Endress+Hauser PTP31B, PTC31B Specifications
TI01130P/00/EN/06.18
71422364
2018-12-20
Products Solutions Services
Technical Information
Ceraphant PTC31B, PTP31B
Process pressure measurement
Pressure switch for safe measurement and
monitoring of absolute and gauge pressure
Application
The Ceraphant is a pressure switch for the measurement of absolute and gauge
pressure in gases, vapors, liquids and dust. The Ceraphant can be used internationally
thanks to a wide range of approvals and process connections.
Your benefits
• High reproducibility and long-term stability
• Reference accuracy: up to 0.3%
• Customized measuring ranges
– Turn down up to 5:1
– Sensor for measuring ranges up to 400 bar (6 000 psi)
• Housing and process isolating diaphragm made of 316L
• Optionally available with IO-Link
Operation and electrical connection in accordance with VDMA 24574-1:2008
Table of contents
Ceraphant PTC31B, PTP31B
Document information ....................... 4
Document function ............................ 4
Symbols used ................................ 4
Documentation ............................... 5
Terms and abbreviations ........................ 6
Turn down calculation .......................... 7
Function and system design ................... 8
Measuring principle - process pressure measurement ..... 8
Measuring system ............................. 8
Device features ............................... 9
Product design .............................. 11
System integration ........................... 11
Input .................................... 12
Measured variable ............................ 12
Measuring range ............................ 12
Output .................................. 14
Output signal ............................... 14
Range of adjustment .......................... 14
Switching capacity ............................ 14
Signal range 4 to 20 mA ........................ 14
Load (for devices with analog output) ............... 14
Signal on alarm 4 to 20 mA ...................... 15
Dead time, time constant ....................... 15
Dynamic behavior ............................ 15
Dynamic behavior of switch output ................. 16
Damping .................................. 16
Measuring uncertainty for small absolute pressure
measuring ranges ............................ 22
Influence of the installation position ................ 22
Resolution ................................. 22
Reference accuracy ........................... 22
Thermal change of the zero output and the output span ... 22
Long-term stability ........................... 22
Switch-on time .............................. 23
Installation ............................... 23
Installation conditions ......................... 23
Influence of the installation position ................ 23
Mounting location ............................ 23
Mounting instructions for oxygen applications ......... 25
Environment .............................. 26
Ambient temperature range ..................... 26
Storage temperature range ...................... 26
Climate class ............................... 26
Degree of protection .......................... 26
Vibration resistance ........................... 26
Electromagnetic compatibility .................... 26
Process .................................. 27
Process temperature range for devices with ceramic
process isolating diaphragm ..................... 27
Process temperature range for devices with metallic
process isolating diaphragm ..................... 27
Pressure specifications ......................... 27
Power supply ............................. 17
Terminal assignment .......................... 17
Supply voltage .............................. 18
Current consumption and alarm signal .............. 18
Power supply fault ............................ 18
Electrical connection .......................... 18
Cable specification ............................ 19
Residual ripple .............................. 19
Influence of power supply ....................... 19
Overvoltage protection ........................ 19
Performance characteristics of ceramic process
isolating diaphragm ........................ 20
Reference operating conditions ................... 20
Measuring uncertainty for small absolute pressure
measuring ranges ............................ 20
Influence of the installation position ................ 20
Resolution ................................. 20
Reference accuracy ........................... 20
Thermal change of the zero output and the output span ... 20
Long-term stability ........................... 20
Switch-on time .............................. 21
Performance characteristics of metal process
isolating diaphragm ........................ 22
Reference operating conditions ................... 22
Mechanical construction .................... 28
Design, dimensions ........................... 28
Electrical connection .......................... 28
Housing ................................... 29
Process connections with internal, ceramic process
isolating diaphragm ........................... 30
Process connections with internal, ceramic process
isolating diaphragm ........................... 31
Process connections with internal, ceramic process
isolating diaphragm ........................... 32
