Milesight
Smart home kit compressed air and fluids LoRaWAN Milesight, from 2 to 4 compressors: network pressure, compressor current draw, discharge temperature and condensate leaks
Smart home kit compressed air and fluids LoRaWAN Milesight, from 2 to 4 compressors: network pressure, compressor current draw, discharge temperature and condensate leaks
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€2,205.74
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Utility kit · compressor room
Compressed air and fluids kit, from 2 to 4 compressors
Pressure on the receiver, on the discharge line and on two branches of the network, three-phase current and running hours of two compressors, discharge temperature, water alarm under the condensate drains. Comparing the pressure while the compressors are stopped shows how much the network is losing. LoRaWAN radio transmission, data from PC and from the app.
Milesight devices
Battery-powered pressure sensors
Clamps with no interruption of the line
Alerts on your smartphone
Customisable kits. This is one of the Milesight LoRaWAN kits in the Smart Home section. For different systems, made-to-measure kits or custom automations, write to us from the contacts section.
Several sizes. The figures, the diagram and the table on this page describe the “2 compressors, 4 pressure points” size. The other sizes are selected at the top and are listed further down, under “Available sizes”.
4 pressure pointsReceiver, discharge line and two branches: from 0 to 16 bar, accuracy ±0.5% of full scale.
2 compressorsCurrent on the three phases up to 500A: hours on load, off load and stopped, estimated consumption.
Discharge temperatureTwo PT100 probes up to 200 °C, in a thermowell or in contact with the pipe.
CondensateTwo floor water sensors under the drains, the dryer or the receiver.
What it does
- The four pressure sensors record the trend on the receiver, on the discharge line and on two branches of the network with one reading every 10 minutes, or more frequently if needed: you see the pressure drops between the compressor room and the departments and the hours when the network struggles.
- The two current meters read the three phases of each compressor. From the current draw you can tell running on load, running off load and stopped, count the hours and estimate the energy consumed.
- With the plant stopped and the compressors switched off, the speed at which the pressure falls measures the leaks in the network. With the two sensors on the branches, by closing the isolating valves, you find out which branch is losing the most.
- The PT100 probes follow the discharge temperature of each compressor: a temperature that rises at the same load points to a dirty radiator, oil due for a change or insufficient ventilation of the room.
- The water sensors report condensate on the floor under the drains, the dryer and the receiver: a drain that leaks, a clogged outlet that overflows.
- Thresholds and notifications on your smartphone for minimum and maximum pressure, discharge temperature and the presence of water; history and charts from a PC.
For a different number of compressors or pressure points, water or other fluid circuits, lines above 16 bar, additional sensors, or if there is no internet connection in the compressor room and a 4G gateway is needed: tell us the characteristics of your system from the contacts section and we will propose the correct configuration together with the quotation.
1Industrial LoRaWAN gateway on a DIN rail, in a cabinet near the compressor room, with the magnetic-base antenna outside the cabinet and connected to the company network.
2Pressure sensor with G 1/2" threaded connection and wall-mounted transmitter body. Four in the kit: receiver, discharge line and two branches.
3Three-phase current meter with three openable clamps, in the cabinet of each compressor. Two in the kit.
4Temperature sensor with PT100 probe on the discharge line of each compressor, in a thermowell or in contact with the pipe. Two in the kit.
5Spot water sensor, with the probe on the floor under the condensate drains. Two in the kit.
How it is installed
Gateway. On a 35 mm DIN rail in a cabinet near the compressor room, or on the wall. Powered via PoE from the network cable or via USB-C 5V with the supplied power adapter; it has no terminals for 24V. The magnetic-base antenna goes outside the metal cabinet, vertically on a metal surface, high up and away from walls and obstacles. IP30, operation from -20 to +60 °C. Connection to the company network with an Ethernet cable or Wi-Fi.
Pressure sensors. Male G 1/2" threaded connection on a port of the receiver or of the pipework, on a straight run, away from bends, branches, valves and from the compressor discharge outlet; in a spot with little vibration. The transducer works between -10 and +70 °C: on the discharge line it goes after the aftercooler, not on the hot air. With pulsating pressure, as on piston compressors, a snubber is fitted. 1.5 m cable up to the transmitter body, fixed vertically to the wall or to a pipe with a clamp.
