Environmental Monitoring Instruments
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| Brand | YST (Dalian Yist Environmental Technology Co., Ltd.) |
|---|---|
| Origin | Liaoning, China |
| Model | YST909B-CH980 |
| Measurement Range | Free Chlorine 0–5 mg/L (extendable to 0–20 mg/L), Total Chlorine 0–10 mg/L (extendable to 0–50 mg/L) |
| Resolution | 0.01 mg/L |
| Accuracy | ±2% FS or ±0.02 mg/L (whichever is greater) |
| Response Time (T90) | ≤60 s |
| Operating Temperature | 0–50 °C |
| Relative Humidity | 10–90% RH (non-condensing) |
| Power Supply | AC 220 V ±10%, 50 Hz or DC 12–24 V |
| Output Signals | 4–20 mA analog, RS485 digital (Modbus RTU protocol) |
| Ingress Protection | IP65 |
| Calibration | Automatic (programmable interval) or manual |
| Brand | YST (Dalian Yist Instrument Co., Ltd.) |
|---|---|
| Origin | Liaoning, China |
| Model | YST909B-CH980 |
| Measurement Principle | Electrochemical and DPD-based Spectrophotometric Methods |
| Range (Electrochemical) | 0.01–200 mg/L as Cl₂ |
| Range (Spectrophotometric) | 0.0–10.0 mg/L as Cl₂ |
| Resolution (Electrochemical) | 0.001–0.1 mg/L |
| Resolution (Spectrophotometric) | 0.01 mg/L |
| Accuracy | ±0.15% of full scale or ±0.05 mg/L (whichever is greater) |
| Response Time (T90) | ≤120 s (electrochemical), ≤2.5 min (free chlorine), ≤3.5 min (total chlorine) |
| Operating Environment | 0–60 °C, <95% RH (non-condensing), vibration-free, well-ventilated indoor space |
| Power Supply | AC 100–240 V / DC 18–36 V |
| Power Consumption | ≤120 W |
| Enclosure Rating | IP65/IP66 |
| Output Interfaces | RS-232, RS-485, 4–20 mA analog output |
| Data Storage Capacity | 14,000 records |
| Auto-calibration & Self-diagnostic Functions | Yes |
| Sampling Interval | Programmable from 1 to 999 minutes |
| Brand | YST (Dalian Yist Instrument Co., Ltd.) |
|---|---|
| Origin | Liaoning, China |
| Model | YST909B-CH980 |
| Measurement Range | 0–10 mg/L free chlorine |
| Accuracy | ±2% FS (0–5 mg/L) |
| Response Time | ≤60 s (T90) |
| Zero Drift | ≤±0.05 mg/L over 30 days |
| Span Drift | ≤±2% FS over 30 days |
| Operating Temperature | 0–50 °C |
| Relative Humidity | ≤85% RH (non-condensing) |
| Power Supply | AC 220 V ±10%, 50 Hz |
| Output Signals | 4–20 mA analog output |
| Data Storage | 6-month timestamped history (local), USB export supported |
| Brand | YST (Dalian Yist) |
|---|---|
| Origin | Liaoning, China |
| Model | YST909B-CH980 |
| Measurement Principle | Modified DPD Colorimetry + Membrane-Amperometric Sensor |
| Range | 0.01–10 mg/L Free Chlorine |
| Accuracy | ≤±0.01 mg/L (0.01–1 mg/L range) |
| Drift | ≤±0.03 mg/L over 72 h |
| Power Supply | AC 220 V ±10%, 50 Hz (solar-compatible option available) |
| Output | 4–20 mA analog + RS485 Modbus RTU |
| Environmental Rating | IP65 |
| Operating Temperature | 0–50 °C |
| Relative Humidity | 10–90% RH (non-condensing) |
| Data Storage | Internal logging with trend report export capability |
| Compliance | GB/T 5750.11–2006 |
| Brand | YST (Dalian Yist Environmental Technology Co., Ltd.) |
|---|---|
| Origin | Liaoning, China |
| Model | YST909B-CH980 |
| Measurement Range | Free Chlorine 0–5 mg/L (extendable to 0–20 mg/L), Total Chlorine 0–10 mg/L (extendable to 0–50 mg/L) |
| Resolution | 0.01 mg/L |
| Accuracy | ±2% FS or ±0.02 mg/L (whichever is greater) |
