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Shanghai Yifeng Instrumentation & Equipment Co., Ltd.

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BrandTriOS
OriginGermany
ModelLISA SAC 254
Measurement PrincipleUV absorbance at 254 nm (SAC₂₅₄) and visible reference at 530 nm
Light SourceDual LED (254 nm UV-C, 530 nm green)
DetectorFiltered photodiode
Path Length Options1, 2, 5, 10, or 50 mm
Output InterfacesEthernet (TCP/IP), RS-232/RS-485 (Modbus RTU, TriOS protocol), 4–20 mA analog
Turbidity CompensationInternal dual-wavelength correction (530 nm channel)
Accuracy±0.2% FS
Response Time4 s
Measurement Interval2 s
Data Logging Capacity2 MB (T100 format)
Operating Temperature2–40 °C (sample & ambient)
Storage Temperature−20–80 °C
Flow Velocity Range0.1–10 m/s
Max. Pressure (SubConn)30 bar
Max. Pressure (Fixed Cable)3 bar
Max. Pressure (Flow Cell)1 bar (2–4 L/min)
Enclosure MaterialStainless Steel 1.4571 / 1.4404 or Titanium Grade 3.7035
IP RatingIP68
Power Supply12–24 VDC (±10%)
Power Consumption≤1 W
Dimensions (10 mm path)300 mm × 48 mm
Weight (10 mm, stainless steel)1.6 kg
Compliant WithISO 7027 (turbidity correlation), ASTM D5540 (SAC-based organic carbon estimation), EN ISO 8466-1 (calibration linearity), FDA 21 CFR Part 11-ready data logging (via TriOS software)
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BrandPro-Oceanus
OriginCanada
ModelCO2-Pro™
Measurement PrincipleMembrane Equilibration with NDIR Detection
Standard Range0–600 µatm (extendable to 0–2000 µatm)
Accuracy±0.5% of reading
Resolution0.01 ppm (equivalent to 0.01 µatm)
Response Time (t₆₃)2.5 min (with integrated pump)
Operating DepthUp to 50 m
Housing MaterialAcetal (POM)
Temperature Range0–30 °C (standard), –2–20 °C (polar), 15–40 °C (tropical)
Power Input10–18 VDC
Power Consumption4 W (10 W during warm-up, including SBE 3K pump)
Data OutputRS-232 (ASCII), optional 0–5 V analog or 4–20 mA
Sampling IntervalConfigurable down to 1 s
Internal Storage2 GB microSD card
Weight6.5 kg in air / 0.5 kg in water
Dimensions33 cm length × 19 cm diameter
Pressure/Temperature/Humidity CompensationAutomatic and embedded
Zero CalibrationAutomatic Zero Point Calibration (AZPC) with onboard CO₂ scrubber
Biofouling ResistanceFully membrane-isolated optical path
ComplianceDesigned for GLP-aligned long-term deployments
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BrandCTG
OriginUnited Kingdom
Manufacturer TypeAuthorized Distributor
Origin CategoryImported
ModelERAS
PricingAvailable Upon Request
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BrandPro-Oceanus
OriginCanada
ModelMini CO2
Measurement PrincipleMembrane Equilibration with NDIR Detection
CO₂ Range0–2000 ppm (extendable to 0–100% vol)
TDGP Range0–2 bar
Accuracy±2% of full scale (pCO₂), ±1% FS (TDGP)
Response Time (t₆₃)3 min
Resolution0.1% of full scale
Operating Depth600 m (acetal housing), 6000 m (titanium housing)
Dimensions28 cm × 5.3 cm (L × Ø)
Weight in Air0.53 kg
Weight in Water0.06 kg
Temperature Range–2 °C to +35 °C
Power Input7–24 VDC (digital), 12–24 VDC (analog)
Power Consumption0.45 W (digital), 0.6–0.9 W (analog)
Data OutputRS-232 (ASCII CSV), 0–5 V or 4–20 mA
Sampling IntervalConfigurable down to 2 s
Internal Storage2 GB microSD
Pressure/Temperature/Humidity CompensationAutomatic
ComplianceDesigned for ASTM D5176, ISO 14687, and GLP-aligned long-term environmental monitoring deployments
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BrandSEBA
