Environmental Monitoring Instruments
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| Brand | Shenchanghong |
|---|---|
| Origin | Guangdong, China |
| Manufacturer Type | Direct Manufacturer |
| Model | PCHPA-303 |
| Instrument Type | Portable/HANDHELD Water Quality Analyzer |
| Detection Parameter | Aniline in Water |
| Measurement Range | 0.03–5.00 mg/L (dilution-enabled for out-of-range samples) |
| Resolution | 0.01 mg/L |
| Accuracy | ≤5% FS |
| Repeatability | ≤3% |
| Optical Stability | ≤0.002 A/20 min |
| Dimensions (H×W×D) | 266 × 200 × 130 mm |
| Weight | 500 g |
| Power Consumption | 30 W |
| Data Storage | 199 measurement records with timestamp (YYYY-MM-DD hh:mm:ss), absorbance & transmittance values, plus 10 programmable calibration curves |
| Light Source | Imported high-intensity LED (100,000 h lifetime) with narrow-band optical filter system |
| Housing Material | Molded ABS with corrosion resistance |
| Microcontroller | Low-power 16-bit MCU |
| Compliance | Designed per GB/T 5750.8–2023 (Standard Methods for Examination of Drinking Water – Organic Parameters), aligned with ISO 10523 and EPA Method 550 for aniline quantification via spectrophotometric derivatization |
| Brand | Shenchanghong |
|---|---|
| Origin | Guangdong, China |
| Manufacturer Type | Manufacturer |
| Country of Origin | Domestic (China) |
| Model | PCHPB-150 |
| Instrument Type | Portable |
| Detection Principle | Photometric Method (Colorimetric Absorption) |
| Target Analyte | Lead (Pb²⁺) |
| Analysis Time | 20 min |
| Accuracy | ±5% of Full Scale (F.S.) |
| Resolution | 0.01 mg/L |
| Measurement Range | 0.01–0.30 mg/L |
| Repeatability | ≤3% RSD |
| Dimensions | 80 × 230 × 55 mm |
| Weight | 500 g |
| Power Supply | 4 × AA batteries |
| Operating Temperature | 5–40 °C |
| Relative Humidity | ≤85% RH |
| Protection Rating | IP65 |
| Data Storage | 20 calibration curves + 199 measurement records with timestamp (YYYY-MM-DD HH:MM:SS), including concentration, absorbance, and transmittance values |
| Brand | Shenchanghong |
|---|---|
| Origin | Shenzhen, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | PCHSIO2-260 |
| Price | Upon Request |
| Measurement Range | 0.01–5.00 mg/L |
| Accuracy (Abs. Error) | ≤±5% |
| Repeatability | ≤3% |
| Optical Drift | <0.002 A in 20 min |
| Dimensions | 80 mm × 230 mm × 55 mm |
| Weight | 500 g |
| Operating Temperature | 5–40 °C |
| Relative Humidity | ≤85% |
| Power Supply | 4 × AA batteries |
| Data Storage | 20 calibration curves + 199 timestamped measurements (year/month/day/hour/minute/second, absorbance, transmittance, SiO₂ concentration) |
| Protection Rating | IP65 |
| Optical System | Monochromatic cold light source with narrow-band interference filter |
| Brand | Shenchanghong |
|---|---|
| Origin | Guangdong, China |
| Manufacturer Type | Manufacturer |
| Country of Origin | China |
| Model | PCHTA-211 |
| Price | Upon Request |
| Measurement Range | 0–1000 mg/L as CaCO₃ |
| Accuracy | ≤ ±5% FS |
| Repeatability | ≤ 3% RSD |
| Optical Stability | Drift < 0.002 A within 20 min |
| Dimensions (W×D×H) | 80 × 230 × 55 mm |
| Weight | 500 g |
| Operating Temperature | 5–40 °C |
| Relative Humidity | ≤ 85% RH |
| Power Supply | AC 220 V ± 10%, 50 Hz ± 0.5 Hz |
| Protection Rating | IP65 |