| Response Time | ≤60 s (T90) |
| Operating Temperature | 0–50 °C |
| Humidity | 10–90% RH (non-condensing) |
| Power Supply | AC 220 V ±10%, 50 Hz or DC 12–24 V |
| Output Signals | 4–20 mA analog, RS485 digital (Modbus RTU protocol) |
| Ingress Protection | IP65 |
| Calibration | Automatic (programmable interval) or manual |
| Brand | YST (Dalian Yist Instrument Co., Ltd.) |
|---|---|
| Origin | Liaoning, China |
| Model | YST909B-CH980 |
| Measurement Range | 0–1 mg/L / 0–5 mg/L / 0–10 mg/L (selectable) |
| Resolution | 0.001 mg/L (low range), 0.01 mg/L (mid/high range) |
| Repeatability | ≤1% FS |
| Response Time (T90) | ≤60 s |
| Operating Temperature | Indoor: 0–50°C |
| Outdoor Explosion-Proof | −10–60°C |
| Humidity | ≤90% RH (non-condensing) |
| Sample Temperature | 0–50°C |
| Sample Pressure | 0.1–0.6 MPa |
| Output Signals | 4–20 mA analog, RS485/RS232 (Modbus RTU) |
| Alarm Outputs | 2 relay outputs (NO/NC, 220 VAC / 5 A) |
| Power Supply | AC 220 V ±10%, 50 Hz or DC 24 V |
| Sampling Modes | Flow-through (50–300 mL/min) or Immersion |
| Accuracy | ±2% FS (full scale) |
| Zero Drift (30 days) | ≤±0.05 mg/L |
| Span Drift (30 days) | ≤±2% FS |
| Auto Temperature & pH Compensation | Yes |
| Data Storage Capacity | >80,000 records |
| Update Rate | Up to 1 Hz |
| Brand | Dalian YST |
|---|---|
| Origin | Liaoning, China |
| Model | YST909B-CH980 |
| Measurement Range | 0–1 mg/L / 0–5 mg/L / 0–10 mg/L (selectable) |
| Resolution | 0.001 mg/L (low range), 0.01 mg/L (mid/high range) |
| Repeatability | ≤1% |
| Response Time (T90) | ≤60 s |
| Operating Temperature | 0–50°C (indoor), –10–60°C (outdoor explosion-proof version) |
| Humidity | ≤90% RH (non-condensing) |
| Sample Temperature | 0–50°C |
| Sample Pressure | 0.1–0.6 MPa |
| Output Signals | 4–20 mA, RS485/RS232 (Modbus RTU) |
| Relay Outputs | 2 configurable (NO/NC, 220 VAC / 5 A) |
| Power Supply | AC 220 V ±10%, 50 Hz or DC 24 V |
| Sampling Modes | Flow-through (50–300 mL/min) and Immersion |
| Zero Drift | ±0.05 mg/L over 30 days |
| Span Drift | ±2% FS over 30 days |
| Compensation | Automatic temperature and pH compensation |
| Turbidity Tolerance | ≤100 NTU |
| pH Range for Stable Operation | 6–9 |
| Brand | YST (Dalian Yisite) |
|---|---|
| Origin | Liaoning, China |
| Model | YST909B-CH980 |
| Measurement Range | 0–1 mg/L / 0–5 mg/L / 0–10 mg/L (selectable) |
| Resolution | 0.001 mg/L (low range), 0.01 mg/L (mid/high range) |
| Repeatability | ≤1% |
| Response Time (T90) | ≤60 s |
| Operating Temperature | 0–50°C (indoor), –10–60°C (outdoor explosion-proof version) |
| Humidity | ≤90% RH (non-condensing) |
| Sample Temp. | 0–50°C |
| Sample Pressure | 0.1–0.6 MPa |
| Output | 4–20 mA analog, RS485/RS232 (Modbus RTU) |
| Relay Outputs | 2 configurable (NO/NC, 220 VAC/5 A) |
| Power Supply | AC 220 V ±10%, 50 Hz or DC 24 V |
| Sampling Modes | Flow-through (50–300 mL/min) and Immersion |
| Auto-Cleaning | Yes |
| Compliance | Designed for ISO 9001-manufactured systems |
| Brand | YUFENGRUILIN |
|---|---|
| Model | YFR-105 |
| Measurement Principle | Diffusion-type scintillation cell |
| Detection Range | 5–100,000 Bq/m³ |
| Minimum Detectable Concentration | 5 Bq/m³ |
| Uncertainty | ±15% (k=2) |
| Response Time | ≤30 min (typical), down to 10 min under optimized conditions |
