Michell Instruments ES20 Specifications

Dew-Point Sampling

ES20 Compact Sampling System

Stainless Steel Sampling System

The ES20 Compact Sampling System is designed to reliably and accurately measure dew point or moisture content in a wide variety of industrial gas applications up to 20 barg. This sampling system is an economical and high quality solution with a short lead time.

Highlights

• Process connection via 6mm or 1/4” tube ﬁ ttings

• Dew point, moisture content, ﬂ ow, contamination and pressure control

• Sample inlet pressure up to 20 barg

• Modular design

• Stainless steel tubing and ﬁ ttings

• Flexible ﬁ ltration options

• High quality components

• Designed for challenging process environments

• Optional displays

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Applications

• Compressed air dryers

• Pneumatics

• Plastic moulding

• Instrument air

• Hydrogen coolants

• Breathing air

• Pure feed gases

• Heat treatment gases

• Inert gases

Dew-Point Sampling

ES20 Compact Sampling System

A Reliable Sampler for Moisture

Michell Instruments designs and manufactures a broad range of sampling systems for a wide spectrum of industries and processes from the economical compressed air market, to the demanding oil and gas process market.

The ES20 sampling system is a standard modular, highquality product designed to address the needs for ﬁ ltration, pressure, and ﬂ ow control.

High Quality Materials

To ensure continuous and reliable dew-point or moisture measurement, it is important that the dew-point transmitter is exposed to stable conditions of the gas being monitored.

The ES20 sampling system utilizes high quality materials (gas wetted parts) which provide the optimum response to moisture changes in the process.

Filtration Flexibility

If the gas contains impurities it is crucial to remove the contaminants before they reach the sensing device. The ES20 is supplied with a ﬁ lter housing, into which recyclable particulate or coalescing ﬁ lter cartridges can be inserted.

Filtration methods:

• Particulate ﬁ lter (solid contaminants)

• Coalescing ﬁ lter with adjustable drain (solid and liquid aerosol contaminants)

• HDPE guard (ﬁ lter) for sensing element (standard)

• Air ﬁ lter with optional vacuum pump (standard)

Pressure Control and Measurement

Pressure has a direct effect on dew point. The ES20 utilizes a set of conﬁ gurable components for atmospheric or process system line pressure dew-point measurement.

Pressure control features:

• Pressure gauge (dual scale: bar and psi)

• Metering valves (needle valve type)

• Self-regulating vacuum pump

Mounting Variants

Depending on the application, the sampling system can be supplied in 3 variations:

• Mounted on base plate

• Mounted on base plate inside a windowed GRP enclosure

• Mounted on base plate inside a windowed SS enclosure (316 stainless steel)

System Designs

Michell Instruments has over 40 years of experience providing dew-point and moisture measurement solutions.

Our sampling system designs ensure that dew-point and moisture measurements can be performed in the most suitable conditions.

The ES20 compact sampling system can be supplied in various conﬁ gurations and can be used in conjunction with other Michell products, as follows:

• Easidew Transmitter

• Easidew I.S. Transmitter

• Easidew PRO I.S. Transmitter

• Easidew PRO XP Transmitter

• Easidew Online Hygrometer

• Cermet II Hygrometer

Documentation Package

Every ES20 is supplied with a CD-ROM containing the following supplementary ﬁ les for your sampling system:

• Manual

• Datasheet

• Flow diagrams

• Material certiﬁ cation (optional)

• EC declaration of conformity

For add-on products such as transmitters or hygrometers (as mentioned above), a printed manual of the speciﬁ c product is included with documentation.

Flow Control

The ﬂ ow rate of a gas can affect the transmitter’s response time. Every sampling system contains a set of components which help maintain optimum ﬂ ow (1 to 5 liters per minute).

Flow control:

• Flowmeter

• Metering valves (needle valve type)

• Flowmeter with needle valve (with vacuum pump only)

System Customization

If your application requires a customized solution, we have a specialized design and manufacturing facility to cover your requirements. Please contact us for more information.

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Dew-Point Sampling

ES20 System Conﬁ gurations

ES20 Fitted with Particulate Filter

Components used Speciﬁ cations

1 Base plate 316 stainless steel 2 Inlet process connection and material 6mm or 1/4” ﬁ tting (316 stainless steel) 3 Outlet process connection and material 6mm or 1/4” ﬁ tting (316 stainless steel) 4 Metering valve Needle valve type

5 Filter housing

6 Particulate ﬁ lter (inside ﬁ lter housing)

7 Pressure gauge Center back mount (dual scale: Bar and PSI) 8 Sensor sample block 5/8” SS sample block (316 stainless steel)

9 Flowmeter

10 Terminal rail

11 Process indicator mounting bracket (optional) 1/8 DIN cut-out

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Borosilicate glass microﬁ bres (99.5+% removal of 0.1 micron particles)

Borosilicate glass (2 to 12 Nl/min), seals (Viton®)

13 terminals (monitor or vacuum pump ﬁ tted only)

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ES20 Fitted with Coalescing Filter*

