LoRaWAN® Pressure Sensor

A pressure transducer with a long-range radio and a battery. It screws onto a pipeline, a hydrant line or a vessel on a G1/4 thread, measures the pressure and sends it over LoRaWAN® kilometres to a gateway, with no signal cable and no SIM at the point. The MacSync LPS Xx does it with an SS316 transducer at ±0.05 % of full scale, three ranges to 10 MPa, low and high pressure alerts and a 19 Ah battery rated for years.

From the datasheet: working pressure 0–2.5 MPa (X1), 0–5 MPa (X2) or 0–10 MPa (X3), at ±0.05 % of full scale with a temperature effect of ±0.02 % FS per °C, a response time of 10 ms or better, 200 % overload and 300 % burst pressure, and a million-cycle rating, on an SS316 element with a G1/4 thread.

All three describe the LPS Xx in different trades. The sensing element is a transducer; a transmitter is a transducer with a conditioned output, classically 4–20 mA; a sensor is the everyday word. Process tenders write 'transmitter', engineers write 'transducer', and search uses 'sensor', so this page uses all three. For a tender, 'LoRaWAN battery-powered pressure sensor, SS316, G1/4, 0–2.5 MPa, ±0.05 % FS' describes it exactly.

The lowest range that covers the line's maximum including surge. Accuracy is a share of full scale, so a 6 bar distribution main on the 2.5 MPa X1 is read to about ±1.25 kPa, while the same line on the 10 MPa X3 is read to about ±5 kPa. The transducer tolerates 200 % overload for the water-hammer peak. Water networks, hydrant lines and pumping stations usually take the X1; hydraulics and medium-pressure process the X2; high-pressure pipelines, fire protection and oil and gas the X3.

1 MPa is 10 bar, 10.2 kg/cm², about 102 metres of water head and 145 psi. So the NBC 2016 minimum of 3.5 kg/cm² at the remotest hydrant is 0.34 MPa or 34 metres of head; a 6 bar main is 0.6 MPa or 61 metres; the X1's full scale of 2.5 MPa is 25 bar or 255 metres. The unit table on this page lists the common points.

The datasheet states the ranges, the SS316 wetted element and the lines it is suited to — water, oil tanks, gas tanks, hydraulic systems and process pipelines — but does not state the pressure reference (gauge or absolute) or media compatibility beyond the SS316 element. For a non-water medium or a vacuum application, ask for the engineering note before ordering.

A transmitter needs a loop supply and a cable to a PLC or a logger. The LPS Xx is the transducer and the radio in one unit on a battery, so the point needs no cable and no power. Where a line already carries a transmitter, the MacSync LX1 analog converter puts it on the same LoRaWAN network and powers the loop; where it does not, the LPS Xx is the one-box answer.

A burst or a closed valve shows as a pressure that drops and stays down; a growing leak shows as a slow fall over days at the same demand. The low-limit alert reports the drop within the sampling interval, and the periodic record shows the trend. Pinpointing a leak's location is done by comparing points across the zone, which is why a ring of sensors beats one.

For monitoring and alerts at many points, yes; for transient capture, no. The LPS Xx samples from 1 minute upward and reports limits and trends; a purpose-built pressure logger records at high rates for water-hammer and transient analysis at a few critical points. The usual design runs loggers at a few points and LoRaWAN sensors at many; the method table on this page sets them side by side.

As a device, yes: the JJM Technical Expert Committee's reference architecture places one pressure sensor at the tail end or low-pressure point of each network and recommends a LoRa first mile to a gateway, and AMRUT 2.0 evaluates NRW reduction through DMAs where a pressure point sits beside the bulk meter. The LPS Xx battery variant reads that tail-end pressure for years without power. Macnman claims no conformity, empanelment or approval under either programme; the scheme's engineer confirms the specification.

The CPHEEO Manual on Water Supply and Treatment sets the minimum residual pressure for a scheme at the consumer, in metres of head; the figure depends on the scheme's design and the manual's edition, so take it from the manual rather than from this page. Whatever that figure is, it becomes the low limit on the tail-end sensor, and the sensor reports within the sampling interval when the line falls below it.

Yes: residual pressure on a hydrant ring main or riser, logged continuously, with a low-limit alert the moment the line loses head, so a fault becomes a work order before the inspection. The X1 range covers hydrant lines; Macnman makes no claim of conformity to any fire-code instrument requirement, so check the specification where one applies.

Through a controller on the same network, yes. A MacSet LX1 starts or stops the pump or closes a valve on the rule your platform sends it, and the MacTalk variants talk device to device to a MacSet with no gateway on site, so a pressure drop can stop a pump on a site with no network at all.

The 19 Ah battery variants are rated about 2 years at 5-minute reports, 4 years at 15-minute reports and 7 or more years at hourly reports (datasheet estimates); event reporting during a fault adds uplinks. The DC variants run from 9–36 V at the point. Battery level is sent in every uplink.

The transducer goes on the tapping; the node mounts on the chamber wall or a post above any flooding level with the supplied clip and screws, joined by the cable, with the optional IP68 cable extender where the node must sit further away. The datasheet does not state the standard cable length; tell us the chamber and we confirm what ships.

