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 for applications with hygienic
requirements. 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 40 bar (600 psi)
• Housing and process isolating diaphragm made of 316L
• Fully-welded process connections
• Suitable for CIP/SIP cleaning
• Optionally available with IO-Link
Operation and electrical connection in accordance with VDMA 24574-1:2008
Table of contents
Ceraphant PTP33B
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
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 usedSafety symbols
SymbolMeaning
Electrical symbols
SymbolMeaningSymbolMeaning
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
SymbolMeaning
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
SymbolMeaning
1, 2, 3 ...Item numbers
Series of steps
A, B, C, ...Views
4Endress+Hauser
Ceraphant PTP33B
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+Hauser5
Terms and abbreviations
URLOPLMWP
LRL
0
p
LRV
URV
1
2
3
4
Ceraphant PTP33B
A0029505
Item Term/
abbreviation
1OPLThe OPL (over pressure limit = sensor overload limit) for the measuring device
2MWPThe MWP (maximum working pressure) for the sensors depends on the lowest-
3Maximum sensor
measuring range
4Calibrated/adjusted
span
p-Pressure
-LRLLower range limit
-URLUpper range limit
-LRVLower range value
-URVUpper 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
→ 23 .
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 → 23 .
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.
• 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+Hauser7
Function and system design
p
1
3
4
2
1
2
3
Ceraphant PTP33B
Measuring principle process pressure
measurement
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
1Silicon measuring element, substrate
2Wheatstone bridge
3Channel with fill fluid
4Metal process isolating diaphragm
PTP33B: Gauge and absolute pressure and hygienic applications
Process connections
PTP33B:
• Thread ISO 228
• Thread M24 x 1.5
• SMS
• Varivent
• Clamp/Tri-Clamp
• DIN 11851
A0021924
Measuring ranges
PTP33B: from 0 to +400 mbar (0 to +6 psi) to 0 to +40 bar (0 to +600 psi).
OPL (depends on the measuring range)
PTP33B: max. 0 to +160 bar (0 to +2400 psi)
8Endress+Hauser
Ceraphant PTP33B
MWP
PTP33B: max. 0 to +100 bar (0 to +1500 psi)
Process temperature range (temperature at process connection)
PTP33B: –10 to +100 °C (+14 to +212 °F)
(+135 °C (+275 °F) for one hour maximum)
Ambient temperature range
PTP33B: –40 to +70 °C (–40 to +158 °F)(in the range of the temperature limits with restrictions in
optical properties, such as display speed and contrast)
Reference accuracy
PTP33B: standard: up to 0.5 %; platinum: up to 0.3 %
Supply voltage
PTP33B: 10 to 30 V DC at a DC power unit
PTP33B 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))
PTP33B:
• 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
PTP33B:
• Housing made from 316L (1.4404)
• Process connections made from 316L (1.4435)
• Process isolating diaphragm made from 316L (1.4435)
Options
PTP33B:
• 3.1 Material certificates
• EHEDG/3A approvals
• Certificate of calibration
• Weld-in adapter
• Min. alarm current setting
• IO-Link
Endress+Hauser9
Ceraphant PTP33B
A
B
C
D
E
Product design
OverviewItem Description
AValve plug
BCable
CM12 plug
Housing cap made of plastic
A0037236
A0037238
A0027227
D
Housing
E
Process connection (sample illustration)
System integration
A0022015
The device can be given a tag name (max. 32 alphanumeric characters).
DesignationOption
1)
Measuring point (TAG), see additional specificationsZ1
1)Product Configurator order code for "Marking"
For devices with IO-Link, an IO-DD is available in the Downloads area of the Endress+Hauser website
→ 32.
PTP33B –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)
PTP33B –1 (–15)+1 (+15)0.4 (6)2.7 (40.5)4 (60)0 to 1 bar (0 to 15 psi)1H
PTP33B –1 (–15)+2 (+30)0.4 (6)6.7 (100.5)10 (150)0 to 2 bar (0 to 30 psi)1K
PTP33B –1 (–15)+4 (+60)0.8 (12)10.7 (160.5)16 (240)0 to 4 bar (0 to 60 psi)1M
4)
PTP33B –1 (–15)+10 (+150)2 (30)25 (375)40 (600)0 to 10 bar (0 to 150 psi)1P
4)
PTP33B –1 (–15)+40 (+600)8 (120)100 (1500)160 (2400) 0 to 40 bar (0 to 600 psi)1S
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)
4)
PTP33B 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)
PTP33B 0 (0)1 (+15)0.4 (6)2.7 (40.5)4 (60)0 to 1 bar (0 to 15 psi)2H
PTP33B 0 (0)2 (+30)0.4 (6)6.7 (100.5)10 (150)0 to 2 bar (0 to 30 psi)2K
PTP33B 0 (0)4 (+60)0.8 (12)10.7 (160.5)16 (240)0 to 4 bar (0 to 60 psi)2M
4)
PTP33B 0 (0)10 (+150)2 (30)25 (375)40 (600)0 to 10 bar (0 to 150 psi)2P
4)
PTP33B 0 (0)+40 (+600)8 (120)100 (1500)160 (2400) 0 to 40 bar (0 to 600 psi)2S
Lowest
calibratable
1)
span
MWPOPLFactory 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+Hauser11
Output
Ceraphant PTP33B
Output signal
Range of adjustment
Switching capacity
DesignationOption
PNP switch output + 4 to 20 mA output (4-wire), IO-Link7
PNP switch output (3-wire)4
2 x PNP switch output (4-wire), IO-Link8
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.
12Endress+Hauser
Ceraphant PTP33B
[ ]W
2030
10
0
1022
587
152
U
[V]
1
2
R
R
L
L
max
max
£
-U6.5V
23mA
B
B
I
63 %
100 %
t
t1t
2
90 %
t
3
1Power supply 10 to 30 V DC
2R
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
DeviceDescriptionOption
PTP33BAdjusted min. alarm currentIA
PTP33B1 low ≤3.6 mA
2 high ≥21 mA
3 last current value
1)Product Configurator order code for "Service"
2)Product Configurator order code for "Calibration/unit"
1)
2)
U
Presentation of the dead time and the time constant:
A0019786
Dynamic behavior
Endress+Hauser13
Ceraphant PTP33B
Analog electronics
Dead time (t1) [ms]Time constant (T63), t2 [ms]Time constant (T90), t3 [ms]
7 ms11 ms16 ms
Dynamic behavior of switch
output
Damping
PNP switch output and 2 x PNP switch output: response time ≤20 ms
Once the supply voltage has been applied, damping for the first measured value is at 0 i.e. the first
measured value applied always corresponds to the actual measured value (regardless of damping).
A damping affects all outputs (output signal, display):
• Via local display, infinitely variable 0 to 999.9 s
• Factory setting: 2.0 s
14Endress+Hauser
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