Some Typical applications include:

Sulphur Hexafluoride Used in Circuit BreakersSulphur hexafluoride is used as an insulating gas in circuit breakers. Excess moisture in SF6 gas causes arcing, which can trip the circuit breaker and cut off power to the distribution network.

Moisture in Natural GasThe presence of moisture in high-pressure natural gas from a producing well causes pipelines and associated valves to freeze. High moisture content also leads to the formation of hydrates of the liquid hydrocarbons present, thus causing further difficulties. The moisture content of the gas also adversely affects the BTU value of the gas, thus lowering the quality and value of the product.

Vacuum-Evacuation and Gas Refill in Oil Filled TransformersMoisture is continuously monitored in the vacuum evacuation and gas refill of oil-filled transformers. The moisture content of blanketing gases, of oil-filled transformers, directly affects the dielectric properties of the oil through water vapour dissolution.

Instrument AirThe presence of moisture in air used as a blanketing gas for sensitive instruments can cause corrosion problems, rapid changes in calibration, and loss of instrument sensitivity.

Breathing AirThe presence of excess moisture in breathing air can lead to freezing in the pressure regulator and ice blocking the orifice, causing an interruption to the supply of air to the user.

Hydrogen Annealing OvensHigh moisture content in hydrogen gas used in annealing furnaces causes oxidation of the metal to occur, thus resulting in an undesirable surface finish on the product.

Ethylene Gas Stream for High-Density Polyethylene ProductionHigh moisture content in the Ethylene feed gas reduces the catalyst activity, thereby decreasing the overall yield of the polyethylene reactors.

Hydrogen Cooled Electric GeneratorsHydrogen is used to cool large stationary generators because of its high heat capacity and low viscosity. The hydrogen must be kept dry in order to maintain both its heat capacity and viscosity properties. Ambient moisture is considered a contaminant which will reduce the heat capacity and increase the viscosity of the cooling hydrogen.

Injection MouldingThe presence of excess moisture in the air used to dry plastic pellets has several adverse effects on the plastic products which are produced.

1. Excess moisture decreases the strength of the product.2. Excess moisture causes a poor finish on the surface of the product.3. Excess moisture causes clear plastic products to have a cloudy appearance.

All of these production defects reduce product yield and escalate production costs.

Nuclear ReactorsThe Advance Gas Cooled Reactor uses carbon dioxide gas to transfer heat from the nuclear fission core to the water boiler for steam generation. The moisture content needs to be kept low to avoid corrosion damage, and the moisture monitoring will also act as a leak detector.

Packaging FoodsFor some foil-wrapped foods such as butter, it is possible to extend the storage life if the small amount of air trapped within the foil is replaced with nitrogen with a very low moisture content.

Dew Point Measurement

Datasheet No. Hand-Held Dewpoint Hygrometers

Datasheet No.

E1 SS-B

E2 SSI and SSII

A3 SADPmini E3 SSIII and SSIV

A4 SADPmini-Ex E4 SSNGH

A5 SADPmini Accessories E5 TEG

On-Line Dewpoint Transmitters Chilled Mirrors Hygrometers

B1 AMT F1 CMH-RPC

B2 AMT-EX F2 CMH-Portable

B3 ADHT-Ex

B4 PDT -40/+30C SF6 Utility Instruments

B5 PDT -60/+20C G1 GCTU-M

B6 EDM-TX G2 GCTU-B

G3 GCTU-PDT-PTY-SO2

On-Line Dewpoint Hygrometers G4 GCTU-CMH-PTY-SO2

C1 Model 6020 G5 GCTU-CMH-PTY

C2 DS1000

C3 DS1200-AMT Calibration Services

C4 DS1200-AMT-Ex H1 Factory Calibration

C5 DS1200-PDT H2 Equipment Return Form

C6 DS2000 Portable Dewpoint Meters and Analysers

C7 DS2000-1 D1 SADPu and SADPu-D

C8 DS2000-EXD D2 DSP-Ex

C9 EDM - Wall and Rack Mounted D3 DSP-FCI

D4 P35

D5 EDM - Portable

More info at www.amsystems.co.uk and www.dew-point.com

Intrinsically Safe Hand-Held Automatic Dewpoint Hygrometer

Ranges available between -110°C to +20°C (-166°F to +68°F) dewpoint

Features

• Certified Intrinsically Safe for use in explosive

atmospheres:

