The SOFREL LogUp is LACROIX's sealed, battery-powered cellular data logger for drinking water and
wastewater networks. It needs no power and no panel: it wakes, measures, logs, and sends — on a schedule, and at
once when a value crosses a threshold. ScadaBOSS brings every LogUp onto one map with trends, alarms and reports.
The logger
Up to 10 yearsinternal lithium battery, depending on log and send rates
LTE-M / NB-IoT4G LPWAN, nano SIM, internal or external antenna
IP684 m for 30 days, 2 m for 100 days
−20 to +70 °C190 × 185 × 126 mm · 0.9 kg
Packs (one hardware, features by licence)
Pack
Inputs (per LACROIX)
Typical use
202
2 counting digital inputs + 2 dry-contact inputs
Meters, rain gauges, float and fail contacts
222
The 202 inputs + 2 analog inputs, 4–20 mA
Levels and pressures — lift stations, tanks, boosters, PRVs, DMAs
M222
The 222 inputs + Modbus sensors
Water quality: chlorine, pH, conductivity
101 · M101
Entry packs — see LACROIX's datasheet
Single-measurement points
Packs can be upgraded remotely (101 → 202 or 222, M101 → M222). LACROIX's datasheet is the reference for exact input counts.
How the data reaches ScadaBOSS
1 · LogUplogs every 5–15 min; sends daily, or at once on a threshold
3 · ScadaBOSSreads LX CONNECT every 5 min with each sample's own time
4 · Peoplemap, trends, e-mail and push alarms, reports
What every site gets
A card on Fleet and a marker on the Map
Trends with no gaps, even on a once-a-day send
Alarms by e-mail and push, with delays and deadbands
A missed call-in alarm when a logger goes quiet (26 h)
Battery left and signal tracked, alarmed months ahead
Reports by day, week and month
Typical settings
Log every 5–15 minutes
Send once a day — the battery's best friend
Thresholds in the logger for anything urgent: it calls in at once
LX CONNECT shows the battery estimate as settings change
Signal better than −95 dBm is comfortable; worse, add an external antenna
ScadaBOSS · scadaboss.com/lacroix.html · sales@scadaboss.comLogger figures: LACROIX SOFREL LogUp datasheet (03-2026) and brochure (10-2025). LACROIX, SOFREL, LogUp and LX CONNECT are trademarks of LACROIX.
Application sheet · Wastewater
Lift stations
LACROIXSOFREL LogUp pack 222
Know a lift station is falling behind before it overflows: wet-well level every few minutes, a
high-level float as the hard backup, and the pump panel's fail contact — on a battery, with no tie-in to the
station's power or controls.
Inputs
LogUp input
Sensor
ScadaBOSS tag
In the logger
Analog 1 (4–20 mA)
Submersible level transducer, 2-wire loop-powered, e.g. 0–15 ft; hung above the pump volute, below pump-off
WetWell_Level_ft
Log 5 min · threshold at high-high → send at once
Dry contact 1
High-level float, N.O., closes rising — set about 6 in above lag-pump-on
HighFloat
Any change → send at once
Dry contact 2
Pump-fail or seal-fail relay from the pump panel, N.O.
PumpFail
Closed → send at once
Alarms we set in ScadaBOSS
Tag
Alarm
Set at
Means
WetWell_Level_ft
High-high · critical
the high-high elevation
Overflow is close — go now
WetWell_Level_ft
High · warning
lag-on + 0.5 ft, 60 s delay
Pumps are not keeping up
WetWell_Level_ft
Rate of rise
above the fastest normal rise
Inflow surge or a pump not pumping
Battery_DaysLeft · Reception_dBm
Low · info
180 days · −105 dBm
Plan the battery or antenna visit
On site
Kellems grip on the transducer cable; loop the spare outside the splash zone
Gas-tight splices — H₂S eats bare copper
Intrinsically safe barrier if the well is classified
Check the signal from inside the hatch; mount topside or add an antenna if weak
What you see
Level with the pump on / off levels drawn on the trend
The float and pump-fail state beside the level
Every high-level event in the alarm history, with time to clear
Wet-weather response next to the rain gauge
Why the float matters: the transducer is the operating picture; the float is the alarm that still
works if the transducer is ragged up. Wire both, even when the transducer seems enough.
ScadaBOSS · scadaboss.com/lacroix.html · sales@scadaboss.comSeconds-critical stations belong on a PLC; a LogUp suits stations where minutes are enough.
Application sheet · Drinking water
Tanks and standpipes
LACROIXSOFREL LogUp pack 222
Level for daily operation and for the fire reserve, a hatch alarm, and the fast drain that gives a
main break away — from a transmitter at the base tap, with no power at the tank.