| Light Source | High-brightness, long-life (100,000 h) cold LED with narrow-band interference filter |
| Display | LCD with backlight |
| Data Storage | 10 calibration curves + 199 timestamped measurement records (including absorbance, transmittance, and alkalinity concentration in mg/L as CaCO₃) |
| Data Protection | Built-in non-volatile memory with power-loss retention |
| Brand | Shenchanghong |
|---|---|
| Origin | Shenzhen, China |
| Manufacturer Type | Direct Manufacturer |
| Product Origin | Domestic (China) |
| Model | PCHTCR-140 |
| Instrument Type | Portable |
| Detection Principle | Spectrophotometry (Diphenylcarbazide Method) |
| Target Analyte | Total Chromium (Cr(III) + Cr(VI)) |
| Measurement Range | 0.02–1.00 mg/L |
| Accuracy | ≤ ±5% |
| Repeatability | ≤ 3% |
| Optical Drift | < 0.002 A over 20 min |
| Digestion Temperature Range | Ambient to 180 °C (default Cr digestion: 120 °C) |
| Temperature Control Accuracy | ±1 °C |
| Digestion Time Setting Range | 1–999 min |
| Standard Digestion Duration | 30 min |
| Batch Capacity | 16 samples |
| Resolution | 0.02 mg/L |
| Display | Backlit LCD with Chinese menu interface |
| Data Storage | 10 calibration curves + 199 measurement records (non-volatile memory) |
| Power Supply | Rechargeable battery (standby >6 months) |
| Enclosure | IP65-rated molded ABS housing |
| Connectivity | USB port for data export and PC communication |
| Dimensions (Analyzer) | 80 × 230 × 55 mm |
| Dimensions (Digestor) | 105 × 160 × 90 mm |
| Weight | ≤1.2 kg (total system) |
| Brand | Shenchanghong |
|---|---|
| Origin | Guangdong, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | PCHVP-301 |
| Instrument Type | Portable/Handheld Water Quality Analyzer |
| Measured Parameter | Volatile Phenol in Water |
| Measurement Range | 0.20–10.0 mg/L (dilution applicable beyond range) |
| Minimum Resolution | 0.01 mg/L |
| Accuracy | ≤5% FS |
| Repeatability | ≤3% |
| Optical Stability | ≤0.002 A/20 min |
| Dimensions | 80 mm × 230 mm × 55 mm |
| Power Consumption | 30 W |
| Weight | 500 g |
| Brand | Shenchanghong |
|---|---|
| Origin | Shenzhen, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | PCHYN-230 |
| Price | Upon Request |
| Measurement Range | 0.02–5.00 mg/L |
| Accuracy | ≤±5% FS |
| Repeatability | ≤3% RSD |
| Optical Drift | <0.002 A in 20 min |
| Dimensions | 80 mm × 230 mm × 55 mm |
| Weight | 500 g |
| Operating Temperature | 5–40 °C |
| Relative Humidity | ≤85% RH |
| Power Supply | 4 × AA batteries |
| IP Rating | IP65 |
| Data Storage | 20 calibration curves + 199 timestamped measurement records (including absorbance, transmittance, and nitrite concentration with yyyy-mm-dd hh:mm:ss) |
| Brand | Shenchanghong |
|---|---|
| Origin | Guangdong, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | PCHYN-231 |
| Instrument Type | Portable / Handheld Water Quality Analyzer |
| Measured Parameter | Nitrate (NO₃⁻) in Water |
| Measurement Range | 0.02–10.00 mg/L |
| Accuracy | ±5% FS |
| Repeatability | ≤3% RSD |
| Optical Drift | <0.002 A over 20 min |
| Dimensions | 80 × 230 × 55 mm |
| Weight | 500 g |
| Operating Temperature | 5–40 °C |
| Relative Humidity | ≤85% RH |
| Power Supply | 4 × AA batteries |
| Data Storage | 20 calibration curves + 199 timestamped measurement records (including absorbance, transmittance, and NO₃⁻ concentration with yyyy-mm-dd hh:mm:ss) |
