Poultry house monitoring without a new controller
How to add sensors, history and phone alerts to a house that already has a climate controller, what an independent layer adds, and what to ask a vendor.
Choosing a system 5 min read
The house has a climate controller that has run it for years. It is paid for, the team knows it, and it does its job: fans, heaters, inlets and cooling. What it does not do is tell you, on your phone at night, what the ammonia is at bird level, whether fan four is turning, or how much feed is left in the silo.
Replacing the controller to get those answers is expensive and disruptive, and often unnecessary. The alternative is to add a monitoring layer beside it. This guide covers how that works, what it adds, and what to ask before buying one.
Two jobs, two systems
A climate controller has one job: to run the house. It reads its own temperature sensors and switches equipment in response. It is designed to act.
Monitoring has a different job: to observe the house and tell people what is happening. It is designed to measure, record and alert.
Keeping the two separate has practical advantages:
- Nothing about how the house is run changes. The controller keeps its settings, its wiring and its sensors. The team does not have to learn a new way of running the house.
- The monitoring is independent. If the controller has a fault, or loses power, a separate system can still see the consequences and report them. A controller watching itself cannot.
- You choose what to measure. The monitoring layer carries the readings the controller does not have, such as ammonia, CO2, fan current and silo level, without asking the controller to do something it was not built for.
What an independent layer adds
Readings at bird level. Controller sensors are placed to run ventilation. Air quality limits in welfare standards are written at bird height; EU Council Directive 2007/43/EC, for example, uses ammonia at 20 ppm and CO2 at 3000 ppm measured at the level of the chickens’ heads for higher stocking densities. Measuring there needs its own sensors. See safe ammonia levels in a poultry house.
Proof that equipment is running. The controller knows what it switched on. A current sensor on each fan shows what is turning. See what happens when ventilation fails.
The things around the house. Feed silos, water supply and the power itself sit outside the controller’s world. A monitoring layer brings them onto the same screen.
History and a record. A curve of every reading, per house, for the whole flock, available to the manager, the veterinarian and the buyer.
Alerts that reach people. On every phone that needs them, repeated until someone takes responsibility.
How it is installed
A typical retrofit looks like this:
- Sensors in the house, mounted at the height they need to be, wired to a small controller on the wall. No connection to the climate controller.
- Current sensors on the fan supply cables. They clip around a conductor, so nothing is disconnected and the circuit is not interrupted.
- A level sensor on each silo roof.
- Cellular communication from each house, so no network has to be run across the farm.
The house keeps operating throughout. The work is closer to adding a sensor network than to replacing a control system.
Questions to ask any vendor
Whatever system you look at, these questions separate one that will hold up at two in the morning from one that looks good in a demonstration.
What happens when the power goes? Does the monitoring equipment have its own battery, and does it need a router or a phone line that will also go down?
What happens when the signal drops? Are readings stored and sent later, or lost?
Do alerts repeat? A single notification is easy to miss. Ask whether an alert keeps coming until someone acknowledges it, and whether you are told when the reading recovers.
How does it report a broken sensor? A disconnected or failed sensor should appear as a fault, not as a plausible reading or a flat line that looks normal.
Who can get alerts? Owner, manager, night staff and service technician may all need them.
Can I add to it later? Another house, another sensor type, another silo, without replacing what is already there.
Can I get my data out? In a spreadsheet you can open, for audits, buyers and your own analysis.
It also helps to understand the broad types on offer. Some systems are extensions of a controller and are strongest when you are buying that controller. Some are general sensor dashboards built for many industries and configured for poultry. Some are built around the poultry house as a whole, with independent sensors and equipment checks. Each can be the right answer; the questions above tell you which one you are looking at.
How Henlytics does it
Henlytics is built to sit beside the controller you already have. Each house gets a Genesis controller that reads industrial sensors for ammonia, CO2, temperature and humidity, a current sensor on each fan, and a radar level sensor on each silo. The controller runs on its own rechargeable battery and reports over the cellular network. Every house appears on one dashboard, alerts repeat until someone acknowledges them, and a sensor fault is reported as a fault.
See how Henlytics works for the installation in more detail.