Ex ia IIC T4 Ga (Ta = – 20°C to +40°C)

Ex ia IIC T3 Ga (Ta = – 20°C to +50°C)

• Automatic Calibration (AutoCal)

• Various ranges available from -110°C to +20°C

dewpoint

• Rechargeable battery - Over 80 hours of

continuous operation on full charge

• User selectable units - °C, °F, ppm, ppm(w),

ppb, g/m3, lbs/MMSCF

• “Desiccant Dry Down Assembly” for quick

measurements

• RS485 serial communication and 4-20mA

analogue output

• Real time graphic logging to PC (Safe

area only)

• Advanced DATA logging & PC download

• Pressure correction computation

• True hand held Portable Device –

weighing less than 1.2 kgs

• Robust ergonomically designed custom

housing

• Fully self-contained and user friendly

• Capture and display of up to 16000 data

points, with 20 user-definable TAG refs

• Non Ex also available - ask for SADPmini

Applications

• Natural gas production

• Petro chemical production

• Power stations

• Industrial process gases

• Explosive gases

• Gas cylinder testing

• Laboratory and research

Ultra Compact - Ultra Portable - Ultra Functional -

Easy to Use - The Popular Global Choice.

Desiccant Dry Down Technology

Model SADPmini-Ex

1 OF 4

The Model SADPmini-Ex Automatic Dewpoint Hygrometer is a

popular global choice for measureing the Dewpoint (moisture

content) in gases and dry compressed air and is perfect for

mobile analysis in Hazardous Areas.

Measuring instrument

conforms with

BS EN 61326-1

FEATURES

• Analogue or Digital Display

• Intrinsically Safe for use in Hazardous Areas

• Automa.c Calibra.on

• Desiccant Dry-Down Chamber for rapid

measurements

• Over 150 hours con.nuous opera.on

• Self Contained and fully portable

• Simple to operate

• Illustrated manual included

Fast Response - Stable - Reliable -

Accurate - Easy to Use.

SHAW Automa.c Dewpoint Hygrometer - the worlds leading

portable hygrometer is now manufactured, under licence,

by Alpha Moisture Systems.

Having been in produc.on for nearly 50 years, this unit

has stood the test of .me and its popularity is

demonstrated by the fact that it can be found in every

industrialised country in the world. It remains the

benchmark in portable hygrometry for measuring

absolute humidi.es down to one part per million

and below.

Built to the exac.ng demands s.pulated by SHAW, this robust and easy to use Model SADP Dewpoint

Hygrometer has, at its heart, the world renown SHAW Ultra High Capacitance Sensor with the unique

Automa.c Calibra.on feature (see overleaf).

Designed to operate at atmospheric pressure, this instrument is available in a variety of sensor ranges,

covering an overall range of -110°C to +20°C dewpoint.

Analogue versions of the SHAW Automa.c Dewpoint Hygrometer offer the 0-10ppm(v) range expanded

over the full scale, which is selected by means of a rotary switch on the front panel. This allows for

precise measurements below 10ppm(v). Digital versions of Model SADP can be configured to display

dewpoint in either °C or °F on a large, easy to read, 41/2 digit LCD display.

The SHAW Automa.c Dewpoint Hygrometer is fully self-contained and is also cer.fied as Intrinsically Safe

for use in Hazardous Areas, without the need for any addi.onal accessories such as Zener Barriers etc.

The unit is supplied ready for use with ba/eries installed and a cer.ficate of calibra.on traceable to

Na.onal and Interna.onal Standards. Standard accessories supplied with the unit include a specially

designed carrying case with shoulder strap, opera.onal tools, 2m PTFE sampling hose and a pressure

dewpoint calculator.

