Engineering Houses and Contractors

At PCT Flow, we work closely with engineering houses and contractors to make sure your projects run as smoothly as possible — from initial design to final installation. We know every job is different, which is why we offer flexible, reliable solutions that fit your specific requirements. Whether you need trusted products for flow control, accurate measurement tools, or technical support along the way, we’re here to help. Our wide range of quality equipment is backed by expert advice and fast, friendly service. So whether you're working on a large-scale industrial build or a smaller custom project, you can count on us to deliver the right tools at the right time — and make your job easier.

Instruments used by Engineering houses and contractors

Engineering houses and contractors across the UK and Ireland deliver complex mechanical, electrical and process projects—from HVAC retrofits and water treatment skids to laboratory test rigs and plant upgrades. Success depends on instrumentation that integrates cleanly to PLC/BMS/SCADA, reduces wiring complexity, and speeds FAT/SAT and handover. PCT’s portfolio has been curated to help project teams specify once and deploy repeatedly: DIN rail signal conditioning for clean I/O, robust panel meters for local indication and batching, clamp on and inline flow solutions for verification, and pressure, temperature, humidity and gas mixing technologies that meet UK and Irish practices.

The sections below map common contractor applications to specific products, with practical summaries and feature/benefit highlights to shorten specification and commissioning time.

Typical applications

Signal isolation and conditioning for PLC/BMS integration

Contract projects frequently combine legacy sensors with modern PLC/BMS hardware, creating signal compatibility and electrical noise challenges. Robust isolation prevents ground loops on long cable runs and protects expensive controllers. Signal conversion and scaling reduce rework by matching the PLC card range and engineering units without code changes. Splitting and boosting loops lets one transmitter cleanly feed a PLC, a local indicator, and a safety relay—simplifying panel architecture. Standardising on configurable DIN rail modules shortens FAT/SAT and future maintenance. Tagging and documentation features also help contractors hand over systems with complete records.

Relevant products:

Status SEM1600 Series Signal Conditioners & Loop Devices - The SEM1600 family provides isolation, scaling and conversion for current/voltage signals, while loop isolators/splitters cleanly distribute the same measurement to multiple destinations. USB/NFC configuration (with device tagging) streamlines setup and aids documentation. Compact DIN rail housings fit standard panels, and consistent accessories reduce BOM spread across large projects.

Key benefits:

Galvanic isolation to eliminate ground loops and noise
Wide I/O compatibility (4–20 mA, voltage) for mixed sensor projects
USB/NFC configuration with tagging for faster FAT/SAT and clean records
DIN rail formats to standardise panels and spares

Local indication and batching control for process panels

Front panel indication is invaluable during commissioning and routine diagnostics, especially when laptops aren’t permitted on site. When simple batches or totalising are needed, panel meters can trigger relays directly—saving PLC rewrites late in a project. Universal input support reduces SKUs and simplifies spares. Clear displays with straightforward keypad programming help technicians verify signals and alarms quickly. Retransmission and Modbus communications provide clean handoff to PLC/BMS while maintaining local visibility.

Relevant products:

Status DM3600A Panel Meter (rate/totaliser, batching) - DM3600A accepts thermocouples, RTDs, current and voltage inputs, with programmable maths, rate/totaliser and batch functions. Optional relays can start/stop pumps or valves, while analog retransmission and RS 485 Modbus simplify integration to PLC/BMS. Front panel programming and TFML function modules accelerate onsite setup and future tweaks without hardware changes.
Key benefits:
- Built in totaliser and batching for simple local sequences
- Universal inputs to standardise meters across projects
- Relay, retransmission and Modbus for flexible I/O/communications
- Front panel configuration to speed commissioning

Temperature sensing and transmitter integration for heating/cooling loops

Heating and cooling circuits depend on accurate temperature for control, energy reporting and alarm functions. Many projects require custom probe lengths/diameters and specific process connections to match mechanical layouts. Thermowells protect sensors from vibration and allow hot swap maintenance without draining the loop. Using a consistent sensor/thermowell family simplifies mechanical integration and spares. Stainless construction supports utility and hygienic services, and compatibility with compression fittings helps standardise installation.

Relevant products:

PCT PT100 RTD Assemblies and PCT Solid/Fabricated Thermowells - Made to order PT100 assemblies with 316SS tips fit common compression fittings and provide repeatable measurements for OEM packages and site retrofits. Solid and fabricated thermowells provide mechanical protection and allow sensor replacement without process disruption—ideal for contractor maintenance regimes. Together they deliver a robust, standardised approach to temperature sensing across diverse projects.
Key benefits:
- Custom geometries for exact fit on skids and plant loops
- 316SS wetted parts for utility and hygienic duties
- Thermowells enable sensor swap out without drain down
- Compatible with compression fittings for standardised installation

Humidity and temperature monitoring for AHUs and cleanrooms

Indoor air quality and environmental control rely on accurate RH/T sensing. Contractors benefit from dual channel outputs that feed humidity and temperature directly to BMS, plus optional displays for quick verification. Duct and wall versions simplify mechanical integration across AHUs, plant rooms and clean areas. USB/NFC configuration with tagging/logging speeds setup and supports audit trails. IP65 enclosures and selectable stem lengths suit harsh or constrained installations.

