Grundfos Digital Dosing DID-CU382

Grundfos Digital Dosing DID-CU382

Grundfos Specs    Grundfos Data Book

Monitoring of typical water quality parameters as well
as precise control of disinfectant addition or pH
adjustment is essential for many water treatment
processes. Bus interface as well as data logging
functionalities and intuitive user interface are a must
for M&C today.
The new Grundfos by s::can DID systems are the
perfect combination of s::can’s state-of-the-art digital
sensor technology and Grundfos’ experience in PID
controlling of dosing and disinfection processes. DID
systems are designed to match perfectly with Grundfos
dosing pumps, gas dosing systems as well as systems
for the generation and dosing of chlorine dioxide and
hypochlorite.
Characteristics and main features
DID systems are available as pre-assembled systems
with bypass flow cell or as kits for applications with
tank-immersed sensors.
Variants with bypass flow cell are intended for
monitoring and control of disinfectants, pH, ORP,
conductivity and temperature. The water flow through
the cell is kept at an appropriate level by a flow
restrictor. Lack of water is detected by a flow switch
and leads to an alarm. A shut-off ball valve and a
sampling cock complete the hydraulic installation,
which is compatible with Grundfos standard hoses.
System configurations for tank immersion are available
with up to 2 sensors for pH, ORP and conductivity, and
always include temperature measurement. These
variants allow measurement of water parameters
directly in the tank or basin without the need for a
bypass line and flow cell. The control unit can either be
fixed directly at a wall or back plate, or mounted on a
DIN rail in a cabinet.
CU 382 control unit
• Intuitive plain-text operation
• Data logger functionality
• Up to 3 controller outputs, freely assignable
• Modbus included
• Modbus sensor interface
• Data interchange with USB stick
• Wide-range power supply
Sensors
• Modbus interface to CU 382 control unit
• Onboard storage of calibration data
• Temperature compensation included for all sensors
• Long service intervals
• Pre-calibrated (pH, ORP, conductivity sensor)
• 1-2 sensor variants per parameter for all
applications and measuring ranges
• Diaphragm-covered amperometric sensor principle
for disinfectant sensors
• Low pH dependency for free-chlorine sensors
Pre-assembled measuring system
• Automatic setting of the water flow and detection of
missing water flow in systems with flow cell
• Sensor holder included in systems for tank
installation
• 7.5 m of cable included in systems for tank
installation (extension cables are available in
lengths up to 20 m)
• Sensor guard included in systems for tank
installation


 

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