| Enclosure Rating | IP65 |
| Optical System | Monochromatic cold light source with narrow-band interference filter |
| Brand | Shenchanghong |
|---|---|
| Origin | Shenzhen, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | PCHYP-250 |
| Price | Upon Request |
| Measurement Range | 0.01–50.00 mg/L |
| Accuracy | ≤±5% FS |
| Repeatability | ≤3% RSD |
| Optical Drift | <0.002 A in 20 min |
| Dimensions | 80 × 230 × 55 mm |
| Weight | 500 g |
| Operating Temperature | 5–40 °C |
| Relative Humidity | ≤85% RH |
| Power Supply | 4 × AA batteries |
| IP Rating | IP65 |
| Data Storage | 199 timestamped measurements (YYYY-MM-DD hh:mm:ss) + 20 user-defined calibration curves |
| Brand | Shenchanghong |
|---|---|
| Origin | Guangdong, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | PCHYS-240 |
| Price | Upon Request |
| Measurement Range | 5–200.00 mg/L |
| Accuracy | ≤ ±5% FS |
| Repeatability | ≤ 3% RSD |
| Optical Drift | < 0.002 A in 20 min |
| Dimensions | 80 mm × 230 mm × 55 mm |
| Weight | 500 g |
| Operating Temperature | 5–40 °C |
| Relative Humidity | ≤ 85% RH |
| Power Supply | 4 × AA batteries |
| IP Rating | IP65 |
| Data Storage | 20 calibration curves + 199 timestamped measurements (including absorbance, transmittance, and sulfate concentration with yyyy-mm-dd hh:mm:ss) |
| Brand | Shenchanghong |
|---|---|
| Origin | Shenzhen, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | PCHYS-241 |
| Instrument Type | Portable |
| Measurement Range | 0.005–1.000 mg/L |
| Accuracy (Abs. Error) | ≤±5% |
| Repeatability | ≤3% |
| Optical Drift (20 min) | <0.002 A |
| Dimensions | 80 mm × 230 mm × 55 mm |
| Weight | 500 g |
| Operating Temperature | 5–40 °C |
| Relative Humidity | ≤85% |
| Power Supply | 4 × AA batteries |
| IP Rating | IP65 |
| Data Storage | 20 calibration curves + 199 timestamped measurements (year/month/day/hour/minute/second, absorbance, transmittance, concentration) |
| Brand | Shenchanghong |
|---|---|
| Origin | Shenzhen, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | PCHZN-180 |
| Instrument Type | Portable |
| Detection Principle | Photometric (Colorimetric) Method |
| Detection Time | 20 min |
| Accuracy/Precision | ±5% of Full Scale (F.S.) |
| Resolution | 0.2 mg/L |
| Measurement Range | 0.2–3.00 mg/L |
| Repeatability | ≤3% |
| Dimensions | 80 mm × 230 mm × 55 mm |
| Weight | 500 g |
| Power Supply | 4 × AA batteries |
| Operating Temperature | 5–40 °C |
| Relative Humidity | ≤85% RH |
| Protection Rating | IP65 |
| Data Storage | 20 calibration curves + 199 measurement records with timestamp (YYYY-MM-DD hh:mm:ss), concentration, absorbance, and transmittance |
| Brand | Shenchanghong |
|---|---|
| Origin | Guangdong, China |
| Manufacturer Type | Direct Manufacturer |
| Product Origin | Domestic (China) |
| Model | PCOD-810 |
| Instrument Type | Portable |
| Measurement Principle | High-Temperature Sealed Catalytic Digestion + Photometric Colorimetry at Fixed Wavelength |
| Measurement Wavelength | 610 nm (high-range), 420 nm (low-range) |
| Measurement Range | 5–2000 mg/L COD (dilutable beyond range) |
| Accuracy | ≤ ±5% of reading |
| Repeatability | ≤ ±0.3% |
| Detection Limit | 0.1 mg/L |
| Digestion Temperature | 165 °C ± 1.0 °C |
