Project Location: Tanzania, East Africa
Product: Endress+Hauser Ceraphant PTP33B Pressure Switch
Model: PTP33B-66R4/0
Extended Order Code: PTP33B-AA4U1MGBWSJ+QJ
Quantity: 2 Units
Project Type: Discontinued Pressure Instrument Replacement
Supplier: Dalian Zero Instrument Technology Co., Ltd.
1. Project Background
An industrial instrumentation customer in Tanzania required two Endress+Hauser pressure instruments to replace an older model that was no longer available for ordering.
The original requested model was PTP35-A2A17M1BBBA, an Endress+Hauser pressure instrument used for process pressure monitoring and switching applications.
Since the original model had been discontinued, the customer needed a suitable replacement from the current Endress+Hauser product range.
Zero Instrument assisted with replacement model identification, procurement coordination, and product verification before shipment.
2. Customer Requirements
The customer’s main requirements included:
Replacement of the discontinued Endress+Hauser PTP35 model
Original Endress+Hauser equipment
Reliable pressure monitoring and switching
Compatibility with the intended process conditions
Correct electrical and mechanical configuration
Supply of two identical instruments
Product identification and documentation before delivery
For replacement projects involving pressure switches, matching the pressure range alone is not sufficient.
The process connection, electrical output, power supply, and switching configuration must also be reviewed to ensure compatibility with the existing installation.
3. Replacement Model Selection
After reviewing the original model and available replacement options, the following instrument was selected.
Original Model: PTP35-A2A17M1BBBA
Status: Discontinued
Replacement Product: Endress+Hauser Ceraphant PTP33B
Order Code: PTP33B-66R4/0
Extended Order Code: PTP33B-AA4U1MGBWSJ+QJ
Quantity: 2 pcs
The Ceraphant PTP33B is a compact electronic pressure switch designed for pressure monitoring and switching in industrial process applications.
The selected replacement provides a current product platform for the customer’s equipment procurement requirements.
4. Technical Specifications
The supplied instruments were identified and checked using their product nameplates.
| Parameter | Specification |
|---|---|
| Manufacturer | Endress+Hauser |
| Product Series | Ceraphant PTP33B |
| Order Code | PTP33B-66R4/0 |
| Extended Order Code | PTP33B-AA4U1MGBWSJ+QJ |
| Pressure Range | -1 to 4 bar |
| Power Supply | 10–30 VDC |
| Switching Output | PNP |
| Local Display | Integrated digital display |
| Quantity | 2 units |
| Country of Manufacture | China |
The instrument features a stainless-steel process connection assembly and a compact electronic housing with an integrated display and operating buttons.
Its electronic switching output allows the device to be used in compatible industrial control applications.
5. Key Product Features
Compact Electronic Pressure Switch
The Ceraphant PTP33B combines pressure sensing, local indication, and electronic switching functions in a compact instrument.
This design is suitable for applications where pressure conditions need to be monitored locally and communicated to a control system.
Integrated Digital Display
The instrument includes a local display and operating buttons, allowing personnel to view pressure information and access device configuration functions.
PNP Switching Output
The supplied configuration features a PNP switching output for connection to compatible control equipment.
Electrical compatibility should be checked against the existing PLC or control system before installation.
Industrial Process Connection
The instrument uses a stainless-steel process connection assembly intended for industrial process installation.
The exact process connection and sealing requirements must be checked against the customer’s existing installation.
6. Procurement and Order Coordination
Zero Instrument supported the procurement process from model confirmation through product completion.
The work included:
Reviewing the discontinued PTP35 model
Identifying the PTP33B replacement configuration
Confirming the required quantity
Preparing the commercial quotation
Coordinating procurement with Endress+Hauser
Following up on order completion
Checking the received instruments against their nameplates
Preparing the equipment and accessories for shipment
The order was completed for two units of the same configuration.
7. Product Verification and Packaging
Upon completion, actual photographs were obtained showing the supplied Endress+Hauser instruments and their accompanying accessories.
The photographs confirmed:
Endress+Hauser Ceraphant PTP33B identification
Correct order code and extended order code
Integrated local display
Stainless-steel instrument body
PNP output configuration
Included electrical connection accessories
Product documentation and quality-related paperwork
Each instrument was supplied with its individual serial number, supporting product identification and traceability.
The equipment was prepared for delivery after the product information was checked against the order.
8. Project Outcome
The procurement stage was successfully completed, with two Endress+Hauser Ceraphant PTP33B pressure switches supplied in the requested configuration.
The project provided the customer with a current Endress+Hauser product option for replacing the discontinued PTP35 model.
By coordinating replacement identification, ordering, and product verification, Zero Instrument helped simplify the customer’s international procurement process.
The documented outcome covers product supply and delivery preparation. Final installation and operational performance have not yet been independently verified.
9. Engineering Considerations for PTP35 Replacement
When replacing an older Endress+Hauser pressure switch with a PTP33B, several parameters should be checked carefully:
Pressure range: Confirm that the replacement covers the required operating and switching pressures.
Electrical output: Verify the PNP switching output and its compatibility with the existing control system.
Power supply: Confirm that the available DC power supply meets the instrument requirements.
Process connection: Check thread or hygienic connection dimensions, sealing arrangement, and mechanical installation requirements.
Switching configuration: Verify switching points, reset points, and output behavior during commissioning.
Process conditions: Confirm pressure, temperature, and media compatibility for the selected configuration.
These checks are important because a newer product model should not automatically be assumed to be a direct mechanical or electrical replacement without configuration verification.
10. Conclusion
This project demonstrates Zero Instrument’s ability to support customers requiring replacement solutions for discontinued Endress+Hauser process instrumentation.
Through careful model identification, procurement coordination, and product verification, two Ceraphant PTP33B pressure switches were successfully prepared for the customer’s industrial instrumentation requirements in Tanzania.
For customers maintaining older Endress+Hauser pressure instruments, providing the original order code and nameplate information is an effective starting point for identifying suitable replacement options.
Need an Endress+Hauser Pressure Switch Replacement?
If your existing Endress+Hauser pressure switch has been discontinued, Zero Instrument can assist with model identification, replacement selection, technical confirmation, and international procurement.
Send us your original model number, extended order code, or instrument nameplate photographs for review.