Inputs
LogUp input
Sensor
ScadaBOSS tag
In the logger
Analog 1 (4–20 mA)
Pressure transmitter at the base tap, 2-wire (0.433 psi per ft; 0–30 psi ≈ 0–69 ft), scaled to feet
Tank_Level_ft
Log 15 min · low threshold at the fire reserve → send at once
Dry contact 1
Hatch switch, N.C., opens on entry
Intrusion
Open → send at once
Dry contact 2
Spare — a power-fail relay if there is a panel on site
PowerFail
Optional
Alarms we set in ScadaBOSS
Tag
Alarm
Set at
Means
Tank_Level_ft
Low-low · critical
the fire reserve
Fire protection at risk
Tank_Level_ft
Low · warning
normal minimum − 2 ft, 5 min delay
Supply is not keeping up
Tank_Level_ft
High · warning
overflow − 1 ft
Altitude valve or fill control fault
Tank_Level_ft
Rate of fall · critical
2–3 × the normal drain rate
The main-break signature
On site
Tap → isolation ball valve → snubber → transmitter
Mount in the valve vault above flood level
Heat-trace or insulate where it freezes — a frozen line reads flat, then fails
No base tap: a submersible transducer from the roof hatch
What you see
Level as a tank picture on the map, with the fill-on / fill-off levels
The daily draw and refill as a trend
The fastest drain of the week — the number the rate alarm is set from
Set the rate alarm after a week: a main break drains faster than any demand. Read the week's
fastest normal drain on the trend and set the alarm just above it.
ScadaBOSS · scadaboss.com/lacroix.html · sales@scadaboss.comLACROIX, SOFREL and LogUp are trademarks of LACROIX.
Application sheet · Drinking water
Booster stations and PRVs
LACROIXSOFREL LogUp pack 222
Pressure at two points at once — a booster's suction and discharge, or a pressure-reducing valve's
inlet and outlet — with alarms on loss of pressure. LACROIX lists two-point pressure monitoring among the LogUp's
core uses.
Booster station
Input
Sensor
Tag
Analog 1
Discharge transmitter, after the check valve, with a snubber
Discharge_psi
Analog 2
Suction transmitter, before the pumps
Suction_psi
Contact 1
Pump-run aux contact, N.O.
PumpRun
Contact 2
Phase-monitor relay, N.C. — a dead panel is an alarm
PowerFail
PRV vault
Input
Sensor
Tag
Analog 1
Inlet (high side) transmitter
Inlet_psi
Analog 2
Outlet (low side) transmitter
Outlet_psi
Contact 1
Vault flood float, optional
Flood
Contact 2
Vault lid switch, optional
Intrusion
Alarms we set in ScadaBOSS
Tag
Alarm
Set at
Means
Discharge_psi
Low-low · critical
minimum system pressure
Loss of pressure — check your state's boil-water rules
Discharge_psi
High · warning
relief setting − 10 psi
Dead-heading
Suction_psi
Low · critical
10 psi, 60 s delay
The pumps are about to pull a vacuum on the main
Outlet_psi
Low · warning
setpoint − 5 psi
PRV not holding — zone pressure dropping
Outlet_psi
High · warning
setpoint + 10 psi
PRV stuck open — high pressure in the zone
On site
A snubber on every pump-side tap — pulsation kills bare transmitters
Use a spare aux block for pump-run, never the coil terminals
Short pressure dips need a short log period: ask about the right setting for transients
What you see
Both pressures on one trend, the setpoint drawn on it
Pump running time and starts from the run contact
Every low-pressure event with its depth and length
ScadaBOSS · scadaboss.com/lacroix.html · sales@scadaboss.comA booster that must alarm in seconds belongs on a PLC; a LogUp suits minutes-scale awareness.
Application sheet · Water loss
District metering and leaks
LACROIXSOFREL LogUp pack 222
A zone's inflow every few minutes and its pressure, from the meter you already have. The number that
matters is the minimum night flow: when people sleep, what still flows is mostly leakage — and when it creeps
up, a leak is growing.
Inputs
LogUp input
Sensor
ScadaBOSS tag
Notes
Counting input 1
The zone meter's pulse output (e.g. 10 gal a pulse)
Flow_gpm · FlowTotal_gal
Flow worked out from pulses per period; the total for reports
Analog 1 (4–20 mA)
Zone pressure transmitter
Pressure_psi
Pressure management and burst detection
Counting input 2
A second meter, for a zone with two feeds
Flow2_gpm
Optional
—
Night flow: the lowest flow between 2 and 4 am
NightFlow_gpm
One figure a day — the leak indicator
Alarms we set in ScadaBOSS
Tag
Alarm
Set at
Means
NightFlow_gpm
High · warning
the zone's normal night flow + 15–20 %
A leak has grown — send the crew with the listening gear
Flow_gpm
High · critical
well above the daytime peak
A main break in the zone
Pressure_psi
Low · warning
the zone's minimum service pressure
Burst, or a supply problem
On site
Use the meter's pulse or open-collector output; note its gallons per pulse
Most meter vaults flood — the LogUp is IP68 to 4 m for 30 days
An external antenna on the lid if the vault is deep
What you see
The zone's daily curve, with its night minimum marked
Night flow as a month-long trend — a leak shows as a slope
Daily and monthly volumes for the water balance
In the demo: the South zone's night flow climbs from about 100 to over 140 gpm in a month while
the North zone stays flat — the alarm catches it long before anyone sees water on the street.
