What to do if calibration aborted on Endress+Hauser Liquisys M CPM253 Transmitter?
If calibration is aborted, repeat the calibration and renew the buffer solution. If necessary, replace the electrode and check the device and measuring cable with a simulator.
What to do if Endress+Hauser Liquisys M CPM253 shows stability requirement for calibration not fulfilled?
If the stability requirement for calibration is not fulfilled, repeat the calibration and renew the buffer solution. If necessary, replace the electrode and check the device and measuring cable with a simulator.
What to do if Endress+Hauser Liquisys M CPM253 Transmitter shows distance of calibration value for buffer pH 2 from zero too short?
If the distance of the calibration value for buffer pH 2 from zero (pH 7) is too short, use a buffer solution that is at least ?pH = 2 from the electrode zero point.
What to do if the distance between calibration values for pH 1 and pH 2 is too short on Endress+Hauser Liquisys M CPM253 Transmitter?
If the distance between calibration values for pH 1 and pH 2 is too short, use buffer solutions that are at least ?pH = 2 apart.
What to do if Endress+Hauser Liquisys M CPM253 Transmitter shows EEPROM memory error?
If you encounter an EEPROM memory error, try the following: 1. Switch the device off and then on again. 2. Load device software compatible with the hardware (with optoscope). 3. Load measurement-parameter specific device software. 4. If the error persists, send the device in for repair to your local Endress+Hauser subsidiary or replace the device.
What to do if I get SCS alarm glass breakage in Endress+Hauser Liquisys M CPM253?
If you receive an SCS alarm indicating glass breakage (for glass electrode) or leakage current > 400 nA (for ISFET), perform the following checks: * Check the glass electrode for glass breakage or hair-line cracks. * Inspect the electrode plug-in head for moisture and dry if necessary. * Check the medium temperature. * Replace the ISFET.
What to do if Endress+Hauser Transmitter shows measured value pH/mV or temperature measured value incorrect?
If the measured value for pH/mV and/or temperature is incorrect, it may indicate a defective transmitter module. Perform a measuring input test by connecting pH, ref, and PM directly at the device with wire jumpers to display pH 7. Also, test the resistance by connecting a 100 ? resistor at terminals 11 / 12 + 13 to display 0 °C.
What to do if Endress+Hauser Liquisys M CPM253 Transmitter shows no current output signal?
If there is no current output signal, which may indicate a defective current output stage, check with installed current simulation and connect a mA meter directly to the current output.
What to do if Endress+Hauser Liquisys M CPM253 displays temperature sensor defective?
If the temperature sensor is defective, not connected, or short-circuited, check the temperature sensor and its connections. If necessary, check the device and measuring cable with a temperature simulator. Also, verify that the correct option is selected in field A5.
What to do if the Endress+Hauser Liquisys M CPM253 Transmitter shows download error?
If you encounter a download error due to an invalid configuration, repeat the download and check the optoscope.
General| Protection class | IP65 |
|---|---|
| Input | Conductive conductivity |
| Temperature measurement | Yes |
| Output | 4 to 20 mA |
| Communication | HART, Modbus |
| Power supply | 24 V DC |
| Display | LCD |
| Ambient temperature | -20 to +60 °C |
| Process temperature | -20 to +100 °C |
Specifies qualifications, authorization, and responsibilities for safe installation, operation, and maintenance.
Defines intended applications and product usage limitations to ensure safety.
Outlines user responsibilities for complying with safety regulations and standards.
Details safe operation practices, including checks and handling of damaged products.
Confirms product design meets state-of-the-art safety requirements and relevant standards.
Explains various electrical symbols used in the manual for clarity.
Provides guidelines for checking packaging and contents upon delivery.
Lists all components included in the package for both field and panel-mounted instruments.
Explains how to find and understand product information on the nameplate and delivery papers.
Details compliance marks like CE and CSA, confirming product standards.
Provides a step-by-step overview of the complete installation process.
Specifies requirements for installing the field and panel-mounted instruments.
Offers detailed guidance for mounting the field instrument in various ways.
Outlines checks to perform after installation to ensure proper setup and protection.
Covers basic wiring practices and device-specific notes for electrical connection.
Details connection diagrams and procedures for devices without Memosens functionality.
Details connection diagrams and procedures for devices with Memosens functionality.
Covers alarm contact configuration and its fail-safe switching.
Outlines essential checks to perform after electrical connection is completed.
Outlines different methods for operating the transmitter (keypad, HART, PROFIBUS).
Describes LED indicators, LC display, and physical operating elements on the device.
Explains the function of each key for navigation, calibration, and setup.
Details how to change between automatic and manual operating modes and control relays.
Guides commissioning for digital sensors, highlighting calibration data saving.
Provides notes on ISFET sensor behavior, sensitivity to light, and switch-on characteristics.
Ensures correct connections and supply voltage for safe operation.
Details the self-test procedure and initial configuration steps after power-up.
Guides through essential initial settings for correct measurement.
Covers detailed setup for pH/ORP, digital sensors, temperature, and current inputs.
Explains how errors are indicated and where to find detailed troubleshooting information.
Lists system error codes, their causes, and suggested remedial measures.
Helps diagnose errors related to the process or sensor interactions.
Identifies errors related to specific instrument components and their troubleshooting.
Covers calibration, cleaning of assembly/sensor, and cable checks for system reliability.
Provides instructions for cleaning the transmitter housing with approved cleaning agents.
Details cleaning procedures for pH/ORP sensors, including specific agents and cautions.
Covers maintenance for digital sensors with Memosens functionality.
Provides guidelines for maintaining the liquid KCl supply for sensors.
Information on ordering spare parts and the data required for orders.
Step-by-step guide for disassembling the panel-mounted instrument.
Step-by-step guide for disassembling the field instrument.
Instructions for replacing the central module and re-entering device settings.
Procedures and conditions for returning devices for repair or calibration.
Guidelines for the proper disposal of electronic components and the device.
Lists available pH and ORP sensors for various applications.
Details measuring cables, junction boxes, and connectors.
Provides options for mounting the field device, such as weather protection and posts.
Lists available software packages and hardware modules like relay cards.
Details high-quality buffer solutions and KCl electrolytes for calibration.
Specifies measured variables, measuring ranges, input resistance, and binary inputs.
Details output signals, HART, PROFIBUS PA/DP communication protocols.
Provides information on supply voltage, fieldbus connections, and mains protection.
Outlines resolution, measurement errors, repeatability, zero point, slope, and offset.
Specifies ambient/storage temperatures, EMC, ingress protection, and electrical safety.
Details dimensions, weight, material, and terminal specifications.
Provides a visual overview of configuration and calibration steps.
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