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HYCONTROL
CAPACITIVE LEVEL
SWITCH RANGE
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Hycontrol
ME capacitive level switches provide simple, accurate and reliable level
control for a wide range of applications. They are suitable for use on
liquids, solids, slurries, pastes, granules, powders and pellets in high
temperature, high pressure and corrosive environments.
Unlike some other capacitive switches, this unit works independently of
the tank walls using an integral grounding sleeve without the need for a
reference probe, which enables it to be used in concrete, plastic or
other non metalic tanks.
This technology also provides an ideal solution for interface detection
applications such as oil on water and liquid detection underneath a layer
of foam.
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CAPACITIVE SWITCH FEATURES
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Easy installation through a 1” BSP process fitting
• High corrosion and chemical resistance as standard options
• Universal design can be used for high or low level detection
• Multiple versions with rod and cable to simplify mounting options
• High temperature versions up to 800 C
• Low maintenance technology with no moving parts
• Hazardous area certified versions ATEX approved
• Adjustable sensitivity for a wide range of products
• Adjustable time delay to stop spurious signals from surface ripple
• Anti-static probes for plastic pellet applications with high
static probability
• Remote electronics option for high vibration applications
• Interface level detection for difficult applications
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CONSTRUCTION
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1. Probe : 304SS or 316SS
2. Insulation :
UPE or PTFE
3. Grounding Sleeve :
304SS or 316SS
4. Connection :
1" BSP standard
5. Housing :
Aluminum IP65 epoxy coated
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6. Conduit entry : " BSP
7. Housing O-Ring :
NBR
8. PC board :
A, B, C, D Type
9. Sensitivity adjustment : 10pF,
20pF, 40pF
10. Cover :
Aluminum epoxy coated
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STANDARD
GENERAL PURPOSE VERSIONS
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Dimension
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Model
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ME10 A/B/C
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[STANDARD TYPE]
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ME11 A/B/C
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[ STANDARD TYPE]
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ME20 A/B/C
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[ HI-TEMP. TYPE ]
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Operating Temp.
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-20C~80C
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-20C~80C
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-20C~200C
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Probe Material
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304SS
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304SS
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304SS
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Insulation Material
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UPE
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UPE
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PTFE
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Connection
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1"BSP
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1"BSP
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1"BSP
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Sensitivity Range
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10pF, 20pF, 40pF
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10pF, 20pF, 40pF
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10pF, 20pF, 40pF
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Weight
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Approx. 1.9kg
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Approx. 1.9kg
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Approx. 2.4kg
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Enclosure Details
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Aluminum IP65
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Supply Voltage
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110/220VAC 10% or 24VDC
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Delay Time
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0~6 seconds
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Power Consumption
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2W
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Contact Rating
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5A/240VAC or 5A/30VDC, SPDT
or NPN 100mA
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HIGH
TEMPERATURE AND CORROSION RESISTANT VERSIONS
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Dimension
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Model
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ME30 A/B/C
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[CORROSION-PROOF]
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ME32 A/B/C
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[ CORROSION-PROOF ]
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Operating Temp.
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-20C~800C
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-20C~80C
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-20C~200C
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Probe Material
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304SS
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304SS
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Wetted part: PVDF coating
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Insulation Material
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CERAMIC
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Wetted part: PVDF coating
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UPE
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Connection
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2"x5kg/cm2 JIS Flange
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1-1/2"x10kg/cm2 JIS
Flange (UPE)
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1-1/2"x10kg/cm2 JIS
Flange (SS) with PVDF Washer (5mm)
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Sensitivity Range
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10pF, 20pF
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10pF
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10pF, 20pF
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Weight
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Approx. 6.5kg
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Approx. 2kg
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Depends on the length
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Enclosure Details
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Aluminum IP65
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Supply Voltage
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110/220VAC 10% or 24VDC
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Delay Time
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0~6 seconds
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Power Consumption
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2W
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Contact Rating
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5A/240VAC or 5A/30VDC, SPDT
or NPN 100mA
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REMOTE AND
CABLE VERSIONS
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Dimension
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Model
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ME40 A/B/C
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[REMOTE PROBE TYPE]
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ME50 A/B/C
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[ WIRE-PROBE TYPE]
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ME60 A/B/C
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[ PLATE TYPE ]
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Operating Temp.
