Cooling & Heating Water

Evaporative Cooling Tower

Track ambient conditions, fan operation, water quality, and basin level around heat-rejection equipment.

Measures: Humidity & temperature · Vibration · Water quality · Level · Condenser water flow · Pump dry-run protection

Used in:Energy and Chemicals Power Generation Data Centres Commercial Buildings

Diagram of the measuring points in a evaporative cooling tower

1 2 3 4 5 6

Click a number to jump to that measuring point. Conceptual view, not for installation design.

Outdoor Humidity & Temperature Transmitters

Outdoor humidity and temperature are measured to optimize evaporative cooling efficiency and water usage.

Dwyer Series RHPX Humidity & Temperature Transmitter with Solar Radiation ShieldRH & Temperature Combo (Optional Absolute RH/Dew Point/Enthalpy); mA/VDC Output Signals; 2% & 3% Accuracy; Solar Radiation Shield

Dwyer Series RHPX Outdoor Humidity & Temperature TransmitterRH & Temperature Combo (Optional Absolute RH/Dew Point/Enthalpy); mA/VDC Output Signals; 2% & 3% Accuracy; Outdoor Enclosure

Vibration Transmitters

Vibration transmitters detect abnormal equipment vibration, preventing mechanical failures in the cooling tower.

Dwyer Series-VBS Compact Vibration Switch for RMS Monitoring, Adjustable Set Point & DelayCompact vibration switch; adjustable RMS velocity & delay; 4‑20 mA output

Omega Series VT-110 Compact Vibration Velocity TransmitterMonitor Vibration in Harsh Industrial Environments; 4- 20 mA Loop Powered; IP67; M12 Female Connector

Omega Series VBT-1 Vibration Transmitter with 4-20 mA outputVibration Transmitter; 10 to 1000 Hz; 4-20 mA Loop Powered; IP68 (NEMA 6); 316 SS; M12 4 Pin Female

Omega Series AS-667 B&K Vibro Low Frequency AccelerometerGeneral Purpose Measurements on Rotating Machinery; 4-20 mA Loop Powered; IP66/IP67; 316 SS; M12 4 Pin Male

Water Quality Sensors & Transmitters

Water quality sensors monitor conductivity and pH to prevent scale, corrosion, and biological growth.

Omega Series CDTX45 2-Wire Isolated Conductivity Transmitter SystemIsolated Conductivity Transmitter System; 2-Wire 4-20 mA Output; 4 Titanium Electrodes; High Chemical Resistance; NEMA 4X Enclosure

Omega Series AM-2250TX Multi-Variable pH, ORP, Conductivity & Flow Loop Powered TransmitterMulti Variable Controller (pH, ORP, Contacting Conductivity, Flow); Two 4-20 mA Outputs; 3 Dry Contact Relay Outputs; NEMA 4X Enclosure

Omega Series PHTX45 2-Wire Isolated pH/ORP Transmitter SystemIsolated pH/ORP Transmitter System; Two-Wire 4-20 mA Output; IP65 (NEMA 4X); Universal Mounting Configurations

Omega Series PHTX-100 Loop Powered Indicating pH/ORP Meter & TransmitterIsolated pH/ORP/Temperature Meter & Transmitter System; Two-Wire 4-20 mA Output; IP65 (NEMA 4X); Wall & Panel Mounted

Omega Series FMG80A Low Flow MagmeterOmega FMG80A low-flow magmeter, 1/4 to 3/4 in, all-plastic PVDF body for chemical injection and pulsating metering pumps: ±1% of reading, pulse and 4-20 mA.

Level Detection Transmitters & Switches

Level detection ensures proper water levels in the cooling tower basin for continuous operation.

Dwyer Series F6-F7 Vertical Level Switches for Water, Oil & ChemicalsDwyer F6/F7 vertical float level switches for water, oils and chemicals: hermetically sealed reed switch, many float materials, up to 750 psig and 149 °C.

Omega Series LVN10-20 Vertical Mounted Liquid Level SwitchLiquid Level Switch; Reversible Switch Action; Reed Switch; IP68 (NEMA 6) Rating; Brass Stem; BUNA-N Float Material

Omega Series LVSW-701 Single Point Ultrasonic Liquid Level SwitchSingle Point Ultrasonic Level Switch; 316 Stainless Steel; Mounts in any Direction; SPDT Selectable contact; 1A switch Rating

Omega Series LVU150 Submersible Ultrasonic Level SwitchSubmersible Ultrasonic Level Switch; Selectable SPST N/O or N/C Relay; 1A Contact Rating; IP68 (NEMA 6)

Dwyer Series L10 Mini Brass & Stainless Steel Float Switches for Liquid ControlMagnetic Reed Switch; Side Mount; N/O or N/C Selectable Contact; Optional Float/Body Materials; IP66 (NEMA 4X)

Omega Series LVN90 Side Mount Liquid Level SwitchesSealed SPST Switch; Side Mount; N/O or N/C Selectable Contact; Optional Float/Stem Materials; IP68 (NEMA 6)

Omega Series LVV110 Vertical Buoyancy Level Switch SensorsFilling Baffle with Self Flushing Design; Sealed SPDT N/O or N/C Selectable Contact; Eliminates Surface Chatter; IP68 (NEMA 6)

Dwyer Series L8 Flotec Liquid Level Float SwitchesGeneral Purpose applications; Horizontal Mount; Excellent Chemical Resistance; SPDT Snap Switch; Optional Weatherproof Enclosure

Omega Series LVSW-710/720 Compact Ultrasonic Point Level SwitchSolid State Liquid Level Switch; Small Size; N/O SPST Relay, 1A Switch Rating; 316L SS Wetted Materials

LWT300 Guided Wave RadarABB LWT300 guided wave radar level transmitter for up to 204 °C and 207 bar, with hazardous-area certification, HART 7 and SIL2/SIL3 options.

Condenser Water Flow

Clamp-on ultrasonic flowmeters measure condenser water circulation from outside the pipe, on pipes up to several metres across, and can be fitted to a running system without a shutdown.

Fixed MinisonicFaure Herman single-chord clamp-on transit-time ultrasonic flowmeter for liquids, with OLED display, 4-20 mA output, two contact outputs and a 1.8 GB data logger.

Uf821 Ultrasonic Fixed FlowmeterFaure Herman fixed clamp-on ultrasonic flowmeter for liquids: up to 4 measuring points per unit, accuracy to 0.5% of reading, on steel, PVC, cast iron or stainless pipes.

Pump Dry-Run Protection

Thermal flow switches on the circulating pumps give early warning of dry running, before a pump fails or the cooling tower has to shut down.

FLT93 Thermal Dispersion SwitchFCI FLT93 heavy-duty thermal dispersion flow and level switch with no moving parts, for liquids, gases and interfaces in process plants.

Application data from the DwyerOmega Application Navigator ↗. Ronsor can help adapt it to your site.