Technical Data
ComparePressure
| Measuring Principle | Pressure switch |
| Characteristic | Intelligent pressure switch with metal diaphragm for hygienic applications, longterm stable |
| Supply voltage | 10....30 VDC |
| Reference Accuracy | 0.5 %, Platinum: 0.3 % |
| Long term stability | 0.2 % of URL/year |
| Process temperature | -40 °C...+100 °C (-40 °C...+212 °F) |
| Ambient temperature | -20 °C...+70 °C (-4 °F...+158 °F) |
| Measuring cell | +400 mbar....+40 bar (+6 psi....+600 psi) |
| Max. overpressure limit | 160 bar (2320 psi) |
| Process connection | Thread: M24 |
| Process connection hygienic | DIN11851, Tri Clamp, SMS, Varivent |
| Communication | 1x PNP switch 2x PNP switch 1x PNP switch + 4...20 mA analogue |
| Design approvals | EN 10204-3.1 final inspection report, Cleaned from oil and grease, Set min alarm |
| Hygienic approvals | FDA concurring 3A, EHEDG, EG1935/2004 |
| Specialities | Digital display, Fully welded process connections |
The PTP33B is a pressure switch for hygienic applications. For non-hygienic applications, use the metal diaphragm pressure switch PTP31B, and for ceramic diaphragms use PTC31B.
The Ceraphant PTP33B is a highly cost-effective pressure switch with a metal diaphragm sensor for safe absolute and gauge pressure monitoring. The compact pressure switch has high stability and strong overload resistance. The stainless steel PTP33B has 3-A and EHEDG approvals.
Advantages
Integrated electronic switch module for monitoring and control in discrete and process industries
Function check and on-site information display via LED indicator and digital display
Compact pressure transmitter that meets hygienic application requirements
Resistant to CIP/SIP cleaning
Small, flush-mounted hygienic process connection with 3-A and EHEDG approvals
Application areas
Pressure switch for absolute and gauge pressure monitoring of gases, steam, liquids or dust.
Process connection: hygienic connection, threaded connection
Process temperature: -10...+100°C (+14...+212°F) (+135°C (275°F): for 1 hour)
Process pressure: 400 mbar...+40 bar (6...+600 psi)
Measuring accuracy: max. ±0.3%
Spare Parts & Accessories 44
44 spare parts · click to collapse
| Order code | Description | |
|---|---|---|
| 71336104 | Hirschmann connector M164-pole. Consists of: plug connector, srew, seal. Usage: PTC31B, PTP31B/PTP33B. | Details |
| 71336105 | Hirschmann connector NPTF1/24-pole. Consists of: plug connector, srew, seal. Usage: PTC31B, PTP31B/PTP33B. | Details |
| 71337274 | O-ringConsisting of: 5x O-ring 15,54x2,62 FKM,FDA. Usage: FMP53, FMR43, FMR63B, PMP23, PTP33B, QMW43. | Details |
| 52010285 | M12 connector, 90° angled, with 5 m cable适用于M12插头 带5m电缆 PVC材质，铜镀锡/ 镍锁紧螺母 | Details |
| 52006263 | Process connection | Socket for plug 4p-125V, 4A-M12M12 插头 自连接 M12转成格兰 | Details |
| 52005087 | welded socket, G1齐平式安装 材质: 316L. 可用于: PMP23, PMP51, PMP135, PTP33B/PTP35. 建议焊接时使用堵头 | Details |
| 52010171 | Weld socket, G1, 3.1 material certificateFlush mount process connection PMP135 "M", PTP35 "BA", PMP45 "CD" Material: 316L Inspection cert. EN10204-3.1 material Correct installation only with dummy | Details |
| 52001051 | Process connection | Weld-in G1, d=60, 316L齐平安装式过程连接 FTL260 "0", FTL20 "7", FTL20H "GEJ", FTL330H/FTL330L "G", FTL50/FTL51, FTL50H/FTL51H "GW2", FMI51/FMI52, FTI51/FTI52 "GWJ", PMP135 "N", PTP35 "BB" 材质: 316L 密封: 硅橡胶 O-ring | Details |
| 52011896 | Welding socket, G1, d=60, 3.1 material certificateFlush mount process connection FTL260 "0", FTL20H "GEJ", FTL50/FTL51, FTL50H/FTL51H "GW2", FMI51/FMI52, FTI51/FTI52 "GWJ", PMP135 "N", PTP35 "BB" Material: 316L Seal: Silicone O-ring Inspection cert. EN10204-3.1 material (316L wetted parts) | Details |
| 71258358 | Weld socket G1, d=53, 316LFlush mount process connection. Material: 316L. Seal: silicone O-ring. FDA, 3-A compliant. Additional EPDM O-ring. FDA, EHEDG, 3-A, USP Class VI compliant. Usage: FMI51, FMI52, FTI51, FTI52, FTL31, FTL33, FTL41, FTL43, FTL50, FTL50H, FTL51, FTL51H, FTL51B, FTL63, FTL80, FTL81, FTL260, FTL330H, FTL330L, PTP35, PTP33B, PMP23, PMP43, PMP51, FTW23, FTW33, QMW43. | Details |
