Liquiline Compact CM82

Summary

Product identification

• Product Name: Liquiline Compact CM82
• Product Type: Configurable multi-parameter transmitter for Memosens sensors
• Document: TI01397C/07/EN/03.22-00

Application

The CM82 transmitter is designed for monitoring and controlling industrial and environmental processes. It supports Memosens sensors for:

• pH
• ORP
• pH/ORP combined sensors
• Contacting conductivity
• Oxygen

Key Features and Benefits

• Space-saving: Two-wire device that fits into an assembly, requiring no separate power supply.
• Memosens Technology: Ensures safe, reliable, and digital signal transmission with features like galvanic isolation, watertight connections, and lab calibration capability.
• Communication:
  • 4 to 20 mA output
  • HART
  • Bluetooth® LE interface (optional) for commissioning, maintenance, and remote operation via tablet/smartphone using the SmartBlue app.
• Operation: Standardized concept across the Liquiline platform.
• Reliability: Predictive maintenance through recording of sensor data (operating hours, temperature, sterilizations, sensor condition).
• Durability: Suitable for various environmental conditions including dust, steam, rain, snow, heat, and cold.
• USP/EP Compliance: Supports measurements for "Water for Injection" (WFI), "Highly Purified Water" (HPW), and "Purified Water" (PW) with alarm functions.

Communication and Data Processing

• Protocols:
  • 4 to 20 mA
  • Fieldbus HART
  • Bluetooth® LE wireless technology (optional)
• Full device configuration is possible via Fieldbus and Bluetooth.

Input

• Measured Variable: Digital Memosens sensors for pH, ORP, pH/ORP combined, Conductive conductivity, Dissolved oxygen.
• Input Type: Digital sensor inputs for Memosens-sensors.
• Measuring Range: Refer to the documentation of the connected sensor.

Output

• Output Signal: 4 to 20 mA / HART, galvanically isolated from sensor circuits.
• Linearization: Linear.
• Transmission Behavior: Linear.

Power Supply

• Supply Voltage:
  • 12.6 to 30 VDC (when failure current setting > 20 mA)
  • 14 to 30 VDC (when failure current setting < 4 mA)

Performance Characteristics

• Resolution (Current output): < 5 µA
• Repeatability: Refer to the documentation of the connected sensor.
• Response Time (Current output): t90 = max. 500 ms for an increase from 0 to 20 mA.
• Tolerance (Current output at 25 °C):
  • < ±20 µA (if current value = 4 mA)
  • < ±50 µA (for current values 4 to 20 mA)
  • Additional tolerance: < 1.5 µA/K

Environment

• Ambient Temperature Range: –20 to 85 °C (–4 to 185 °F)
• Storage Temperature: -40 to +85 °C (-40 to 185 °F)
• Relative Humidity: 5 to 95 %
• Degree of Protection: IP 67, IP 68, NEMA Type 6
• Electromagnetic Compatibility (EMC): EN 61326-1, EN 61326-2-3, EN 301489-1, EN 301489-17, NAMUR NE 21
• Electrical Safety: EN 61010-1
• Operating Height: < 2000 m (< 6562 ft) above MSL
• Pollution Degree: Complete device: Level 4; Internal: Level 2

Mechanical Construction

• Dimensions: See drawing in PDF.
• Materials:
  • Housing, cover: Peek 151
  • Strain relief: EPDM (peroxide crosslinked)
  • Axial ring: Peek 450 G
  • Optical waveguide: PC transparent
• Impact Loads: 1 J (IK06) as per EN 61010-1.
• Weight:
  • Approx. 42 g (1.5 oz) without cable
  • Approx. 190 g (7 oz) with 3 m cable
  • Approx. 380 g (13 oz) with 7 m cable
  • Approx. 760 g (27 oz) with 15 m cable
  • Approx. 48 g (2 oz) per additional 1 m cable

Operability

• Operating Concept: Bluetooth® LE wireless technology and HART.
• Software: SmartBlue app (Android and iOS) for operation and commissioning.

System Design

A complete measuring system includes:

• Liquiline compact transmitter
• Sensors with Memosens technology
• Assemblies suited to the sensors

Accessories

A variety of Memosens sensors for pH, ORP, pH/ORP combined, conductivity, and oxygen are available. Software like Memobase Plus and DeviceCare, along with accessories like activation codes and junction boxes, are also listed.

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Disclaimer: This extraction may miss figures, footnotes, or revisions. Contractual data must match the OEM PDF revision used on the project.

Official datasheet (PDF)

Lenntech datasheet mirror