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
Applications
•
Process connection via 6mm or 1/4” tube fittings
•
Compressed air dryers
•
Dew point, moisture content, flow, contamination
and pressure control
•
Pneumatics
•
Sample inlet pressure up to 20 barg
•
Plastic moulding
•
Modular design
•
Instrument air
•
Stainless steel tubing and fittings
•
Hydrogen coolants
•
Flexible filtration options
•
Breathing air
•
High quality components
•
Pure feed gases
•
Designed for challenging process environments
•
Heat treatment gases
•
Optional displays
•
Inert gases
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Dew-Point Sampling
ES20 Compact Sampling System
A Reliable Sampler for Moisture
•
Metering valves (needle valve type)
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.
•
Flowmeter with needle valve (with vacuum pump only)
The ES20 sampling system is a standard modular, high-quality
product designed to address the needs for filtration, pressure,
and flow control.
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
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.
Mounted on base plate inside a windowed SS enclosure
(316 stainless steel)
System Designs
The ES20 sampling system utilizes high quality materials (gas
wetted parts) which provide the optimum response to moisture
changes in the process.
Filtration Flexibility
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.
If the gas contains impurities it is crucial to remove the
contaminants before they reach the sensing device. The
ES20 is supplied with a filter housing, into which recyclable
particulate or coalescing filter cartridges can be inserted.
The ES20 compact sampling system can be supplied in various
configurations and can be used in conjunction with other
Michell products, as follows:
•
Easidew Transmitter
Filtration methods:
•
Easidew I.S. Transmitter
•
Particulate filter (solid contaminants)
•
Easidew PRO I.S. Transmitter
•
Coalescing filter with adjustable drain
(solid and liquid aerosol contaminants)
•
Easidew PRO XP Transmitter
•
HDPE guard (filter) for sensing element (standard)
•
Easidew Online Hygrometer
•
Air filter with optional vacuum pump (standard)
•
Cermet II Hygrometer
Pressure Control and Measurement
Pressure has a direct effect on dew point. The ES20 utilizes
a set of configurable components for atmospheric or process
system line pressure dew-point measurement.
Documentation Package
Every ES20 is supplied with a CD-ROM containing the following
supplementary files for your sampling system:
•
Manual
Pressure control features:
•
Datasheet
•
Pressure gauge (dual scale: bar and psi)
•
Flow diagrams
•
Metering valves (needle valve type)
•
Material certification (optional)
•
Self-regulating vacuum pump
•
EC declaration of conformity
Flow Control
The flow rate of a gas can affect the transmitter’s response
time. Every sampling system contains a set of components
which help maintain optimum flow (1 to 5 liters per minute).
Flow control:
•
Flowmeter
For add-on products such as transmitters or hygrometers (as
mentioned above), a printed manual of the specific product is
included with documentation.
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.
www.michell.com
Dew-Point Sampling
ES20 System Configurations
1
ES20 Fitted with Particulate Filter
Components used
Specifications
1
Base plate
316 stainless steel
2
Inlet process connection and material
6mm or 1/4” fitting (316 stainless steel)
3
Outlet process connection and material
6mm or 1/4” fitting (316 stainless steel)
4
Metering valve
Needle valve type
5
Filter housing
316 stainless steel (340 barg maximum), gasket (Viton®)
6
Particulate filter (inside filter housing)
Borosilicate glass microfibres (99.5+% removal of 0.1
micron particles)
7
Pressure gauge
Center back mount (dual scale: Bar and PSI)
8
Sensor sample block
5/8” SS sample block (316 stainless steel)
Flowmeter
Borosilicate glass (2 to 12 Nl/min),
seals (Viton®)
10
Terminal rail
13 terminals (monitor or vacuum pump fitted only)
11
Process indicator mounting bracket (optional)
1/8 DIN cut-out
9
11
17**
10
18**
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ES20 Fitted with Coalescing Filter*
12
13
Components used
Specifications
Drainage connection and material
6mm or 1/4” fitting (316 stainless steel)
10
18**
Coalescing filter (inside filter housing)
Borosilicate glass microfibres (99.5+% removal of 0.1
micron particles and aerosols)
5
13
4
8
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1
ES20 Fitted with Vacuum Pump*
Components used
Specifications
14
Flowmeter with needle valve
Borosilicate glass (2 to 12 Nl/min), seals (Viton®)
15
Vacuum pump
Anti-overpressure mechanism (Teflon®)
16
Pressure gauge
Center back mount (dual scale: Bar and PSI)