Relevant products:

Status SEM710 Humidity & Temperature Transmitter - SEM710 provides dual 4–20 mA outputs for RH/T and can also report dew point or ∆T, with duct and wall variants for versatile mounting. USB/NFC configuration tools enable tagging, logging and range selection, while optional displays assist commissioning. Its IP65 housing and stem options fit a wide range of AHU and cleanroom projects.
Key benefits:
- Dual channel RH/T outputs for direct BMS integration
- USB/NFC configuration and logging for clean documentation
- Duct/wall formats with IP65 enclosure to ease installation
- Optional local display to speed onsite QA

Clamp on flow measurement for commissioning and energy audits

Commissioning teams often need flow data without shutting down live systems. Clamp on ultrasonic meters install externally, avoiding pipe cuts and contamination risk. They’re ideal for temporary studies, balancing and energy audits across chilled/hot water loops. Bidirectional measurement and wide pipe/material compatibility make them versatile. Pairing with temperature inputs enables energy calculation for compliance reporting.

Relevant products:

Dynasonics TFX 5000 Clamp On Ultrasonic Flow Meter - TFX 5000 mounts on the pipe exterior, providing bidirectional flow measurement and signals suited to BMS/SCADA. It supports energy metering when used with temperature inputs, making it a strong choice for commissioning and audits. The non intrusive install reduces risk and shortens onsite time.
Key benefits:
- Non invasive installation avoids downtime and pipe work
- Works across common pipe sizes and materials
- Bidirectional measurement with energy calculation capability
- Clean outputs for BMS/SCADA integration

Inline flow verification for pump and circuit performance

Inline meters confirm pump curves, verify setpoints and provide continuous feedback to control loops. Contractors need compact devices that deliver reliable accuracy where straight run is limited. Immediate feedback during FAT/SAT and post handover reduces call backs. Standardising on a rugged meter family simplifies spares and field support.

Relevant products:

LX Flow Turbine Meter - LX Flow turbine meters deliver compact inline measurement suitable for utility loops and packaged systems, with wiring that integrates cleanly to panel meters or PLCs. The small footprint fits tight skids and confined plant spaces, and the measurement principle provides stable readings for tuning and verification.
Key benefits:
- Compact inline form factor for tight layouts
- Reliable accuracy for pump and loop checks
- Simple wiring to PLCs/meters for real time feedback
- Durable construction for utility environments

Differential pressure monitoring across filters and heat exchangers

DP measurement is the quickest way to detect fouling, clogging or hydraulic imbalance across filters and exchangers. Contractors benefit from transmitters with high accuracy, temperature compensation and flexible process connections to match site standards. Loop powered designs simplify wiring, and robust housings support plant environments. Local setup and mA simulation features help technicians complete FAT/SAT quickly.

Relevant products:

PCT Z2 Series Pressure Transmitter - Z2 offers 0.1% span accuracy, full temperature compensation and hygienic/industrial connections, making it suitable for DP and level duties. IP66 housings and loop powered integration support utility conditions, while local setup and mA simulation accelerate commissioning.
Key benefits:
- High accuracy DP with temperature compensation
- Hygienic and industrial connections to meet plant standards
- IP66 protection and loop powered simplicity
- Local setup and output simulation to speed FAT/SAT

Pressure regulation for process and utility circuits

Stable pressure protects equipment, improves product quality and keeps control loops within range. Compact regulators with fast response and predictable setpoint behaviour suit skids and burner atomisation circuits. Differential designs with sliding gate technology reduce turbulence and deliver tight shutoff in a small footprint. Multiple body materials and end connections ensure compatibility with site standards.

Relevant products:

Jordan Valve Mark 63/64 Differential Pressure Regulators: Mark 63/64 maintains a constant differential using sliding gate seat technology that provides straight through flow, short stroke and accurate regulation. Options for threaded or flanged ends and varied materials fit utilities and process circuits. The MK64’s larger diaphragm offers improved sensitivity where fine control is needed.
Key benefits:
- Sliding gate seat for fast response and quiet operation
- Compact footprint ideal for skid packages
- Wide connection and material options for OEM alignment
- Differential control suited to filters, burners and utility headers

Gas mixing and blending for OEM systems and test rigs

Many contractor projects—labs, pilot plants and production—require precise gas blends with fast step changes and verifiable logging. The ability to scale from benchtop to rack or turnkey systems reduces engineering overhead. Digital interfaces, web UIs and stored gas libraries shorten setup and validation. Fast response minimises waste during transitions, and traceable calibration supports QA and audits.

