easidew Portable HP User’s Manual

1 INTRODUCTION

The Easidew Portable comprises an Easidew sensor fi tted into a sample block with an
integrated fi lter cartridge, and Swagelok® tube couplings on the gas inlet and outlet.
The measured dew point from the sensor is shown on the clear red LED display on the
front panel of the instrument.

The Easidew Portable can be supplied with either °C or °F dew-point measurement
units.

A 4-20 mA analog output is provided for connection to a chart recorder, data-logger or
computer system, so dew-point trends can be analyzed over time.

The electronics are housed in a rugged Peli case, providing NEMA 6 protection when the
lid is closed. The case is supplied with a lifetime guarantee.

INTRODUCTION

The Easidew Portable is powered by a rechargeable NiMH battery pack, giving between
12 and 16 hours of measurement time from a full charge. The instrument is delivered
complete with a universal battery charger stored in the lid. It takes 16 hours to fully
charge the battery pack, during which time the instrument can be switched on or
off. The charger is suitable to connect power to the instrument indefi nitely, but it is
recommended to allow the battery pack to go through a full charge-discharge cycle at
least once per month. A battery charge indicator on the instrument front panel warns
when the battery is low.

All Michell Ceramic Moisture Sensors are subject to a 13-point calibration, where their
performance is characterized against a fundamental reference hygrometer. This process,
and subsequent quality testing, ensures that all sensors behave optimally before they
are used in the fi eld. A calibration certifi cate traceable to UK National Physical Laboratory
(NPL) and the US National Institute of Standards and Technology (NIST) is provided
from Michell Instruments' accredited laboratory. The certifi cate shows 7 points of the
13-point calibration.

Michell Instruments 1

INSTALLATION

2 INSTALLATION

On delivery, please check that all the following standard components are present in the
packing box:

• Easidew Portable

®

• Swagelok

• Swagelok

• Battery charger

• Mains lead

• 3 pole ¼” jack plug (inside lid)

• User manual

• Certifi cate of calibration

6mm metering valve

®

6mm tube port adaptor

Easidew Portable HP User’s Manual

Before using the Easidew for the fi rst time it is recommended that the battery pack is
charged for a minimum of 12 hours.

The case has a pressure relief valve on the exterior below the handle. When closed,
the case is completely sealed. If the instrument is taken through altitude changes, a

pressure differential will occur within the case. If this occurs: Before opening the lid,

open the black pressure relief valve by one turn (anti-clockwise) for a few seconds. This
will equalize the pressures. When the case has been opened, ensure that the pressure
relief valve has been fully closed.

®

The supplied Swagelok

port adaptor needs to be assembled before the metering valve

can be connected to the instrument. See below:

1. Slip the nut over the
machined ferrule end of
the port connector

2. Insert the port connector
into the end connection and
finger-tighten the nut

3. While holding the fitting
body steady, tighten the
nut one-quarter turn

Do not use the Swagelok gap inspection

!

gauge with machined ferrule ends.

2 97120 Issue 2.2, March 2016

Easidew Portable HP User’s Manual

NOTE: Connect the machined ferrule end before
connecting the tube adapter end

INSTALLATION

4. Insert the tube adapter until it rests firmly on
the shoulder of the Swagelok

®

tube fitting body.

Finger-tighten the nut.

5. Mark the nut at the 6 o’clock position. While holding
the fitting body steady, tighten the nut 1¼ turns to the
9 o’clock position.

Figure 1

Swagelok® Fitting Instructions

© 2001-2010 Swagelok Company
September 2010, R4 MS-12-12

Michell Instruments 3

OPERATION

!

!

3 OPERATION

Easidew Portable HP User’s Manual

Maximum operating pressure is 300 barg (4350 psig).

It is important that both the gas fi ttings and the Swagelok

Failure to do so will affect the instrument's pressure rating.

