CUM253 Turbidity Transmitter Spare Parts Overview
The CUM253 turbidity transmitter is a key instrument in industrial process measurement, and its spare parts management directly affects equipment maintenance efficiency and operational stability. This article compiles a list of commonly used spare parts for the CUM253 and its companion CXM253 series transmitters, covering panels, power supplies, relay modules, and upgrade kits for reference by engineering technicians and procurement personnel.

CXM253 Transmitter Spare Parts List
The following spare parts are suitable for the CXM253 series transmitters, including instrument panels, mounting components, and cables. Please select the corresponding order number based on the equipment model and specific requirements.
| Order Number | Specification Description | Applicable Model |
|---|---|---|
| 51501068 | KIT CXM253 instrument panel (including front foil and 6 key boosters) | CXM253 |
| 51501073 | CXM253 internal mounting components | CXM253 |
| 51501072 | CXM253 mounting base plate | CXM253 |
| 51501069 | Mounting hinge kit | CXM253 |
| 51501079 | CXM253 terminal block power supply | CXM253 |
| 51501074 | CXM253 flat cable | CXM253 |
Power Modules
- 51500317: CXM2X3 AC power kit
- 51500318: CXM2X3 DC power kit
Mounting Accessories
- 50086842: LIQUISYS transmitter column mounting part, suitable for horizontal or vertical pipes (maximum diameter 60mm), material is stainless steel V2A.
Relay and Upgrade Modules
Relay modules are used to expand the output functions of the transmitter, supporting Profibus DP communication and current input. Upgrade modules can enhance the functions of the LIQUISYS-M basic version.
| Order Number | Specification Description | Remarks |
|---|---|---|
| 71134732 | Relay module Profibus DP (including 1 relay module, 2 relays, 1 current input DP connection) | Suitable for H/W 2.10 and above |
| 51511446 | Relay module (2 passive changeover contacts) | LIQUISYS-M upgrade |
| 51500321 | Relay output circuit board (4 passive changeover contacts) | LIQUISYS-M upgrade |
| 51511447 | Relay module | LIQUISYS-M upgrade |
| 51504304 | Relay output module (2 contacts + 4-20mA current input) | LIQUISYS-M upgrade |
| 51504305 | Relay output module (4 contacts + 4-20mA current input) | LIQUISYS-M upgrade |
Software Upgrade Packages
- 51500385: "Extended software" upgrade package, upgrading LIQUISYS-M basic version to S version (plus package), supporting parameters such as pH, conductivity, temperature, residual chlorine, oxygen (WX to WS). Instrument serial number required.
- 51500963: "Cleaning function" upgrade package, adding Chemoclean cleaning function. Instrument serial number required. If the 4-relay board is not installed, order 51500321 separately.
Selection and Procurement Recommendations
- Confirm the transmitter model and hardware version to ensure spare parts compatibility.
- Select relay modules or upgrade packages according to functional requirements.
- Be sure to provide the instrument serial number when ordering upgrade packages.
- For cleaning function upgrades, check whether the 4-relay board is already installed.
Proper selection of spare parts can effectively extend the service life of the CUM253 turbidity transmitter and reduce downtime. It is recommended to regularly check the inventory of key spare parts and maintain communication with suppliers.