ScadaBOSS · scadaboss.com/lacroix.html · sales@scadaboss.comLACROIX lists DMA monitoring, average and night flow among the LogUp's uses (brochure 10-2025).
Application sheet · Revenue
Large customer and wholesale meters
LACROIXSOFREL LogUp pack 202
Read your biggest customers and wholesale connections every few minutes instead of once a month:
use by hour and by shift, a warning when a customer draws far more than usual, and clean totals for billing and
the water balance.
Inputs
LogUp input
Sensor
ScadaBOSS tag
Notes
Counting input 1
Customer meter pulse output
Flow_gpm · FlowTotal_gal
Total kept in step with the meter register
Counting input 2
Second meter (compound meters, or a second service)
Flow2_gpm
Optional
Dry contact 1
Backflow preventer or vault flood switch
Flood
Optional
Alarms we set in ScadaBOSS
Tag
Alarm
Set at
Means
Flow_gpm
High · info
above the customer's normal peak, 5 min delay
Unusual draw — a break on their side, or a process change
Flow_gpm
Low · info
no flow during working hours
Meter or register fault, or a shut-down customer
Where it pays
Food, beverage and other heavy industrial users
Wholesale sales to neighbouring systems — LACROIX lists billing and volume control between networks
Hospitals, schools, institutions on a large service
What you see
Use by hour, by day, by shift
A monthly report per customer, ready for billing
Wash-downs and process events as spikes on the trend
In the demo: the food plant runs two shifts — 145 gpm by day, a trickle at night, and the odd
clean-in-place wash-down that trips the high-use alarm.
ScadaBOSS · scadaboss.com/lacroix.html · sales@scadaboss.comLACROIX, SOFREL and LogUp are trademarks of LACROIX.
Application sheet · Stormwater and sewer
CSO outfalls and rainfall
LACROIXSOFREL LogUp packs 222 · 202
Know when, how long and roughly how much a combined sewer overflow spilled — and the rain that
caused it. LACROIX lists CSO detection with counts, durations and estimated volumes, and rain-gauge pulse
counting, among the LogUp's core uses.
About to spill — check the interceptor and the plant
RainRate_inhr
High · info
the intensity that usually starts a spill
Heads-up for the sewer crew
On site
The float at the crest proves a spill even if the level sensor fouls
Rain gauge level, clear of trees and roofs; clean the funnel each season
In the logger: a threshold at the crest so a spill is sent at once
What you see
Chamber level and rainfall on one trend
Every spill with its start, length and estimated volume
A monthly report for the permit — counts, minutes, gallons
Volumes are estimates. Gallons over the weir come from the chamber level and the weir's shape;
agree the method with your regulator before it goes in a report.
ScadaBOSS · scadaboss.com/lacroix.html · sales@scadaboss.comLACROIX, SOFREL and LogUp are trademarks of LACROIX.
Application sheet · Water quality
Chlorine, pH and conductivity
LACROIXSOFREL LogUp pack M222
Residual chlorine where it matters — a tank outlet, the far end of a zone, a dead end — read from a
Modbus water-quality sensor by an M-pack LogUp. LACROIX lists chlorine, pH and conductivity monitoring with
anomaly alerts among the LogUp's uses.
Inputs
LogUp input
Sensor
ScadaBOSS tag
Notes
Modbus
Free-chlorine sensor
Chlorine_mgL
The sensor's registers are set up in LX CONNECT
Modbus
pH sensor (often the same probe body)
pH
Modbus
Temperature or conductivity
Water_Temp_C · Conductivity_uS
As the sensor provides
Analog 1 (4–20 mA)
Or: any 4–20 mA analyser output
Chlorine_mgL
For analysers without Modbus
Alarms we set in ScadaBOSS
Tag
Alarm
Set at
Means
Chlorine_mgL
Low · critical
0.5 mg/L (or your target minimum), 5 min delay
Residual lost — check the feed and water age
Chlorine_mgL
High · warning
2.0 mg/L
Over-feed
pH
Low / high · warning
your treatment window
Treatment upset or a cross-connection
On site
Choose a sensor rated for battery operation and intermittent power-up
Sample line with a steady flow past the probe; drain to waste
Calibration and membrane changes follow the sensor maker's schedule
A Modbus sensor costs the battery more — check LX CONNECT's estimate
What you see
Residual beside the tank level: water age shows as a slow sag
A daily minimum and average for compliance records
Every low-residual event with its length
Ask before you buy a sensor: not every Modbus water-quality sensor suits a battery logger.
We will check the sensor against the LogUp with LACROIX before it is ordered.
ScadaBOSS · scadaboss.com/lacroix.html · sales@scadaboss.comLACROIX, SOFREL and LogUp are trademarks of LACROIX.