OriginGermany
ModelKLL / KLL-T / KLL-Mini
Cable Options10–500 m
Depth Accuracy≤1 cm (up to 300 m)
Temperature Accuracy±0.10 °C (0–25 °C), ±0.15 °C (0–50 °C)
Conductivity Ranges4 selectable (20 μS/cm – 50 mS/cm)
Power6 V DC (KLL/KLL-T, 4 × 1.5 V AA) or 3 V DC (KLL-Mini, 2 × 1.5 V AA)
Operating Temp−15 °C to +50 °C
Storage Temp−40 °C to +80 °C
IP RatingIP68 (probe), IP52 (reel)
Probe Diameter10–16 mm
Display8-character LCD (KLL-T)
Language SupportEnglish, German, French, Spanish
Reel MaterialHeat-resistant polymer
Frame MaterialAnodized aluminum
CablePE-sheathed dual-steel-core corrosion-resistant cable
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BrandPro-Oceanus
OriginCanada
ModelMini CH4™
Measurement PrincipleMembrane Inlet Non-Dispersive Infrared (NDIR) Spectroscopy
CH₄ Range0–1% v/v, 0–10% v/v, or 0–100% v/v (user-selectable)
TDGP Range0–2 bar
Accuracy±3% FS (CH₄), ±1% FS (TDGP)
Stabilization Time (t₆₃)8 min (with pump head)
Resolution0.1% FS
Depth Rating600 m (acetal housing), 6000 m (titanium housing)
Operating Temperature−2 °C to 35 °C
Power Input7–24 VDC (digital), 12–24 VDC (analog)
Power Consumption0.45 W (digital), 0.6–0.9 W (analog)
Data OutputRS-232 (ASCII CSV), 0–5 V analog, or 4–20 mA
Sampling IntervalConfigurable down to 2 s
Internal Storage2 GB microSD card
Housing MaterialAcetal or Grade 5 Titanium (Ti-6Al-4V)
Weight in Air0.53 kg
Weight in Water0.06 kg
Dimensions28 cm L × 5.3 cm Ø
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BrandTriOS
OriginGermany
ModelOPUS UV
Light SourceXenon lamp
Detector256-channel miniature spectrometer (200–360 nm, 0.8 nm/pixel)
Measurement PrincipleAbsorption spectroscopy (attenuation-based)
Optical Path Lengths0.3 mm, 1 mm, 2 mm, 5 mm, 10 mm, 50 mm
Turbidity CompensationYes
Data Memory2 GB internal
Measurement Interval≥1 minute
Output InterfacesRS232 or RS485
Power Consumption≤8 W
Housing MaterialStainless steel or titanium alloy (seawater-resistant)
DimensionsØ48 × 470 mm
Weight3 kg (stainless steel, 10 mm path)
Pressure Rating30 bar (with SubConn connector), 3 bar (fixed cable), 1 bar (flow cell, 2–4 L/min)
Ingress ProtectionIP68
Sample Temperature Range2–40 °C
Ambient Temperature Range2–40 °C
Storage Temperature Range−20–80 °C
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BrandTriOS
OriginGermany
ModelmicroFlu-HC
Measurement PrincipleUV-induced fluorescence (255 nm excitation, 360 nm emission)
Target AnalytesPolycyclic Aromatic Hydrocarbons (PAHs) and total petroleum hydrocarbons (TPH) in water
RangePAHs 0–5000 ppb, TPH 0–150 ppm
LODPAHs 5 ppb, TPH 0.15 ppm
Accuracy±10 % FS
Response Time (T90)6 s
Min. Measurement Interval3 s
Digital InterfaceRS-485 / Modbus RTU
Analog Outputs4–20 mA (default), 0–5 V, 0–10 V
Power Supply12–24 VDC (±10 %)
Housing MaterialStainless Steel 1.4571/1.4404 or Titanium Grade 3.7035
Dimensions162 mm × 48 mm
Weight~650 g (SS), ~510 g (Ti)
Max. Pressure Rating30 bar (SubConn), 3 bar (fixed cable), 1 bar (flow cell)
IP RatingIP68
Operating Temp.+2 to +40 °C (sample & ambient)
Storage Temp.−20 to +80 °C
Flow Rate Compatibility0.1–10 m/s
Optical WindowNano-coated quartz
Turbidity CompensationNone
Data LoggingInternal storage not supported
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BrandTriOS
OriginGermany
ModelmicroFlu CDOM
Light SourceHigh-efficiency blue LEDs (370 nm) with internal reference photodiode
DetectorPhotodiode (460 nm, 20 nm FWHM)