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-20C~100C
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-20C~80C
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-20C~80C
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Probe Material
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304SS
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304SS cable
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304SS
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Insulation Material
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UPE
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UPE
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UPE
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Connection
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1"BSP (SS)
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1"BSP (SS)
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2-1/2"x5kg/cm2 JIS
Flange (SS)
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Sensitivity Range
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10pF
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10pF, 20pF, 40pF
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10pF, 20pF, 40pF
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Weight
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Approx. 3kg
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Approx. 4.1kg
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Approx. 3.2kg
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Enclosure Details
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Aluminum IP65
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Supply Voltage
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110/220VAC 10% or 24VDC
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Delay Time
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0~6 seconds
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Power Consumption
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2W
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Contact Rating
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5A/240VAC or 5A/30VDC, SPDT
or NPN 100mA
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INTRINSICALLY
SAFE VERSIONS FOR HAZARDOUS AREAS
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Dimension
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Model
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ME70D (with EX-75)
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[STANDARD TYPE]
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ME72D (with EX-75U)
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[ HI-TEMP. TYPE]
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ME75D (withEX-75U)
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[ WIRE PROBE TYPE ]
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Operating Temp.
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-20C~80C
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-20C~200C
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-20C~80C
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Probe Material
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304SS / 316 SS
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304SS / 316 SS
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304SS / 316 SS cable
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Insulation Material
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PTFE or UPE
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PTFE or UPE
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PTFE or UPE
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Connection
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1"BSP (SS)
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1"BSP (SS)
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1"BSP (SS)
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Sensitivity Range
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10pF, 20pF, 40pF
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10pF, 20pF, 40pF
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10pF, 20pF, 40pF
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Weight
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Approx. 1.9kg
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Approx. 2.4kg
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Approx. 4.1kg
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Enclosure Details
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Aluminum IP65
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Supply Voltage
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16~24VDC
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Enclosure Protection
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ATEX EEx ia iiC (*)
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Power Consumption
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2W
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Contact Rating
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NPN 100mA
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INTRINSICALLY
SAFE VERSIONS FOR HAZARDOUS AREAS
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Dimension
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Model
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ME76D (with EX-75)
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[PLATE TYPE]
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ME77D (with EX-75U)
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[ ANTI-STATIC TYPE] HI-TEMP.
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ME78D (withEX-75U)
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[ ANTI-STATIC TYPE ]
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Operating Temp.
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-20C~80C
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-20C~200C
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-20C~80C
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Probe Material
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304SS / 316 SS
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PTFE or UPE coating
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PTFE or UPE coating
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Insulation Material
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PTFE or UPE
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PTFE or UPE
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PTFE or UPE
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Connection
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2-1/2"x5kg/cm2 JIS
Flange (SS)
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1"BSP (SS)
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1"BSP (SS)
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Sensitivity Range
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10pF, 20pF, 40pF
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10pF, 20pF
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10pF, 20pF
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Weight
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Approx. 3.2kg
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Approx. 3.1kg
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Approx. 2kg
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Enclosure Details
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Aluminum IP65
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Supply Voltage
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16~24VDC
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Enclosure Protection
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ATEX EEx ia iiC (*)
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Power Consumption
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2W
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Contact Rating
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NPN 100mA
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ANTI-STATIC
AND TEFLON PROBE VERSIONS
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Dimension
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Model
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ME80 A/B/C
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[ANTI-STATIC TYPE]
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ME81 A/B/C
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[ ANTI-STATIC TYPE] HI-TEMP.
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Operating Temp.
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-20C~80C
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-20C~200C
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Probe Material
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UPE coating
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PTFE coating
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Insulation Material
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UPE
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PTFE
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Connection
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1"BSP (SS)
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1"BSP (SS)
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Sensitivity Range
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10pF, 20pF
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10pF, 20pF
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Weight
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Approx. 2kg
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Approx. 2.5kg
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Enclosure Details
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Aluminum IP65
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Supply Voltage
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110/220VAC 10% or 24VDC
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Delay Time
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0-6 seconds
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Power Consumption
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2W
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Contact Rating
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5A/240VAC or 5A/30VDC, SPDT
or NPN 100mA
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HAZARDOUS AREA
INTRINSICALLY SAFE VERSION
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EX-75U
Zener barrier provides intrinsic safety to the ME7D type level switch
by limiting the current from the control module in the safe area to the
level switch in the hazardous zoned area.Please contact the office for
a copy of the certificates and more information if required.