Process connections with internal, ceramic process
isolating diaphragm ........................... 32
Process connections with internal, metal process isolating
diaphragm ................................. 33
Process connections with internal, metal process isolating
diaphragm ................................. 34
Process connections with internal, metal process isolating
diaphragm ................................. 35
Process connections with internal, metal process isolating
diaphragm ................................. 35
Process connections with flush-mounted, metal process
isolating diaphragm ........................... 36
Materials in contact with process .................. 37
Materials not in contact with process ............... 38
Cleaning .................................. 39
Operability ............................... 40
IO-Link (optional) ............................ 40
2 Endress+Hauser
Ceraphant PTC31B, PTP31B
Operation with local display ..................... 40
Device Search (IO-Link) ........................ 41
Functions of switch output ...................... 42
Certificates and approvals ................... 44
CE mark ................................... 44
RoHS ..................................... 44
RCM-Tick marking ............................ 44
Pressure Equipment Directive 2014/68/EU (PED) ....... 44
Other standards and guidelines ................... 45
CRN approval ............................... 45
Calibration unit .............................. 45
Calibration ................................. 46
Inspection certificates .......................... 46
Ordering information ....................... 46
Scope of delivery ............................. 46
Accessories ............................... 47
Weld-in adapter ............................. 47
M12 plug connectors .......................... 47
Documentation ............................ 48
Field of Activities ............................ 48
Technical Information ......................... 48
Operating Instructions ......................... 48
Brief Operating Instructions ..................... 48
Registered trademarks ...................... 48
Endress+Hauser 3
Document information
DANGER
WARNING
CAUTION
NOTICE
A
,…,
1.
2.
3.
Ceraphant PTC31B, PTP31B
Document function
The document contains all the technical data on the device and provides an overview of the
accessories and other products that can be ordered for the device.
Symbols used Safety symbols
Symbol Meaning
Electrical symbols
Symbol Meaning Symbol Meaning
DANGER!
This symbol alerts you to a dangerous situation. Failure to avoid this situation will result in
serious or fatal injury.
WARNING!
This symbol alerts you to a dangerous situation. Failure to avoid this situation can result in
serious or fatal injury.
CAUTION!
This symbol alerts you to a dangerous situation. Failure to avoid this situation can result in
minor or medium injury.
NOTICE!
This symbol contains information on procedures and other facts which do not result in
personal injury.
Protective ground connection
A terminal which must be connected
to ground prior to establishing any
other connections.
Ground connection
A grounded terminal which, as far as
the operator is concerned, is
grounded via a grounding system.
Symbols for certain types of information
Symbol Meaning
Permitted
Procedures, processes or actions that are permitted.
Forbidden
Procedures, processes or actions that are forbidden.
Tip
Indicates additional information.
Reference to documentation
Reference to page
Reference to graphic
Visual inspection
Symbols in graphics
Symbol Meaning
1, 2, 3 ... Item numbers
Series of steps
A, B, C, ... Views
4 Endress+Hauser
Ceraphant PTC31B, PTP31B
Documentation
The document types listed are available:
In the Download Area of the Endress+Hauser Internet site: www.endress.com → Download
Brief Operating Instructions (KA): getting the 1st measured value quickly
Devices with IO-Link: KA01404P
These instructions contain all the essential information from incoming acceptance to initial
commissioning (not for devices with IO-Link).
Operating Instructions (BA): your comprehensive reference
These Operating Instructions contain all the information that is required in various phases of the life
cycle of the device: from product identification, incoming acceptance and storage, to mounting,
connection, operation and commissioning through to troubleshooting, maintenance and disposal.
Endress+Hauser 5
Terms and abbreviations
URL OPLMWP
LRL
0
p
LRV
URV
1
2
3
4
Ceraphant PTC31B, PTP31B
A0029505
Item Term/
abbreviation
1 OPL The OPL (over pressure limit = sensor overload limit) for the measuring device
2 MWP The MWP (maximum working pressure) for the sensors depends on the lowest-
3 Maximum sensor
measuring range
4 Calibrated/adjusted
span
p - Pressure
- LRL Lower range limit
- URL Upper range limit
- LRV Lower range value
- URV Upper range value
- TD (turn down) Turn down
Explanation
depends on the lowest-rated element, with regard to pressure, of the selected
components, i.e. the process connection has to be taken into consideration in
addition to the measuring cell. Also observe pressure-temperature dependency. For
the relevant standards and additional notes, see the "Pressure specifications" section
→ 27 .