| Digestion Time | 15 min |
| Sample Throughput | 4 samples per batch (16-sample digestion block optional) |
| Chloride Interference Tolerance | ≤ 2000 mg/L Cl⁻ |
| Optical System | Cold LED Light Source with Narrow-Band Interference Filters |
| Data Storage | 500 measurement records with non-volatile memory |
| Calibration Curves | Up to 50 user-programmable or factory-loaded curves |
| Power Supply | Rechargeable Li-ion battery (host) |
| Enclosure Rating | IP65 |
| Dimensions (Host) | 80 × 230 × 55 mm |
| Weight (Host) | 0.5 kg |
| Dimensions (Digestor) | 130 × 120 × 95 mm |
| Weight (Digestor) | 1.0 kg |
| Brand | Shenchanghong |
|---|---|
| Origin | Guangdong, China |
| Manufacturer Type | Direct Manufacturer |
| Product Origin | Domestic (China) |
| Model | PMULP-4C |
| Instrument Type | Portable / Handheld Water Quality Analyzer |
| Measurable Parameters | 30+ water quality parameters via customizable 4-channel photometric detection |
| Wavelength Options | 420, 440, 470, 510, 520, 540, 600, 610, 630, 660, or 700 nm (user-selectable 4 within range) |
| Wavelength Accuracy | ±1 nm (center wavelength) |
| Optical Stability | Absorbance drift < 0.002 A over 20 min |
| Dimensions | 80 mm × 230 mm × 55 mm |
| Weight | 4 kg |
| Data Storage | 10 calibration curves + 199 timestamped measurements (YYYY-MM-DD HH:MM:SS, absorbance, transmittance) |
| Enclosure | Molded ABS housing with IP65 rating |
| Interface | USB port for data export and PC connectivity |
| Display | Large LCD screen with intuitive menu navigation |
| Light Source | Stable cold LED source with narrow-band interference filters |
| [Brand | Shenchanghong |
|---|---|
| Origin | Guangdong, China |
| Manufacturer Type | Direct Manufacturer |
| Product Category | Domestic |
| Model | PMULP-4C / PMULP-8C |
| Instrument Type | Portable / Handheld Water Quality Analyzer |
| Detection Capability | Multi-parameter water quality analysis |
| Wavelength Options | 420, 440, 470, 520, 560, 610, 630, 660, 680, 700 nm (4 or 8 user-selectable wavelengths) |
| Optical Stability | ≤0.002 A / 20 min |
| Wavelength Accuracy | ±1 nm from nominal center wavelength |
| Display | LCD with backlight |
| Power Supply | Rechargeable lithium-ion battery |
| Enclosure Rating | IP65 |
| Dimensions | 80 × 230 × 55 mm |
| Weight | 500 g |
| Data Interface | USB port for data export to PC] |
| Brand | Shenchanghong |
|---|---|
| Origin | Guangdong, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | PMULP-800 |
| Instrument Type | Portable |
| Temperature Range | 0–100 °C |
| pH Range | 0.00–14.00 |
| Dissolved Oxygen (DO) Range | 0–20.0 mg/L |
| Conductivity Range | 0.00 µS/cm – 199.9 mS/cm |
| Turbidity Range | 0–400 NTU |
| Optical Wavelengths | 420, 440, 470, 520, 540, 560, 610, 630, 660, 680, 700 nm (user-selectable within range) |
| Absorbance Accuracy | ≤±5% FS |
| Repeatability | ≤3% RSD |
| Absorbance Drift | <0.002 A in 20 min |
| Dimensions (Main Unit) | 92 × 185 × 50 mm |
| Weight (Main Unit) | ~0.4 kg |
| Total Kit Weight (incl. case & accessories) | ~1.5 kg |
| Power Supply | Rechargeable Li-ion battery, 7.4 V / 1500 mAh |
| Operating Environment | 5–40 °C, ≤85% RH, low-vibration, non-direct-sunlight |
| Brand | Shenchanghong |
|---|---|
| Origin | Guangdong, China |