Intrinsically Safe Portable Dewpoint Hygrometers with ranges available

between -110°C to +20°C (-166°F to +68°F) dewpoint

Model SADPμ and SADP-D

1 OF 3© Alpha Moisture Systems Ltd.

Measuring instrument

conforms with

BS EN 61326-1

Desiccant Dry Down Technology

Features

• Intrinsically Safe - ATEX Ex ia IIC T3 / T4 Ga

• Overall Range -110°C to +20°C Dewpoint

• User Friendly - Simple Operation

• Portable - Fully Self Contained

• Self-Diagnostics on Start-up

• Digital Indication

• Automatic Switch Off

• Quick Connect SS Coupling

• "C" Type Disposable Batteries

• Excess of 250 Hours of Continuous Operation

• Desiccant Dry-Down Chamber For Rapid

Measurements

• Selectable Engineering Units in °C, °F,

ppb(v), ppm(v), ppm(w), g/m³ & lb/MMSCF

Fully Portable - Rugged - Fast Response -

Stable - Reliable - Accurate - Easy to set up.

The Model DSP-Ex is certified intrinsically safe to Ex ia IIC T3/T4 Ga for use in hazardous areas without

the need for any additional accessories. Designed to operate at atmospheric pressure, Model DSP-Ex is

available in a total of 8 different ranges, encompassing an overall range from -110°C to +20°C dewpoint,

with the display selectable in various engineering units:- °C, °F dewpoint, ppm(v), ppb(v), ppm(w), g/m3

and lb/MMSCF. Parts per million (weight) can be programmed for gases other than those pre-pro-

grammed (Air, Ar, H2, SF6, CO2 & N2) by simply inputting the molecular weight of the gas under test.

Full interchangeability of the dewSMART™ Model DDHS Sensor ensures guaranteed accuracy and

reliability without the need to return the whole unit back to base for calibration and setup.

Model DSP-Ex is supplied ready for use with batteries installed, certificate of calibration traceable to

National and International Humidity standards, two metres of stainless steel braided PTFE sample

hose, instruction manual and an anti-static carrying case as standard.

Intrinsically Safe Portable Dewpoint Hygrometer

Ranges available between -110°C to +20°C (-166°F to +68°F) Td

Model DSP-Ex

1 OF 3© Alpha Moisture Systems Ltd.

Measuring instrument

conforms with

BS EN 61326-1

Comes with Anti-Static

Carry Bag as standard.

The Model DSP-Ex is a fully self-contained portable

hygrometer from Alpha Moisture Systems which will deliver

the most dependable moisture measurement in industrial

and laboratory applications. Designed with the operator

in mind, Model DSP-Ex is extremely easy to use and the

digital dewSMART™ technology ensures accurate and

reliable readings over long periods with little or no

maintenance. The incorporation of stainless steel

quick connect fittings, together with the Desiccant

Dry-down Chamber, allows rapid measurements

which saves both time and cost.

Model EDM-W and EDM-RWall and Rack Mounted Trace Moisture Analysers

FEATURES• The EDM-W and EDM-R can process up to 4

independent channels simultaneously.• Sharp resoluion, full colour, touch screen

and easy to use screen with built in keyboard feature.

• The display can be set in ppm(v) or 0C dewpoint.

• 4 languages available - English, German, Russian and Chinese.

• Advanced menu navigaion. • Manufactured according to ISO 9000.• ATEX cerificaion can be arranged.

• Status signals for every channel are suppliedas volt free relays for:

- failure- funcion control- maintenance requirements- moisture alarm

• Self monitoring of instrument funcion. • All changes and seings are saved on

several levels (user and administrator) with password protecion.

• The analogue output can be scaled freely.

APPLICATIONS• Producers and users of technical and

medical gases• Microelectronics• Chemical industries (especially for

technologies with aggressive gases)

• Mechanical and apparatus engineering• Heat treatment / hardening processes• Research and laboratories

For more informaion on the Model EDM-W and EDM-R Call +44 (0) 1274 733100or Email: info@amsystems.co.uk

NEW

The Model EDM-W and EDM-R Trace Moisture Analysers arethe next generaion of successful measuring instruments thatwork on a basis of P2 O5 sensors and are used for the determinaion of moisture in most gases (excluding NH3ammonia) in the ppm range.

They consist of a separately installed measuring cell mainly of PVDF (for aggressive gases), that can be integrated in a Gas Handling System, and an electronic evaluaion unit.

Colour Touch Screen - Rugged - Accurate - Easy Set Up - 1 or 4 Channels.