| Power Supply | Rechargeable 5000 mAh Li-ion battery (48 h continuous operation) + AC adapter |
| Operating Environment | −10 °C to +40 °C, ≤90% RH |
| Dimensions | 140 × 170 × 60 mm |
| Weight | 0.8 kg |
| Data Storage | 19,999 measurement records |
| Communication Options | Optional RS-485 interface (customizable for continuous online monitoring), optional Bluetooth printer support |
| Brand | YUFENGRUILIN |
|---|---|
| Origin | Shandong, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | YFR-800A |
| Instrument Category | Alpha Spectrometry Sample Preparation System |
| Instrument Type | Laboratory Benchtop Unit |
| Sample Form | Aqueous Solutions |
| Input Voltage | 220 V ±10% AC, 50 Hz |
| Power Consumption | 200 W |
| Electrolysis Current Range | 0.1–5.0 A (adjustable in 0.02 A increments) |
| Current Stability | < ±0.2 A under load |
| Current Display Resolution | 0.01 A (LCD) |
| Electrode Rotation Speed | 60–600 rpm (continuously adjustable) |
| Speed Stability | ±5% (torque-dependent) |
| Speed Drift | < 1 rpm |
| Speed Display | Digital rpm readout (LCD) |
| Electrode Material | XM150 Platinum Disk Electrode with Protective Cap |
| Anode/Cathode Configuration | Rotating Pt anode + Fixed stainless steel cathode disk |
| Ventilation Rate | 200 L/min |
| Operating Temperature | 0–45 °C |
| Storage Temperature | −25–60 °C |
| Dimensions (W×H×D) | 325 × 650 × 325 mm |
| Weight | 7 kg |
| Construction Materials | Polyethylene terephthalate (PET), polyoxymethylene (POM), nylon, PVC, stainless steel, copper, nickel-plated brass |
| Front Panel | AG4 anodized aluminum |
| Safety | Zero-current shutdown on main power disconnection |
| Included Accessories | 2 × Pt wire electrodes, 50 electroplating disks, adjustable electrode holder, sample bottle fixtures (20 mL & 50 mL options), passive timer (1 min–9 h 59 min with audible alert), high-flow ventilation option available |
| Brand | YunJingTianHe |
|---|---|
| Origin | Shandong, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | TH-WS485 |
| Power Supply | DC 12 V |
| Power Consumption | < 0.1 W |
| Operating Temperature Range | −30 to +70 °C |
| Communication Interface | RS-485 |
| Operating Current | 8 mA @ 12 V DC |
| Minimum Data Interval | 60 s |
| Soil Temperature Measurement Range | −30 to +70 °C |
| Soil Temperature Accuracy | ±0.3 °C (−10 to +50 °C) |
| Soil Temperature Resolution | 0.01 °C |
| Soil Volumetric Water Content (VWC) Range | 0–100 % |
| VWC Accuracy | ±3 % (for loam soils) |
| VWC Resolution | 0.01 % |
| Calibration Requirement | Site-specific calibration recommended for high-organic-matter soils (>12 % SOC) or high-clay soils (>45 % clay content) |
| Brand | Yuntang |
|---|---|
| Origin | Shandong, China |
| Manufacturer Type | OEM/ODM Manufacturer |
| Country of Origin | China |
| Model | YT-BCMn |
| Measurement Principle | Potassium Permanganate Oxidation with ORP Endpoint Detection |
| Instrument Type | Field-Deployable Laboratory Analyzer |
| Range | 0.25–25 mg/L (multi-range auto-switching) |
| Repeatability | <0.5% RSD |
| Accuracy | ±5% of reading |
| LOD | 0.4 mg/L |
| Resolution | 0.001 mg/L |
| Compliance | GB/T 11892–1989 |
| Display | 8″ HD TFT touchscreen (1024×768) |
| OS | Android 7.1.1 |
| Power | 48 V / 8 Ah Li-ion battery (≥6 h continuous dual-mode operation) |
| Dimensions | 430 × 350 × 200 mm |
| Weight | 11 kg |
