EX-HS 203 / 206 / 210 / 220 / 230
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According to LVD 2006/95/EC
test required IEC 60730-1 (4th Edi.): 2010 / IEC 60730-2-6 (2th Edi.): 2007
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Certification Criteria
: Protective equipment compulsory safety certification Notice
(Ministry of Employment and Labor Notice 2013-54)
Certification Number : 15-GA2BO-0944X
Certification ratings : Ex d IIC T4 IP67
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DIMENSION
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APPLICATION
Explosion-proof box of this product has received safety certification from Korea Gas Safety Corporation to
produce and mount a 3rd party pressure control (pressure switch) at the request of the consumer.
GENERAL SPECIFICATION
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Ambient temperature
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Air, Water, Fluorinated refrigerants
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Ambient temperature
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-15 ∼ 60 ℃
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Medium temperature
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-10 ~ 120 ℃
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Contact mechanism
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SPDT
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Protection grade
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IP 67
6- Dust tight, No ingress of dust
7- Protection against strong jets of water from all
directions.
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MATERIALS
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Explosion-proof housing
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Aluminium diecast
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Internal housing base
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Iron
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Bellows
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Bronze
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Connection port
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Brass
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Diaphragm
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HNBR
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Pressure connection
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Stainless steel
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TECHNICAL SPECIFICATION
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MODEL
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Pressure Range
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Differential Range
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Factory
Setting On/Off
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Max.
Bellows Pressure
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Switch Action
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Bar
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Psig
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Bar
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Psig
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Bar
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Psig
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Bar
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Psig
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EX-HS 203
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-0.5 to 3
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20 to 43
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0.35 to 2
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5 to 30
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0.5/1.5
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7/21
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11
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160
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Auto Type SPDT opens
High/Low Action
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EX-HS 206
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-0.5 to 6
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20 to 87
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0.6 to 4
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9 to 58
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1.5/2.5
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29/43
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16.5
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240
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EX-HS 210
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1 to 10
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15 to 145
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1 to 3
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15 to 43
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4/6
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58/87
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16.5
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240
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EX-HS 220
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5 to 20
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73 to 290
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3 to 5
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43 to 72
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12/15
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174/217
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40
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580
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EX-HS 230
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5 to 30
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73 to 435
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3 to 10
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43 to 145
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15/20
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217/290
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40
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580
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ELECTRICAL FUNCTION
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Rated Voltage
Rated Current |
Power Factor
cosϕ
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AC
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DC
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125
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250
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450
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25
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125
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Non-Inductive Current
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1
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10
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5
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2
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5
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0.5
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Inductive Current
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Running Current
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0.75
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8.5
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4.5
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1
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2
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0.2
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Rocked Roter Current
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0.45
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40
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20
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10
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10
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5
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PRESSURE ADJUSTING
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１
[Figure1]
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[Figure1] Open the cap of pressure range adjusting screw
and the differential pressure adjusting screw.
- If any flammable materials are around, never open.
- Make sure that the power is completely shut off.
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2
[Figure 2]
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[Figure 2] Loosen the lock as a hexagon wrench and turn the open.
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3
 
[Figure 3] [Figure 4]
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[Figure 4]. Insert a screwdriver into the screw hole of the open differential pressure regulation
and pressure ranges, such as turning the screw to adjust the pressure.
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 - After pressure adjustment,
be sure to close the lid of the compartment and tighten the cap of screw for the explosion-proof features.
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4
 
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1. Turn the pressure range adjusting screw to suit the
maximum pressure required.
2. Turn the differential pressure adjusting screw to suit
the needs of differential pressure
3. While operating within a set pressure range, it will be
ON state if it reaches the set differential pressure.
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■ ATTENTION
All installation/maintenance work must be carried out by skilled staff. Always check that the system is gas-tight after installation.
Failure to follow this manual can result in dangerous situations or damage to the product.
■ INSTALLATION
1. Warning
- Select a product based on the operating pressure,depending on the model specifications table in
this manual before installation.
- All the gas supply must be shut off before installation.
- Make sure that the pipeline is free from impurities and vibration-free before installation.
- Only the "Pressure adjusting screw" and "Differential pressure adjusting screw" can be adjusted.
- Do not bend sharply when pipe connections occur.
- Keep the line length slightly longer to prevent vibration.
- Before opening be aware of risks of dangerous ignition.
- Close the cover tightly before operating.
- Function and holding tests must be carried out after installation.
- When installing to ammonia system, please contact us.
2. Installation Location
- This product can be installed in any position.
■ ADJUSTMENT
Before connecting the pipe, adjust setting value first.
■ Standards and specifications of this product are subject to change without prior notice for improved performance.