P2 O5 sensor

WallMounted

Rack Mounted

Gas Collection and Transfer Unit for SF6 and other non-aggressive gases

Model GCTU-B (Battery/Cell powered)

FEATURES

• Fully portable – re-chargeable batteries

• 7 fill/discharge cycles on single battery

charge

• 12 bar maximum back fill pressure

• Rugged IP67 transport case

• User friendly operation with built-in fail safe

features

• Supplied ready for use with connectors and

high quality pipes and hoses

• Can also be connected to purity analysers

The Alpha Moisture Systems GCTU-B has been specifically

developed to collect all SF6 sampled for analysis. The Model

GCTU-B is also designed to recycle the entire SF6 sample to the high

or medium voltage switch(GIS)/transformer giving a zero effect to

the installation and protecting the environment by eliminating any

discharge to the atmosphere.

The common usage of SF6 in high and medium voltage switchgear

and transformers has brought significant advantages in

performance and reliability but, because SF6 is a “greenhouse

gas”, special precautions must be adopted when routine

sample analysis is undertaken.

1. Connect & Set up

2. Collect SF6

3. Take sample

4. Transfer back

Completion of spot

check analysis in

under 10mins*

The NEW GCTU-B can be utilised with any field analysis instruments and because it is battery/cell

operated and fully portable this provides a simple and effective method of achieving an environmentally

friendly solution to SF6 analysis and recycling.

Model GCTU-B is fully compatible with all Alpha Moisture Systems portable dewpoint hygrometers

including Model SADPMini, Model SADPmini-Ex, Model SADPμ, Model SADPMini, Model P35,

Model DSP-FCI, Model DSP-Ex.

© Alpha Moisture Systems Ltd.

625mm

(24.6”)

500mm

(19.7”)

297mm

(11.6”)Fully portable

and aircraft

friendly

transport case

1 OF 2

FEATURES

• Full colour touch screen graphical display.

• Internal logging as standard with download

func-on to PC via USB.

• Pre-set alarm points to IEC 60480:2004 for

dew-point, % and ppmv for both MV and HV

installa-ons.

• Integrated Chilled Mirror Dewpoint

Hygrometer, SF6 purity and SO2 analyser.

• Unlimited Fill/Discharge Cycles.

• Dual voltage 240v or 110 op-on available.

• 12 bar (175 PSIG) maximum back fill pressure.

• User friendly opera-on with built-in fail safe

features.

• Supplied ready for use with a high quality

2 meter PTFE lined stainless steel braided

sample hose.

• Extra strong IP66 (NEMA 4) rugged

transporta-on case with retractable handle

and tough in-line wheels.

• Precision Chilled Mirror Dewpoint

Hygrometer with accuracy to ± 0.2°C

(0.36°F).

Range -60°C to +20°C dewpoint. °F or ppmv.

• SF6 Purity Analyser (%)

• SO2 Analyser (ppmv)

• Transfer/Pump-Back func,on

The GCTU-CMH-PTY-SO2 has been specifically devel-

oped to sample and analyse dewpoint, SF6 Purity (%)

and SO2 (ppmv). The unit collects the SF6 sample

from MV/HV Circuit Breakers, Switchgear and

Transformers in the internal collec-on vessel of the

instrument. A�er sampling and logging, the sample

can simply be pumped back into the installa-on

under test.

The GCTU-CMH-PTY-SO2 is designed to recycle and

pump-back the en-re SF6 sample, giving a zero effect

to the installa-on and protec-ng the environment

by elimina-ng any discharge to atmosphere.

The user has only to connect, regulate flow, take

sample, log, then pump back, typically in under 5

minutes (includes purging -me).

4 in 1 - SF6 Analyser - Gas Collec,on with Pump-Back

Model GCTU-CMH-PTY-SO2

Measuring instrument

conforms to

BS EN 61326-1

© Alpha Moisture Systems Ltd. 1 OF 2

Innovation • Precision • Quality • Performance

Model P35 is a fully self-contained portable hygrometerfrom Alpha Moisture Systems, designed specifically for useduring the assembly, commissioning and service of SF6gas insulated switchgear, though its features make it idealfor many other on-site applications.

Designed with the operator in mind, Model P35 isextremely easy to use and the microprocessor technologyenables accurate and reliable readings over long periods oftime, ensuring the most dependable moisturemeasurement in both industrial and laboratory applications.

