Nivelco Instruments – Refrigeration and Cooling

Nivelco Process Instruments for Refrigeration and Cooling Process

Updated October 11, 2014 with video

Nivelco and Aqua Technology Group can provide all you instrumentation needs for refrigeration, ammonia cooling and related processes.

 

The Nivelco Refrigeration and Cooling process diagram below illustrates a cooling technologic process commonly used in food, chemical and pharmaceutical industrial plants.

Instruments for Ammonia Refrigeration Plant

On the process diagram can be seen the cooling compressor applying ammonia, the circulating pump system and the liquid separator tank with the proposed Nivelco devices.

Nivelco Product Used

Instrumentation of the compressor:

  • The measurement of the pressure on the suction and pressure side is accomplished by NIPRESS DRC-3xxx type pressure transmitter
  • The measurement of the temperature is completed by THERMOCONT TTJ-Sxxx temperature transmitters
  • The suction side pressure transmitter performs the power control or the compressor, while the pressure side transmitter controls the condenser

Instrumentation of the liquid-separator:

  • The continuous level measurement is executed by NIVOCAP CTR-2xxx type capacitive level transmitter
  • This device controls the feeding valve applying me UNICONT PMM-311 type controller
  • The upper and lower failsafe switching is executed by NIVOMAG MKA-210 type level switches,
  • As high level is reached, the compressor shuts off, while at low level the ammonium pump is stopped.

Instrumentation of the liquid tank:

  • The instruments and procedure is similar to the separator but a NIVOTRACK MRC-5xxx type level transmitter is recommended due to the high pressure (16 bar)

Instrumentation of the cooling water:

  • A continuous level measurement is accomplished with EchoTREK SGA-3xxx type ultrasonic level transmitter, the level in the tank is kept constant by the help of a UNICONT PMM-311 type controller by actuating a supplementary water valve
  • The continuous conductance measurement is executed with an ANACONT LGK-2xxx type device,
  • The conductivity or cooling water is permanently increasing due to the evaporation in the condenser, so at a predetermined value, the PMM-311 controller opens the emptying as well as the supplementary valve
  • The low and high failsafe NIVOSWITCH RFM-401 type switches protect the pump and issue the alarm signals.

Instrumentation of the condenser:

  • The level control of the water tank under the condenser is accomplished by a NIVOCONT KKH-222-5 type level switch.

 

Water Treatment Plant Instruments from Nivelco – Potable Water Production

Nivelco Process Instruments for Water Treatment Plants – Potable Water Production

instruments for water treatment plant

 

Nivelco and Aqua Technology Group can provide all your instrumentation needs for production wells, purification, treatment, and distribution system.

water treatment plant instruments technical description

PRODUCTION WELLS

The production wells are drilled in ground layers rich in water, the pumps are lowered into the wells to pump the raw water to the central water treatment facilities.

  • Measuring tasks:
  • Continuous level measurement of the well
  • Temperature measurement of the water
  • Hydrostatic pressure (water level) of the production well
  • Flow of the produced water
  • Dry-run protection of the pumps

RECOMMENDED INSTRUMENTS

  • Hydrostatic level transmitters that combine level and temperature measurement: the NIVOPRESS N transmitter family.
  • Piezoresistive pressure transmitters: NIVOPRESS NZK types
  • Water input measurement: ISOMAG electro-magnetic flow meters

WATER TREATMENT PLANT

The raw water pumped from the production wells contains different organic and inorganic materials. These materials have to be removed from the water. Removal is done either by mechanical filters or by adding coagulant materials to the water to help precipitate the contaminating materials. The resulting slurry is separated in settling tanks. The clean water is often passed through sand or other final filtration stages.

RECOMMENDED INSTRUMENTS

WATER DISTRIBUTION SYSTEM

To move water out to the distribution system and to the customers, the pressure in the system has to be increased. This is done by booster pumps, water towers or air charged pressure vessels with compressed-air pumps.

RECOMMENDED INSTRUMENTS

Nivelco Field Instruments In Measurement Systems

Nivelco

Aqua Technology Group is proud to offer quality Nivelco process instruments.

NIVELCO Product MATRIX

LEVEL TRANSMITTERS
Non-contact MicrowavePiloTREK
Guided MicrowaveMicroTREK
Ultrasonic CompactEchoTREK for liquids
EchoTREK for solids
Ultrasonic IntegratedEasyTREK for liquids
EasyTREK for solids
CapacitiveNIVOCAP
MagnetostrictiveNIVOTRACK
Hydrostatic pressureNIVOPRESS D
NIVOPRESS N – borehole transmitter
LEVEL SWITCHES
FloatNIVOFLOAT
ConductiveNIVOCONT K
Magnetic CouplingNIVOMAG
Magnetic TrackingNIVOPOINT
VibratingNIVOCONT R – vibrating rod
NIVOSWITCH – vibrating fork
Rotary PaddleNIVOROTA
LIQUID ANALYSIS
pH and ORP transmittersAnaCONT LE
Conductivity transmitterAnaCONT LEK / LCK
DISPLAYS AND CONTROLLERS
Loop indicatorUNICONT PDF
Controller/IndicatorUNICONT PMM
UNICONT PMG
Controller / Programmer / IndicatorMULTICONT
PRESSURE
Pressure transmitterNIPRESS
Hydrostatic pressureNIVOPRESS D
TEMPERATURE
ThermometersTHERMOCONT TT
Temperature sensorTHERMOCONT TN
SENSORS AND ACCESSORIES
Current Controlled SwitchUNICONT PKK
Ultrasonic Proximity SensorMICROSONAR
AccesoryHART MODEM
Universal Interface ModuleUNICONT PJK-100
Power supplyNIPOWER
SOFTWARE
Process visualization softwareNIVISION
OLDER PRODUCTS
Ultrasonic Two-part SystemNIVOSONAR