Valentine’s Day is all about great pairings. Couples that work together work better. In HVAC and industrial systems, the same principle applies. The right combination of devices can protect equipment, prevent downtime, and keep systems running smoothly long after the honeymoon phase has ended.
Keeping the Relationship on the Level
Pairing Series F6 and F7 Level Switches with a WD3 Water Leak Detector demonstrates how layered protection reduces risk in HVAC and water-handling systems. Each device plays a distinct role, but together they provide a balanced, dependable safeguard before minor issues become major problems.
In normal operation, liquid rises where it is expected. Series F6 and F7 Level Switches monitor those controlled conditions and provide early warning when levels climb too high. If containment fails and water escapes where it does not belong, the WD3 Water Leak Detector delivers immediate reactive protection.
Series F6 and F7 Vertical & Horizontal Level Switches
Series F6 and F7 Level Switches are designed to be installed at defined high or low points to provide reliable level indication and control for water, oil, and chemical applications.
Available in vertical and horizontal configurations, these switches combine low cost, mechanical simplicity, and long-term reliability.
Vertical Models:
- Mounted internally at a maximum or minimum level point
- Oriented within 30 o of vertical, with optional fittings for external mounting
- Normally open contacts that close as the float rises
- Easily reversible switch action by flipping the float end-for-end
- Mounted through tank or vessel walls
- Hermetically sealed reed switches for dependable performance
- Open or closed circuit options for rising or falling levels
- Specialty designs for viscous liquids, suspended metal particles, low-level detection, non-intrusive external mounting, and standpipe or sump applications
Common Applications:
- Condensate pans
- Sumps and stand pipes
- Tanks and vessels
- Oil and chemical level indication
- High-viscosity liquids
Series WD3 Water Leak Detector
While Series F6 and F7 Level Switches monitor controlled liquid accumulation, the WD3 Water Leak Detector focuses on the opposite problem: escaped water.
The WD3 Leak Detector detects water when liquid bridges the conductive sensing strips on the bottom of the housing, triggering audible, visual, or remote alarm outputs depending on the model.
Key Features:
- Adjustable sensing height down to 0.79 mm (1/32 in)
- Mounting bracket with adhesive strips or screw mounting
- AC, DC, or battery-powered options for locations without power
- Local alarms and remote indication or control outputs
Common Applications:
- AHU drip pans
- Under raised floors in data centers
- Around sump pumps and drains
- Radiant floor systems
Why This Pairing Works
Together, these devices create a proactive-versus-reactive protection strategy:
- Series F6 and F7 Level Switches detect rising liquid levels where water is expected
- The WD3 Leak Detector identifies water where it absolutely is not
Built on Balance
The PR-12 RTD Probe and the Series 260W Thermowell are designed to work together in environments where accurate temperature measurement must be protected from harsh process conditions.
One component focuses on precision and sensitivity. The other is built for strength and protection. Together, they deliver accurate temperature measurement while shielding the sensor from pressure, flow, vibration, and corrosive media.
Series PR-12 Industrial RTD (PT100) Probes
The PR-12 RTD Probe is designed for reliable temperature measurement in demanding industrial environments where durability matters just as much as accuracy.
Key Characteristics:
- PT100 or PT1000 platinum RTD element
- Temperature ranges from –50 °C to 250 °C, –50 °C to 450 °C, or up to –200 °C to 600 °C depending on configuration
- 316 stainless steel sheath for corrosion resistance
- Chemical-resistant cast iron protection head with screw-on cap
- 1/2 in NPT mounting threads
- Integrated screw terminal block for easy connection of insulated copper extension wire
Series 260W Socket-Weld Thermowell
The Series 260W Thermowell is designed to physically protect temperature sensors from process pressure, flow, and mechanical stress while maintaining reliable heat transfer.
Key Features:
- 0.260 in bore diameter for 1/4 in diameter sensors
- Socket-weld design with straight shank for secure installation
- Available in stainless steel, carbon steel, and brass
- Standard insertion lengths from 2.5 to 22.5 inches
- Compatibility with PR-12 probes and other 1/4 in diameter temperature sensors
Why This Pairing Works
Together, the PR-12 RTD Probe and the Series 260W Thermowell form a measurement-and-protection partnership: one focuses on precision. The other takes the abuse. In demanding industrial environments, that balance keeps temperature measurement reliable and repeatable.
Better Together
The UFM Standard Series Variable Area Vane Flowmeter and the Series 16A Controller form a natural pairing in liquid flow applications where both indication and control are required. One provides dependable, real-time flow measurement. The other turns that measurement into action.
UFM Standard Series Variable Area Vane Flowmeters
The UFM Standard Series Variable Area Vane Flowmeter (Series SN-SM-SH-MN-MM-MH-LN-LE-XHF) provides true in-line, vane-style variable area flow measurement for a wide range of liquid applications. A rugged mechanical vane and pointer deliver reliable visual indication without the need for external power, while optional 4–20 mA or HART® outputs allow the flow signal to be shared with a controller or monitoring system.
With no straight-pipe run requirements and installation possible in any orientation, these meters integrate easily into water/wastewater, mining, and construction systems. Each unit is individually calibrated to the specified fluid viscosity and compensated for specific gravity to ensure consistent performance across varying conditions.