| Manufacturer Type | OEM/ODM Manufacturer |
| Country of Origin | China |
| Model | PO3-260 |
| Pricing | Upon Request |
| Measurement Range | 0.01–2.5 mg/L (dilution applicable beyond range) |
| Minimum Resolution | 0.01 mg/L |
| Accuracy | ≤5% FS |
| Repeatability | ≤3% RSD |
| Optical Stability | ≤0.002 A/20 min |
| Dimensions (H×W×D) | 266 × 200 × 130 mm |
| Power Consumption | 30 W |
| Weight | 500 g |
| Brand | Shenchanghong |
|---|---|
| Origin | Guangdong, China |
| Manufacturer Type | OEM Manufacturer |
| Regional Classification | Domestic (China) |
| Model | PSS-200 |
| Instrument Type | Portable |
| Measurement Principle | Colorimetric Photometry (Turbidimetric Absorption at 850 nm) |
| Range | 0–1000 mg/L |
| Accuracy | ≤ ±2% FS |
| Repeatability | ≤ ±2% FS |
| Resolution | 0.01 mg/L |
| Power Supply | Rechargeable Lithium-ion Battery |
| Weight | 500 g |
| Dimensions | 80 × 230 × 55 mm |
| Optical System | Narrow-band Interference Filter + Imported Long-life LED Light Source |
| Data Storage | 20 Calibration Curves + 199 Measurement Records |
| Interface | USB 2.0 |
| Enclosure Rating | IP65 |
| Housing Material | Molded ABS Polymer |
| Data Protection | Auto-Save with Power-Fail Backup |
| Brand | Shenchanghong |
|---|---|
| Origin | Guangdong, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | PWN-820A |
| Instrument Type | Portable |
| Measurement Principle | UV-Vis Absorption Spectrophotometry (Dual-Wavelength) |
| Wavelengths | 610 nm (COD), 420 nm (Ammonia-N) |
| COD Range | 0–2000 mg/L (dilutable to 5 mg/L) |
| Ammonia-N Range | 0.02–25 mg/L |
| Accuracy | ≤ ±5% for COD |
| Repeatability | ≤ ±3% |
| Detection Limit | 0.1 mg/L (COD), 0.02 mg/L (Ammonia-N) |
| Measurement Time | ≤ 20 min per batch |
| Batch Capacity | 10 samples |
| Optical Stability | Drift < 0.002 A within 20 min |
| Chloride Interference Tolerance | ≤ 2000 mg/L (for COD) |
| Dimensions (Analyzer) | 80 × 230 × 55 mm |
| Dimensions (Digester) | 105 × 160 × 90 mm |
| Weight | 500 g (analyzer only) |
| Protection Rating | IP65 |
| Power | Rechargeable Li-ion battery (6-month standby) |
| Data Storage | 199 measurement records with timestamp (YYYY-MM-DD hh:mm:ss), absorbance & transmittance values |
| Interface | USB port for data export and PC connectivity |
| Housing Material | Molded ABS polymer |
| Brand | Shenchanghong |
|---|---|
| Origin | Guangdong, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | PWN-820B |
| Instrument Type | Portable |
| Measurement Principle | UV-Vis Absorption Spectrophotometry (610 nm) |
| COD Range | 0–2000 mg/L |
| Total Phosphorus Range | 0.00–10.00 mg/L |
| Accuracy | ≤ ±5% (COD & TP) |
| Repeatability | ≤ ±3% |
| Detection Limit | 0.1 mg/L (COD), 0.01 mg/L (TP) |
| Measurement Time | 15 min per batch |
| Batch Capacity | 10 samples |
| Optical Drift | < 0.002 A in 20 min |
| Chloride Interference Tolerance | ≤ 2000 mg/L (for COD) |
| Dimensions (Analyzer) | 80 × 230 × 55 mm |
| Dimensions (Digestor) | 105 × 160 × 90 mm |
| Enclosure Rating | IP65 |
| Power | DC 12 V (AC/DC adapter included) |
| Data Storage | 199 measurement records with timestamp (YYYY-MM-DD hh:mm:ss), plus 30 user-defined calibration curves |
| Interface | USB port for data export and PC connectivity |
| Housing Material | Molded ABS |
| Brand | Shenchanghong |