Current meters. In the compressor cabinet, on the supply line: one clamp for each phase, closed until it clicks around a single conductor, never phase and neutral together. The clamp of phase A must always be connected, because it powers the device. Conductors up to 36.5 mm in diameter fit; clamp cables 1 m long. The transmitter body is fixed inside the cabinet with a cable tie. It is powered by the current it measures, from 5A upwards.
Temperature probes and water sensors. PT100 probe, 4 mm in diameter and 30 mm long, inserted in a half-inch thermowell on the discharge line; if there is no threaded port, in contact with the pipe with a clamp, under the insulation. 1.5 m cable; the transmitter body goes on the wall, away from hot surfaces, where the air stays below 70 °C. Water sensor: floor probe fixed with screws or double-sided tape at the point where the condensate collects first, with the two metal contacts facing that point and not touching metal parts; alarm with 5 mm of liquid. Transmitter body on the wall, 1.5 m cable.
Configuration. Pressure, temperature and water sensors: via NFC with a smartphone and the manufacturer's free app, for reading intervals, units of measurement, thresholds and names of the measuring points. The current meters have no NFC: they are configured from a PC with a USB-C cable and the manufacturer's free software. The gateway is configured from a browser.
Documentation included. Written installation guide with recommended tapping points, distances, position of the clamps in the cabinet, position of the antenna and switch-on sequence, plus the initial configuration of intervals and thresholds based on the working pressure and the compressors indicated when ordering.
What is in the kit
| Qty | Device | What it is for |
|---|---|---|
| 1 | Industrial LoRaWAN gateway for DIN rail | Collects the sensor data and forwards it to the platform. Ethernet, Wi-Fi, PoE. |
| 4 | Pressure sensor for pipework, 0-16 bar, G 1/2" connection | Pressure on the receiver, on the discharge line and on two branches. 316L stainless steel transducer, IP67 transmitter body. |
| 2 | Three-phase current meter with three clamps, up to 500A | Current draw, hours on load and off load, estimated consumption of each compressor. Self-powered. |
| 2 | Temperature sensor with PT100 probe, from -50 to +200 °C, IP67 | Discharge temperature of each compressor. Accuracy ±0.6 °C. |
| 2 | Spot water sensor, IP67 | Condensate alarm on the floor under the drains, the dryer or the receiver. |
Top-quality Milesight devices with the manufacturer's warranty. Batteries included in the pressure, temperature and water sensors, with a declared battery life of up to 10 years with one reading every 10 minutes; the current meters are powered by the conductor they measure, the gateway from the mains.
Available sizes
The size is selected at the top, together with the version and the connectivity. The diagram, the photo and the table above show the “2 compressors, 4 pressure points” size; with the other sizes only the quantities of the devices listed below change, the rest of the kit is identical.
- 2 compressors, 4 pressure points: 4 pressure sensors, 2 three-phase current meters, 2 PT100 temperature sensors, 2 spot leak sensors
- 4 compressors, 6 pressure points: 6 pressure sensors, 4 three-phase current meters, 4 PT100 temperature sensors, 4 spot leak sensors
In the complete kit the installation material linked to these devices (brackets, thermowells, clips, cables, boxes) follows the size selected. For a different size, write to us from the contacts section.
Available connectivity options
- Customer network (Ethernet/Wi-Fi): 1 DIN-rail LoRaWAN gateway
- Built-in 4G: 1 DIN-rail LoRaWAN gateway with 4G. SIM not included; independent of the company network
In the complete kit the material for the gateway (network cable, pole, PoE injector) changes accordingly. The SIM for the 4G versions is not included.
Choose the version
Devices only
The price updates at the top when you select version, connectivity and size.
- The Milesight devices in the table
- Installation guide and initial configuration
- For those who already have fittings, thermowells and cabinet material
Recommended
Complete kit with installation materials
The price updates at the top when you select version, connectivity and size.
- Everything in the basic version
- 4 gauge cocks with PTFE tape, to isolate and remove the pressure sensors without shutting down the network
- 2 half-inch thermowells, 100 mm long, and clamps for fixing the probes in contact
- DIN rail with terminal block, magnetic-base antenna with 3 m of cable and Ethernet cable
- Stainless steel clamps to fix the transmitter bodies to pipes and brackets
- Wall plugs, screws, double-sided tape, numbered labels for lines and measuring points, installation diagram
Before you order
Is an internet connection needed in the compressor room?