The OPL may only be applied for a limited period of time.
rated element, with regard to pressure, of the selected components, i.e. the process
connection has to be taken into consideration in addition to the measuring cell.
Also observe pressure-temperature dependency. For the relevant standards and
additional notes, see the "Pressure specifications" section → 27 .
The MWP may be applied at the device for an unlimited period.
The MWP can also be found on the nameplate.
Span between LRL and URL
This sensor measuring range is equivalent to the maximum calibratable/adjustable
span.
Span between LRV and URV
Factory setting: 0 to URL
Other calibrated spans can be ordered as customized spans.
Example - see the following section.
6 Endress+Hauser
Ceraphant PTC31B, PTP31B
LRV
URLURV
LRL
1 = 2
3
Turn down calculation
1 Calibrated/adjusted span
2 Zero point-based span
3 URL sensor
Example
• Sensor:10 bar (150 psi)
• Upper range value (URL) = 10 bar (150 psi)
Turn down (TD):
A0029545
• Calibrated/adjusted span: 0 to 5 bar (0 to 75 psi)
• Lower range value (LRV) = 0 bar (0 psi)
• Upper range value (URV) = 5 bar (75 psi)
TD =
URL
|URV - LRV|
10 bar (150 psi)
TD =
|5 bar (75 psi) - 0 bar (0 psi)|
In this example, the TD is 2:1.
This span is based on the zero point.
= 2
Endress+Hauser 7
Function and system design
1
2
3
4
p
p
1
3
4
2
Ceraphant PTC31B, PTP31B
Measuring principle process pressure
measurement
Devices with ceramic process isolating diaphragm (Ceraphire®)
The ceramic sensor is an oil-free sensor, i.e. the process pressure acts directly on the robust ceramic
process isolating diaphragm and causes it to deflect. A pressure-dependent change in capacitance is
measured at the electrodes of the ceramic substrate and the process isolating diaphragm. The
measuring range is determined by the thickness of the ceramic process isolating diaphragm.
Advantages:
• Guaranteed overload resistance up to 40 times the nominal pressure
• The ultrapure 99.9% ceramic (Ceraphire®, see also "www.endress.com/ceraphire") ensures:
– Extremely high chemical durability
– High mechanical durability
• Can be used in absolute vacuum
• Small measuring ranges
A0020465
1 Air pressure (gauge pressure sensors)
2 Ceramic substrate
3 Electrodes
4 Ceramic process isolating diaphragm
Devices with metallic process isolating diaphragm
The process pressure deflects the metal process isolating diaphragm of the sensor and a fill fluid
transfers the pressure to a Wheatstone bridge (semiconductor technology). The pressure-dependent
change in the bridge output voltage is measured and evaluated.
Advantages:
• Can be used for high process pressures
• Fully welded sensor
• Slim, flush-mounted process connections available
A0016448
1 Silicon measuring element, substrate
2 Wheatstone bridge
3 Channel with fill fluid
4 Metal process isolating diaphragm
Measuring system
A complete measuring system comprises:
8 Endress+Hauser
Ceraphant PTC31B, PTP31B
1
2
3
1 PLC (programmable logic control)
2 e.g. RMA42 / RIA45 (if required)
3 Device
Device features Field of application
• PTC31B: Gauge and absolute pressure
• PTP31B: Gauge and absolute pressure
Process connections
PTC31B:
• Thread
• Thread ANSI
• Thread M24 x 1.5
• Thread JIS
PTP31B:
• Thread ISO 228, also flush-mount
• Thread ASME
• Thread DIN 13
• Thread ASME
• Thread JIS
A0021924
Measuring ranges
• PTC31B: from 0 to +100 mbar (0 to +1.5 psi) to 0 to +40 bar (0 to +600 psi).
• PTP31B: from 0 to +400 mbar (0 to +6 psi) to 0 to +400 bar (0 to +6 000 psi).