The incorporation of the Desiccant Dry-down Chamber,together with stainless steel quick connect fittings andadditional components for sample flow control andindication, means that the user can be assured that anaccurate reading will be made using a minimal amount ofvaluable SF6 gas.

Designed to measure at atmospheric pressure, Model P35encompasses an overall range from -80°C to 0°Cdewpoint. Precise factory calibration ensures guaranteedaccuracy and reliability of operation. The instrument canbe operated from a switchable mains supply of 100/120V or200/240V AC, or using self contained internal batteries.

Model P35 is supplied ready for use with batteries installed,calibration certificate traceable to National and

International Humidity standards, two metres of stainlesssteel braided PTFE sampling hose and instruction manual.

alphamoistureS Y S T E M S�

MMooddeell PP3355Portable SF6 Dewpoint Transmitter

Alpha Moisture SystemsAlpha House, 96 City RoadBradford, BD8 8ESEngland

+44 (0) 1274 733100+44 (0) 1274 733200

info@amsystems.co.ukwww.amsystems.co.uk

Tel

Website

Email

Fax

To allow rapid spot checks it is essential that the measuringsensor is kept drier than the sample to be measured. Thedesiccant dry-down chamber is designed to do just this bykeeping the sensor surrounded by desiccant when theinstrument is not in use, only exposing it to the sample gaswhen taking measurements. At no stage is the sensor allowedto come into contact with ambient air.

ReadPosition

samplegas inlet

sensor exposedto gas sample

sampleexhaust

Desiccant Head assemblyfigure 1

Dry-DownPosition

Sensor surroundedby desiccant

sensor

Features :-• Overall Range - 80°C to 0°C Dewpoint (-112°F

to +32°F)• Guaranteed Accuracy ± 2°C Dewpoint• User Friendly - Simple Operation• Portable - Fully Self Contained• Digital Indication in °C or °F • Automatic Calibration• Sample Flow Indication• Quick Connect SS Fittings • Battery or Mains Operated• Supplied With Calibration Certificate • Sample Flow Control for Inlet Pressure up to

20 barg• Desiccant Dry-Down Chamber For Rapid

Measurements

FEATURES

• User Friendly & Advanced Functionality

• Factory set in either °C or °F Dewpoint,

ppm(v), ppb(v), g/m3 or lbs/MMSCF

• 22V – 253V AC or DC Operation

• Linear 4-20mA Retransmission Signal

• 2 Independent, Fully Programmable

Alarm Relays

• “AUTOCAL” CALIBRATION FEATURE

• Fast Response

• Long Term Stability

• IP66 / NEMA4 Weatherproof Protection

• Calibration traceable to National &

International Standards

Fast Response - Stable - Reliable -

Accurate - Easy to Install.

User friendly solution for continuous on-line dewpoint

measurement in dry process gases and dry compressed

air, offering powerful functionality and simple interface

through advanced digital technology.

Model DS1200 from Alpha Moisture Systems is a single channel

on-line hygrometer designed to measure dewpoint in process

gases and dry compressed air. The panel mounted ⅛ DIN

dewpoint meter, providing panel protection to IP65 (NEMA4X),

combines with the Model AMT range of ultra high capacitance

sensors for accurate trace moisture measurement.

Combination of advanced digital technology of the display electronics and the transmitter, makes this the

system of choice for a wide range of applications where precise indication, control and monitoring is critical.

Model DS1200-AMT system can be factory configured to read in °C dewpoint, °F dewpoint, ppm(v), ppb(v),

g/m³ or lbs/MMSCF. The measured value is displayed on a large 4 digit, 13.8mm high, fourteen segment

LED display. Model DS1200-AMT Dewpoint Hygrometer is fully configured to the customer's specifications.

The instrument offers two fully programmable alarm relays, which can be independently set across the

full operating range. An optically isolated analogue signal, linear with the measured unit is also available

(to interface with any external device).

Model DS1200-AMT can be supplied with any one of a range of dewpoint transmitters, which have all

been specially manufactured to provide long term stability, so ensuring a long and trouble free service life.

The long lasting sensing element offers excellent sensitivity, repeatability and response speed - especially

on dry down. Integrated electronics in each transmitter allow calibration data to be stored within its

memory, making transmitters completely field interchangeable.