| Brand | Yuntang |
|---|---|
| Origin | Shandong, China |
| Manufacturer Type | Direct Manufacturer |
| Product Category | Domestic |
| Model | YT-BOD |
| Instrument Type | Portable BOD Analyzer |
| Measurement Principle | Mercury-Free Pressure Differential Method |
| Measurement Range | 0–4000 mg/L |
| Detection Limit | 5 mg/L |
| Accuracy | ≤5% or ±1 mg/L (at 3.55 hPa) |
| Single-Sample Measurement Time | 8 min |
| Repeatability | 3% |
| Resolution | 0.01 mg/L |
| Data Logging Interval | 5 min – 24 h (user-configurable) |
| Incubation Temperature | 20 ± 1 °C |
| Incubation Duration | 1–30 days (programmable) |
| Sample Vessel Volume | 580 mL |
| Number of Parallel Channels | 6 independent terminals |
| Power Supply | AC 220 V ±10%, 50–60 Hz |
| Dimensions (w×d×h, incl. bottles) | 324 × 335 × 350 mm |
| Data Storage Capacity | ≥10 years of measurement records |
| Connectivity | Bluetooth (terminal-to-host), Wi-Fi (cloud upload), USB export |
| Built-in Thermal Printer | Yes |
| Operating System | Android-based UI |
| Display | 7-inch capacitive touchscreen |
| Battery Life (per terminal) | >2 years |
| Compliance Standards | HJ 505–2009, JJG 824–1993 |
| Brand | Yuntang |
|---|---|
| Origin | Shandong, China |
| Manufacturer Type | OEM Manufacturer |
| Country of Origin | China |
| Model | YT-JSD2 |
| Max Load | 100 kg (also displayable in N and lb) |
| Resolution | 0.01 kg |
| Accuracy | ±1% FS |
| Measurement Depth | 0–450 mm |
| Power Supply | Rechargeable Ni-MH battery pack |
| Battery Runtime | 6–8 hours continuous operation |
| Temperature Drift | 0.2 µV/°C (0–60 °C) |
| Zero Drift | ≤0.1 %FS / 8 h |
| Calibration Range | Full-scale calibration |
| Operating Temperature | 0–60 °C |
| Operating Humidity | ≤80 % RH (non-condensing) |
| Overload Capacity | 150 % FS |
| Data Storage | 447 values |
| Auto-Power-Off | Adjustable from 10 to 90 minutes |
| Gravity Compensation | User-configurable local g-value |
| Peak Hold & Auto-Peak Modes | Yes |
| USB Data Export | Yes |
| Backlit LCD Display with Invert Function | Yes |
| Battery Level Indicator | 3-level icon |
| Brand | Yuntang |
|---|---|
| Origin | Shandong, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | YT-S |
| Soil Volumetric Water Content Range | 0–100% |
| Accuracy | ±2% (0–50%), ±3% (50–100%) |
| Resolution | 0.1% |
| Interchangeability Error | <3% |
| Repeatability Error | <1% |
| Response Time | <1 s |
| Stabilization Time | 1 s |
| Sensing Volume | Cylinder, Ø10 cm × H10 cm |
| Dimensions | 204 × 100 × 36 mm |
| Weight | 0.3 kg |
| Data Storage Capacity | 300,000 records |
| Display | Color LCD |
| Connectivity | USB + 4G wireless upload to cloud platform |
| Software | Free PC software with Excel export, curve plotting, and threshold-based color-coded alerting |
| Brand | Yuntang |
|---|---|
| Origin | Shandong, China |
| Manufacturer Type | Manufacturer |
| Country of Origin | China |
| Model | YT-TP |
| Detection Parameter | Total Phosphorus |
| Instrument Type | Portable |
| Measurement Principle | Spectrophotometry (Ammonium Molybdate Method per GB 11893-89) |
| Detection Range | 0–30 mg/L (segmented) |
| LOD | 0.02 mg/L |
| Accuracy | ±5% FS |
| Stability | <0.5% / 20 min |
| Repeatability | <0.5% RSD |
| Optical Drift | ≤0.002 A within 20 min |
| Light Source | High-brightness imported LED with auto-calibration |
