OEM LoRaWAN Ammonia Sensor Manufacturer for Livestock Farms

2026-09-14 09:41:45 · Views 39

OEM LoRaWAN Ammonia Sensor Manufacturer for Livestock Farms

Livestock buildings can contain changing concentrations of ammonia generated by manure, litter, urine, moisture and microbial activity. Conditions vary with animal density, ventilation, temperature, humidity, bedding management and cleaning practices.

Periodic manual measurements provide only a snapshot. They may not reveal what happens overnight, during changing weather, after ventilation adjustments or in parts of a building with poor air movement.

A LoRaWAN ammonia sensor measures airborne NH₃ and sends readings to a gateway. Farm managers can use the resulting data to review trends, configure alerts and evaluate ventilation or litter-management decisions.

For agricultural equipment brands and system integrators, an OEM LoRaWAN ammonia sensor can be customized around the selected sensing element, measurement range, enclosure airflow, installation environment, calibration method, power system and software platform.

Reliable NH₃ monitoring requires more than adding a gas sensor to a LoRaWAN radio. Dust, humidity, cross-sensitivity, sensor aging, placement and maintenance all affect the quality of the measurement.

What Is a LoRaWAN Ammonia Sensor?

A LoRaWAN ammonia sensor is a wireless IoT device that measures ammonia concentration in the surrounding air and transmits the data through a LoRaWAN network.

A typical system architecture is:

NH₃ Sensor → LoRaWAN Gateway → Network Server → Farm Platform → Alert or Ventilation System

Depending on the design, the device may report:

Ammonia concentration
Temperature
Relative humidity
Gas-sensor status
Warning or alarm state
Rate of concentration change
Minimum and maximum values
Battery or supply voltage
Calibration status
Sensor-life indication
Communication status
Firmware version

The device can measure more frequently than it transmits, allowing the firmware to calculate local averages and detect sustained changes without sending every raw sample.

Why Monitor Ammonia in Livestock Buildings?

Ammonia concentration can change substantially throughout the day.

Important influences include:

Animal population and age
Manure accumulation
Litter moisture
Ventilation rate
Air circulation
Building temperature
Relative humidity
Feeding and watering systems
Seasonal weather
Cleaning activities
Drainage
Floor and manure-management design

Continuous trend data can help operators identify when and where conditions are deteriorating.

The monitoring platform may support:

Comparison between buildings
Comparison between ventilation zones
Overnight condition analysis
Evaluation before and after cleaning
Identification of recurring high-reading periods
Maintenance of fans and air inlets
Environmental reporting
Sensor and gateway supervision

The system should support farm management decisions, but it should not automatically be presented as a certified occupational-safety instrument.

Ammonia Gas Versus Ammonium in Water

Ammonia and ammonium measurements are related chemically but require different sensor systems.

Airborne Ammonia

A livestock-building NH₃ sensor measures ammonia gas in air, normally reported as a gas concentration.

Its sensing element needs exposure to representative air.

Dissolved Ammonia and Ammonium

Aquaculture, wastewater and liquid-manure applications may measure dissolved ammonia or ammonium in water.

These systems may require:

Ion-selective electrodes
pH measurement
Temperature compensation
Water-sampling systems
Immersion probes
Regular cleaning
Liquid calibration standards

A gas sensor designed for barn air should not be placed in water, and a water-quality probe is not a substitute for an airborne NH₃ detector.

The intended medium must be confirmed before product development.

Common Livestock Applications

Poultry Houses

Poultry buildings can experience rapidly changing environmental conditions because of animal density, litter condition, ventilation and heating schedules.

A wireless monitoring system may collect:

Ammonia
Carbon dioxide
Temperature
Relative humidity
Air pressure
Light
Ventilation status

The platform can compare the measurements with fan operation and outdoor conditions.

Sensor placement is particularly important because readings close to the floor, near an air inlet or directly beside a fan may differ significantly.

Pig Barns

Ammonia conditions in pig housing can be influenced by manure channels, floor design, animal activity and ventilation.

Multiple LoRaWAN sensors can help compare:

Pens
Rooms
Ventilation zones
Manure areas
Different building sections
Animal-production stages

A single sensor near the control panel may not represent conditions throughout a large barn.

Cattle Barns

Dairy and beef facilities may use NH₃ monitoring in enclosed or partly enclosed buildings.

Applications can include:

Cubicle barns
Calf housing
Milking areas
Manure-storage zones
Holding areas
Winter housing
Equipment rooms associated with manure handling

Open-sided buildings can have highly variable airflow. A site pilot is necessary to determine whether fixed sensors provide representative information.

Manure Treatment and Storage Areas

Ammonia monitoring may also be considered around:

Manure pits
Composting areas
Processing equipment
Waste-transfer points
Ventilated storage buildings

These environments may contain additional gases and potentially hazardous conditions. The complete gas-detection and electrical-safety requirements must be evaluated before selecting an ordinary agricultural sensor.

Ammonia Sensor Technologies

Several sensing methods can be considered for an OEM product.

Electrochemical Ammonia Sensor

An electrochemical sensor generates an electrical signal through a chemical reaction involving the target gas.

Potential advantages include:

Direct response to gas concentration
Suitability for relatively low concentration ranges
Compact sensor construction
Low continuous power requirement in some designs
Availability in replaceable modules

Important considerations include:

Limited service life
Temperature influence
Humidity influence
Cross-sensitivity
Baseline drift
Storage conditions
Sensor poisoning
Required calibration
Response and recovery time

An electrochemical cell should be selected from the target range and environmental conditions rather than from price alone.

Metal-Oxide Semiconductor Sensor

A metal-oxide semiconductor sensor changes electrical characteristics when exposed to certain gases.

Potential advantages can include:

Robust sensing elements
Broad availability
Long-term monitoring capability
Detection of changes in air composition

Potential limitations include:

Heater power consumption
Broad response to multiple gases
Humidity sensitivity
Long warm-up requirements
Baseline variation
Need for application-specific algorithms

A low-cost metal-oxide signal should not automatically be described as a selective ammonia measurement. The complete module and compensation method must be validated.

Optical and Specialized Measurement Methods

Specialized optical, photoacoustic or spectroscopic instruments may provide additional selectivity or performance for research and regulatory applications.

They may also require:

Greater power
Larger enclosures
Pumps or controlled airflow
Optical maintenance
Higher component cost
More complex calibration

The required measurement quality should determine the technology. A farm-management sensor and a laboratory reference analyzer may serve different purposes.

Cross-Sensitivity Is a Procurement Issue

Gas sensors may respond partly to gases other than ammonia.

Possible interfering conditions depend on the selected sensing element and may include:

Hydrogen sulfide
Cleaning chemicals
Alcohols
Volatile organic compounds
Disinfectants
Exhaust gases
Other agricultural emissions

The OEM buyer should request:

Cross-sensitivity information
Target-gas range
Response characteristics
Temperature and humidity limits
Expected sensor life
Calibration procedure
Storage requirements
Replacement availability

Cleaning products and disinfection procedures used on the farm should be included in prototype testing.

Temperature and Humidity Compensation

Livestock buildings may experience substantial temperature and humidity changes.

These changes can affect:

Sensor baseline
Sensitivity
Response time
Condensation risk
Electronic components
Battery performance
Enclosure airflow

A custom device can measure temperature and humidity close to the gas-sensing element and apply approved compensation data.

The platform should retain the raw environmental measurements where they are needed for later analysis.

A dedicated LoRaWAN industrial temperature sensor may also be used when temperatures must be measured at separate farm or equipment locations.

Dust, Moisture and Enclosure Airflow

An ammonia sensor must receive representative air while remaining protected from the farm environment.

A livestock enclosure may contain:

Dust
Feathers
Feed particles
Insects
Water spray
Condensation
Corrosive gases
Cleaning chemicals
Mechanical impact

Protective Membrane and Filter

A filter or membrane can help protect the sensing chamber.

However, it may also:

Slow response
Become blocked
Trap contamination
Require replacement
Alter diffusion characteristics

The finished enclosure, filter and sensor should be tested together.

Avoiding an Over-Sealed Enclosure

A fully sealed enclosure can protect the electronics but prevent the sensing element from receiving representative air.

The mechanical design may need separate areas for:

Gas-sensing chamber
Electronics
Battery
Antenna
Cable entry
Service access

Any ingress-protection claim must be based on the final enclosure and sensing-interface design.

Sensor Placement Inside the Barn

Placement determines what the device actually measures.

Important factors include:

Animal breathing zone
Building height
Air inlets
Exhaust fans
Heaters
Manure channels
Feed and water lines
Doors
Dead-air zones
Cleaning access
Risk of animal contact

Avoid installing the only sensor:

Directly in front of a ventilation inlet
Immediately beside an exhaust fan
In a permanently wet position
Behind a solid obstruction
Too close to a heater
Where animals can damage it
Where cleaning spray reaches the sensor directly

The purpose of the installation should be defined first. A sensor used to assess animal-zone conditions may require a different location from one used to monitor exhaust emissions.

How Many Sensors Does a Building Need?

There is no universal sensor quantity.

The number depends on:

Building dimensions
Internal partitions
Animal density
Ventilation zones
Airflow pattern
Manure system
Required spatial detail
Critical monitoring points
Maintenance access

A pilot can compare several candidate positions before the final installation plan is approved.

Large livestock buildings may need multiple sensors because one location cannot represent every pen or ventilation zone.

Calibration and Functional Verification

Calibration is essential for meaningful gas measurements.

Factory Calibration

Factory calibration may use controlled ammonia concentrations and reference equipment.

The production process should define:

Calibration points
Stabilization time
Temperature and humidity conditions
Acceptable error
Stored coefficients
Device serial number
Calibration record
Failed-unit handling

Field Calibration

Field calibration may require:

Approved test gas
Gas regulator
Calibration adapter
Defined flow rate
Stabilization period
Authorized technician
Platform record

The required method depends on the sensor module and application.

Bump Testing

A functional exposure test can verify that the device responds to the target gas and that the alarm path operates.

A bump test is not necessarily the same as a complete quantitative calibration.

The maintenance documentation should distinguish:

Functional test
Zero adjustment
Span calibration
Sensor replacement
Complete device calibration

Sensor Aging and Replacement

Gas-sensing elements do not have unlimited service life.

The replacement schedule can depend on:

Sensor technology
Exposure concentration
Temperature
Humidity
Contaminants
Storage duration
Cleaning chemicals
Calibration results
Manufacturer guidance

An OEM design may use a replaceable sensing cartridge or module.

The system should define how replacement affects:

Calibration coefficients
Sensor serial number
Maintenance history
Firmware configuration
Remaining-life indication
Waste handling

Battery life and gas-sensor life should be treated as separate maintenance items.

Measurement and Reporting Strategy

The device does not need to send every raw reading.

A typical operating cycle may be:

Power or activate the sensing element.
Wait for the required stabilization period.
Collect one or more measurements.
Apply temperature and humidity compensation.
Filter abnormal samples.
Compare the result with thresholds.
Store selected data locally.
Transmit a summary or alarm.
Return eligible circuits to low-power mode.

Some gas sensors require continuous operation or extended warm-up. In such cases, external power may be more practical than battery-only operation.

Alarm Logic

A useful ammonia-monitoring system should avoid both delayed warnings and unnecessary notifications.

Possible functions include:

Warning threshold
High-level threshold
Sustained-concentration alarm
Rate-of-rise alarm
Time-weighted average
Return-to-normal event
Hysteresis
Repeated reminders
Sensor-fault alarm
Device-offline alarm

Thresholds should be configured according to applicable regulations, farm policies, animal-production guidance and the validated sensor range.

The manufacturer should not select one universal threshold for all countries and livestock types.

Ventilation-System Integration

Ammonia measurements can provide input to a ventilation or farm-control platform.

A possible architecture is:

NH₃ Sensor → LoRaWAN Gateway → Farm Platform → Ventilation Controller

The project should define:

Control authority
Maximum acceptable data age
Minimum ventilation requirements
Sensor-fault behavior
Gateway-outage behavior
Manual override
Local controller limits
Temperature interaction
Alarm escalation
Command confirmation

LoRaWAN is suitable for monitoring and supervisory data. Fast or safety-critical ventilation functions should retain appropriate local control.

Combining NH3 With Other Farm Data

Ammonia readings become more useful when interpreted with related environmental data.

Possible measurements include:

Temperature
Relative humidity
Carbon dioxide
Air pressure
Air velocity
Particulate matter
Fan operating state
Water consumption
Animal activity
Outdoor weather

For example, increasing ammonia combined with high humidity and reduced fan operation provides more context than the NH₃ value alone.

Environmental monitoring can also complement a smart livestock tracking and virtual-fencing system. Animal-location devices and barn sensors serve different purposes but can report through a shared farm IoT architecture.

Battery or External Power?

Battery Operation

Battery-powered installation can reduce cabling, but feasibility depends strongly on the sensing element.

The power budget should include:

Sensor warm-up current
Sensor heater current
Measurement duration
Sampling interval
LoRaWAN transmission interval
Alarm traffic
Confirmed-message retries
Local storage
Temperature
Battery chemistry
Firmware sleep current

A battery-life estimate based only on the LoRaWAN radio can be misleading if the gas sensor consumes most of the energy.

External Power

External DC power may be preferable for:

Continuous NH₃ measurement
Heated sensing elements
Frequent platform updates
Local display
Buzzer or warning light
Multiple gas sensors
LoRaWAN Class C
Relay or ventilation output

A backup battery can be considered where monitoring must continue during a temporary power interruption.

LoRaWAN Payload Design

An ammonia-sensor uplink may contain:

NH₃ concentration
Temperature
Relative humidity
Filtered or raw-value indicator
Warning and alarm flags
Sensor warm-up status
Sensor fault
Calibration status
Battery or input voltage
Record sequence number
Historical-record flag
Firmware version
Protocol version

The protocol should define:

Measurement unit
Scale
Byte positions
Field lengths
Byte order
Signed or unsigned format
Invalid-value representation
Sensor-overrange status
Alarm-bit meanings
Protocol-version compatibility

Invalid or warming-up measurements should not be displayed as valid zero readings.

Local Storage and Network Recovery

The sensor may detect an abnormal condition while the gateway or backhaul is offline.

Possible reliability functions include:

Local measurement storage
Alarm-event memory
Sequence numbers
Controlled retransmission
Current status in heartbeat packets
Multiple-gateway coverage
Historical-data upload
Server-side duplicate detection

When communication returns, delayed measurements should be marked as historical records.

The platform should not confuse an old alarm with a new live event.

Gateway Planning for Livestock Buildings

Agricultural buildings can contain metal roofing, concrete walls, equipment, feed storage and changing moisture conditions.

Gateway planning should consider:

Number of livestock buildings
Distance between buildings
Building construction
Sensor mounting height
Metal partitions
Outdoor terrain
Vegetation
Gateway antenna height
Available Ethernet or cellular backhaul
Required redundancy
Number of sensors
Reporting frequency
Regional frequency plan

A farm may use one gateway for environmental sensors, livestock collars and other LoRaWAN devices, provided that coverage and network capacity are properly planned.

The LoRaWAN gateway manufacturer and deployment guide provides additional information about antennas, backhaul and private-network planning.

Farm Monitoring Platform Functions

A livestock-environment platform may provide:

Farm, building and zone hierarchy
Current ammonia readings
Temperature and humidity
Historical charts
Warning and alarm events
Time above configured thresholds
Daily minimum, maximum and average
Sensor calibration records
Sensor replacement history
Battery status
Device-offline alarms
Gateway status
Ventilation-system data
User permissions
Data export
MQTT or HTTP integration
Customer API
Mobile application

The system should retain enough information to distinguish:

Normal measurement
Sensor warm-up
Sensor fault
Calibration mode
Communication loss
Out-of-range value

OEM and ODM Customization Options

A custom LoRaWAN ammonia sensor project may include:

Electrochemical NH₃ sensor
Metal-oxide gas sensor
Replaceable sensor cartridge
Temperature and humidity compensation
CO₂ measurement
Hydrogen sulfide measurement
Particulate measurement
Local display
Status indicator
Audible alarm
Relay output
RS485 or Modbus
4–20mA output
Battery operation
External DC power
Backup battery
Local data storage
External antenna
Wall or pole mounting
Protective sensor membrane
Replaceable dust filter
Bluetooth or NFC configuration
Customer-defined LoRaWAN payload
Private-server integration
Branded enclosure, labels and packaging

A multi-gas product requires separate evaluation of every sensing element. One calibration procedure cannot automatically cover all gas channels.

Regional Frequency and Compliance Planning

The sensor and gateway must use the frequency plan required by the destination market.

Common plans include:

EU868
US915
AU915
AS923 variants
CN470
IN865
KR920
RU864

The project may also need to evaluate:

Radio compliance
Electromagnetic compatibility
Electrical safety
Gas-monitoring requirements
Agricultural installation rules
Hazardous-location requirements
Calibration traceability
Environmental testing
Product labeling

No measurement accuracy, service life, ingress rating, explosion-protection status or certification should be claimed before it has been verified for the final product.

Recommended OEM Development Process

1. Define the Livestock Application

Confirm the animal type, building structure, ventilation system, manure-management method and monitoring objective.

2. Define the Measurement Requirements

Specify NH₃ range, required resolution, accuracy target, temperature, humidity and possible interfering gases.

3. Select the Sensor Technology

Compare electrochemical, metal-oxide and specialized sensing technologies according to power, selectivity, maintenance and cost.

4. Design the Enclosure and Air Path

Protect the electronics while allowing representative air to reach the sensing element.

5. Develop Hardware and Firmware

Complete the sensor interface, PCB, antenna, power supply, compensation algorithm, LoRaWAN communication and payload.

6. Calibrate and Test

Use suitable reference equipment and controlled gas exposure. Evaluate temperature, humidity, dust, cleaning chemicals and cross-sensitivity.

7. Conduct a Farm Pilot

Install devices in representative zones and compare readings with ventilation operation and suitable reference measurements.

8. Prepare for Production

Finalize calibration fixtures, functional tests, sensor storage, device credentials, firmware versioning, labels, packaging and traceability.

Information Required for a Quotation

Customers should provide:

Poultry, pig, cattle or other livestock application
Building dimensions and layout
Animal density or production stage
Ventilation-system description
Expected ammonia range
Accuracy and resolution targets
Temperature and humidity range
Possible interfering gases or chemicals
Required number of monitoring points
Measurement and reporting intervals
Alarm logic
Local display, buzzer or relay requirements
Battery or external power preference
Indoor or semi-outdoor installation
Calibration and sensor-replacement requirements
Destination country and LoRaWAN frequency
Gateway and cellular-backhaul requirements
Network Server
Platform, API or ventilation integration
Prototype and estimated production quantities
Logo, enclosure and packaging requirements

Building drawings, ventilation diagrams and photographs can improve sensor-placement and gateway recommendations.

Frequently Asked Questions

Is ammonia monitoring the same as CO2 monitoring?

No. NH₃ and CO₂ are different gases and require different sensing technologies. Both may be useful for understanding livestock-building ventilation.

Can one sensor represent an entire poultry house?

Not always. Large buildings and separate ventilation zones may require several monitoring points because ammonia concentration and airflow can vary by location.

Which ammonia sensor technology is best?

The appropriate choice depends on the required range, selectivity, power supply, humidity, temperature, calibration process and expected interfering gases.

Can an ammonia sensor run on batteries?

Possibly. Feasibility depends mainly on sensor warm-up and heater consumption, measurement interval and LoRaWAN reporting profile.

Does the device require a SIM card?

The LoRaWAN end device normally does not require a SIM card. A remote gateway may use a cellular SIM for internet backhaul.

Can NH3 readings automatically control ventilation?

They can provide supervisory input, but automatic control requires validated local logic, minimum ventilation rules, failure handling and manual override.

How often must the sensor be calibrated?

The interval depends on the sensing element, operating environment, required accuracy and manufacturer guidance. Calibration performance should be checked during the farm pilot.

Can cleaning chemicals affect the sensor?

Yes. Some gases, disinfectants and cleaning products can create temporary interference or damage the sensing element. They should be included in compatibility testing.

Can the same device measure hydrogen sulfide?

A multi-gas design can include a separate H₂S sensor. Ammonia and hydrogen sulfide normally require different sensing channels and calibration procedures.

Is an NH3 sensor a personal safety detector?

A general farm-monitoring sensor should not be used as a personal safety detector unless the complete device has been designed and approved for that purpose.

What happens when the gateway is offline?

The device can continue measuring and store records if local memory is included. Remote alarms require an available communication path.

Can the sensor connect to an existing farm platform?

Custom payloads, MQTT, HTTP APIs and private-server integration can be evaluated according to the customer’s Network Server and software requirements.

Is private-label manufacturing available?

Sensor functions, enclosure, firmware, payload protocol, labels, packaging and platform branding can be evaluated for OEM or ODM production.

Conclusion

A LoRaWAN ammonia sensor provides continuous environmental data from poultry houses, pig barns, cattle buildings and manure-management facilities without installing a separate communication cable at every monitoring point.

Reliable results depend on selecting the correct sensing technology, understanding cross-sensitivity, protecting the sensor from dust and moisture, choosing representative installation positions and maintaining a documented calibration process.

The device should be evaluated as part of a complete farm-monitoring system that includes gateways, software, alarm procedures and appropriate local ventilation controls.

Shenzhen Jinshengchang Technology Co., Ltd. can evaluate OEM and ODM livestock-environment projects covering sensing hardware, PCB design, embedded firmware, LoRaWAN communication, gateways, platform integration, APIs, prototypes and production preparation.

Request an OEM LoRaWAN Ammonia Sensor Proposal

Send your livestock-building layout, animal type, expected NH₃ range, environmental conditions, power preference, destination country, estimated quantity and platform requirements for technical evaluation.

Shenzhen Jinshengchang Technology Co., Ltd.

WhatsApp: +86 134 8088 1974
Phone: +86 134 8088 1974
Phone: +86 177 2242 0256
Email: 397017470@qq.com