Measurement Range0–20 μg/L and 0–200 μg/L (dual-range auto-adaptive)
Detection Limit0.02 μg/L
Resolution0.02 μg/L
Accuracy±3% of reading
HousingMarine-grade stainless steel (corrosion-resistant to seawater)
DimensionsØ48 × 200 mm
Weight0.5 kg
Pressure Rating500 m water depth
Electrical InterfaceRS-232 and 0–5 V analog output
ConnectorSUB-CONN Micro 5-pin male
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BrandPro-Oceanus
OriginCanada
ModelSolu-Blu CH4
Measurement PrincipleMembrane Inlet Non-Dispersive Infrared (NDIR)
CH₄ Range0–30 mg/L (switchable to 0–3 mg/L and 0–300 µg/L)
TDGP Range0–2 bar
Accuracy±3% of full scale (pCH₄), ±0.1% FS (TDGP)
Response Time (t₆₃)10 min
Resolution0.1% of full scale
Operating Depth0–50 m
Temperature Range0–35 °C
Power Input7–24 VDC
Power Consumption90 mW (RS-232 + 0–5 V), 300–600 mW (RS-232 + 4–20 mA)
OutputRS-232 (ASCII), 0–5 V analog, or 4–20 mA analog
Sampling IntervalConfigurable down to 2 s
Dimensions19.68 cm (L, sensor only), 25.68 cm (L with connector)
Weight0.47 kg
Housing MaterialAcetal (POM)
Standard Cable3 m integrated
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BrandTriOS
OriginGermany
ModelLISA color
Optical Path Lengths50 mm, 100 mm, 150 mm, 250 mm
Measurement PrinciplesAbsorption-based attenuation at dual-wavelength LED pairs (e.g., 436 nm & 740 nm)
Compliance StandardsDIN EN ISO 7887:2012-04 (Methods B & C), DIN EN ISO 6271-2:2005-03, GOST 3351-74
Measured ParametersSAC (436/525/620 nm), True Color (410 nm), Hazen/APHA (390/455 nm), Cr-Co (380/413 nm)
Turbidity CompensationYes, via 740 nm reference channel
Accuracy±0.5 % of reading
Response Time4 s
Minimum Measurement Interval2 s
Housing MaterialsStainless Steel 1.4571 / 1.4404 or Titanium Grade 2 (3.7035)
Dimensions (L × Ø)340 mm × 48 mm (for 50 mm path)
Weight~2.4 kg (stainless), ~1.3 kg (titanium)
Digital InterfacesEthernet (TCP/IP), RS-232/RS-485 (Modbus RTU)
Analog Output4–20 mA
Power Supply12–24 VDC (±10 %), ≤1 W
Max. Pressure Rating30 bar (SubConn), 3 bar (fixed cable), 1 bar (flow cell)
IP RatingIP68
Operating Temperature+2 °C to +40 °C
Storage Temperature−20 °C to +80 °C
Flow Velocity Range0.1–10 m/s
Data Memory~2 MB
Calibration Interval24 months
Optical WindowNano-coated sapphire
Cleaning OptionOptional pneumatic cleaning system
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BrandPro-Oceanus
OriginCanada
Manufacturer TypeAuthorized Distributor
Origin CategoryImported
ModelCO2-Pro CV
PricingUpon Request
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BrandTriOS
OriginGermany
ModelTpH
Measurement PrinciplePotentiometric Analysis
Measured ParameterspH (0–14), Temperature (0–65 °C)
Accuracy±0.01 pH, ±0.1 °C
Resolution±0.06 pH, ±0.5 °C
Intrinsic Error (pH 1/7/13)±0.05 / ±0.05 / ±0.35 pH
Linearity Error±0.1 pH
Repeatability (pH 1/7/13)±0.1 / ±0.05 / ±0.1 pH
Signal Stability (pH 4/7)±0.05 / ±0.025 pH
Warm-up Time< 5 min
Short-term Drift (24 h)< 0.03 pH
Long-term Drift (1 week)< 0.05 pH
Response Times (T10/T90/T100)≤2 s / ≤5 s / ~10 s
Temperature CompensationPt1000
Output InterfaceRS-485, Modbus RTU
Supply Voltage12–24 VDC (±10 %)
Power Consumption0.2 W
Housing MaterialPPS / PET / NBR
Dimensions (L × Ø)180 × 27 mm
Weight110 g
Cable Options2 m, 10 m (standard)
IP RatingIP68
Max. Operating Pressure (free-flow)3 bar
Max. Flow Rate3 m/s
Sample Temp. Range+2 to +40 °C
Ambient Temp. Range−5 to +55 °C
Storage Temp.0 to +80 °C
Maintenance Interval≤0.5 h/month
Calibration Interval4 weeks