Key Features:
- Extremely configurable: Over 1 million combinations of features is possible
- Rugged vane-style in-line flow measurement for liquid applications
- Pointer or digital LCD display options with 4–20 mA and HART® outputs available
- Wide operating range covering 8 mm to 203 mm pipe sizes and 2 to 5600 LPM flows
- Individually calibrated to fluid viscosity with specific gravity compensation and optional NIST-traceable calibration
Series 16A Controller
The Series 16A Controller completes the pairing by accepting the analog output from the flowmeter and applying logic, alarms, or control actions based on system requirements.
Its universal input design allows it to accept current, voltage, RTD, or thermocouple signals, making it easy to integrate into existing panels. With Self-Tune PID control, selectable control modes, and a rugged NEMA 4X / IP66 waterproof front, the controller provides reliable operation in demanding industrial and sanitary environments. The compact 1/16 DIN form factor allows it to fit where space is limited.
Key Features:
- Accepts analog outputs from flowmeters and other field devices for control, logic, and alarm functions
- Universal input supports current, voltage, RTD, and thermocouple signals
- Self-Tune PID control with selectable control modes for stable, responsive performance
- Compact 1/16 DIN size with a NEMA 4X / IP66 waterproof front for harsh industrial and sanitary environments
Why This Pairing Works
Together, these devices create a direct measurement-to-control path:
- The flowmeter provides accurate, stable flow data
- The controller determines how the system should respond
- Alarms, logic, or downstream control actions are driven by real process conditions
Turning Up the Heat
KHRA, KHLVA, and KHA Series Flexible Heaters and KTO and KTS Series Compact Thermostats are compatable to work together in applications where controlled heat is required.
The heater supplies localized warmth exactly where it is needed. The thermostat ensures that heat is applied only when conditions call for it. Together, they form a controlled heating solution that protects equipment, improves reliability, and avoids unnecessary energy use.
KHRA, KHLVA, and KHA Series Flexible Heaters
KHRA, KHLVA, and KHA Series Flexible Heaters use an etched foil design encapsulated in polyimide film to deliver thin, uniform heating across complex surfaces.
With a maximum thickness of just 0.010 in, these heaters conform easily to curved or irregular geometries and fit into tight spaces where rigid heaters cannot.
Key Features
- Rated up to 150 °C (302 °F)
- Available watt densities of 2.5, 5, or 10 W/in²
- Polyimide insulation with strong chemical resistance
- Pressure-sensitive adhesive options for fast, secure installation
- Ideal for freeze protection, condensation control, and temperature stabilization
KTO and KTS Series Compact Thermostats
KTO and KTS Series Compact Thermostats complete the pairing by regulating when heat is applied. Designed for DIN rail mounting, these thermostats provide adjustable temperature control in a compact, durable package.
Key Features:
- Wide adjustable temperature ranges
- Available in °C or °F versions
- Normally open and normally closed models
- Color-coded temperature dials for quick setup
- Compact DIN rail mounting for control panels and enclosures
Why This Pairing Works
Used together, these devices create a dependable heating system:
- The flexible heater provides targeted, uniform warmth
- The thermostat prevents overheating and unnecessary run time
- Equipment is protected from freezing, condensation, and thermal stress
Made for Connection
Some pairings are all about staying connected.
XC-K-TC-WIRE K Type Thermocouple Duplex Wire, paired with SMPW-K-M Male and SMPW-K-F Female Miniature Thermocouple Connectors, forms a complete signal path from the sensing point to the instrument. Each component plays a specific role, and the system only works properly when all three are matched.
XC-K-TC-WIRE K Type Thermocouple Duplex Wire
XC-K-TC-WIRE K Type Thermocouple Duplex Wire provides a reliable, high-performance connection between K-type thermocouples and instrumentation in demanding industrial environments.
Constructed with high-quality solid conductors, this duplex thermocouple wire maintains signal integrity over long distances while resisting temperature extremes, chemical exposure, and mechanical wear. Clearly marked polarity and color-coded insulation simplify installation and reduce wiring errors in complex systems.
Key Features:
- Thermocouple-grade Type K conductors
- Duplex construction for consistent, stable readings
- Choice of insulation, wire gauge, and length
- Available in IEC and ANSI color codes
- Offered in standard or Special Limits of Error (SLE) accuracy
SMPW-K-M and SMPW-K-F Miniature Thermocouple Connectors
The SMPW-K-M Male andSMPW-K-F Female Miniature Thermocouple Connectors complete the connection by providing secure, polarity-correct terminations at instruments, extension points, or panels.
Designed specifically for Type K thermocouples, these connectors maintain material continuity through the connection point, preventing unwanted junction errors.
Key Features:
- Miniature flat-pin design for compact installations
- ANSI color coding for quick identification
- Glass-filled nylon construction for durability
- Write-on window for clear labeling
- Operating temperature range from –29 °C to 180 °C
Why This Pairing Works
Used together, these three components create a complete, dependable thermocouple connection system:
- The thermocouple wire transmits the temperature signal accurately
- The connectors preserve polarity and material continuity
- Signal integrity is maintained from sensor to instrument
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