3.1 General Operation

To operate the Easidew Portable, follow these instructions:

1. Ensure that both the gas fi ttings and the Swagelok® tube fi ttings are fully
tightened before use.

2. For measurement at line pressure, connect the supplied metering valve to
the outlet of the instrument. For measurement at atmospheric pressure,
connect the metering valve to the inlet.

3. Gas under test should be restricted to fl ow rates between 1 and 5 Nl/min
(2 and 10.6 scfh) and pressures from atmospheric to 30 MPa (300 barg
/ 4350 psig).

4. Connect the sample gas supply line to the instrument

tube fi ttings are correctly tightened before use.

Gas In port.

®

5. Connect the sample gas vent line to the instrument

6. Switch the instrument on. The display will begin to change as the sensor
responds to the applied dew point.

7. Allow the gas to fl ow until the display shows a stable reading. Typically
this would be around 15 to 30 minutes for spot checks at dew points of

-40°C (-40°F) and above.

8. Switch the unit off and disconnect the sample lines.

Before disconnecting the Easidew Portable from the gas line

it is essential to vent the system to atmospheric pressure,

otherwise severe injury could result.

NOTE: Filters are essential for potentially dirty/contaminated gases – the
fi tted fi lter should be checked before and after use and replaced regularly - as
required.

NOTE: The High Pressure version features two gas fi ttings with 4mm orifi ces
that give no restriction and are engraved with a number 1. Atmospheric or
line pressure measurement is achieved by changing the positioning of the
metering valve as per the General Operation instructions above.

Gas Out port.

4 97120 Issue 2.2, March 2016

Easidew Portable HP User’s Manual

3.2 Measuring Dew Points Below -40°C (-40°F)

Due to the signifi cantly lower levels of moisture present at dew points of this level, the
response times of the sensor will be signifi cantly increased. The table below offers an
approximate guide to the times taken for the instrument to stabilize at a given dew
point (from a starting point of 10°Cdp (50°Fdp) ambient):

OPERATION

Target Dew Point

°C °F

-30 -22 15

-40 -40 30

-50 -58 60

-60 -76 180

The Easidew sensor fi tted to the Easidew Portable is designed and calibrated to measure
dew points as low as -100°C (-148°F). However, due to the large internal volume of
the sample block, the hygroscopic nature of the built-in fi lter, and the potential of the
gas fi ttings to trap moisture at very low dew points, we recommend that the Easidew
Portable is not used to measure dew points below -60°C (-76°F). Suitable alternative
solutions in our range would be the Easidew Online, Pura fi xed installations, MDM300
Portable, or our cooled mirror range of instruments.

T100 Response Time

(mins)

Michell Instruments 5

OPERATION

3.3 User Controls

Easidew Portable HP User’s Manual

2

1

EASIDEW Portable Hygrometer

h

Power Fuse

°Cdp

4-20

mA

O/P

BATTERY

Battery

Level

34

h

h

o

-

h

Battery
Charger

h

h

h

5

6

Gas Out

Figure 2

§

User Controls

Filter Fitted

Indicates the measured dew point in °C from -100 to +20 (-148
to +68°F).
Under certain conditions the following error messages may be

1 Digital Display

displayed:

ErrL = Sensor under range
ErrH = Sensor over range
Err I = Sensor fault or sensor disconnected

2 Power Switch Switches the Easidew Portable ON or OFF.

This 1A quick blow fuse provides protection for the display

3 Fuse

electronics in the event of a fault with the charger or battery
pack. Another protection fuse is located on the display PCB.

Located in the top right hand corner of the instrument, it can be
accessed by removing two screws (5). The battery pack can be
recharged using the supplied charger, via the battery-charging

NiMH Battery

4

Pack

socket and should be recharged whenever the battery level
meter is in the red region.

The battery pack will charge if the instrument is switched ON or
OFF. However, the battery level meter will only indicate when
the instrument is switched on.