| 52005272 | Weld boss protection plugto avoid any deformation of nozzle 52005087 / 52010171 during welding | Details |
| 71675410 | Welding protective plug for weld-on connector; G1; brass materialWelding dummy for welding the weld-in adapter G1 71258358/71093129, 52001051/52011896. Material: Brass. Usage: FMI51, FMI52, FTI51, FTI52, FTL31, FTL33, FTL41, FTL43, FTL51B, FTL60, FTL63, FTL80, FTL81, FTW23, FTW33, PTP33B, PMP23, PMP43, TMR35, TM311, TM371, TM372, TM411, TT411. | Details |
| 71675413 | welding boss blind plugBlind plug with inspection certificate EN10204-3.1. for closing weld-in adapter G1 71258358/71093129, 52001051/52011896. Material: AISI 316L (1.4435). Roughness (process side): Ra < 0.76 μm (29.9 μin). Silicone O-ring. Usage: FMI51, FMI52, FTI51, FTI52, FTL31, FTL33, FTL41, FTL43, FTL51B, FTL60, FTL63, FTL80, FTL81, FTW23, FTW33, PTP33B, PMP23, PMP43, TMR35, TM311, TM371, TM372, TM411, TT411. | Details |
| 71041381 | Welded boss M24 D65Flush mount process connection. Core hole: 65mm. Material: 316L. Seal: EPDM O-ring FDA, EHEDG, 3-A compliant. Usage: FMP53, FTL33, FTW23, FTW33, PMP23, PTP33B, QMW43. | Details |
| 71041383 | Welding boss M24 D65, 3.1 material certificateFlush mount process connection. Core hole: 65mm. Material: 316L. Inspection cert. EN10204-3.1 material. Seal: EPDM O-ring. FDA, EHEDG, 3-A compliant. Usage: FMP53, FTL33, FTW23, FTW33, PMP23, PTP33B, QMW43. | Details |
| 71580894 | UNI D65/85 blind plug welding adapterConsists of: Blind plug, 316L. Groove nut, 1.4301/304. Form seal silicon. Usage: PMP23, PTP33B, PMC51, PMP55, FMB50, FMB70, FMD71. | Details |
| 52014472 | O-ringfor weld-in adapter G1 (52001051) Liquiphant M "GW2" Liquiphant T "7", Liquicap M "GWJ", Cerabar T PMP135 "N", Ceraphant T PTP35 "BB" for weld-in andapter G1, 316L 3.1 (52011896) Liquiphant M "GW2", Cerabar T PMP135 "N", Ceraphant T PTP35 "BB" for sliding sleeve Soliphant T | Details |
| 71086102 | O-ringMaterial: silicone VMQ. USP Class VI. Usage: weld-in adapter G1, 316L, (52001051) flush mount, FMI51/FMI52, FTI51/FTI52, FTL31/FTL33, FTW23/FTW33, PMP23, PMP43, PMP51, PTP33B, FTL50/FTL50H/FTL51/FTL51H, FTL80/FTL81, QMW43, Weld-in adapter G1, 316L, 3.1, (52011896) flush mount, FMI51/FMI52, FTI51/FTI52, FTL31/FTL33, FTW23/FTW33, PMP23, PMP43, PMP51, PTP33B, FTL50/FTL50H/FTL51/FTL51H, FTL80/FTL81,QMW43, sliding sleeve FTM21. | Details |
| 71140668 | O-ringMaterial: EPDM 70. USP Class VI, 3-A. Usage: weld-in adapter G1, 316L, (52001051) flush mount, FMI51, FMI52, FTI51, FTI52, FTL31, FTL33, FTL43, FTW23, FTW33, PMP23, PMP51, PTP33B, FTL50, FTL50H, FTL51, FTL51H, FTL80, FTL81, PMP43, QMW43, Weld-in adapter G1, 316L, 3.1, (52011896) flush mounted, FMI51, FMI52, FTI51, FTI52, FTL31, FTL33, FTW23, FTW33, PMP23, PMP51, PTP33B, FTL50, FTL50H, FTL51, FTL51H, FTL80, FTL81, PMP43, QMW43, sliding sleeve FTM21. | Details |
| 52023994 | Process adapter M24 - Clamp 1 1/2"Exchange process connection Ceraphant T M24 female, O-ring 15,54x2,62mm, 316L | Details |
Configurator / Comparison
Accessories / Spare parts
Source:Endress+Hauserpublic information from the website
Measuring principle video
Click to playManuals & Documents 8
All documents for this model8 documents · click to expand
BA Ceraphant PTC31B, PTP31B, PTP33B Chinese
BA Ceraphant PTC31B, PTP31B, PTP33B IO-Link Chinese
BA Ceraphant PTC31B, PTP31B, PTP33B English
BA Ceraphant PTC31B, PTP31B, PTP33B IO-Link English
TI 焊接接头、过程转接头和法兰 Chinese
TI Ceraphant PTP33B Chinese
TI Weld-in adapter, process adapter and flanges English
TI Ceraphant PTP33B English
Case Studies
Municipal Wastewater Treatment · Gauge and Absolute Pressure — Application Case
Site Conditions
This is a Municipal Wastewater Treatment customer whose plant is at the inlet, biological and outlet stages of a municipal plant. The main task was measuring gauge or absolute pressure to judge process state.