It is needed at the point where the gateway is installed: a socket of the company network or Wi-Fi coverage. The sensors do not use Wi-Fi, they talk to the gateway by radio, and the gateway can also sit in a cabinet outside the room. If there is no network, or you do not want to connect the system to the company network, the version with a 4G gateway is available, which requires a data SIM (not included, any operator, traffic below 1 GB per month). It is selected when ordering.
How are air leaks identified?
From the pressure chart during the hours when the plant is stopped. With the compressors off, which the current meter confirms, and no consumption, the pressure should stay almost constant: the speed at which it falls gives the measure of the leaks, and repeating the test after the work tells you how much you have recovered. By isolating the branches you identify the one that leaks the most. The kit quantifies the loss; the exact point along the pipework is then searched for with the usual methods.
Is it suitable for my compressors and my network pressure?
The pressure sensors cover from 0 to 16 bar, so industrial networks at 7-13 bar; for higher pressures, write to us. The current meter accepts up to 500A per phase and conductors up to 36.5 mm, in alternating current at 50-60Hz: on variable-speed compressors it goes on the supply line, not on the inverter output. It is powered by the current it measures from 5A upwards; with the compressor switched off it keeps transmitting for about 12 hours, then stops and restarts by itself. If you want the data during long shutdowns as well, it can be powered at 5V from the USB-C port.
Does the plant have to be shut down? Is an electrician needed?
The clamps close around the conductors without disconnecting them, but you work inside the compressor cabinet: qualified electrical personnel are required. For the pressure sensors a free threaded port with no pressure is needed: if the port already has an isolating valve nothing has to be stopped, otherwise a shutdown is used. With the cocks in the complete kit, later removals are done with the network under pressure. The thermowell for the temperature probe requires a socket on the discharge line; alternatively the probe is fixed in contact with the pipe, with a reading less faithful than the one in a thermowell.
How far does the signal reach?
The manufacturer declares up to 2 km in an urban area and 15 km in open field for this gateway; inside a plant, walls, steelwork and machines count. A compressor room and the network branches in the same building are covered by one gateway in a central position with the antenna outside the cabinet. The current meters work inside metal cabinets, which attenuate the signal: transmission is checked during installation, before closing up. For measuring points in distant buildings a second gateway is added.
I have more compressors or more branches to monitor
Among the product options you will find the size with 4 compressors and 6 pressure points. The kit is in any case configured on your system: one current meter and one probe per compressor, one pressure sensor for each branch you want to follow; the gateway and the platform stay the same. The same scheme applies to cooling water circuits and to other utilities. Write to us from the contacts section with the network layout, the working pressure and the power of the compressors: we will send you the composition and the quotation of the adapted kit.
Battery life
Pressure and temperature sensors: 19,000mAh lithium battery, declared life of 10 years with one reading every 10 minutes at 25 °C; shorter intervals and very hot rooms reduce it. Water sensors: up to 10 years. The batteries are replaceable and the charge level is visible in the app. The current meters have no batteries.
Where is the data viewed and are there any fees?
On the manufacturer's app and portal, from smartphone and PC, with charts, thresholds and notifications; no fee for basic use. If you have a supervision system, an energy management software or an ERP, the gateway can also send the data to that system (MQTT or HTTP): the configuration is included.
What happens if the internet goes down?
The plant is unaffected: the kit measures and controls nothing. The pressure and temperature sensors keep the readings in their internal memory and retransmit them when the line is restored. Notifications on your smartphone do not go out until the line is back.
Do they cope with the heat, the oil and the humidity of the compressor room?
The transmitter bodies of the pressure, temperature and water sensors are IP67 and work from -30 to +70 °C; the pressure transducer is IP65. The gateway and the current meters are IP30 and go inside the cabinets: gateway from -20 to +60 °C, meters up to +70 °C, clamps up to +55 °C. The water sensor detects conductive liquids: condensate is not very conductive, so during installation a test is carried out by wetting the probe with condensate from the system.
What is not included
- Compressors, dryer, receiver, drains and pipework: these are the ones in your system
- The threaded ports on the system, any reducers needed to adapt them to the G 1/2" connection and the pulsation snubbers
- The data SIM, in the version with a 4G gateway
- The PC and the USB-C cable for configuring the current meters, and the mounting inside the cabinets
- In the "devices only" version: cocks, thermowells, cabinet material, clamps and small fittings
Shipping
Shipping: free to Italy and throughout the EU. Delivery in 10-20 working days.