|---|---|
| Origin | Guangdong, China |
| Manufacturer Type | Manufacturer |
| Product Origin | Domestic (China) |
| Model | PWN-820C |
| Instrument Type | Portable |
| Measurement Principle | UV Absorption Spectrophotometry |
| Wavelength | 410 nm |
| COD Range | 0–2000 mg/L |
| TN Range | 0.05–100 mg/L |
| Accuracy | ≤ ±5% (COD & TN) |
| Repeatability | ≤ ±3% |
| Detection Limit | 0.1 mg/L (COD) |
| Measurement Time | 15 min per batch |
| Batch Capacity | 10 samples |
| Optical Drift | < 0.002 A in 20 min |
| Chloride Interference Tolerance | ≤ 2000 mg/L (for COD) |
| Dimensions (Analyzer) | 80 × 230 × 55 mm |
| Dimensions (Digester) | 105 × 160 × 90 mm |
| Protection Rating | IP65 |
| Data Storage | 199 measurements with timestamp (YYYY-MM-DD hh:mm:ss), plus 30 user-defined calibration curves |
| Interface | USB port for data export and PC connectivity |
| Power | DC 12 V (AC/DC adapter included) |
| Housing Material | Molded ABS |
| Brand | Shenchanghong |
|---|---|
| Origin | Guangdong, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | PWN-820D |
| Instrument Type | Portable |
| Measurement Principle | Colorimetric Method (Nesslerization & Alkaline Persulfate Digestion) |
| Ammonia Nitrogen Range | 0.02–25 mg/L |
| Total Nitrogen Range | 0.05–100 mg/L |
| Detection Limit (NH₃-N) | 0.02 mg/L |
| Accuracy (NH₃-N) | ≤ ±3% ± 0.2 mg/L |
| Accuracy (TN) | ≤ ±5% ± 0.2 mg/L |
| Repeatability | ≤ 3% RSD |
| Optical Drift | < 0.002 A in 20 min |
| Chloride Interference Tolerance | ≤ 2000 mg/L (for COD-compatible digestion module) |
| Dimensions (Analyzer) | 80 × 230 × 55 mm |
| Dimensions (Digestion Unit) | 105 × 160 × 90 mm |
| Batch Capacity | 10 samples per run |
| Analysis Time | ≤ 10 min per sample (post-digestion) |
| Data Storage | 199 measurement records with timestamp (YYYY-MM-DD hh:mm:ss), plus 30 user-defined calibration curves |
| Interface | USB port for data export and PC connectivity |
| Enclosure Rating | IP65 |
| Power | DC 12 V (AC/DC adapter included) |
| Brand | Shenchanghong |
|---|---|
| Origin | Guangdong, China |
| Manufacturer Type | Direct Manufacturer |
| Origin Category | Domestic (China) |
| Model | PWN-820E |
| Instrument Type | Portable |
| Measurement Principle | Colorimetric Method |
| Ammonia Nitrogen Range | 0.02–25 mg/L |
| Total Phosphorus Range | 0.00–10 mg/L |
| Accuracy (Ammonia N) | ≤ ±3% ± 0.2 mg/L |
| Accuracy (Total P) | ≤ ±5% ± 0.2 mg/L |
| Detection Limit (Ammonia N) | 0.02 mg/L |
| Repeatability | ≤ 3% |
| Optical Drift | < 0.002 A within 20 min |
| Chloride Interference Tolerance | ≤ 2000 mg/L (for COD mode, referenced for robustness) |
| Dimensions (Analyzer) | 80 × 230 × 55 mm |
| Dimensions (Digestion Unit) | 105 × 160 × 90 mm |
| Batch Capacity | 4 samples (digestion), 10 measurements (instrument memory queue) |
| Measurement Time | ≤ 10 min per parameter |
| Data Storage | 199 measurement records with timestamp (YYYY-MM-DD hh:mm:ss), plus 30 user-defined calibration curves |
| Interface | USB port for data export and PC connectivity |
| Enclosure Rating | IP65 |
| Power | Dual-mode (AC/DC adapter: 220 V to 12 V DC |
| Brand | Shenchanghong |
|---|---|
| Origin | Guangdong, China |
| Manufacturer Type | Manufacturer |
| Origin Category | Domestic |
| Model | PWN-820F |