Flow Cell CompatibilityYes (1 bar, 2–4 L/min)
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BrandSEBA
OriginGermany
ModelSEBAPULS
Technology26 GHz Pulse Radar
Accuracy±3 mm (SEBAPULS 30), ±5 mm (SEBAPULS 20), ±15 mm (SEBAPULS 70)
Measuring Range0–20 m / 0–30 m / 0–70 m
Operating Temperature−40 °C to +80 °C
Output4–20 mA (standard), optional voltage output & remote telemetry (GSM/GPRS, satellite, landline)
Antenna TypePlastic horn (SEBAPULS 20), stainless steel horn (SEBAPULS 30/70)
HousingAluminum enclosure, IP66
Minimum Distance to Surface50 mm
Minimum Distance to Mounting Bracket20–30 cm
Power ConsumptionLow-power design optimized for solar/battery operation
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BrandSEBA
OriginGermany
ModelDipper-TEC
Pressure Sensor TypeCeramic
Measurement PrincipleCompensated Piezoresistive Transduction
Water Level Range0–20 m (customizable up to 200 m)
Accuracy±0.05% FS (e.g., ±1 cm at 20 m range)
Resolution0.3 mm (0–10 m range)
Temperature Range–5 °C to +50 °C
Conductivity Ranges0–200 µS/cm, 0–2 mS/cm, 0–20 mS/cm, or 0–200 mS/cm
Conductivity Accuracy±0.5%
Stability±0.1% FS/year
Data Storage1 MB flash memory (~480,000 records)
Sampling Interval1 min – 45 days
Operating Temperature–20 °C to +70 °C
Battery Life>10 years (60-min interval)
Housing Diameter22 mm
Length270 mm
Cable Max Length1000 m
CommunicationRS485 (ASCII), optional Bluetooth
Enclosure RatingIP67 (handheld unit)
Processor16-bit MCU (sensor unit)
Display240 × 320 TFT touchscreen, 1/4 VGA
PowerRechargeable 3800 mAh NiMH battery (12–30 h operation)
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BrandSEBA
Country of OriginGermany
ModelDipper-TEC
Sensor TypeCeramic Piezoresistive Pressure Transducer with Barometric Compensation
Water Level Range0–20 m (customizable up to 200 m)
Water Level Accuracy±0.05% FS (±1 cm at 20 m range)
Resolution0.3 mm (0–10 m range)
Long-Term Stability±0.1% FS/year
Temperature SensorPT1000 or NTC, Range: –5 to +50 °C, Accuracy: ±0.1 °C
Conductivity Sensor4-electrode cell, Ranges: 0–200 µS/cm, 0–2 mS/cm, 0–20 mS/cm, or 0–200 mS/cm, Accuracy: ±0.5% FS
Operating Temperature–20 to +70 °C (sensor), 0 to +50 °C (conductivity cell)
Battery Life>10 years @ 60-min logging interval
Memory1 MB Flash (≈480,000 data records)
Data Logging Interval1 min – 45 days
CommunicationRS485 (ASCII), Optional Bluetooth (via handheld HAD reader)
Enclosure Diameter22 mm
Length270 mm
Max Cable Length1000 m
IP RatingIP68 (sensor), IP67 (HAD reader)
Power SupplyLithium primary battery (non-rechargeable)
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BrandCTG
OriginUnited Kingdom
ModelHydrosense
TypePre-amplified underwater acoustic transducer
Frequency RangeWideband (typical coverage: 10 Hz – 200 kHz, dependent on configuration)
DirectivityOmnidirectional in horizontal plane
SensitivityHigh receive sensitivity (typical −165 dB re 1 V/µPa, integrated preamplifier)
Signal-to-Noise RatioOptimized for low-noise environmental monitoring
Operating DepthUp to 1000 m (standard version)
ComplianceDesigned per ISO 18405, IEC 60565, and ASTM E1002 for hydrophone calibration and field deployment
Output InterfaceLow-impedance voltage output, BNC or LEMO connector
Environmental RatingIP68, corrosion-resistant titanium or stainless-steel housing
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BrandTriOS
OriginGermany
ModelTpH-D
Measurement PrinciplePotentiometric Analysis
pH Range0–14 pH