Relevant products:

Fusion Flow MXM Precision Gas Mixer - MXM blends up to ten gases with ±0.6% mix accuracy and ~25 ms response, from 200 SCCM to very high flows. It offers web access, multiple form factors (turnkey, standalone, rack) and extensive data logging—ideal for contractors delivering repeatable gas mixing capability.
Key benefits:
- Multi channel precision blending with rapid response
- Turnkey, benchtop and rack formats to fit project needs
- Web UI and logging to streamline validation and QA
- Broad flow/gas compatibility for flexible integration

Chemical dosing and metering for water treatment and HVAC skids

Accurate chemical dosing is central to disinfection, corrosion control and pH adjustment in utility and HVAC projects. Contractors need compact, controllable pumps that integrate to PLCs/BMS, handle varied viscosities and deliver repeatable low flow accuracy. Selecting a single pump platform across projects simplifies spares, training and onsite service. Serial/analog control options support closed loop dosing strategies and recipe changes.

Relevant products:

Longer WT3000 Micro Gear Pump : WT3000 delivers precise low flow dosing with brushless drive options, stainless pump heads and RS 485/analog interfaces for automation. Its compact footprint suits skid packages, and the design accommodates fluids up to moderate viscosities. Repeatable volumetric performance supports compliance across treatment processes.
Key benefits:
- Precise low flow dosing for disinfection and pH control
- RS 485/4–20 mA interfaces for PLC/BMS integration
- Compact form factor for tight skid layouts
- Stainless wetted components for durability

Commissioning and FAT/SAT verification using portable test kits

Handover demands quick verification of pressure and flow on live systems. Portable test kits allow teams to validate performance without mains power or complex rigs. Rugged cases and familiar fittings reduce setup time and user error. Reusable kits standardise contractor tooling across projects and reduce hire costs. Simple displays and analogue outputs help record results clearly.

Relevant products:

HydraPro Water Flow Pressure Test Kit - HydraPro measures service pressure and flow for rapid onsite checks in water circuits, making FAT/SAT and commissioning more efficient. Its portability and simplicity suit mechanical contractors and project commissioning teams.
Key benefits:
- Portable verification with minimal setup
- Suitable ranges for common utility loops
- No mains power required for fast diagnostics
- Reusable tooling to standardise contractor workflows

Data logging and communication setup for BMS and industrial networks

Projects often require a simple edge device to display values locally, provide alarms, and hand off data to BMS/SCADA. A universal panel meter with retransmission and Modbus can bridge sensors and controllers while offering maths/linearisation for meaningful local indication. Using a consistent meter shortens integration and simplifies spares across programme rollouts. Front panel programming assists last minute adjustments onsite.

Relevant products:

Status DM3600U Panel Meter - DM3600U accepts RTD/TC/mA/voltage inputs, with optional RS 485 Modbus, relay outputs and analog retransmission. Maths and linearisation functions present clear values locally, while OPC options help SCADA integration. Its compact 1/8 DIN housing fits standard cutouts and simplifies panel design.
Key benefits:
- Universal inputs and retransmission for flexible edge integration
- RS 485 Modbus/OPC for straightforward BMS/SCADA connectivity
- Maths/linearisation for meaningful local indication
- Compact 1/8 DIN format to standardise panels

Application Selection Guide

Application	Recommended Technologies	Why It Helps
Signal isolation & conditioning	Status SEM1600 + SEM1000/SEM1020/SEM1200	Clean, isolated signals; scalable splitting to PLC/BMS
Local indication & batching	Status DM3600A	Front panel rate/totaliser; relays/Modbus for quick commissioning
Temperature on loops	PCT PT100 + Thermowells	Custom fit, 316SS; protected sensors for reliable measurement
RH/T in AHUs/cleanrooms	Status SEM710	Dual channel RH/T; duct/wall IP65; USB/NFC logging
Clamp on flow	Dynasonics TFX 5000	Non invasive; bidirectional; energy metering ready
Inline flow verification	LX Flow Turbine	Compact, accurate meter for pump/circuit checks
DP across filters/HXs	PCT Z2 Transmitter	0.1% accuracy; hygienic/industrial connections; IP66
Pressure regulation	Jordan Valve Mark 63/64	Sliding gate DP regulation; compact footprint
Gas mixing for test rigs	Fusion Flow MXM	Multi channel blending; web UI; data logging
Chemical dosing/metring	Longer WT3000 Micro Gear Pump	Precise low flow dosing with PLC interfaces
Commissioning & FAT/SAT	HydraPro Water Flow Pressure Test Kit	Portable verification without mains power
Data logging/communications	Status DM3600U	Universal input; retransmission; Modbus/OPC edge integration