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1.
Supply voltage :
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110 / 220VAC
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2.
Power consumption :
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2W
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3.
Input signal :
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NPN transistor
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resistance Ri= 500W
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4.
Output voltage :
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16~24 VDC
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5.
Short circuit current :
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25mA max.
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6.
Relay output :
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SPDT
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10A /30VDC
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10A /220VAC
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7.
Operating temp. :
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-20C ~ 60C
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8.
Weight :
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0.3 kg
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9.
Enclosure mounting :
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DIN Rail
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ADJUSTMENT
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COARSE
CALIBRATION
With the probe in
contact with the material being detected, set the SENSITIVITY ADJ
pointer to position H and then using a blade screwdriver set the COARSE
adjustment until the INDICATOR lamp is on. Rotating the COARSE
adjustment clockwise and counter-clockwise will turn the INDICATOR lamp
on and off. Ensure the lamp is on before moving on to adjusting the
sensitivity.
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DELAY
FUNCTION SETTING
This feature is
used to stop any spurious signals to the switch from surface ripple or
agitation of the product. It also protects the relay from premature
wear by eliminating contact chatter by adding a small time delay from
when product contacts the probe .
The factory setting
is zero seconds with the DELAY screw fully counter clockwise.
Turning the screw in a clockwise direction introduces a delay between
the INDICATOR lamp coming on and the relay changing its state.
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SENSITIVITY
ADJUSTMENT
After setting the
COARSE calibration the INDICATOR lamp will switch on when probe is
touching the material and off when in free air.
Make sure the probe is in contact with the material and then turn the
SENSITIVITY ADJ knob clockwise until the INDICATOR lamp turns off. Set
the SENSITIVITY ADJ pointer half way between H and the point that the
INDICATOR lamp switches off.
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INSTALLATION
GUIDE
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The
grounding sleeve must be mounted to protrude at least 30mm from the
vessel wall.
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For
the ME60 type to be mounted properly the vessel walls should not exceed
25mm thickness.
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To
prevent false readings on solids applications it is best to make sure
the material flows symmetrically. If the inlet is not located in the
centre portion of the tank roof, check the flow pattern (a angle) of
your material and place the probe in the
Appropriate location.
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If
the probe is mounted on the top, make sure the length of probe is
enough to touch the highest level of raw material.
The ME50 type must have at least 300mm from the silo wall.
The ME60 type is usually
Located at the lower position.
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For
Non-Stationary or material that will be vibrated a separate control
unit such as the ME40 type is recommended.
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Where
possible install the probe away from the inlet to reduce the risk of
inflowing material damaging the probe. If the probe is near an inlet,
we recommend placing a protective cover 200mm above the probe. The
cover should be parallel to the probe and the same length .
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If
multiple probes are mounted
In the same vessel they must be separated by at least 300 mm to reduce
probe to probe interference .
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The
probe should not be mounted underneath a liquid inlet otherwise it will
switch on erroneously.
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If
the tank is equipped with an agitator, please use the time-delay
function to stop spurious signals
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The
cable inlet should face downward to avoid rainwater ingress.
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Mounting
the probe at a 20 incline optimizes the results and increases the
switch sensitivity.
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Mounting
the probe at top of tank will help avoid material bridges from forming
and reduce false alarms.
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ORDER
INFORMATION
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•Tolerance of
the total product length is 5mm.
•Characteristics, specifications and dimensions are subject to
change without notice.
•Please contact Hycontrol if you have a special request not
mentioned in the above
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Hycontrol
Level switches with this option have an additional pair of terminals
provided in the switch head that simply require a push button switch to
connect these two terminals together and this is usually mounted at
ground level local to the silo fill point.
After pushing this
button the circuit is then loaded as if a product has touched the
active part of the probe and the electronics (if working correctly)
will detect this change in capacitance and activate the relay to change
its state. Any audio or visual alarms wired to this relay will then be
activated and will continue until the ground level test button is
released. If the test is successful then the operator can then proceed
to fill the silo, confident that the high alarm will operate if required
to do so.
Hycontrol provide a
complete alarm and test panel solution for single or multipoint
applications however a simple push button can easily be retrofitted to
existing panel installations with little or no disruption to the plant
operations providing the alarms and sirens already exist!
This ground level
test facility is offered as an option on Hycontrol’s range of
capacitive, admittance and vibrating level swiches.
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