| Display | 10.1″ color TFT touchscreen |
| OS | Android 7.1.1 |
| Data Storage | 8 million records with time-based indexing |
| Connectivity | Wi-Fi, RJ45, Bluetooth, mobile hotspot, USB 2.0 |
| Power Supply | AC 220 V ±10%, 50 Hz |
| Dimensions | 444 × 303 × 173 mm |
| Weight | 5.2 kg (net, excluding battery/adapter) |
| Operating Environment | 5–40 °C, RH <85% (non-condensing) |
| Printer | Built-in thermal line printer with QR code support |
| Compliance | GB 11893-89 |
| Brand | Yuntang |
|---|---|
| Origin | Shandong, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | YT-TRA, YT-TR2 |
| Price Range | USD 215–720 (FOB) |
| Instrument Type | Portable |
| Detection Channels | 12 |
| Test Scope | Soil nutrients, fertilizer composition, plant tissue, water quality, food safety, and environmental parameters |
| Brand | Yuntang |
|---|---|
| Origin | Shandong, China |
| Manufacturer Type | OEM/ODM Producer |
| Country of Origin | China |
| Model | YT-TY / YT-TY+ |
| Price Range | USD 280 – 420 (FOB) |
| Measurement Parameters | Volumetric Water Content (0–100% m³/m³, ±2% accuracy in 0–50%, ±3% in 50–100%), Soil Temperature (−40 to +120 °C, ±0.2 °C), Electrical Conductivity (0–20 mS/cm, ±2%), pH (0–14, ±0.2), Resolution: 0.1% (moisture), 0.1 °C (temp), 0.1 mS/cm (EC), 0.1 (pH) |
| Sensor Integration | Tri-functional probe (moisture/temperature/EC), separate pH composite electrode with ATC |
| Data Logging | Internal storage up to 300,000 records, user-configurable sampling interval, auto power-loss protection |
| Connectivity | USB data export, optional 4G LTE module for cloud upload to web-based agricultural analytics platform |
| Power | Rechargeable Li-ion battery + AC adapter |
| Dimensions | 100 × 210 × 35 mm |
| Compliance | Designed per ISO 11277 (soil physical analysis), ASTM D4959 (soil EC), and GLP-aligned data integrity practices (audit trail, timestamped records, user-defined metadata) |
| Brand | Yuntang |
|---|---|
| Origin | Shandong, China |
| Manufacturer Type | Direct Manufacturer |
| Origin Category | Domestic (China) |
| Model | YT-TY / YT-WSYP |
| Price Range | USD 280 – 380 |
| Measurement Parameters | Volumetric Water Content (0–100 % m³/m³, ±2 % accuracy in 0–50 % range), Soil Temperature (−40 to +120 °C, ±0.2 °C), Electrical Conductivity (0–20 mS/cm, ±2 %), pH (0–14, ±0.2), Resolution: 0.1 % (moisture), 0.1 °C (temp), 0.1 mS/cm (EC), 0.1 (pH) |
| Sensor Integration | Tri-functional probe (moisture/temperature/EC), separate temperature-compensated pH composite electrode |
| Data Logging | Up to 300,000 records, user-configurable sampling interval, auto-recognition of connected sensors |
| Connectivity | USB data export, optional 4G module for cloud upload to agricultural IoT platform |
| Power | Rechargeable Li-ion battery + AC adapter |
| Dimensions | 10 × 21 × 3.5 cm |
| Compliance | Designed for field-deployable environmental monitoring per ISO 11277 (soil physical analysis), ASTM D5891 (soil moisture by TDR/FDR principles), and GLP-aligned data integrity practices |
| Brand | Yuntang |
|---|---|
| Origin | Shandong, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | YT-WLY |
| Pricing | Available Upon Request |
| Detection Limit | ≤0.01 ng/mL (3σ definition) |
| Uranium Measurement Range | 0–20 ng/mL (extendable to 100 ng/mL via dilution) |