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14
Optional Dew-Point Measurement Device
Components used
Specifications
17
Monitor (to be ordered separately)**
Refer to Monitor datasheet
18
Dew-Point Transmitter (to be ordered separately)**
Refer to Transmitter datasheet
15
2
3
www.michell.com
Dew-Point Sampling
ES20 PRO XP System Configurations
1
ES20 Fitted with Particulate Filter
Components used
Specifications
1
Base plate
316 stainless steel
2
Inlet process connection and material
6mm or 1/4” fitting (316 stainless steel)
3
Outlet process connection and material
6mm or 1/4” fitting (316 stainless steel)
4
Metering valve
Needle valve type
5
Filter housing
316 stainless steel (340 barg maximum), gasket (Viton®)
6
Particulate filter (inside filter housing)
Borosilicate glass microfibres (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®)
Conduit entry
Access to internal connection
10
8
14**
10
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5
6
4
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ES20 Fitted with Coalescing Filter*
14**
Components used
Specifications
12
Drainage connection and material
6mm or 1/4” fitting (316 stainless steel)
13
Coalescing filter (inside filter housing)
Borosilicate glass microfibres (99.5+% removal of 0.1
micron particles and aerosols)
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Optional Dew-Point Measurement Device
14
Components used
Specifications
Explosion Proof Dew-Point Transmitter/display
(to be ordered separately)**
Refer to Transmitter datasheet
2
ES20 Enclosure Configurations
GRP Enclosure
350mm
Depth: 2mm
www.michell.com
Stainless Steel Enclosure
500mm
457mm
530mm
Base Plate
430mm
Depth: 200mm
400mm
Depth: 200mm
12
3
Dew-Point Sampling
Technical Specifications
Electrical Specifications
Supply voltage (vacuum pump only)
230 V AC**
Operating Specifications
Operating temperature
ES20 fitted with:
Particulate or coalescing filter without monitor
Particulate or coalescing filter with monitor
Vacuum pump with or without monitor
Operating inlet pressure
ES20 fitted with:
Particulate filter
Coalescing filter
Vacuum pump
Flow rate
-15 to +60°C (+5 to +140°F)
0 to +50°C (+32 to +122°F)
0 to +40°C** (+32 to +104°F**)
0 to 20 barg (0 to 290 psig)
0 to 20 barg (0 to 290 psig)
-0.3 bar to 1 barg** (-4.4 to 14.5 psig**)
1 to 5 Nl/min (2.1 to 10.6 scfh)
Mechanical Specifications
Process connection and material
Inlet/outlet process connections via 6mm or 1/4” tube fittings, 316 stainless steel
Gas wetted parts
Stainless steel tube, filter housing and fittings (316 stainless steel), Filter element (borosilicate glass microfibres),
Transmitter sample block (316 stainless steel), Flowmeter (borosilicate glass) with Viton® seals, Pump (Teflon®)
Ingress protection
No enclosure
GRP & SS enclosures
Housing material
Dimensions
Base plate
GRP enclosure
SS enclosure
316 stainless steel
Glass fibre reinforced polyester and 4mm safety glass
316 stainless steel and 4mm safety glass
Base plate
GRP enclosure
SS enclosure
457mm x 350mm x 2mm (18” x 14” x 0.07”) (h x w x d)
530mm x 430mm x 200mm (21” x 17” x 8”) (h x w x d)
500mm x 400mm x 200mm (20” x 16” x 8”) (h x w x d)
Pressure and flow control
Atmospheric or process pressure
Vacuum pressure
Gas filtration
Electrical connections
No protection (base plate only)
IP66, NEMA 4X
Via metering valves, pressure gauge and flowmeter
Metering valve, pressure gauge, flowmeter with valve and self-regulating vacuum pump**
Particulate filter - Borosilicate glass microfibres (99.5+% removal of 0.1 micron particles)
Coalescing filter - Borosilicate glass microfibres (99.5+% removal of 0.1 micron particles and aerosols)
Base plate
GPR and SS enclosure
Via terminal rail
Via M20 plastic cable glands
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 Specifications (Optional)*
Measurement range (dp)
-100 to +20°C (-148 to +68°F) dew point, -110 to +20°C (-166 to +68°F) dew point
Accuracy (dp)
Up to ±1°C (±1.8°F) dew point
Up to ±2°C (±3.6°F) dew point
*For all other specifications refer to the Easidew Transmitter and Easidew Online datasheets, available from your local Michell Instruments
representative or visit www.michell.com
**Not available for the ES20 Easidew PRO XP version
Related Products
MDM300 Hygrometer
QMA601
With Panel Mount
Sampling System
Process Moisture
Analyzer
Michell Instruments Inc 319 Newburyport Turnpike, Suite 207, Rowley, MA 01969
Tel: 978 484 0005, Fax: 978 843 7669, Email: us.info@michell.com, Web: www.michell.com
Michell Instruments adopts a continuous development programme which sometimes necessitates specification changes without notice.
Issue no: ES20_97448_V2_US_0915
www.michell.com
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