The node is IP65 with an IP67 option and rated from −40 to +80 °C; the transducer is rated IP65. Mount the node above the water line, and for a deep chamber with a metal lid either bring the node above ground on the cable extender or serve the chamber with an indoor gateway nearby; the Maya app's Ping confirms the link before the lid closes.

The datasheet publishes the transducer's accuracy and temperature effect; it does not publish a calibration procedure, interval or certificate, and this page does not claim one. The practical check is a comparison against the line gauge at commissioning and at each inspection, recorded with the data. Where a tender requires a traceable certificate, ask before quoting.

Kilometres, depending on terrain, chambers and antenna height. The node transmits at 23 dBm with −137 dBm sensitivity on LoRaWAN®; a MacLink Gen-2 gateway on a water-works roof or a plant building typically covers a zone, a ring main or a site. The coverage calculator gives a first estimate and the Maya app's Ping test confirms each point.

On a distribution zone: the inlet, the critical (lowest-pressure) point and the tail ends, then one per rising main and pumping station; on a hydrant system: one per ring main section; in a plant: one per line that matters. A ring of cheap points beats one expensive logger for finding bursts; a pilot of three or four points on the zone that behaves worst settles the count.

Yes. The LPS Xx joins any LoRaWAN® v1.0.4 network server — ChirpStack, The Things Network, Orbiwise, Netmore, MQTT platforms or a private LNS — by OTAA with pre-loaded keys, and the readings reach your water SCADA, plant SCADA, ICCC or dashboard over MQTT or HTTPS. There is no mandatory Macnman cloud and no subscription.

IN865 for India, plus RU864, EU868, US915 and AU915, set when ordering. LoRaWAN in India uses the delicensed 865–867 MHz band, so a utility, a plant or a campus runs its own gateway without a spectrum licence; the device is WPC compliant and RoHS conforming.

The LPS Xx is a pressure transducer to 10 MPa for lines and vessels. The LPS X7 is a hydrostatic level sensor reading −10 to +10 kPa — about a metre of water column — that sits in a small tank, a dispenser or a shallow vessel to report its level. For level without contact, the MacRay LUS X1 ultrasonic sensor reads 3–450 cm from above.

The datasheet lists gas tanks among the suited applications and the X2 and X3 ranges cover receivers and gas lines; the wetted element is SS316. The pressure reference and media compatibility beyond that are not stated, so for a specific gas or a vacuum application ask for the engineering note.

The transducer is rated for 200 % overload, 300 % burst pressure and a million cycles, which covers pump cycling and water-hammer peaks within its range; the node is IP65 with an IP67 option and rated from −40 to +80 °C. Mount the node above the water line and choose the range that covers the surge.

The pressure reading, event flags on threshold crossings and the battery level, in an AES-128 encrypted LoRaWAN® uplink, periodic or on an event. Decoding is documented with the product; tell us your network server and we send the decoder for it.

The datasheet does not state a stored-record count, and this page does not claim one. The event and periodic reporting are described; if buffering during a gateway outage matters for your record, ask before ordering and we confirm the current firmware's behaviour in writing.

That is an earlier generation of the product. The MacSync LPS Xx on this page is the current datasheet: SS316 transducer, three ranges to 10 MPa, ±0.05 % FS, 19 Ah battery or 9–36 V DC. Marketplace and reseller listings that still show the older figures or prices are not maintained by Macnman; the documentation site and this page are the reference.

The data is yours. The sensor sends to your own network server and from there to the SCADA, ICCC or dashboard you choose, over MQTT or HTTPS. Macnman supplies the hardware, the documentation and the decoder, not a mandatory cloud.

Screw the G1/4 transducer onto the tee, test point or isolation valve with the sealing the line uses; mount the node above the water line with the supplied clip and screws; the DC variant wires to the site's 9–36 V supply. Pair over Bluetooth with the Maya app to set the intervals, the pressure limits and the LoRaWAN class, read the live pressure beside the gauge, run a Ping to confirm the gateway, and the device joins by OTAA. No trench, no laptop.

The MacSync LPS Xx node with its transducer, a mounting clip, mounting screws, the user manual and the warranty card. The IP68 cable extender and a power adapter are optional accessories ordered separately.

Yes. The MacSync LPS Xx is designed and manufactured in Pune, Maharashtra. It is WPC compliant for the IN865 band and conforms to RoHS; the datasheet states both. No calibration certificate and no fire-code or utility-standard conformity is claimed.

Four lines, and the sensor is only one: the number of points, which depends on the zones and lines that matter; battery or DC at each point; the gateway, usually one per site plus one for a far corner or a deep chamber; and the integration into the SCADA or platform you run. To quote, send the list of points with their normal and maximum pressure and media, whether a G1/4 tapping exists, whether there is power at each point, whether a LoRaWAN gateway and network server already exist, whether a controller must act on the pressure, and the platform the data should reach. With that we confirm the ranges, the variants, the count and the gateway position.

Yes, and it is the recommended way in: three or four LPS Xx sensors on the zone or the line that behaves worst, one gateway, your own network server, through one season, with the line gauges read beside them. The pilot kit on this site is that set; the rest of the points join the same gateway afterwards.