| Measurement Parameters | Total Phosphorus (TP) and Total Nitrogen (TN) |
| Instrument Type | Portable |
| Measurement Principle | High-Temperature Alkaline Persulfate Oxidation Coupled with Colorimetric Detection (UV-VIS Spectrophotometry) |
| Measurement Range | TP: 0.00–10.00 mg/L |
| TN | 0.05–100.00 mg/L |
| Accuracy | ≤ ±5% (TP & TN) and ±0.2 mg/L (TP offset) |
| Detection Limit | 0.01 mg/L (TP) |
| Resolution | 0.01 mg/L |
| Repeatability | ≤ 3% RSD |
| Optical Drift | < 0.002 A over 20 min |
| Chloride Interference Tolerance | ≤ 2000 mg/L (as Cl⁻, applicable to COD co-measurement context) |
| Dimensions | Analyzer: 80 × 230 × 55 mm |
| Digestion Unit | 105 × 160 × 90 mm |
| Enclosure Rating | IP65 |
| Data Storage | 30 calibration curves + 199 timestamped measurement records (including absorbance, transmittance, and full datetime metadata) |
| Interface | USB port for data export and PC connectivity |
| Power | DC 12 V (AC/DC adapter included) |
| Housing Material | Molded ABS polymer |
| Brand | Shenchanghong |
|---|---|
| Origin | Guangdong, China |
| Manufacturer Type | OEM/ODM Producer |
| Country of Origin | China |
| Model | PWN-830A |
| Instrument Type | Portable |
| Measurement Principle | UV-Vis Absorption Spectrophotometry (Dual-Wavelength, Fixed-Filter Optical Path) |
| Primary Wavelengths | 610 nm (COD), 420 nm (Ammonia Nitrogen), 700 nm (Total Phosphorus) |
| COD Range | 5–2000 mg/L (dilutable to 10,000 mg/L) |
| Ammonia Nitrogen Range | 0.02–25 mg/L |
| Total Phosphorus Range | 0.00–10 mg/L |
| Accuracy | ≤ ±5% FS (COD & TP), ≤ ±3% FS (NH₃-N) |
| Repeatability | ≤ ±3% RSD |
| LOD | 0.1 mg/L (COD), 0.01 mg/L (NH₃-N), 0.005 mg/L (TP) |
| Measurement Time | 15 min (COD), 30 min (TP), <10 min (NH₃-N post-digestion) |
| Batch Capacity | 4 samples per digestion cycle |
| Digestion Temperature Control | 30–200 °C, PID-regulated, ±0.5 °C stability |
| Digestion Timer | 1–999 min adjustable |
| Optical Drift | <0.002 A over 20 min |
| Data Storage | 199 measurement records with timestamp (YYYY-MM-DD hh:mm:ss), 30 user-defined calibration curves |
| Power Supply | DC 12 V (included AC/DC adapter), battery-ready design |
| Enclosure Rating | IP65 |
| Dimensions (Analyzer) | 80 × 230 × 55 mm |
| Dimensions (Digestion Unit) | 105 × 160 × 90 mm |
| Brand | Shenchanghong |
|---|---|
| Origin | Guangdong, China |
| Manufacturer Type | Manufacturer |
| Country of Origin | China |
| Model | PWN-830B |
| Instrument Type | Portable/HANDHELD Water Quality Analyzer |
| Measured Parameters | COD, Total Phosphorus, Total Nitrogen |
| Measurement Range (COD) | 0–2000 mg/L (dilution applicable) |
| Measurement Range (Total Phosphorus) | 0.00–10 mg/L |
| Measurement Range (Total Nitrogen) | 0.05–100 mg/L |
| Accuracy (COD) | ≤ ±5% |
| Accuracy (Total Phosphorus) | ≤ ±5% or ±0.2 mg/L (whichever is greater) |
| Accuracy (Total Nitrogen) | ≤ ±5% |
| Repeatability | ≤ 3% |
| Optical Drift | < 0.002 A within 20 min |
| Chloride Interference Tolerance (COD) | ≤ 2000 mg/L |
| Dimensions (Analyzer) | 80 mm × 230 mm × 55 mm |
| Dimensions (Digestion Unit) | 105 mm × 160 mm × 90 mm |
| Brand | Shenchanghong |
|---|---|
| Origin | Guangdong, China |
| Manufacturer Type | OEM/ODM Manufacturer |
| Country of Origin | China |
| Model | PWN-830C |