Each transmitter is calibrated to provide overall system accuracy of better than ±2°C dewpoint and

supplied with a certificate traceable to international humidity standards.

Model DS1200-AMT also incorporates the invaluable “AUTOCAL” feature for easy field verification of the

system response, without recourse to any additional equipment. Accidental or unauthorised operation is

prevented by a simple initiation routine.

The system allows the display unit to be sited in excess of 1000m from the transmitter, connected by a

simple twisted pair cable.

Single Channel Dew Point Hygrometer

Ranges available between -1200C to +200C (-1660F to +680F) dewpoint

Model DS1200-AMT

1 OF 4© Alpha Moisture Systems Ltd.

Measuring instrument

conforms with

EN 61326

Intrinsically Safe 4-20mA Transmitter

FEATURES

• 3 Wire Intrinsically Safe Dewpoint Transmitter

• II 1GD Ex ia IIC T4 Ex iaD 20 T135oC

(-20oC ≤≤≤≤ Ta ≤≤≤≤ +60

oC)

• Overall Range: -120ºC to +20ºC Dewpoint

• Accuracy ± 2ºC Dewpoint

• AUTOMATIC CALIBRATION

• Can be configured for Linear 4-20mA signal in: ºC & ºF Dewpoint, ppm(v), g/m

3, lb/MMSCF

• Temperature Compensation

• Failure Diagnostics

• Long Term Stability

• Fast Response

• IP66 / NEMA4X Protection

Model AMT-Ex Dewpoint Hygrometer is a three wire 4-20mA transmitter, used for continuous measurement of humidity

in a process gas or compressed air, which will output a linear 4-20mA signal corresponding to the dewpoint temperature. The Model AMT-Ex transmitter can also be factory configured to output a 4-20mA linear signal for any other moisture unit e.g. ppm(v), ppm(w), g/m

3, lb/MMSCF etc.

The long lasting sensing element offers excellent sensitivity, repeatability and response speed. Each unit is supplied with a Certificate of Calibration, traceable to International Humidity Standards, validating accuracy to ±2ºC dewpoint. Model AMT-Ex is ATEX certified and provides an Intrinsically Safe Dewpoint Transmitter for hazardous area use when installed with the appropriate isolator. The transmitter also incorporates an Automatic Calibration (AUTOCAL) feature, which allows the user to carry out a field calibration / span check. AUTOCAL feature is operated by means of two small button switches built within the transmitter enclosure. To avoid tamper, the switches are locked in normal use and can only be activated by following a special routine. The integral RISC microprocessor circuitry of the Model AMT-Ex transmitter allows high resolution with advanced self-diagnostics for fault conditions. It also enables periodic re-calibration of the moisture sensor, storing calibration data within the fully self-contained unit. The mechanics of the Model AMT-Ex transmitter have been designed to cope with extreme environmental conditions. The rugged stainless steel construction offers protection to IP66 (NEMA4X), with transmitter electrical connections made via secure industrial connector. Model AMT-Ex transmitter can withstand 35,000 kPa (350bar) maximum pressure and by employing a low resistance cable, the transmitter can be located significant distances, in excess of 1000 metres, from the safe area. Designed with the operator in mind, for reliable and accurate measurements, Model AMT-Ex is extremely easy to install and operate, requiring little or no maintenance. The Model AMT-Ex transmitter is supplied with a Certificate of Calibration, an instruction manual and 2m connecting cable.

© Copyright: Alpha Moisture Systems Ltd

Alpha Moisture Systems

Alpha House, 96 City Road Bradford BD8 8ES England

CERTIFICATE No. FM35600 BS EN ISO 9001:2008

VAT Registration No. GB607207563

WEEE Producer Registration No. WEEE/EA0067TX

Tel

Fax

Email

Web

+44 (0) 1274 733 100

+44 (0) 1274 733 200

info@amsystems.co.uk

www.amsystems.co.uk

Measuring instrument

conforms with

DIN EN 61326

Model PDTDewpoint Transmi*er 4-20mA (-400C to +300C)

FEATURES

• 2 Wire Dewpoint Transmi*er

• Range: -400C to +300C Dewpoint

• Accuracy ± 20C Dewpoint

• Temperature Compensa)on

• Long Term Stability

• Fast Response

• Calibrated to Interna)onal Standards

• IP65 / NEMA4 Protec)on

APPLICATIONS

• Refrigerant dryers

• Environmental chambers

• Product drying

• Ambient air monitoring

• HVAC

• Gas turbine frost protec)on systems

• Rotary wheel dryers

• Switchgear monitoring

Low Cost - Reliable - Accurate -

Easy to Install - Stable.