The Easidew portable features an analog output socket that

Analog Output

6

Socket

provides a linear 4-20 mA current loop, scaled to -100 to +20°C
(-148 to +68°F) dew point. This allowed the instrument to be
connected to a chart recorder, data logger or PC to enable dew­point trends to be analyzed over time.

The Easidew Portable can be used for measurements at line
pressure (up to 300 barg (4350 psig)) or atmospheric pressure.

®

tube fi ttings are supplied for use with 6mm OD

7 Gas Fittings

Swagelok
stainless steel tube. There is a 32mm particulate fi lter (99.5%
removal of 0.1 micron particles) fi tted as standard under the

Gas In port position.

§

h

Gas In

7

6 97120 Issue 2.2, March 2016

Easidew Portable HP User’s Manual

4 GOOD MEASUREMENT PRACTICE

Measurement of moisture content is a complex subject, but does not need to be diffi cult.
This section aims to explain the common mistakes made in measurement situations, the
causes of the problem, and how to avoid them. Mistakes and bad practices can cause
the measurement to vary from the expectation; therefore a good sampling technique is
crucial for accurate and reliable results.

Transpiration and Sampling Materials

- 20

- 30

GOOD MEASUREMENT PRACTICE

- 40

- 50

Dew point (ºC)

- 60

- 70

12345

nickel

stainless steel

Time (hours)

nylon

copper

polyethylene

PTFE

All materials are permeable to water vapor, as the water molecule is extremely small
compared to the structure of solids, even when compared to the crystalline structure of
metals. The graph to the right shows the dew point inside tubing of different materials
when purged with very dry gas, where the exterior of the tubing is in the ambient
environment.

Many materials contain moisture as part of their structure, particularly organic materials
(natural or synthetic), salts (or anything which contains them) and anything which
has small pores. It is important to ensure that the materials used are suitable for the
application.

If the partial water vapor pressure exerted on the outside of a compressed air line is
higher than on the inside, the atmospheric water vapor will naturally push through the
porous medium causing water to migrate into the pressurized air line. This effect is
called transpiration.

Michell Instruments 7

GOOD MEASUREMENT PRACTICE

Adsorption and Desorption

Adsorption is the adhesion of atoms, ions, or molecules from a gas, liquid, or dissolved
solid to the surface of a material, creating a fi lm. The rate of adsorption is increased at
higher pressures and lower temperatures.

Desorption is the release of a substance from or through the surface of a material. In
constant environmental conditions, an adsorbed substance will remain on a surface
almost indefi nitely. However, as the temperature rises, so does the likelihood of
desorption occurring.

In practical terms, as the temperature of the environment fl uctuates, water molecules
are adsorbed and desorbed from the internal surfaces of the sample tubing, causing
small fl uctuations in the measured dew point.

Easidew Portable HP User’s Manual

Sample Tubing Length

The sample point should always be as close to the critical measurement point as possible,
in order to obtain a truly representative measurement. The length of the sample line
to the sensor or instrument should be as short as possible. Interconnection points and
valves trap moisture, so using the simplest sampling arrangement possible will reduce
the time it takes for the sample system to dry out when purged with dry gas.

Over a long tubing run, water will inevitably migrate into any line, and the effects of
adsorption and desorption will become more apparent. It is clear from the graph shown
above that the best materials to resist transpiration are stainless steel and PTFE.

Trapped Moisture

Dead volumes (areas which are not in a direct fl ow path) in sample lines, hold onto
water molecules which are slowly released into the passing gas; this results in increased
purge and response times, and wetter than expected readings. Hygroscopic materials
in fi lters, valves (e.g. rubber from pressure regulators) or any other parts of the system
can also trap moisture.

8 97120 Issue 2.2, March 2016

Easidew Portable HP User’s Manual

Sample Conditioning

Sample conditioning is often necessary to avoid exposure of sensitive measuring
components to liquids and other contaminants which may cause damage or affect the
accuracy over time, depending on the measurement technology.

