Chiller plant analog instrument monitoring
Chiller plants are lined with thermometers and pressure gauges on every header, pump and heat exchanger. Camera readers turn the important ones into trends, so the plant engineer can see temperature differences and pressure drops without adding BMS points.
THE PROBLEM
The plant room has the data on its dials
In hotels, hospitals, malls and district cooling plants, the chillers themselves often report to the BMS, but the hydronic side does not. Supply and return thermometers, pump suction and discharge gauges and strainer gauges are read on a round, if at all.
Those instruments answer the questions that drive efficiency. Is the chilled water delta-T collapsing because of a bypass? Is a strainer clogging and starving a pump? Is the condenser water approach rising because the tubes need cleaning?
Adding sensors means hot work on insulated pipe, new BMS points and an integrator's time. Reading the existing dials gives the engineer the trend first and helps decide where permanent sensors are worth it.
HOW WE SET IT UP
Placed for a wet, vibrating plant room
Instrument selection
We pick the gauges and thermometers that matter for delta-T, approach and pump health, usually across headers, chillers and condenser water lines.
Moisture and vibration first
Chilled water lines sweat and pumps vibrate. Cameras sit on brackets fixed to structure rather than to pump skids, with an enclosure suited to the condensation in the room.
Derived values
Pairs of readings become supply and return differences and strainer pressure drops, which are the numbers the plant engineer actually acts on.
Next to chiller data
Where chillers or VFDs speak Modbus, our Modbus gateway can bring those values into the same dashboard as the camera readings.
AT A GLANCE
Chiller plant instrument reading in brief
- What is measured
- Analog pressure and temperature instrument values on the hydronic side
- Hardware
- Vision AI optical meter reader per instrument, plastic, metal or custom enclosure
- Placement
- Brackets fixed to structure, chosen for condensation and vibration at the survey
- Power
- External power from the plant room, or battery for daily reads
- Data
- MQTT over TLS 1.2 to RIOD Live or your own server, with PDF and Excel exports
- Integration
- Can sit alongside Modbus data from chillers and drives
- Accuracy
- Confirmed on your instruments during the pilot
FAQ
Questions buyers ask us
How can I monitor chilled water delta-T without new sensors?
Read the existing supply and return thermometers with camera readers. The platform subtracts one from the other and trends the difference, which shows low delta-T problems.
Will condensation on the pipes affect the camera?
It can if the camera is placed badly. We choose the mounting position and enclosure for the moisture and vibration in your plant room during the survey.
Can this work with our BMS?
Yes. Readings live in RIOD Live or on your own server and can be passed to a BMS through an API. Where your chillers speak Modbus, a gateway can bring their data into the same view.
Which plant room instruments are worth reading?
Chilled and condenser water supply and return temperatures, pump differential pressure and strainer gauges are the usual starting set because they show efficiency and pump health.
Plant room full of dials?
Send us photos of the chiller plant instruments and the plant layout. We will suggest which ones to read and where to mount the cameras.