OPL (depends on the measuring range)
• PTC31B: max. 0 to +60 bar (0 to +900 psi)
• PTP31B: max. 0 to +600 bar (0 to +9 000 psi)
MWP
• PTC31B: max. 0 to +40 bar (0 to +600 psi)
• PTP31B: max. 0 to +40 bar (0 to +600 psi)
Process temperature range (temperature at process connection)
• PTC31B: –25 to +100 °C (–13 to +212 °F)
• PTP31B: –40 to +100 °C (–40 to +212 °F)
Ambient temperature range
PTC31B: –20 to +70 °C (–4 to +158 °F)(in the range of the temperature limits with restrictions in
optical properties, such as display speed and contrast)
PTP31B: –20 to +70 °C (–4 to +158 °F)(in the range of the temperature limits with restrictions in
optical properties, such as display speed and contrast)
Reference accuracy
• PTC31B: standard: up to 0.5 %; platinum: up to 0.3 %
• PTP31B: standard: up to 0.5 %; platinum: up to 0.3 %
Supply voltage
PTC31B: 10 to 30 V DC
PTC31B IO-Link: 10 to 30 V DC at a DC power unit
PTP31B: 10 to 30 V DC
Endress+Hauser 9
Ceraphant PTC31B, PTP31B
PTB31B IO-Link: 10 to 30 V DC at a DC power unit
IO-Link communication is guaranteed only if the supply voltage is at least 18 V.
Output
Devices with IO-Link:
c/Q output for communication (SIO mode (switch output))
PTC31B:
• 1 x PNP switch output (three-wire) (not with IO-Link)
• 2 x PNP switch output (four-wire), IO-Link
• 1 x PNP switch output + 4 to 20 mA output (four-wire), IO-Link
PTP31B:
• 1 x PNP switch output (three-wire) (not with IO-Link)
• 2 x PNP switch output (four-wire), IO-Link
• 1 x PNP switch output + 4 to 20 mA output (four-wire), IO-Link
Material
PTC31B:
• Housing made from 316L (1.4404)
• Process connections made from 316L
• Process isolating diaphragm made from Al2O3 aluminum-oxide ceramic, (Ceraphire®), ultrapure
99.9 %
PTP31B:
• Housing made from 316L (1.4404)
• Process connections made from 316L (1.4404)
• Process isolating diaphragm made from 316L (1.4435)
Options
PTC31B:
• Certificate of calibration
• Cleaned from oil+grease
• Min. alarm current setting
• 3.1 Material certificates
• Cleaned for O2 service
• IO-Link
PTP31B:
• Certificate of calibration
• Cleaned from oil+grease
• Min. alarm current setting
• 3.1 Material certificates
• IO-Link
10 Endress+Hauser
Ceraphant PTC31B, PTP31B
A
B
C
D
E
D
E
Product design
Overview Item Description
A Valve plug
B Cable
C M12 plug
Housing cap made of plastic
A0022015
A0037236
A0037238
A0027226
D
Housing
E
Process connection (sample illustration)
System integration
A0027215
The device can be given a tag name (max. 32 alphanumeric characters).
Designation Option
Measuring point (TAG), see additional specifications Z1
1) Product Configurator order code for "Marking"
1)
For devices with IO-Link, an IO-DD is available in the Downloads area of the Endress+Hauser website
→ 40.
Endress+Hauser 11
Input
Measured variable Measured process variable
Gauge pressure or absolute pressure
Calculated process variable
Pressure
Measuring range Ceramic process isolating diaphragm
Ceraphant PTC31B, PTP31B
Sensor Device Maximum
Sensor measuring range
lower (LRL) upper (URL)
[bar (psi)] [bar (psi)] [bar (psi)] [bar (psi)] [bar (psi)]