Particulate fi lters are used for removing dirt, rust, scale and any other solids that may
be in a sample stream. For protection against liquids, a coalescing fi lter should be used.
The membrane fi lter is a more expensive but highly effective alternative to a coalescing
fi lter. It provides protection from liquid droplets, and can even stop fl ow to the analyzer
completely when a large slug of liquid is encountered.

Condensation and Leaks

GOOD MEASUREMENT PRACTICE

Dewpoint > T Dewpoint < T

Maintaining the temperature of the sample system tubing above the dew point of the
sample is vital to prevent condensation. Any condensation invalidates the sampling
process as it changes the water vapor content of the gas being measured. Condensed
liquid can alter the humidity elsewhere by dripping or running to other locations where
it may re-evaporate.

The integrity of all connections is also an important consideration, especially when
sampling low dew points at an elevated pressure. If a small leak occurs in a high
pressure line, gas will leak out but vortices at the leak point and a negative vapor
pressure differential will also allow water vapor to contaminate the fl ow.

Michell Instruments 9

GOOD MEASUREMENT PRACTICE

!

!

Flow Rates

Theoretically fl ow rate has no direct effect on the measured moisture content, but in
practice it can have unanticipated effects on response speed and accuracy. The optimal
fl ow rate varies depending on the measurement technology, and can always be found
in the instrument or sensor manual.

An inadequate fl ow rate can:

• Accentuate adsorption and desorption effects on the gas passing
through the sampling system.

• Allow pockets of wet gas to remain undisturbed in a complex sampling
system, which will then gradually be released into the sample fl ow.

• Increase the chance of contamination from back diffusion: ambient air
that is wetter than the sample can fl ow from the exhaust back into the
system. A longer exhaust (sometimes called a pigtail) can also help
alleviate this problem.

Easidew Portable HP User’s Manual

• Slow the response of the sensor to changes in moisture content.

An excessively high fl ow rate can:

• Introduce back pressure, causing slower response times and
unpredictable effects on equipment such as humidity generators.

• Result in a reduction in heating capabilities of the sensor tile during the
initialization period. This is most apparent with gases that have a high
thermal conductivity such as hydrogen and helium.

Which Gases to Measure?

The Easidew Portable is suitable for measurement of the moisture content of a wide
variety of gases. In general, if the gas (in conjunction with water vapor) is not corrosive
to ceramics or base metals then it will be suitable for measurement.

POSSIBLE INJURY! The tubing, valves and other apparatus

attached to this instrument must be adequate for the

maximum pressure which will be applied, otherwise physical

injury to the operator or bystander is possible.

Before disconnecting the Easidew Portable from the gas line

it is essential to vent the system to atmospheric pressure,

otherwise severe injury could result.

10 97120 Issue 2.2, March 2016

Easidew Portable HP User’s Manual

5 MAINTENANCE

Routine maintenance of the Easidew Portable is confi ned to regular re-calibration of the
internal, removable Easidew sensor and replacement of the fi lter cartridge.

5.1 Calibration

The calibration of the internal sensor is traceable to national standards. For this reason
it should only be calibrated in an accredited, e.g. UK

Service (UKAS)

laboratory. If these facilities do not exist it is recommended that the sensor is returned
to the manufacturer, Michell Instruments, or an approved agent. A calibration certifi cate
bearing a seven-point calibration is issued with each sensor.

In most applications, annual re-calibration ensures that the stated accuracy of the
Easidew sensor is maintained.

or US

National Institute of Standards and Technology

MAINTENANCE

United Kingdom Accreditation

(NIST) standards

5.2 Sensor / Battery Replacement

To remove the sensor, or battery pack:

1. Ensure instrument is switched off and that the battery charger, current
output and any sampling components are also disconnected.

