Product Overview
E+H Liquisys CLM253 Industrial Conductivity Transmitter
CLM253-CD0005
This universal conductivity measurement transmitter works seamlessly with all standard analog conductive and inductive conductivity sensors for precise liquid analysis. Durable PC/ABS field-mounted enclosure with IP65/NEMA 4X rating, designed for harsh industrial environments. Built-in Process Check System (PCS) with continuous sensor signal live checks and customized alarm configurations. Supports 0/4...20 mA active current output, HART protocol, and PROFIBUS DP/PA fieldbus integration.Features an intuitive two-line display and quick one-touch "CAL" button calibration for fast setup.
The Liquisys CLM253 is a compact, field-mounted transmitter engineered for continuous conductive and inductive conductivity, resistivity, and concentration measurements. Designed to deliver high accuracy and long-term operational reliability, it serves as an indispensable control unit in water management, chemical synthesis, food processing, and power generation.
With its rugged IP65/NEMA 4X enclosure, the CLM253 is built to withstand harsh outdoor environments, aggressive chemical atmospheres, and demanding industrial conditions without compromising measurement accuracy.
Continuous Process Check System (PCS) for Enhanced Safety
Process reliability is paramount in liquid analysis. The CLM253 features an intelligent Process Check System (PCS) that continuously monitors the integrity of the sensor signal. If the sensor output stagnates or displays unnatural fluctuations (indicating sensor coating, clogging, or cable faults), the unit immediately alerts operators, preventing unmeasured process deviations or off-spec product outputs.
Whether monitoring low-conductivity ultrapure water in pharmaceutical applications or highly concentrated acids and bases in chemical processing, the CLM253 handles a wide range of measurement tasks:
Ideal for clean, ultrapure water to medium-conductivity applications (0.00 µS/cm to 60 mS/cm). Suited for highly contaminated, corrosive, or high-salinity liquids (up to 2000 mS/cm).
FAQ
Q1: What type of sensors are compatible with the CLM253 transmitter?
A: The CLM253 transmitter works with all standard analog conductivity sensors (both conductive and inductive types), including sensors with integrated temperature compensation like Pt100 or Pt1000.
Q2: Does the CLM253 support automatic cleaning control?
A: Yes. The transmitter can trigger an automatic cleaning cycle (via Chemoclean) using integrated relay contacts when an alarm or preset limit threshold is reached.
Q3: Can I use this transmitter for high-purity water applications?
A: Absolutely. It features pre-programmed temperature compensation curves (including neutral/acid ultrapure water) fully compliant with USP and European Pharmacopoeia (EP) specifications.
Q4: What mounting option does the CLM253 support?
A: The CLM253 is designed in a rugged field-mounted enclosure (IP65/NEMA 4X) suitable for wall-mounting, pipe-mounting, or post-mounting outdoors and in heavy industrial environments.
Technical Specifications
| Measurement Principle | Conductivity |
|---|---|
| Applications | Water, wastewater, process |
| Features | 4-wire transmitter with dual-line display |
| Design | Conductivity transmitter in a field-mount PC/ABS housing |
| Material | PC/ABS |
| Dimensions | 247 x 170 x 115 mm |
| Temperature Sensor | Display and current output |
| Explosion-proof Certification | No |
| Ingress Protection | IP65 |
| Input | Single-channel transmitter |
| Output | 0/4...20 mA, HART, PROFIBUS |
| Other Certifications | CSA General Certification |
Product documents
Unlock technical documents.
Enter your work email and WhatsApp number once to access all documents for this product.