Devices for gauge pressure measurement
100 mbar (1.5 psi)
250 mbar (4 psi)
400 mbar (6 psi)
1 bar (15 psi)
2 bar (30 psi)
4 bar (60 psi)
10 bar (150 psi)
40 bar (600 psi)
4)
PTC31B –0.1 (–1.5) +0.1 (+1.5) 0.02 (0.3) 2.7 (40.5) 4 (60) 0 to 100 mbar (0 to 1.5 psi) 1C
5)
PTC31B –0.25 (–4) +0.25 (+4) 0.05 (1) 3.3 (49.5) 5 (75) 0 to 250 mbar (0 to 4 psi) 1E
6)
PTC31B –0.4 (–6) +0.4 (+6) 0.08 (1.2) 5.3 (79.5) 8 (120) 0 to 400 mbar (0 to 6 psi) 1F
6)
6)
6)
PTC31B –1 (–15) +1 (+15) 0.2 (3) 6.7 (100.5) 10 (150) 0 to 1 bar (0 to 15 psi) 1H
PTC31B –1 (–15) +2 (+30) 0.4 (6) 12 (180) 18 (270) 0 to 2 bar (0 to 30 psi) 1K
PTC31B –1 (–15) +4 (+60) 0.8 (12) 16.7 (250.5) 25 (375) 0 to 4 bar (0 to 60 psi) 1M
6)
PTC31B –1 (–15) +10 (+150) 2 (30) 26.7 (400.5) 40 (600) 0 to 10 bar (0 to 150 psi) 1P
6)
PTC31B –1 (–15) +40 (+600) 8 (120) 40 (600) 60 (900) 0 to 40 bar (0 to 600 psi) 1S
Devices for absolute pressure measurement
100 mbar (1.5 psi)
250 mbar (4 psi)
400 mbar (6 psi)
1 bar (15 psi)
2 bar (30 psi)
4 bar (60 psi)
10 bar (150 psi)
40 bar (600 psi)
6)
PTC31B 0 +0.1 (+1.5) 0.1 (1.5) 2.7 (40.5) 4 (60) 0 to 100 mbar (0 to 1.5 psi) 2C
6)
PTC31B 0 +0.25 (+4) 0.25 (4) 3.3 (49.5) 5 (75) 0 to 250 mbar (0 to 4 psi) 2E
6)
PTC31B 0 +0.4 (+6) 0.4 (6) 5.3 (79.5) 8 (120) 0 to 400 mbar (0 to 6 psi) 2F
6)
6)
6)
PTC31B 0 +1 (+15) 0.4 (6) 6.7 (100.5) 10 (150) 0 to 1 bar (0 to 15 psi) 2H
PTC31B 0 +2 (+30) 0.4 (6) 12 (180) 18 (270) 0 to 2 bar (0 to 30 psi) 2K
PTC31B 0 +4 (+60) 0.8 (12) 16.7 (250.5) 25 (375) 0 to 4 bar (0 to 60 psi) 2M
6)
PTC31B 0 +10 (+150) 2 (30) 26.7 (400.5) 40 (600) 0 to 10 bar (0 to 150 psi) 2P
6)
PTC31B 0 +40 (+600) 8 (120) 40 (600) 60 (900) 0 to 40 bar (0 to 600 psi) 2S
Lowest
calibratable
1)
span
MWP OPL Factory settings
2)
Option
3)
1) Highest turn down that can be set at the factory: 5:1. The turn down is preset and cannot be changed.
2) Other measuring ranges (e.g. –1 to +5 bar (–15 to 75 psi)) can be ordered with customer-specific settings (see the Product Configurator, order
code for "Calibration; Unit" option "U"). It is possible to invert the output signal (LRV = 20 mA; URV = 4 mA). Prerequisite: URV < LRV
3) Product Configurator, order code for "Sensor range"
4) Vacuum resistance: 0.7 bar (10.5 psi) abs
5) Vacuum resistance: 0.5 bar (7.5 psi) abs
6) Vacuum resistance: 0 bar (0 psi) abs
Maximum turn down which can be ordered for absolute pressure and gauge pressure sensors
Devices for gauge pressure measurement
• 6 bar (90 psi), 16 bar (240 psi), 25 bar (375 psi): TD 1:1 to TD 2.5:1
• All other measuring ranges: TD 1:1 to TD 5:1
Devices for absolute pressure measurement
• 100 mbar (1.5 psi), 250 mbar (4 psi), 400 mbar (6 psi): TD 1:1
• 1 bar (15 psi): TD 1:1 to TD 2.5:1
• All other measuring ranges: TD 1:1 to TD 5:1
12 Endress+Hauser
Ceraphant PTC31B, PTP31B
Metal process isolating diaphragm
Sensor Device Maximum
Sensor measuring range
lower (LRL) upper (URL)
[bar (psi)] [bar (psi)] [bar (psi)] [bar (psi)] [bar (psi)]
Devices for gauge pressure measurement
400 mbar (6 psi)
1 bar (15 psi)
2 bar (30 psi)
4 bar (60 psi)
10 bar (150 psi)