2. Remove and retain the 10 cross-head screws from the top plate.

3. Lift the small battery pack cover in the top right corner of the instrument.
A small fl at bladed screwdriver may be required to gently pry the edges
of the cover if it has become stuck to the waterproof seal underneath.
Removing this cover fi rst will make it easier to lift the entire top panel out
of the instrument.

4. Lift the top plate of the instrument out of the case. Disconnect the battery
pack before removing the top plate completely to prevent it from straining
on the attached cable. If only replacing the battery pack, do not follow
the next two steps.

5. Undo the screw from the centre of the sensor connecting plug and pull
off the connector.

6. Unscrew the sensor from the block.

Fitting the replacement is simply a reversal of the above procedure. When fi tting a new
sensor it may be necessary to change the alignment of the GDSN connector (see next
page).

Michell Instruments 11

MAINTENANCE

If the front panel prevents the connector from fi tting onto the sensor, follow the
instructions below:

• Completely unscrew the cable gland on the GDSN connector to release
the cable tension.

• Remove the locking screw from the back of the connector (retaining the
metal O-ring).

Easidew Portable HP User’s Manual

• Remove the connector block using a small screwdriver.

• Rotate the connector block and push it back into the connector housing.
Take care not to trap any wires against the hole for the locking screw.

X

12 97120 Issue 2.2, March 2016

Easidew Portable HP User’s Manual

• Replace the locking screw and cable gland.

5.3 Filter Cartridge Replacement

Unscrew the gas inlet fi tting to reveal the fi lter, which can then simply be removed for
checking or replacement.

MAINTENANCE

5.4 Checking the Easidew Portable Electronics Calibration

Supply
4-20 mA

h

PIN 1

PIN 3

Figure 3

To verify the display electronics are within calibration, a 4-20mA current source can be
connected in place of the sensor.

At 4 mA the display should show -100.0°Cdp ±0.5°C (-148°Fdp ±0.9°F)

At 20 mA the display should show +20.0°Cdp ±0.5°C ( +68°Fdp ±0.9°F)

If the displayed values are outside of this range, please contact Michell Instruments'
Service Department.

2-Wire Connection - View Showing Rear of Connector Terminal Block

h

(GND)

Screen/Shield

Optional

5.5 List of Spares

P/N Description

SSF-PF-10PK Pack of 10 particulate fi lter cartridges
EAP-BAT Replacement battery pack
EAP-CHR Replacement battery charger

Michell Instruments 13

MAINTENANCE

5.6 Troubleshooting

Symptom Cause Actions

Display shows “

Display shows “

ErrI”

ErrL”

Easidew Portable HP User’s Manual

Sensor disconnected
or sensor tile / sensor
thermistor fault.

NOTE: This error is
normally displayed
during the fi rst few
seconds while the
instrument is starting
up.

Sensor reading under­range.

Check sensor cable is securely
connected inside instrument.

Check instrument electronics with
4-20mA source.

Exchange sensor.

Check instrument electronics with
4-20mA source.

Display shows “

Display fl ickers on
and off.

Display off but
battery meter full.

ErrH”

Sensor current signal
< 4mA

Sensor tile open circuit.
Sensor reading over-

range.

Sensor current signal >
20mA

Sensor tile short circuit.

Battery voltage low. Connect charger.

Battery voltage low. Connect charger.

Exchange sensor.

Sensor may have been exposed
to saturation conditions or liquid
contamination. Check that fi lter and
sensor guard are clean and dry.

If liquid water has contacted sensor,
or sensor block, then disassemble
and dry thoroughly. After drying, it
is recommend to purge assembled
instrument with very dry (-75°Cdp
(-103°Fdp) / 1ppm
12 to 24 hours.

Exposure to other contaminants can
cause lasting damage and may require
sensor to be exchanged.