Components used Speciﬁ cations

12 Drainage connection and material 6mm or 1/4” ﬁ tting (316 stainless steel)

13 Coalescing ﬁ lter (inside ﬁ lter housing)

Borosilicate glass microﬁ bres (99.5+% removal of 0.1 micron particles and aerosols)

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ES20 Fitted with Vacuum Pump*

Components used Speciﬁ cations

14 Flowmeter with needle valve

15 Vacuum pump Anti-overpressure mechanism (Teﬂ on 16 Pressure gauge Center back mount (dual scale: Bar and PSI) *In addition to particulate ﬁ lter ﬁ tted components

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Optional Dew-Point Measurement Device

Components used Speciﬁ cations

17 Monitor 18 Dew-Point Transmitter

(to be ordered separately)**

Refer to Monitor datasheet Refer to Transmitter datasheet

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ES20 PRO XP System Conﬁ gurations

Dew-Point Sampling

ES20 Fitted with Particulate Filter

Components used Speciﬁ cations

5 Filter housing

6 Particulate ﬁ lter (inside ﬁ lter housing)

316 stainless steel (340 barg maximum), gasket

)

(Viton Borosilicate glass microﬁ bres (99.5+% removal

of 0.1 micron particles)

7 Pressure gauge Center back mount (dual scale: Bar and PSI) 8 Sensor sample block 3/4” SS sample block (316 stainless steel)

9 Flowmeter

Borosilicate glass (2 to 12 Nl/min), seals (Viton®)

10 Conduit entry Access to internal connection

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ES20 Fitted with Coalescing Filter*

Components used Speciﬁ cations

12 Drainage connection and material 6mm or 1/4” ﬁ tting (316 stainless steel)

13 Coalescing ﬁ lter (inside ﬁ lter housing)

*In addition to particulate ﬁ lter ﬁ tted components

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Optional Dew-Point Measurement Device

Components used Speciﬁ cations

Explosion Proof Dew-Point Transmitter/display

(to be ordered separately)**

Refer to Transmitter datasheet

ES20 Enclosure Conﬁ gurations

GRP EnclosureBase Plate Stainless Steel Enclosure

457mm

350mm

Depth: 2mm

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530mm

430mm

Depth: 200mm

500mm

400mm

Depth: 200mm

12 3

Dew-Point Sampling

Technical Speciﬁ cations

Electrical Speciﬁ cations

Supply voltage (vacuum pump only) 230 V AC**

Operating Speciﬁ cations

Operating temperature

Particulate or coalescing ﬁ lter without monitor

Particulate or coalescing ﬁ lter with monitor

Vacuum pump with or without monitor

Operating inlet pressure

Flow rate 1 to 5 Nl/min

Mechanical Speciﬁ cations

Process connection and material Inlet/outlet process connections via 6mm or 1/4” tube ﬁ ttings, 316 stainless steel Gas wetted parts Stainless steel tube, ﬁ lter housing and ﬁ ttings (316 stainless steel), Filter element (borosilicate glass

Ingress protection

Housing material

Dimensions

Pressure and ﬂ ow control

Atmospheric or process pressure

Gas ﬁ ltration Particulate ﬁ lter - Borosilicate glass microﬁ bres (99.5+% removal of 0.1 micron particles)

Electrical connections

Interchangeability Fully interchangeable components Sample block process connection Compatible with various dew-point transmitters with 5/8” and 3/4” UNF process connection

Dew-Point Measurement Speciﬁ cations (Optional)*

Measurement range (dp) -100 to +20°C dew point, -110 to +20°C dew point Accuracy (dp) Up to ±1°C dew point

*For all other speciﬁ cations refer to the Easidew Transmitter and Easidew Online datasheets, available from your local Michell Instruments representative or visit www.michell.com/uk

**Not available for the ES20 Easidew PRO XP version

ES20 ﬁ tted with:

Particulate ﬁ lter Coalescing ﬁ lter

Vacuum pump

No enclosure

GRP & SS enclosures

Base plate

GRP enclosure

SS enclosure

Base plate

GRP enclosure

SS enclosure

Vacuum pressure

Base plate

GPR and SS enclosure

-15 to +60°C 0 to +50°C 0 to +40°C**

0 to 20 barg 0 to 20 barg

-0.3 bar to 1 barg**

microﬁ bres), Transmitter sample block (316 stainless steel), Flowmeter (borosilicate glass) with Viton Pump (Teﬂ on®)

No protection (base plate only) IP66, NEMA 4X

316 stainless steel Glass ﬁ bre reinforced polyester and 4mm safety glass 316 stainless steel and 4mm safety glass

457mm x 350mm x 2mm (h x w x d) 530mm x 430mm x 200mm (h x w x d) 500mm x 400mm x 200mm (h x w x d)

Via metering valves, pressure gauge and ﬂ owmeter Metering valve, pressure gauge, ﬂ owmeter with valve and self-regulating vacuum pump**

Coalescing ﬁ lter - Borosilicate glass microﬁ bres (99.5+% removal of 0.1 micron particles and aerosols)

Via terminal rail Via M20 plastic cable glands

Up to ±2°C dew point

seals,

Michell Instruments ES20 Specifications

Specifications and Main Features

Frequently Asked Questions

User Manual