40 bar (600 psi)
100 bar (1 500 psi)
400 bar (6 000 psi)
4)
PTP31B –0.4 (–6) +0.4 (+6) 0.4 (6) 1 (15) 1.6 (24) 0 to 400 mbar (0 to 6 psi) 1F
4)
4)
4)
PTP31B –1 (–15) +1 (+15) 0.4 (6) 2.7 (40.5) 4 (60) 0 to 1 bar (0 to 15 psi) 1H
PTP31B –1 (–15) +2 (+30) 0.4 (6) 6.7 (100.5) 10 (150) 0 to 2 bar (0 to 30 psi) 1K
PTP31B –1 (–15) +4 (+60) 0.8 (12) 10.7 (160.5) 16 (240) 0 to 4 bar (0 to 60 psi) 1M
4)
PTP31B –1 (–15) +10 (+150) 2 (30) 25 (375) 40 (600) 0 to 10 bar (0 to 150 psi) 1P
4)
PTP31B –1 (–15) +40 (+600) 8 (120) 100 (1500) 160 (2400) 0 to 40 bar (0 to 600 psi) 1S
4)
PTP31B –1 (–15) +100 (+1500) 20 (300) 100 (1500) 160 (2400) 0 to 100 bar (0 to 1 500 psi) 1U
4)
PTP31B –1 (–15) +400 (+6000) 80 (1200) 400 (6000) 600 (9000) 0 to 400 bar (0 to 6 000 psi) 1W
Devices for absolute pressure measurement
400 mbar (6 psi)
1 bar (15 psi)
2 bar (30 psi)
4 bar (60 psi)
10 bar (150 psi)
40 bar (600 psi)
100 bar (1 500 psi)
400 bar (6 000 psi)
4)
PTP31B 0 (0) 0.4 (+6) 0.4 (6) 1 (15) 1.6 (24) 0 to 400 mbar (0 to 6 psi) 2F
4)
4)
4)
PTP31B 0 (0) 1 (+15) 0.4 (6) 2.7 (40.5) 4 (60) 0 to 1 bar (0 to 15 psi) 2H
PTP31B 0 (0) 2 (+30) 0.4 (6) 6.7 (100.5) 10 (150) 0 to 2 bar (0 to 30 psi) 2K
PTP31B 0 (0) 4 (+60) 0.8 (12) 10.7 (160.5) 16 (240) 0 to 4 bar (0 to 60 psi) 2M
4)
PTP31B 0 (0) 10 (+150) 2 (30) 25 (375) 40 (600) 0 to 10 bar (0 to 150 psi) 2P
4)
PTP31B 0 (0) +40 (+600) 8 (120) 100 (1500) 160 (2400) 0 to 40 bar (0 to 600 psi) 2S
4)
PTP31B 0 (0) +100 (+1500) 20 (300) 100 (1500) 160 (2400) 0 to 100 bar (0 to 1 500 psi) 2U
4)
PTP31B 0 (0) +400 (+6000) 80 (1200) 400 (6000) 600 (9000) 0 to 400 bar (0 to 6 000 psi) 2W
Lowest
calibratable
1)
span
MWP OPL Factory settings
2)
Option
3)
1) Highest turn down that can be set at the factory: 5:1. The turn down is preset and cannot be changed.
2) Other measuring ranges (e.g. –1 to +5 bar (–15 to 75 psi)) can be ordered with customer-specific settings (see the Product Configurator, order
code for "Calibration; Unit" option "U"). It is possible to invert the output signal (LRV = 20 mA; URV = 4 mA). Prerequisite: URV < LRV
3) Product Configurator, order code for "Sensor range"
4) Vacuum resistance: 0.01 bar (0.145 psi) abs
Maximum turn down which can be ordered for absolute pressure and gauge pressure sensors
Ranges 0.5%/0.3%: TD 1:1 to TD 5:1
Endress+Hauser 13
Output
Ceraphant PTC31B, PTP31B
Output signal
Range of adjustment
Switching capacity
Designation Option
PNP switch output + 4 to 20 mA output (4-wire), IO-Link 7
PNP switch output (3-wire) 4
2 x PNP switch output (4-wire), IO-Link 8
1) Product Configurator, order code for "Output"
1)
• Switch output
Switch point (SP): 0.5 to 100 % in increments of 0.1% (min. 1 mbar * (0.015 psi)) of the upper
range limit (URL) switchback point (RSP): 0 to 99.5% in increments of 0.1% (min. 1 mbar * (0.015
psi)) of the upper range limit (URL)
Minimum distance between SP and RSP: 0.5 % URL
• Analog output (if available)
Lower range value (LRV) and upper range value (URV) can be set anywhere within the sensor
range (LRL - URL). Turn down for analog output up to 5:1 of upper sensor limit (URL).