For more informa*on on the Model PDT Transmi+er call +44 (0) 1274 733100

or Email: info@amsystems.co.uk

Model PDT Dewpoint Transmi*er is a two wire 4-20mA transmi*er for

con)nuous measurement of moisture in a process gas or compressed air that

gives a linear 4-20mA signal corresponding to the dewpoint.

It is ideally suited for monitoring the moisture content of compressed air from

refrigerant driers. See other applica)ons below.

The Model PDT transmi*er can also be factory configured to give a

4-20mA linear signal for %RH.

The long las)ng Polymer sensing element offers excellent sensi)vity, repeatability and response

speed. Each unit is supplied with a Cer)ficate of Calibra)on, traceable to Interna)onal Humidity

Standards, valida)ng accuracy be*er than ±20C dewpoint.

The Model PDT transmi*er has been designed to cope with extreme environmental condi)ons.

The rugged stainless steel construc)on offers protec)on to IP65 (NEMA4), with transmi*er electrical

connec)ons made via secure industrial connector.

NEW

1 OF 2

Features

Hardware - Flow Indicators and Flow Meters

• 0.1-0.9 for SF6 and 0-10 litres per minute

for all other gases.

• 1/4”, 1/8” and 6mm fittings available.

• High quality, rugged and accurate.

• Clear window indication.

Logging

• Log up to 16,000 samples.

• Use up to 20 separate data locations.

• Sampling interval from 6 seconds to once

per day.

• Numerical and Graphical display of data on

SADPmini screen.

• REAL TIME RECORDING: Device can be

programmed to monitor, record and

graphically present data in real time directly

to your PC.

• System requirements compatibility:

Windows® 95 or later for Serial connection

& Windows® 2000 or later for USB

connection to PC.

Upgrading

• Basic to advanced options available.

• Latest software version.

• Advanced options available - please call.

Connections (Comms)

• RS232, RS485 and USB cables and

interfaces available.

Servicing

• High grade sealing kits and single

components available.

• Fast turnaround servicing, repairs and

calibration services available.

Connections (Pipework and Fittings)

• A large range of high grade stainless steel

fittings available.

Carrying

• Hard wearing, padded nylon carrying case.

• Carry handle, belt loop and adjustable

shoulder strap.

A large range of additional accessories now available

Model SADPmini Accessories

We hold in stock a large range of accessories for the Model SADPmini

and the Model SADPmini-Ex hand-held dewpoint hygrometers.

From hardware to logging, upgrades to servicing components,

connections to carrying. Below is just a small selection of our popular

accessories range for the SADPmini’s.

We only supply high quality and reliable components to give you

the reliability and long lasting confidence you would expect.

Please also see data sheets for Model SADPmini and the Model

SADPmini-Ex that list other available ordering options.

Alpha Moisture Systems SADPminis Accessories

1893 SADPmini Accessories 070313 Iss-1b

Flow Indicator c/w fittings P P

Flow Indicator Graduated 0.1-0.9 for SF6 P P

Flow Meter c/w fittings P P

PTFE Sample Pipe (2 metres) P P PPE090-2M

Small Filter Unit c/w fittings and standard

filter cartridge. Without drain.* P P

Universal SADPmini+Ex Battery Charger P P PSU006

v2.8 (USB to RS485 Connection) Kit P P Mini-LOG-USB

v2.8 (Serial RS232 to RS485 Connection) Kit P P Mini-LOG-SRL

SADPmini-Head

Head Seal Kit (4 x seals + grease) Seal Kit

Aluminium Head - P P (v1)

Chrome Head - P P (v2)

Desiccant 0.5kg. P P Mini-Sieve

Cable for SADPmini to USB Converter P P CAB033

Interface Standard & Ex P P INT008

Cable for USB Interface to

Computer USB Port Standard & Ex P CAB031

SERIAL Interface P P INT007

Cable for SADPmini to SERIAL Interface P P CAB032

Cable for SERIAL Interface to Computer

SERIAL Port P P CAB029

Replacement Carrying Case for SADPmini-Ex P CAS009

Carry Case SADPmini (not Ex) P CAS011

Part Description SADPmini SADPmini-Ex Order Part No.