| Instrument Type | Portable/HANDHELD Water Quality Analyzer |
| Measured Parameters | Chemical Oxygen Demand (COD), Ammonia Nitrogen (NH₃-N), Total Nitrogen (TN) |
| Measurement Range | COD 0–2000 mg/L (dilution enabled) |
| Accuracy | COD ≤ ±5% |
| Repeatability | ≤3% RSD |
| Optical Drift | <0.002 A within 20 min |
| Chloride Interference Tolerance (COD) | ≤2000 mg/L Cl⁻ |
| Dimensions | Analyzer 80 × 230 × 55 mm (W×L×H) |
| Enclosure Rating | IP65 |
| Data Storage | 30 calibration curves + 199 timestamped measurement records (YYYY-MM-DD hh:mm:ss, absorbance, transmittance) |
| Interface | USB port for data export and PC connectivity |
| Power | DC 12 V (AC/DC adapter included) |
| Brand | Shenchanghong |
|---|---|
| Origin | Guangdong, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | PWN-830D |
| Instrument Type | Portable / Handheld Water Quality Analyzer |
| Measured Parameters | COD, Ammonia Nitrogen (NH₃-N), Total Phosphorus (TP), Total Nitrogen (TN) |
| Measurement Range | NH₃-N: 0.02–25 mg/L |
| TP | 0.00–10 mg/L |
| TN | 0.05–100 mg/L |
| Accuracy | NH₃-N: ≤±3% ±0.2 mg/L |
| TP | ≤±5% ±0.2 mg/L |
| TN | ≤±5% |
| Repeatability | ≤3% |
| Optical Drift | <0.002 A in 20 min |
| Chloride Interference Tolerance (for COD) | ≤2000 mg/L |
| Dimensions (Analyzer) | 80 × 230 × 55 mm |
| Dimensions (Digester) | 105 × 160 × 90 mm |
| Enclosure Rating | IP65 |
| Data Storage | 30 calibration curves + 199 timestamped measurement records (including absorbance, transmittance, and full datetime stamp) |
| Power | Rechargeable battery with >6 months standby life (low-power 16-bit MCU) |
| Brand | Shenchanghong |
|---|---|
| Origin | Guangdong, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | PWN-840A |
| Instrument Type | Portable |
| Measurement Principle | UV-Vis Absorption Spectrophotometry (Dual-Wavelength) |
| Wavelengths | 340 nm, 420 nm, 610 nm, 700 nm |
| COD Range | 5–2000 mg/L |
| NH₃-N Range | 0.02–25 mg/L |
| Total Phosphorus Range | 0.00–10 mg/L |
| Total Nitrogen Range | 0.05–100 mg/L |
| Accuracy | ≤±5% F.S. (COD, TP, TN) |
| Repeatability | ≤±3% |
| Detection Limit | 0.1 mg/L (COD) |
| Measurement Time | 15 min (COD), 30 min (TP/TN) |
| Batch Capacity | 4 samples (standard), optional 16-sample digestion block |
| Digestion Temp | 120–165 °C |
| Temperature Control Precision | ±0.5 °C |
| Optical Stability | ≤0.002 A/20 min |
| Power Supply | Internal Li-ion battery (host), 12 V DC (car adapter), or 220 V AC |
| IP Rating | IP65 |
| Dimensions (Host) | 80 × 230 × 55 mm |
| Weight (Host) | 0.5 kg |
| Brand | Shenchanghong |
|---|---|
| Origin | Guangdong, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | PWS-1000 |
| Instrument Type | Portable / Handheld Water Quality Analyzer |
| Measured Parameter | Free Available Chlorine in Water |
| Measurement Range | 0.00–100.00 mg/L |
| Accuracy | ≤ ±3% F.S. |
| Repeatability | ≤ 3% |
| Weight | 500 g |
| Dimensions | 80 mm × 230 mm × 55 mm |
| Operating Temperature | 5–40 °C |
| Relative Humidity | ≤ 85% RH |
| Power Supply | 4 × AA batteries |
| Optical System | Cold Light Source with Narrow-Band Interference Filter |
| Data Storage | 20 Calibration Curves + 199 Sample Records (with Timestamp: YYYY-MM-DD HH:MM:SS, Absorbance & Transmittance) |
| Enclosure Rating | IP65 |
| Housing Material | Molded ABS |