Electronic Pressure Monitor (PK8731)

Basic Attributes

• Parameter

  • Factory setting

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• Max. Voltage Drop Switching Output AC(V)

  • 2
  • 3

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• Min. Bursting Pressure(kPa)

  • 3000
  • 5000

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• MAWP (for Applications According to CRN)(bar)

  • -25-801700
  • -25-801100
  • -25-80350
  • -25-80300
  • -25-80150
  • -25-8050

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• Measuring Range(kPa)

  • -100-1000
  • -100-100
  • 0-250

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• Conditionally Suitable For

  • For gaseous media the application is limited to max. 25 bar.
  • use in gases at pressures > 25 bar only on request
  • other media on request

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• Connection

  • 60 ms
  • pnp

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• Measuring Element

  • ceramic-capacitive pressure measuring cell
  • metallic thin film cell

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• IO-Link Resolution Temperature(K)

  • 0.2

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• Min. Bursting Pressure(MPa)

  • 15
  • 30
  • 35
  • 60
  • 65
  • 100
  • 110
  • 120
  • 170

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• Process Connection Sealing

  • FKM (to DIN 3869)

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• Overvoltage Protection

  • Yes; (< 40 V)
  • Yes; (< 60 V DC / < 40 V AC)

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• Permanent Current Rating of Switching Output AC(mA)

  • 100
  • 250; ((-70 °C) 1000 (-60 °C) 1500 (-45 °C) 2500 (-20 °C))

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• Max. Load(Ω)

  • 300

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• Min. Load Resistance(Ω)

  • 90000

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• IO-Link Resolution Pressure(MPa)

  • 0.0005
  • 0.001
  • 0.002
  • 0.005
  • 0.01
  • 0.02

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• Operating Voltage Tolerance(%)

  • 5-10
  • < 10
  • 20

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• Switching Cycles (Mechanical)

  • 100 million

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• Switching Frequency AC(Hz)

  • < 160
  • < 170

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• Nominal Voltage AC(V)

  • < 250

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• Communication Interface

  • IO-Link

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• Tightening Torque(Nm)

  • 2-3 turns after hand-fastening; recommended tightening torque; depends on lubrication. seal and pressure rating
  • 25
  • 25; (recommended tightening torque; depends on lubrication. seal and pressure rating)
  • 25-35; (recommended tightening torque; depends on lubrication. seal and pressure rating)
  • 30-50; (recommended tightening torque; depends on lubrication. seal and pressure rating)
  • 50; (recommended tightening torque; depends on lubrication. seal and pressure rating)

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• Special Feature

  • Gold-plated contacts

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• Analogue Input (Current)(mA)

  • 0-20

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• No Dead Space

  • Yes

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• Short-Circuit Proof

  • No

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• IO-Link Revision

  • 1.1

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• Analogue Input (Voltage)(V)

  • 0-10

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• Measuring Range(MPa)

  • -0.1-2.5
  • 0-40
  • 0-25
  • 0-10
  • 0-2.5

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• Installation

  • freely rotatable housing 350°

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• Transmission Type

  • COM2 (38.4 kBaud)

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• Min. Bursting Pressure(bar)

  • 50
  • 150
  • 350
  • 650
  • 850
  • 900

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• MAWP (for Applications According to CRN)(mbar)

  • -25-8030000

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• Type of Pressure

  • relative pressure
  • relative pressure; vacuum

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• Number of Inputs and Outputs

  • Number of digital outputs: 1
  • Number of digital outputs: 2

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• Min. Pressure Cycles

  • 50 million
  • 60 million; (at 1.2 times nominal pressure)
  • 100 million

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• Protection

  • IP 65
  • IP 65; IP 67
  • IP 67
  • IP 67; IP 69K

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• Electrical Design

  • NPN
  • PNP
  • PNP/NPN
  • Triac

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• Measuring Range(bar)

  • -1-25
  • -1-10
  • -1-1
  • -0.124-2.5
  • 0-600
  • 0-400
  • 0-250
  • 0-100
  • 0-60
  • 0-25
  • 0-10
  • 0-2.5
  • 0-1

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• Materials

  • FKM; PA; PBT; PC; stainless steel (1.4301 / 304)
  • stainless steel (1.4301 / 304); PC; PBT; PA; FKM
  • stainless steel (1.4301 / 304); PPS; PC; PBT; PEI; FKM
  • stainless steel (1.4301 / 304); stainless steel (1.4404 / 316L); PC; PBT; PEI; FKM; EPDM/X
  • stainless steel (1.4301 / 304); stainless steel (1.4404 / 316L); PC; PBT; PEI; FKM; PTFE
  • stainless steel (1.4301 / 304); stainless steel (1.4404 / 316L); PC; PEI; FKM; EPDM/X; PTFE
  • stainless steel (1.4305 / 303); PBT; PC; PA; FKM
  • PBT; PC; FKM; stainless steel (1.4404 / 316L)
  • stainless steel (1.4404 / 316L); PC; PBT; PEI; FKM; PTFE
  • stainless steel (1.4404 / 316L); PBT+PC-GF30; PBT-GF20; PC
  • 1.4542 (17-4 PH / 630); stainless steel (1.4404 / 316L); PEI
  • 1.4542 (17-4 PH / 630); stainless steel (1.4404 / 316L); PBT+PC-GF30; PBT-GF20; PC

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• Current Consumption(mA)

