CPM253 pH Transmitter Spare Parts Overview
The CPM253 pH transmitter is a core instrument in industrial process analysis, and its spare parts management directly affects measurement continuity and maintenance efficiency. This article compiles a complete spare parts list, including order numbers, specification descriptions, and applicable positions, for quick reference by engineering technicians and procurement personnel. All spare parts are suitable for the CPM253 and compatible series transmitters.
Housing and Mechanical Installation Spare Parts
Housing and installation accessories are the foundation for ensuring the transmitter's protection rating and stable on-site installation. The following spare parts cover the front panel, rear cover, hinges, and mounting base plate, etc.
Front Panel and Housing Components
- Order No. 51501068: KIT CXM253 instrument panel (including front panel and housing cover)
- Order No. 71071446: Kit CXM253 front panel membrane + 6 key lifters
- Order No. 51501073: CXM253 internal housing parts (KIT CXM253 Internal housing parts)
- Order No. 51502184: Transmitter connection head
Installation and Grounding Accessories
- Order No. 51501072: CXM253 mounting base plate (KIT CXM253 bottom of housing)
- Order No. 51501069: Mounting hinges (KIT hinges)
- Order No. 51501087: CXM253 ground terminal strip (KIT CXM253 Ground terminal strip)
- Order No. 50086842: LIQUISYS transmitter column mounting kit, suitable for horizontal or vertical pipes (max diameter 60mm), material stainless steel V2A
Electrical Connection and Cable Spare Parts
Electrical connection spare parts ensure reliable transmission of signals and power. The following includes ribbon cables, terminal blocks, and power modules.
Cables and Terminal Blocks
- Order No. 51501074: CXM253 ribbon cables (KIT CXM253 Ribbon cables)
- Order No. 51501079: CXM223 terminal strip power supply (KIT CXM253 terminal strip power supply)
Power Modules
- Order No. 51500317: CXM2X3 AC power supply (KIT CXM2X3 power supply AC)
- Order No. 51500318: CXM2X3 DC power supply (KIT CxM2x3 power supply DC)
Mainboard and Communication Modules
The mainboard is the core processing unit of the transmitter, and different communication protocols require corresponding models. The following lists the CPM2X3 series mainboards and their features.
CPM2X3 Mainboard Selection
| Order No. | Specification Description | Communication Protocol |
|---|---|---|
| 51501081 | KIT CPM2X3 Central module I1 | Basic |
| 51501083 | KIT CPM2x3 central module I1 HART | HART |
| 51501082 | KIT CPM2x3 Central modul I2 | Basic |
| 51501084 | KIT CPM2x3 central module I2 HART | HART |
| 51501085 | KIT CPM2X3 central module Profibus PA | Profibus PA |
| 51502503 | Kit CPM2X3 central module Profibus DP | Profibus DP |
| 71134724 | CPM2X3 mainboard (LSCP-DP, qualified from H/W 2.10) | Profibus DP |
Note: 71134724 includes 1 Profibus DP central module, module name LSCP-DP, requires hardware version 2.10 or above.
Relay and Output Modules
Relay modules are used to expand the transmitter's digital output capability, suitable for alarm, control, and other scenarios. The following spare parts can be ordered separately or as upgrade kits.
Relay Modules and Upgrade Packages
- Order No. 71134732: Relay module Profibus DP, including 2 relays, 1 current input DP connection, qualified from H/W 2.10
- Order No. 51500320: Relay output module, adds 2 passive changeover contacts to LIQUISYS-M basic version
- Order No. 51511446: Relay module, adds 2 passive changeover contacts to LIQUISYS-M basic version
- Order No. 51500321: Relay output circuit board, adds 4 passive changeover contacts to LIQUISYS-M basic version
- Order No. 51511447: Relay module (same function as 51500321)
- Order No. 51504304: Relay output module, adds 2 contacts and 4-20mA current input to LIQUISYS-M basic version
- Order No. 51504305: Relay output module, adds 4 contacts and 4-20mA current input to LIQUISYS-M basic version
Input Modules and Sensor Interfaces
Input modules for pH, ORP, and other sensors ensure accurate signal acquisition. The following spare parts are suitable for MKP2 and transmitter modules.
- Order No. 51507096: MKP2 accessory kit, pH input module MEK
- Order No. 51518244: Transmitter module for pH glass electrodes and ORP sensors
- Order No. 51514966: Universal digital transmission spare part
Terminal Blocks and Display Board
Terminal blocks and display boards are key components for on-site wiring and local display.
- Order No. 51501071: CPM253 pH/mV terminal with display board (KIT CPM253 pH/mV terminal+screen plate)
Software and Function Upgrade Packages
Upgrade packages can expand transmitter functions to meet more complex application requirements. Upgrades usually require the instrument serial number.
Extended Software Upgrade Package
- Order No. 51500385: Extended software upgrade package, upgrades LIQUISYS-M basic version to S version (plus-package), supports parameters pH, conductivity, temperature, chlorine, oxygen (WX to WS). Instrument serial number required.
Cleaning Function Upgrade Package
- Order No. 51500963: Cleaning function upgrade package, adds Chemoclean cleaning function to LIQUISYS-M basic version. Instrument serial number required. If the 4-relay board is not yet installed, order 51500321 separately.
Spare Parts Selection Notes
When purchasing spare parts, be sure to verify the transmitter model, hardware version, and communication protocol. For upgrade packages, provide the instrument serial number to ensure compatibility. It is recommended to refer to the original technical manual or contact the supplier to confirm specific applicability.
- Confirm the transmitter model is CPM253 or a compatible series.
- Check the hardware version, e.g., Profibus DP module requires H/W 2.10 or above.
- Upgrade packages require the instrument serial number.
- For relay modules, note the number of contacts and current input requirements.