| Linearity | R² ≥ 0.999 |
| Precision | RSD ≤ 5% |
| Stability | ≤7% RSD over 8 h at 2 ng/mL post 1-h warm-up |
| Data Storage | 4,000 measurement records |
| Interface | USB 2.0, 100Base-T4 Ethernet |
| Display | 7-inch color TFT touchscreen |
| Printer | Integrated thermal printer (57 mm × 40 mm paper) |
| Power Supply | 220 V ±10%, 50 Hz |
| Dimensions | 450 × 350 × 185 mm |
| Net Weight | 10 kg |
| Brand | Yuntang |
|---|---|
| Origin | Shandong, China |
| Manufacturer | Yes |
| Country of Origin | China |
| Model | YT-WSY |
| Price Range | USD 170 – 365 |
| Brand | Yuntang |
|---|---|
| Origin | Shandong, China |
| Manufacturer Type | Manufacturer |
| Country of Origin | China |
| Model | YT-WSYPF |
| Price Range | USD 170 – 835 |
| Soil Moisture Range | 0–100% v/v (±2% @ 0–50%, ±3% @ 50–100%) |
| Temperature Range | −40 to +80 °C (±0.5 °C) |
| EC Range | 0–20,000 µS/cm (±3% @ 0–10,000 |
| Salinity Range | 0–50 g/kg (±5%) |
| pH Range | 0–14 (±0.1, 0.01 resolution) |
| Dimensions | 204 × 100 × 36 mm |
| Weight | 0.3 kg |
| Data Storage | 300,000 records |
| Sampling Interval | User-configurable |
| Display | Color LCD |
| Interface | USB |
| Software | Free PC-based data management suite with Excel export, curve plotting, and threshold-based color-coded alerting |
| Brand | ZCBG Scientific |
|---|---|
| Origin | Sichuan, China |
| Model | HJ2600 |
| Concentration Range | ppb to % (v/v) |
| Flow Rate Range | 20–2000 mL/min |
| Dilution Ratio | up to 1:2000 |
| Dilution Accuracy | ±1% |
| Diluent Gas | Ultra-High-Purity Nitrogen (≥99.999%) |
| Primary Standard Compliance | ISO 6145-7 |
| Applicable Standards | HJ 38–2017, HJ 604–2017, HJ 759–2017, HJ 1006–2018 |
| Calibration Gas Compatibility | Multi-component VOC mixtures (e.g., 57-component PAMS), halogenated hydrocarbon blends (e.g., 14-component TO-14/TO-15), and single-component reference standards |
| Brand | Zealquest |
|---|---|
| Origin | Netherlands |
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | WISP Orca |
| Measurement Principle | Simultaneous acquisition of upwelling radiance (Lu), downwelling radiance (Ld), and downwelling irradiance (Ed) via dual-radiance and single-irradiance optical sensors for in-situ water optical property derivation |
| Spectral Range | 220–1100 nm (calibration-dependent) |
| Measurable Parameters | Chlorophyll-a, Phycocyanin (cyanobacterial pigment), Colored Dissolved Organic Matter (CDOM), Secchi depth / transparency, Total Suspended Solids (TSS) |
| Spectral Resolution | 0.43 nm |
| Optical Bandwidth (FWHM) | 4.65 nm |
| Signal-to-Noise Ratio | ≥330:1 |
| Integration Time | 30 µs – 40 s |
| Operating Temperature | 0–55 °C |
| Dimensions | 262 × 201 mm |
| Weight | 1.3 kg |
| Brand | Zealquest |
|---|---|
| Origin | Netherlands |
| Manufacturer Type | Authorized Distributor |
| Product Origin | Imported |
| Model | WISP Station |
| Measurement Principle | Hyperspectral reflectance measurement in visible and near-infrared (350–900 nm) with 4.6 nm spectral resolution |
| Spectral Range | 220–1000 nm |
| Measurable Parameters | Surface reflectance, water color, chlorophyll-a (phytoplankton), phycocyanin (cyanobacteria), algal bloom presence, Secchi depth/turbidity, total suspended matter (TSM), and diffuse attenuation coefficient (Kd) |
| Spectral Resolution | 4.65 nm FWHM |