Temperature Range0–65 °C
Resolution0.01 pH / 0.1 °C
Accuracy±0.06 pH / ±0.5 °C
Repeatability±0.05 pH (pH 7), ±0.1 pH (pH 1 & 13)
Drift (24 h)<0.03 pH
Response Time T90≤5 s
Temperature CompensationPt1000
Output InterfaceRS-485, Modbus RTU
Power Supply12–24 VDC (±10%)
Power Consumption0.2 W
Housing MaterialPPS / PET / NBR
Dimensions (L×D)225 × 32 mm
Weight180 g
IP RatingIP68
Max Operating Pressure3 bar (typical), 1 bar (in flow cell)
Flow Rate Compatibility0–3 m/s
Cable Options0.5 m, 2 m, 10 m fixed
Maintenance Interval≤0.5 h/month
Calibration IntervalEvery 4 weeks
Sample Temp.+2–+40 °C
Ambient Temp.−5–+55 °C
Storage Temp.+5–+15 °C
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BrandTriOS
OriginGermany
Manufacturer StatusAuthorized Distributor
Origin CategoryImported
ModelEGC-enviroFlu-HC
PricingUpon Request
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BrandSEBA
OriginGermany
ModelKLL-S
Sampling Capacity0.5 L (for 2″ wells), 1.0 L (for 4″ wells)
Well Diameter Compatibility2″ (50.8 mm) and 4″ (101.6 mm) boreholes
Standard Cable Length15–500 m (groundwater), 30 m (LNAPL, extendable)
Integrated Water Level MeasurementYes
Optional AccessoriesTripod support frame, gasoline-powered air compressor (10 bar, 350 L/min, 3.7 kW, 72 kg), SU-2-N submersible pump system (30 m discharge hose with 50 cm graduations, mobile hose reel, venting & exhaust lines, 34 kg)
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BrandTriOS
OriginGermany
Manufacturer TypeAuthorized Distributor
Origin CategoryImported
ModelTcon
PriceUpon Request
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BrandCTG
OriginUnited Kingdom
Manufacturer TypeAuthorized Distributor
Origin CategoryImported
ModelVASS
PricingUpon Request
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BrandWetlabs
OriginUSA
ModelECO-CD
Excitation Wavelength370 nm (high-efficiency red LEDs)
Emission Detection460 nm (silicon photodiode)
Measurement Range0–500 µg/L (as quinine sulfate equivalent, QSE)
Detection Limit0.09 µg/L
Housing MaterialAcetal polymer (seawater-corrosion resistant)
DimensionsØ63 × 127 mm
Weight0.4 kg (air), 0.02 kg (buoyant in seawater)
Pressure RatingStandard 600 m, optional 6000 m
Digital OutputRS-232, 19200 baud, 12-bit resolution
Analog Output0–5 V
Sampling Rate8 Hz
Power Input7–15 VDC
Typical Current Draw80 mA (active), 85 µA (sleep mode)
Internal MemoryOptional, 65,000 samples
Internal BatteryOptional
Anti-foulingOptional copper-brush wiper (programmable cycle)
ConnectorSUBCONN Micro 5-pin male
ComplianceIP68, RoHS, CE-marked for marine environmental instrumentation
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BrandWET Labs
OriginUSA
ModelCYCLE-PO4
Detection PrincipleColorimetric Analysis via LED-based Optical Absorption (Molybdenum Blue Method)
Wavelength870 nm
Optical Path Length5 cm
Linearity≥95% R²
Detection Limit (3σ in 18 MΩ·cm water)≤75 nM PO₄-P (≤0.0023 mg P/L or ≤0.0071 mg/L PO₄)
Measurement FrequencyUp to 2 samples/hour
Operating Temperature Range0–30 °C
Pressure Rating200 m depth (IP68)
Dimensions (H×W)56 cm × 18 cm
Air Weight6.8 kg
Power Input9.5–18 VDC
Data Storage1 GB internal flash memory
InterfaceRS-232 serial
Sample Throughput>1000 measurements per deployment
Autonomous Operation Duration>3 months on typical profiling or moored duty cycle
CalibrationField-deployable two-point (zero/span) optical calibration with automated drift compensation
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