Check instrument electronics with
4-20mA source.

moisture) air for

V

14 97120 Issue 2.2, March 2016

Easidew Portable HP User’s Manual

APPENDIX A

Appendix A

Technical Specifi cations

Michell Instruments 15

APPENDIX A

Easidew Portable HP User’s Manual

Appendix A Technical Specifi cations

Performance

Measurement Technology Impedance
Measurement Ranges

Spot Checks
Online

Accuracy ±2°Cdp (±3.6°Fdp)
Run time 12 - 16 hours
Charge time 16 hours for maximum charge
Flow Rate 1 to 5 Nl/min (2.1 to 10.5 scfh)

-40 to +20°Cdp (-40 to +68°Fdp)

-100 to -40°Cdp (-148 to -40°Fdp)

Electrical Input/Output

Output

Power Supply Rechargeable NiMH battery pack, charger included

4-20 mA current maximum load
resistance 400 Ω

Operating Conditions

Operating Temperature -20 to +50°C (-4 to +122°F)
Storage Temperature -40 to +75°C (-40 to +167°F)
Operating Pressure Up to 30 MPa (300 barg / 4350 psig)

Mechanical Specifi cations

Display Flush mounted 3.5 digit red LED

Case

Weight 4kg (8.8lbs) total weight
Enclosure Rating

Case Closed
Sample Connections 6mm Swagelok

Sample Block

Filter Cartridge

Interchangeability Sensor is fully interchangeable with other Easidew products

Yellow propylene with charger and output connector stored in the
lid

NEMA Type 6

®

stainless steel tube fi ttings

Stainless steel, fully self-contained sample system with fi xed orifi ce
ports for fl ow control/pressure or atmospheric measurement and
built-in fi ltration using a standard drop-in cartridge

Removes 99.5% of particles ≥ 0.3 μm supplied with cartridge
installed. Spare cartridges are available (part no: SSF-PF-10PK)

16 97120 Issue 2.2, March 2016

Easidew Portable HP User’s Manual

APPENDIX B

Appendix B

EC Declaration of Conformity

Michell Instruments 17

APPENDIX B

Appendix B EU Declaration of Conformity

Easidew Portable HP User’s Manual

18 97120 Issue 2.2, March 2016

Easidew Portable HP User’s Manual

APPENDIX C

Appendix C

Quality, Recycling

& Warranty

Information

Michell Instruments 19

APPENDIX C

Easidew Portable HP User’s Manual

Appendix C Quality, Recycling & Warranty Information

C.1 Recycling Policy

Michell Instruments is concerned with the protection of the environment. It is our
commitment to reduce and eliminate from our operations, wherever possible, the use
of substances which may be harmful to the environment. Similarly, we are increasingly
using recyclable and/or recycled material in our business and products wherever it is
practical to do so.

To protect natural resources and to promote material reuse, please separate batteries
from other types of waste and recycle responsibly. If batteries are not properly disposed
of, these substances can cause harm to human health and the environment

The product that you have purchased may contain recyclable and/or recycled parts and
we will be happy to provide you with information on these components if required.

C.2 WEEE And RoHS Compliance

The Waste Electronic and Electrical Equipment (WEEE) Directive, and the Restriction
of Hazardous Substances (RoHS) Directive place rules upon European manufacturers
of electrical and electronic equipment. The directives’ aim is to reduce the impact that
electronic devices have on the environment.

Michell products are currently exempt from the RoHS directive, however all future
products will be developed entirely using compliant materials. Furthermore, Michell is
taking active steps to remove non-compliant materials and components from existing
products wherever possible.

Michell is in full compliance with the WEEE Directive (Registration No. WEE/JB0235YW).
Customers may be required to return certain instruments for treatment at the end of
their working life.

June 2010

C.3 Manufacturing Quality

Michell Instruments is registered with the British Standards Institute for Quality
Assurance to:

BS EN ISO 9001: 2008

Rigorous procedures are performed at every stage of production to ensure that the
materials of construction, manufacturing, calibration and fi nal test procedures meet the
requirements laid down by our BSI approved Quality System.

Please contact Michell Instruments (www.michell.com) if the product does not arrive in
perfect working order.