  • < 10
  • < 15
  • < 25
  • < 35
  • < 50
  • < 90

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• Protection Class

  • II
  • III

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• Application

  • For industrial applications
  • flush mountable for the food and beverage industry

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• Type of Short-Circuit Protection

  • pulsed

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• Process Connection

  • threaded connection 1/4"NPT external thread
  • threaded connection 1/4"NPT internal thread
  • threaded connection G 1/4 internal thread
  • threaded connection 1/4"NPT external thread internal thread:M5
  • threaded connection G 1/4 external thread internal thread:M5
  • threaded connection R 1/4 external thread internal thread:M5
  • threaded connection G 1/4 external thread (DIN EN ISO 1179-2); internal thread:M5
  • threaded connection G 1/8 internal thread
  • threaded connection G 3/4 external thread
  • threaded connection 7/16"- 20 UNF internal thread
  • threaded connection Aseptoflex external thread Aseptoflex

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• Operating Voltage(V)

  • 9.6-32 DC
  • 9.6-32 DC; (according to EN 50178 SELV/PELV)
  • 18-36 DC; (according to EN 50178 SELV/PELV)
  • 18-32 DC
  • 18-30 DC
  • 18-30 DC; (according to EN 50178 SELV/PELV)
  • 24 AC / 18-55 DC
  • 85-265 AC

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• Electrical Connection

  • Connector: 1 x M12
  • Connector: 1 x M12; Contacts: gold-plated
  • miniature fuse to IEC60127-2 sheet 1; ≤ 5 A; fast acting|Connector: 1 x 1/2"

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• Ambient Temperature(°C)

  • -40-90
  • -25-85
  • -25-80
  • -20-80
  • -20-60

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• Reverse Polarity Protection

  • No
  • Yes

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• Output Function

  • complementary
  • normally open
  • normally open / normally closed; (parameterisable)

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• Medium Temperature(°C)

  • -40-90
  • -25-125; (145 max. 1h)
  • -25-80
  • -20-60
  • 0-60

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• Total Number of Outputs

  • 1
  • 2

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• Switching Frequency DC(Hz)

  • 85
  • 100
  • < 130
  • < 170

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• Restrictor Element Integrated

  • No (can be retrofitted)
  • Yes

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• Output Signal

  • Switching signal
  • Switching signal; IO-Link; (configurable)

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• Short-Circuit Protection

  • Yes

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• Application Media

  • use in gases at pressures > 25 bar only on request
  • Liquids
  • Liquids and gases
  • compressed air
  • viscous media and liquids with suspended particles; liquids and gases

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• Overload Protection

  • No
  • Yes

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• Min. Insulation Resistance(MΩ)

  • 100; (500 V DC)

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• Display

  • Switching status: 2 x LED, yellow
    With scale: Yes
  • Display unit: 3 x LED, green (MPa)
    switching status: 2 x LED, yellow
    measured values: alphanumeric display, red/green 4-digit
  • Display unit: 3 x LED, green (bar, psi, MPa)
    switching status: 2 x LED, yellow
    measured values: alphanumeric display, red/green 4-digit
  • Display unit: 3 x LED, green (bar, psi, kPa)
    switching status: 2 x LED, yellow
    measured values: alphanumeric display, red/green 4-digit
  • Display unit: 3 x LED, green (kPa)
    switching status: 2 x LED, yellow
    measured values: alphanumeric display, red/green 4-digit
  • Display unit: 3 x LED, green
    switching status: 2 x LED, yellow
    function display: alphanumeric display, 4-digit
  • Display unit: 3 x LED, green
    switching status: 2 x LED, yellow
    function display: alphanumeric display, 4-digit
    measured values: alphanumeric display, 4-digit
  • Display unit: 4 x LED, green (bar, psi, kPa, inHg)
    switching status: 2 x LED, yellow
    measured values: alphanumeric display, red/green 4-digit
  • Display unit: 4 x LED, green (kPa)
    switching status: 2 x LED, yellow
    measured values: alphanumeric display, red/green 4-digit
  • Display unit: 4 x LED, green (mbar, psi, kPa, inHg)
    switching status: 2 x LED, yellow
    measured values: alphanumeric display, red/green 4-digit
  • Switching status: LED, red
    function display: 7-segment LED display
    measured values: 7-segment LED display
  • Switching status: LED, red
    function display: 7-segment LED display
    measured values: 7-segment LED display
    Display unit: bar; psi; Mpa
  • operation: LED, green
    switching status: LED, yellow
  • operation: LED, green
    switching status: LED, yellow
    With scale: Yes

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• Materials (Wetted Parts)

  • stainless steel (1.4305 / 303); ceramics; FKM
  • stainless steel (1.4305 / 303); 1.4542 (17-4 PH / 630)
  • stainless steel (1.4404 / 316L)
  • stainless steel (1.4404 / 316L); FKM
  • stainless steel (1.4404 / 316L); ceramics; FKM
  • stainless steel (1.4404 / 316L); Al2O3 (ceramics); FKM
  • 1.4542 (17-4 PH / 630)
  • stainless steel (1.4567 / 304Cu); brass; FKM; PPS; silicon (coated)
  • ceramics (99.9 % Al2O3); PTFE; stainless steel (1.4435 / 316L); surface characteristics: Ra < 0.4 / Rz 4
  • ceramics (99.9 % Al2O3); stainless steel (1.4435 / 316L); surface characteristics: Ra < 0.4 / Rz 4; PTFE

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