The Problem
The difficulty lies in high solids and corrosive fractions, with large diurnal flow swings; at the same time effluent parameters drift and probes foul with sludge and biofilm. Specification therefore means selected by turndown, overpressure protection and diaphragm material.
What We Did
We took a pressure range approach — pressure solution matched to process pressure and temperature. Delivery was built around selected by turndown, overpressure protection and diaphragm material, with point-by-point checks on: stable compliance with Grade 1A discharge limits and online data reporting.
Operating Outcome
In service the system performs as intended — spotting abnormal pressure early, before equipment is damaged, with routine maintenance falling noticeably.
Food & Beverage · Gauge and Absolute Pressure — Application Case
Application Context
dosing, pasteurising, filling and CIP stages is a typical Food & Beverage duty. The project started from Gauge and Absolute Pressure, focusing on measuring gauge or absolute pressure to judge process state.
Process Constraints
frequent cleaning demands instruments that withstand hot CIP/SIP caustic cycles, and syrups, dairy and beverages that scale easily, under strict hygienic requirements only amplify it. The Gauge and Absolute Pressure specification must therefore cover selected by turndown, overpressure protection and diaphragm material.
Delivery Approach
Delivery was handled as the pressure range — pressure solution matched to process pressure and temperature. Execution centred on selected by turndown, overpressure protection and diaphragm material, together with food-safety and hygienic design per 3-A / EHEDG.
Field Results
Operation shows the benefit clearly — spotting abnormal pressure early, before equipment is damaged, with confidence in this measuring point improving markedly.
Chemical & Pharmaceutical · Gauge and Absolute Pressure — Application Case
Customer Profile
The typical setting in Chemical & Pharmaceutical is reactors, metering vessels and finished-product tanks. The measuring point is Gauge and Absolute Pressure; the focus is measuring gauge or absolute pressure to judge process state.
Key Difficulties
Conditions are highly corrosive media with solvents and crystallisation, partly in explosive atmospheres and, on top of that, corrosion plus Ex protection shortens instrument life and makes downtime costly, which a standard configuration cannot handle for long. The design therefore starts with selected by turndown, overpressure protection and diaphragm material.
Implementation
The scope ran through the pressure range: pressure solution matched to process pressure and temperature. Technically it hinges on selected by turndown, overpressure protection and diaphragm material, and on these requirements: Ex certification and GMP traceability of records.
Customer Benefit
In practice this means spotting abnormal pressure early, before equipment is damaged, which cut the workload on the site maintenance team.
Power & Energy · Gauge and Absolute Pressure — Application Case
Project Background
The project covers boiler feedwater, turbine condensate and FGD/DeNOx systems. The work centres on Gauge and Absolute Pressure and the core task is measuring gauge or absolute pressure to judge process state.
Operating Challenges
The medium and duty are characterised by high temperature and pressure with both steam and saline water, and drift under high temperature and pressure, with very costly unplanned outages. So Gauge and Absolute Pressure cannot be specified generically — it calls for selected by turndown, overpressure protection and diaphragm material.
Solution
The Ainstru engineering team worked through the pressure range: pressure solution matched to process pressure and temperature. The configuration involves selected by turndown, overpressure protection and diaphragm material, with these requirements in view: compliance with power-industry codes and unit availability targets.
Results
Since start-up the system has run steadily; the practical result is spotting abnormal pressure early, before equipment is damaged.
