Why Hurtwood?

Fast Deployment

Our retrofit solutions are designed for quick, seamless installation, allowing you to upgrade your system without downtime or complex processes.

Easy Troubleshooting

Quickly diagnose and resolve issues with ease using the Satrofit Tool, which provides real-time access to system data, enabling technicians to troubleshoot and service systems without needing access to the master controller.

Design

Our scalable solutions allow for modular integration, ensuring compatibility with a wide range of BMS systems, old or new.

Efficiency

Improve energy efficiency and reduce operational costs with our innovative control solutions, designed to boost building performance.

Satrofit I/O Cards

Satrofit AUNC 16UI & 16UO IO cards plug directly into the BAS and Sigma UNC 696 or 796 racks and read all the pre-existing Satchwell sensors. The output cards can drive the Satchwell 8 latching relay cards.

Features:

  • The input cards have selectable digital, current and voltage inputs with status LEDs
  • Thermistors can be measured in two ranges – giving a high level of accuracy from 300 Ohms to 100K Ohms.
  • The input cards have 10 bit A/D converters and are individually calibrated to 0.25% accuracy
  • The flexible analogue outputs have up to 30mA of current and 4 off 0-20mA current regulated outputs
  • The cards can be directly connected to with the laptop based Satrofit tool allowing the sensors and actuators to be set-up and serviced by technicians who don’t have access to the master controller, for example, during pre-commissioning


SRC-AUNC-16 UO

Provides 16 outputs, configurable as voltage outputs in the range of 0 – 10V or “latching relay” digital outputs. Four of the outputs can be configured for current control, ranging from 0 – 20mA.


SRC-AUNC-16 DI/TI

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SRC-AUNC-16 UI

Provides 16 inputs, configurable for voltage (0 – 10V), current (0 – 20mA), or resistance (PTC and NTC thermistors) measurements in two ranges for maximum accuracy

Modbus Connector Board

Allows you to connect multiple Satrofit cards on one ModBus Board.

Satrofit Tool

Enables existing analogue and digital outputs to be controlled by a modern, web-based master controller over a Modbus RS 485 network.

Retrofit – the Class 57 Analogy

The photo would appear to be of a modern railway locomotive, regularly used to haul express passenger train, actually the Cornish Riviera sleeper train to Penzance from London’s Paddington station.

The locomotive in question through was actually built in the early 1960s, one of the ubiquitous Class 47s, and would have been hauling express trains on Britain’s railways while steam locomotives where still a common sight.

What has allowed this iconic locomotive to stay in front line revenue earning service for many years yet? Put simply, a retrofit solution.

The original Sulzer diesel, a large 16 cylinder medium speed 4 stroke diesel, very much of 1960s technology, was removed and replaced with a modern North American built 2 stroke V12 engine coupled to a robust and reliable alternator rather than the original DC generator and the auxiliary systems renewed.

The result, a modern, efficient and powerful locomotive capable of a wide variety of duties for a third of the cost of a new locomotive.

Retrofit IO systems share the same philosophy, pre-existing and robust panel systems and their field wiring are analogous to the body shell and running gear of the original Class 47, which with care, has an almost indefinite life, and can be quickly and easily up graded to a modern and powerful BMS using a retrofit solution, speeding the process and reducing the cost in line with what an organisation can afford.

So just as rail operators have been able to improve performance and reliability and reduce their operating costs, building operators can equip themselves with a modern and reliable BMS for substantially less than they would have been expecting to pay via the old fashioned route of a complete strip-out and starting again.

Portfolio

Take a look at some of out current projects where we have implimented Satrofit cards: