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Shanghai Yifeng Instrumentation & Equipment Co., Ltd.

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BrandTriOS
OriginGermany
ModelNICO plus
Measurement PrincipleUV Absorption Spectrophotometry (254 nm)
Optical Path Length10 mm
Detection MethodDual-wavelength (254 nm + reference)
CalibrationBuilt-in temperature compensation
InterfaceG2 Web-enabled Ethernet interface
ComplianceDIN EN ISO 7027 (turbidity), ASTM D5540 (UVT), USP <643> (TOC estimation), GLP/GMP-ready data logging
Sample HandlingIn-situ, flow-through or immersion mode
Reagent-FreeYes
Optical WindowNano-coated quartz
Data StorageInternal SD card (optional), real-time streaming via Modbus TCP/RTU, HTTP API
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BrandTriOS
OriginGermany
ModelOPUS aero
Optical Path Lengths0.3 mm, 1 mm, 2 mm
Nitrate-N (NO₃-N) Range2.4–120 mg/L (0.3 mm), 0.7–36 mg/L (1 mm), 0.35–18 mg/L (2 mm)
Nitrite-N (NO₂-N) Range4.4–220 mg/L (0.3 mm), 1.3–67 mg/L (1 mm), 0.65–33.5 mg/L (2 mm)
Wavelength Range200–360 nm
Resolution0.8 nm/pixel
Detector256-channel Miniature Spectrometer
Light SourceXenon Flash Lamp
Turbidity CompensationYes
Accuracy±(5% + 0.1 mg/L)
Response Time2 min
Minimum Measurement Interval1 min
Housing MaterialStainless Steel 1.4571 / 1.4404
Dimensions470 × 48 mm
Weight~3 kg
Digital InterfacesEthernet (TCP/IP), RS-232/RS-485 (Modbus RTU)
Power Supply12–24 VDC (±10%)
Max. Power Consumption≤8 W
Pressure Rating3 bar (fixed cable), 1 bar (flow cell, 2–4 LPM)
IP RatingIP68
Operating Temperature+2 to +40 °C (sample & ambient), -20 to +80 °C (storage)
Flow Velocity0.1–10 m/s
Calibration Interval24 months
Data Storage2 GB internal
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BrandIn-situ Marine
OriginAustralia
ModelCTD-Optics Series
Measurement PrincipleHigh-stability quartz crystal conductivity cell, PT1000 RTD temperature sensor, piezoresistive pressure transducer
Data Logging16 GB microSD (timestamped binary + ASCII log files)
Power ManagementIntegrated 11.1 V / 7.8 Ah Li-ion battery with programmable sleep mode (65 µA)
CommunicationTriple RS-232 channels (configurable baud rate 9600–115200 bps), optional Wi-Fi download & 4G telemetry via C-TEL interface
ComplianceIP68 rated housing
Environmental RatingLong-term submersible deployment up to 100 m depth
Operating Temperature0–40 °C (ambient)
sensor range−55 to +125 °C (temperature), 0–100 m (depth), 0–100,000 µS/cm (conductivity)
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BrandIn-situ Marine
OriginAustralia
Manufacturer TypeAuthorized Distributor
Origin CategoryImported
ModelpHiDO
PricingUpon Request
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BrandTriOS
OriginGermany
ModelmicroFlu V2
Excitation/Emission WavelengthsChl-a (470/685 nm), Blue-Green Algae (620/655 nm), CDOM (375/460 nm), TRP (275/360 nm)
Measurement Range0–500 ppb (varies by analyte)
Detection Limit0.05–3 ppb (analyte-dependent)
Accuracy±(5% + detection limit)
T90 Response Time6 s
Minimum Measurement Interval3 s
Digital InterfaceRS-485, Modbus RTU
Analog Outputs4–20 mA (default), 0–5 V, 0–10 V
Power Supply12–24 VDC (±10%)
Typical Power Consumption0.6 W
Housing MaterialStainless Steel 1.4571/1.4404 or Titanium Grade 3.7035
Dimensions162 mm × 48 mm
Weight~650 g (stainless), ~510 g (titanium)
Pressure RatingSubConn version: 30 bar
Fixed-cable version3 bar
Flow-cell version1 bar
IP RatingIP68
Operating Temperature+2 to +40 °C
Storage Temperature−20 to +80 °C
Flow Rate Compatibility0.1–10 m/s
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BrandTriOS
OriginGermany
ModelNICO
Measurement PrincipleUV Absorption Spectrophotometry (Multi-Wavelength Compensation)
Detection Channels4
Wavelengths212 nm (NO₃⁻), 254 nm (DOC correction), 360 nm (turbidity correction)
Optical Path Lengths0.3, 1, 2, 5, 10, 50 mm
NO₃-N Range0–100 mg/L
Accuracy±(5% + 0.1 mg/L)
Turbidity & DOC CompensationYes
Response Time2 min
Minimum Measurement Interval1 min
Data Storage2 GB internal
Digital InterfacesEthernet (TCP/IP), RS-232/RS-485 (Modbus RTU)
Analog Output4–20 mA
Power Supply12–24 VDC (±10%)
Max. Power Consumption≤8 W
Housing MaterialsStainless Steel 1.4571 / 1.4404 or Titanium Grade 2 (3.7035)
Dimensions (L × Ø)470 mm × 48 mm (for 10 mm path length)
Weight~3 kg (stainless), ~2 kg (titanium)
Pressure RatingSubConn: 30 bar
Fixed Cable3 bar
Flow Cell1 bar
Flow Rate2–4 LPM
Inlet Velocity0.1–10 m/s
IP RatingIP68
Operating Temp.+2 to +40 °C (sample & ambient)
Storage Temp.−20 to +80 °C
Calibration/Maintenance Interval24 months
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BrandWetlabs
OriginUSA
ModelECO-Triplet
Measurement ParametersTurbidity, Chlorophyll-a Fluorescence, CDOM Fluorescence
Turbidity Range0–1000 NTU (Resolution: 0.01 NTU)
Chlorophyll-a Range0–250 µg/L (Detection Limit: 0.025 µg/L)
CDOM Range0–375 µg/L (Detection Limit: 0.28 µg/L)
Housing MaterialPolyacetal (Acetal Copolymer), Seawater-Corrosion Resistant
DimensionsØ63 × 127 mm
Weight0.4 kg (air), 0.02 kg (buoyant in seawater)
Pressure Rating600 m (custom depths available)
Digital OutputRS-232, 19200 baud, 12-bit resolution
Analog Output0–5 V (user-configurable per channel)
Internal Data LoggingOptional, up to 77,000 samples
Power Supply7–15 VDC
Operating Current60 mA (active), 140 µA (sleep mode)
Sampling Rate4 Hz
ConnectorSUBCONN Micro-5-pin male
Anti-fouling OptionRotating copper brush (programmable cleaning interval)
Optional FeaturesIntegrated battery pack, biofouling guard, CTD-mounting interface (compatible with SEA-BIRD CTD systems)
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BrandTriOS
OriginGermany
ModelOPUS
Spectral Range200–360 nm
Optical Path Length Options0.3, 1, 2, 5, 10, 50 mm
Detection PrincipleLinear Spectral Analysis (LSA) based on UV absorption
Turbidity CompensationYes
Data Storage2 GB internal
InterfaceEthernet (TCP/IP), RS-232/RS-485 (Modbus RTU), Wi-Fi
Housing MaterialStainless Steel 1.4571/1.4404 or Titanium 3.7035
IP RatingIP68
Operating Temperature+2 °C to +40 °C
Power Supply12–24 VDC (±10 %)
Max. Pressure Rating30 bar (SubConn), 3 bar (fixed cable), 1 bar (flow cell)
Response Time≤ 2 min
Measurement Interval≥ 1 min
Calibration Interval24 months
Accuracy (NO₃-N, 10 mm path)±(5 % + 0.01) mg/L
LOD (NO₃-N, 10 mm path)0.03 mg/L
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BrandChelsea Technology Group
ModelSeasentry
OriginUnited Kingdom
ApplicationReal-time inlet/outlet seawater monitoring for marine scrubbers
ComplianceISO 7027:1999 (turbidity), PAH detection optimized for EGCS washwater discharge verification
ConnectivityEthernet (TCP/IP), Modbus TCP support
Sensor IntegrationDual-stream UviLux optical sensors (PAH + turbidity), pH, temperature, flow switch
Media CompatibilitySeawater and freshwater
CabinetIP65-rated sensor enclosure with internal air purge system
Target UsersEGCS OEMs, shipbuilders, class societies, flag state auditors
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BrandAQUALABO
OriginFrance
Manufacturer TypeAuthorized Distributor
Origin CategoryImported
ModelPONSEL
Price RangeUSD 140–7,200 (FOB)
Detection PrincipleConductive Liquid-Level Sensing
Output TypeNon-polarized Dry Contact (SPST)
Detection Threshold0.5 mm water film
Detector Housing MaterialPVC with Stainless Steel Electrodes
Electronics Enclosure MaterialPVC
IP RatingIP68 (Detector & Electronics Box)
Operating Temperature0–50 °C
Detector Dimensions (H×W×D)20 × 80 × 60.5 mm
Electronics Box Dimensions (H×D)120 × 40 mm
Detector-to-Box Cable Length9 m (fixed, shielded multi-strand polyurethane-sheathed cable)
Output CablesTwo 1 m polyurethane-sheathed leads with bare tinned-copper terminations
Power SupplyInternal Li-MnO₂ battery (3.6 V, 3-year typical service life) or external +3.6 V ±5% (SPN mode, <200 µA quiescent current)
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BrandAQUALABO
OriginFrance
ModelC4E
Conductivity Range0–200.0 mS/cm
Resolution0.01–1 (scale-dependent)
Accuracy±1% of full scale
Salinity Range5–60 g/kg
TDS (KCl)0–133,000 ppm
Response Time<5 s
Operating Temperature0–50 °C
Temperature CompensationNTC
Output InterfaceModbus RS-485 (SDI-12 optional)
Update Interval<1 s
Supply Voltage5–12 V DC
Standby Current25 µA
Measurement Current (RS-485)6.3 mA @ 1 Hz
Pulse Current500 mA
DimensionsØ27 mm × 219 mm (total length)
Weight300 g (sensor + 3 m cable)
Housing MaterialsPVC, Delrin®, stainless steel
Max Pressure Rating5 bar
Protection RatingIP68
Connector9-pin armored connector with polyurethane jacket or waterproof Fisher-type
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BrandAQUALABO
OriginFrance
ModelPHEHT
Measurement PrincipleComposite Glass Electrode (pH) / Platinum Redox Electrode (ORP) with Ag/AgCl Reference
pH Range0–14
pH Resolution0.01
pH Accuracy±0.1
ORP Range−1000 to +1000 mV
ORP Resolution0.1 mV
ORP Accuracy±2 mV
Temperature Range0.00–50.00 °C
Temp Resolution0.01 °C
Temp Accuracy±0.5 °C
Response Time<5 s
Output InterfaceModbus RTU over RS-485 / SDI-12 (selectable)
Power Supply5–12 V DC
Standby Current25 µA
Active Current (RS-485, 1 Hz)3.9 mA
Active Current (SDI-12, 1 Hz)6.8 mA
Peak Pulse Current500 mA
Housing MaterialPVC, Delrin®, specialty pH glass, platinum, polyamide
CableArmored coaxial polyurethane cable (3 m standard), optional Fisher connector
Pressure Rating5 bar
IP RatingIP68
DimensionsØ27 mm (body) / Ø21 mm (tip), L = 207 mm
Weight350 g (sensor + 3 m cable)
Internal MemoryCalibration history and sensor metadata storage
ComplianceDesigned for ASTM D1293, ISO 10523, ISO 5814, USP <791>, and GLP/GMP-aligned data integrity workflows
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BrandAQUALABO
OriginFrance
ModelEHAN
Measurement PrincipleComposite Electrode (Pt Working Electrode / Ag/AgCl Reference Electrode with Colloidal KCl Electrolyte)
ORP Range−1000.0 to +1000.0 mV
ORP Resolution±0.1 mV
ORP Accuracy±10 mV
Temperature SensingNTC Thermistor
Temp. Range0.00–50.00 °C
Temp. Resolution0.01 °C
Temp. Accuracy±0.5 °C
Response Time (t₉₀)<5 s
Output InterfaceModbus RTU over RS-485 (standard), SDI-12 (optional)
Supply Voltage5–12 V DC
Quiescent Current25 µA
Active Current (1 measurement/s)20 mA (RS-485 or SDI-12)
Pulse Current (Heating Activation)500 mA
Heating Pulse Duration100 ms
Operating Pressure≤5 bar
Housing MaterialsPVC, POM-C, Platinum, Polyurethane
Cable3 m armored polyurethane-sheathed cable with 9-pin connector (bare leads or waterproof Fischer-type)
Dimensions (installed, without gland)262 mm
(with compression gland)324 mm
Weight350 g (sensor + cable)
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BrandAQUAREAD
OriginUnited Kingdom
ModelAP-700 & AP-800
IP Rating (Sensor)IP68
IP Rating (Aquameter Display Unit)IP67
Cable Length3 m
Parameters MeasuredpH, ORP, Conductivity, Dissolved Oxygen (DO), Temperature, Turbidity (AP-800 only)
ComplianceCE, RoHS, UKCA
Housing MaterialMarine-grade anodized aluminum
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BrandAquaread
OriginUnited Kingdom
ModelAP-2000
Measurement Parameters (Standard)Optical Dissolved Oxygen, pH, ORP, Electrical Conductivity (EC), Temperature
Optional Add-onsOne Ion-Selective Electrode (e.g., NH₄⁺, NH₃-N, Cl⁻, F⁻, NO₃⁻, Ca²⁺) + One Optical Sensor (e.g., Chlorophyll-a, Phycocyanin, Turbidity, Hydrocarbon/Oil-in-Water)
Depth MeasurementAvailable in AP-2000-D variant with integrated pressure-based depth sensor
Data LoggingOnboard memory via Aquaread Logger software
GPS IntegrationBuilt-in high-sensitivity GPS module with WGS84 coordinate output
Data VisualizationExport-compatible with Google Maps and Google Earth (KML/KMZ)
Compliance ContextDesigned for field-deployable environmental monitoring per ISO 5667 (water sampling), ASTM D3370 (field measurement practices), and EPA Method 160.1 (pH/EC/DO field protocols)
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BrandAQUALABO
OriginFrance
Manufacturer TypeAuthorized Distributor
Origin CategoryImported
ModelSTAC Online Water Quality Early-Warning System
PricingAvailable Upon Request
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BrandAQUALABO
OriginFrance
ModelCTZN
Measurement PrincipleInductive (Toroidal) Conductivity
Temperature CompensationIntegrated NTC
Conductivity Range0.0–100.0 mS/cm
Resolution0.1 mS/cm
Salinity Range0–60 g/kg
Temperature Range0–50 °C
Temp. Accuracy±0.5 °C (0–40 °C)
Response Time (90%)<30 s
Output InterfaceModbus RTU over RS-485 (standard), SDI-12 optional
Supply Voltage5–28 VDC (max 30 V)
Power Consumption<50 µA (sleep), 11.5–31 mA (active, depending on supply)
Max Pulse Current700 mA (150 ms), 350 mA (2 ms)
DimensionsØ62.4 × 196 mm
Weight700 g
Housing MaterialsEPDM, PVC, stainless steel (316L)
Pressure Rating5 bar
Ingress ProtectionIP68
Cable Termination9-pin armored connector with polyurethane jacket or waterproof Fisher connector
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