• Factory setting (if no customer-specific setting is ordered):
Switch point SP1: 90 %; switchback point RP1: 10 %;
Switch point SP2: 95 %; switchback point RP2: 15 %;
Analog output: LRV 0 %; URV 100 %
* For measuring ranges with a negative gauge pressure up to 4 bar (60 psi), the increment when
setting the switch point is min. 10 mbar (0.15 psi)
• Switch state ON: Ia ≤ 250 mA; switch state OFF: Ia ≤1 mA
• Devices with IO-Link: Switch state ON
1)
: Ia ≤ 200 mA
2)
; switch state OFF: Ia ≤100 μA
• Switch cycles: >10,000,000
• Voltage drop PNP: ≤2 V
• Overload protection: Automatic load testing of switching current;
– Max. capacitive load: 14 μF at max. supply voltage (without resistive load)
– Devices with IO-Link: Max. capacitive load: 1 μF at max. supply voltage (without resistive load)
– Max. cycle duration: 0.5 s; min. ton: 4 ms
– Max. cycle duration: 0.5 s; min. ton: 40 μs
– Periodic disconnection from protective circuit in the event of overcurrent (f = 2 Hz) and "F804"
displayed
Signal range 4 to 20 mA
Load (for devices with analog output)
3.8 mA to 20.5 mA
In order to guarantee sufficient terminal voltage, a maximum load resistance RL (including line
resistance) must not be exceeded depending on the supply voltage UB of the supply unit.
The maximum load resistance depends on the terminal voltage and is calculated according to the
following formula:
1) 100 mA can be guaranteed over the entire temperature range for the switch outputs "2 x PNP" and "1 x PNP + 4 to 20 mA output". For lower
ambient temperatures, higher currents are possible but cannot be guaranteed. Typical value at 20 °C (68 °F) approx. 200 mA. 200 mA can be
guaranteed over the entire temperature range for the "1 x PNP" current output.
2) Larger currents are supported, thus deviating from the IO-Link standard.
14 Endress+Hauser
Ceraphant PTC31B, PTP31B
[ ]W
20 30
10
0
1022
587
152
U
[V]
1
2
R
R
L
L
max
max
£
-U 6.5V
23mA
B
B
I
63 %
100 %
t
t1t
2
90 %
t
3
1 Power supply 10 to 30 V DC
2 R
UBSupply voltage
maximum load resistance
Lmax
If load is too great:
• failure current is output and "S803" displayed (output: MIN alarm current)
• Periodic checking to establish if it is possible to quit fault state
• In order to guarantee sufficient terminal voltage, a maximum load resistance RL (including line
resistance) must not be exceeded depending on the supply voltage UB of the supply unit.
A0031107
Signal on alarm 4 to 20 mA
Dead time, time constant
The response of the output to error is regulated in accordance with NAMUR NE43.
The behavior of the current output in the event of faults is defined in the following parameters:
• Alarm current FCU "MIN": Lower alarm current (≤3.6 mA) (optional, see the following table)
• Alarm current FCU "MAX" (factory setting): Upper alarm current (≥21 mA)
• Alarm current FCU "HLD" (HOLD) (optional, see the following table): Last measured current value
is held. When the device starts, the current output is set to "Lower alarm current" (≤3.6 mA).
alarm current
Device Description Option
PTC31B
PTP31B
PTC31B
PTP31B
1) Product Configurator order code for "Service"
2) Product Configurator order code for "Calibration/unit"
Adjusted min. alarm current IA
1 low ≤3.6 mA
2 high ≥21 mA
3 last current value
1)
2)
U
Presentation of the dead time and the time constant:
A0019786
Dynamic behavior
Endress+Hauser 15
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