Hardware Accessories

Basic Model to Logging upgrades

Servicing

Connections (Comms)

Carrying

© Alpha Moisture Systems Ltd.

Tel +44 (0) 1274 733100

Fax +44 (0) 1274 733200

Email info@amsystems.co.uk

Website www.amsystems.co.uk

2 OF 2

Registered in England and Wales No. 3902302 - VAT Registration No. GB 607 2075 63 - WEEE Producer Registration No. WEEE/EA0067TX

Alpha Moisture Systems Limited. Registered Office: Alpha House, 96 City Road, Bradford, BD8 8ES

AFI/1-10/4 (1/4”)AFI/1-10/8 (1/8”)AFI/1-10/6 (6mm)

1-10

LPM

AFM/1-10/4 (1/4”)AFM/1-10/8 (1/8”) AFM/1-10/6 (6mm)

1-10

LPM

AFI/SF6/4 (1/4”)AFI/SF6/8 (1/8”)AFI/SF6/6 (6mm)

FITTINGS

0.1-

0.9

LPM

Longer lengths available, please specify.

AFU/4 (1/4”)AFU/8 (1/8”)AFU/6 (6mm)

Small Coalescing Filter Units With Drain and Valve. Order AFU-C-V*

* We have a large range and offer a “make to order” service - please contact us with your specifications.

CERTIFICATE No. FM35600

BS EN ISO 9001:2008

Model SS ISampling System

dewSMART™

Features :-

!! Sample inlet pressure up to 28 barg

!! Sensor operating at atmospheric pressure

!! Process and auxiliary sample inlets with

manual selection valve

!! Outlet connection for sample recovery or disposal

!! Particulate filtration, 99.99% to 0.6 microns

!! Sample pressure control and indication

!! Sample flow control and indication, 0-5 l/min

!! Sample flow schematic and component labelling

on front panel

!! Panel or surface mounting with optional

weatherproof enclosure

!! Can be situated in a hazardous environment

Alpha House, 96 City RoadBradford BD8 8ES EnglandTelephone: 01274 733100Facsimile: 01274 733200E-mail: info@amsystems.co.uk Web: www.amsystems.co.uk

Sampling Systems are engineered solutionsfor extracting and analysing a representativesample of the process air or gas which is then either vented off to atmosphereor returned back to the process.

Alpha Moisture Systems range of samplingsystems have been developed through manyyears of experience in industrial moistureanalysis. All systems are built using thehighest quality components to ensure longterm performance and reliability even in thetoughest of applications.

Our standard range of Sampling Systemsshown here are designed to cater for mostapplications, however if your particularrequirements are not met by any of thoseshown, our design engineers would only betoo happy to advise and custom design foryour specific application.

Reliability, serviceability and well plannedlayout are of paramount importance in asampling system. In view of this all oursystems are constructed to the higheststandards using quality components and withthe following general features :-

• Sample pipework and components built onto alu-minium front panel for support and neat layout.

• Clear flow schematic on front panel withlabelling of all major components.

• Modular construction for panel, surface or weath-erproof mounting.

• All pipework in stainless steel using high quali-ty compression fittings also of stainless steel.

• All internal electrical connections wired to mainterminal block.

SPECIFICATIONS - Model SS I

AUXILIARYINLET

SAMPLEINLET

SAMPLEPRESSURECONTROL SAMPLE

PRESSURE

SAMPLEOUTLET

SAMPLEFLOW RATE

SAMPLEFILTER

0

10

20 30

4050

L/M54321

Model SSILow Pressure Sample System - Maximum inlet pressure up to 28 barg, withsensor opertaing at atmospheric pressure.

This system is designed for gas or general compressed air sampling formaximum inlet pressure of 28 barg, with the moisture sensor operating atatmospheric pressure. The system provides for all necessary pressureand flow control and includes sample filtration to protect againstparticulate contamination. Auxiliary inlet connection is provided for asecond sample stream or for injection of a calibration gas. An outletconnection is also included to allow sample recovery or disposal.