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C.4 Calibration Facilities

Michell Instruments’ calibration facilities are among the most sophisticated in the world
and have been recognized for their excellence.

Traceability to the National Physical Laboratory (NPL) UK is achieved through our UKAS
Accreditation (Number 0179). This covers dew point over the range -90 to +90°C (-130
to +194°F) and also Relative Humidity.

Dew-point calibrations are also traceable to the National Institute for Standards &
Technology (NIST) USA over the range -75 to +20°C (-103 to +68°F).

NOTE: Standard traceable calibration certifi cates for instruments and sensors are not

issued under our UKAS accreditation. UKAS certifi cates are usually to special order and
are clearly identifi ed.

C.5 Return Policy

If a Michell Instruments’ product malfunctions within the warranty period, the following
procedure must be completed:

APPENDIX C

1. Notify a Michell Instruments’ distributor, giving full details of the problem,
the model variant and the serial number of the product.

2. If the nature of the problem indicates the need for factory service then the
instrument should be returned to Michell Instruments, carriage prepaid,
preferably in the original packaging, with a full description of the fault
and the customer contact information.

3. Upon receipt, Michell Instruments will evaluate the product to determine
the cause of the malfunction. Then, one of the following courses of action
will be taken:

• If the fault is covered under the terms of the warranty, the

• If Michell Instruments determines that the fault is not covered

C.6 Warranty

Unless otherwise agreed, the Supplier warrants that as from the date of delivery for a
period of 12 months the goods and all their component parts, where applicable, are free
from any defects in design, workmanship, construction or materials.

instrument will be repaired at no cost to the owner and returned.

under the terms of the warranty, or if the warranty has expired,
an estimate for the cost of the repairs, at standard rates, will be
provided. Upon receipt of the owner’s approval to proceed, the
product will be repaired and returned.

The Supplier warrants that the services undertaken shall be performed using reasonable
skill and care, and of a quality conforming to generally accepted industry standards and
practices.

Except as expressly stated all warranties whether express or implied, by operation
of law or otherwise, are hereby excluded in relation to the goods and services to be
provided by the Supplier.

All warranty services are provided on a return to base basis. Any transportation costs
for the return of a warranty claim shall reside with the Customer.

Michell Instruments 21

APPENDIX D

Easidew Portable HP User’s Manual

Appendix D

Decontamination Declaration

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Appendix D Decontamination Declaration

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IMPORTANT NOTE: Please complete this form prior to this instrument, or any components, leaving your
site and being returned to us, or, where applicable, prior to any work being carried out by a Michell
engineer at your site.

Instrument Serial Number
Warranty Repair? YES NO Original PO #
Company Name Contact Name

Address

Telephone # E-mail address
Reason for Return /Description of Fault:

APPENDIX D

Has this equipment been exposed (internally or externally) to any of the following?
Please circle (YES/NO) as applicable and provide details below

Biohazards YES NO
Biological agents YES NO
Hazardous chemicals YES NO
Radioactive substances YES NO
Other hazards YES NO
Please provide details of any hazardous materials used with this equipment as indicated above (use continuation sheet

if necessary)

Your method of cleaning/decontamination

Has the equipment been cleaned and decontaminated? YES NOT NECESSARY
Michell Instruments will not accept instruments that have been exposed to toxins, radio-activity or bio-hazardous

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JDVGHZSRLQW&RYHUKRXUVVKRXOGEHVXI¿FLHQWWRGHFRQWDPLQDWHWKHXQLWSULRUWRUHWXUQ

Work will not be carried out on any unit that does not have a completed decontamination declaration.

Decontamination Declaration

I declare that the information above is true and complete to the best of my knowledge, and it is safe for Michell
personnel to service or repair the returned instrument.

Name (Print) Position

Signature Date

F0121, Issue 2, December 2011

Michell Instruments 23

NOTES:

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NOTES:

Michell Instruments 25

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