| Grating | 300 lines/mm, blaze wavelength 300 nm |
| Slit Width | 100 µm |
| Stray Light | < 0.2% |
| Environmental Rating | IP67 enclosure with integrated temperature & humidity logging |
| Data Transmission | Cellular (LTE-M/NB-IoT) to WISPcloud platform |
| Power Supply | Solar panel + rechargeable LiFePO₄ battery |
| Default Sampling Interval | 15 min (configurable down to 2 min) |
| Compliance | Designed for ISO 17025-aligned field calibration workflows |
| Brand | Zetian |
|---|---|
| Origin | Zhejiang, China |
| Manufacturer Type | Original Equipment Manufacturer (OEM) |
| Country of Origin | China |
| Model | GA-5000DN |
| Pricing | Available Upon Request |
| Brand | Easysensor |
|---|---|
| Model | ZG-ST5200 |
| Origin | Jiangsu, China |
| Instrument Type | Online Water Quality Analyzer |
| Compliance | Designed for ASTM D3867, ISO 15681-2, and USP <643> compliant nutrient measurement workflows |
| Detection Principles | Spectrophotometry (NH₃-N: Fluorometric), Flow Injection Analysis (FIA) with segmented microfluidics |
| Power Supply | 12–24 V DC |
| Operating Temperature | 0–40 °C |
| Depth Rating | Up to 10 m (IP68 housing) |
| Data Output | RS485/Modbus RTU, SD card local storage (up to 1 year @ 15-min intervals), optional 4G/LTE telemetry |
| Calibration | Auto-zero and multi-point standard calibration with onboard reagent reservoirs (≥30 days operation per cartridge) |
| Brand | Zhanhai |
|---|---|
| Origin | Jiangsu, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | PAB-6000 |
| Configuration | Dual-Channel or Quad-Channel |
| Detection Principle | Gas Proportional Counting (P-10 gas, 90% Ar + 10% CH₄) |
| Background Count Rate | ≤0.25 cpm per channel (α), ≤0.55 cpm per channel (β) |
| Minimum Detectable Activity (MDA) | ≤0.04 Bq/kg (α), ≤0.12 Bq/kg (β) for 1000-min counting |
| Sample Chamber Dimensions | Ø80 mm × 40 mm (per channel) |
| Detector Type | Ultra-low-background cylindrical proportional counters with active anti-coincidence shielding |
| Power Supply | AC 220 V ±10%, 50 Hz |
| Operating Temperature | 10–35 °C |
| Relative Humidity | ≤85% RH (non-condensing) |
| Data Output | USB 2.0, RS-232 |
| Compliance | GB/T 11682–2002, JJG 853–2013, ISO 8769:2017, ASTM D3648-19 |
| Brand | Zhanhaikeji |
|---|---|
| Origin | Jiangsu, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | HX-F3 |
| Price | USD 2,800 (FOB Jiangsu) |
| Brand | Zhichen Tech |
|---|---|
| Origin | Beijing, China |
| Model | PAS-100 |
| Detection Principle | Broadband Solar Spectral Irradiance-Based Photolysis Frequency (j-value) Calculation |
| Measured Species | NO₂, HONO, HNO₃, HCHO, H₂O₂ (expandable) |
| Optical Collector | Spectralon® diffuser probe (2π sr hemispherical field-of-view) |
| Spectral Range | 280–450 nm |
| Spectral Resolution | ≤0.5 nm (FWHM) |
| Data Output | j(NO₂), j(HONO), j(HNO₃), j(HCHO), j(H₂O₂) in s⁻¹ |
| Integration Time | Adjustable from 10 ms to 10 s |
| Detector | Linear CCD array with thermoelectric cooling |
| Interface | Fiber-optic coupling (600 µm core, UV-enhanced) |
| Environmental Rating | IP65 enclosure |
| Operating Temperature | −20 °C to +50 °C |
| Power Supply | 24 V DC / 50 W max |
| Compliance | ASTM D7930–22 (Standard Practice for Measurement of Photolysis Frequencies), ISO 17025-accredited calibration traceable to NIST SRM 2243 |