Products
Model：
HD-T04
Introduction：
COD, Ammonia Nitrogen, Total Phosphorus and Total Nitrogen Analyzer measures these four parameters in water by the rapid digestion spectrophotometric method per HJ/T399-2007. Widely used for industrial wastewater and environmental monitoring....
The COD, ammonia nitrogen, total phosphorus and total nitrogen analyzer is designed and manufactured with reference to the standard "Rapid digestion spectrophotometric method (HJ/T399-2007)" and is applicable to many domestic and international testing standards. It mainly detects COD, ammonia nitrogen, total phosphorus and total nitrogen in water quality and also provides intelligent data analysis, displaying data in charts and lists for clear analysis. It adopts a high-definition color LCD touch screen, an Android intelligent operating system, a Chinese display interface and a Chinese/English keyboard, with humanized operation for simpler use. It is standard-equipped with an intelligent 28-hole dual-temperature-zone rapid digester for simpler and more convenient use.
It is widely applicable to the detection of wastewater in various industries (industrial wastewater, municipal sewage, domestic sewage and surface water of rivers and lakes), and can meet various needs of different users. It can be used for monitoring industrial wastewater from the chemical, petroleum, coking, papermaking, metallurgy, brewing and pharmaceutical industries, as well as various domestic sewage.
| 1 | Brand-new Android 7.1.1 intelligent operating system with a humanized interface, faster operation and stronger stability. |
| 2 | 8-inch LCD touch screen with a humanized interface for intuitive and simple readings. |
| 3 | Precision colorimetric cell design: a consistent light source eliminates result errors caused by light-source deviation, making detection more accurate. |
| 4 | The light source uses imported ultra-bright LEDs, and the brightness can be automatically adjusted and calibrated. |
| 5 | Supports 10 mm, 30 mm and 50 mm cuvette colorimetry and φ16 mm tube colorimetry, providing multiple options to ensure measurement accuracy. |
| 6 | Wireless communication: supports WIFI, RJ45 and mobile hotspot networking; test data can also be exported via a USB drive. |
| 7 | Multi-functional sample management: samples can be named in Chinese and English, facilitating sample recording and data storage. |
| 8 | The instrument permanently stores 8 million data sets; for convenient retrieval of large amounts of data, time-based search and arbitrary selection for analysis are supported. |
| 9 | Equipped with a supervisory cloud platform: data can be uploaded via LAN and the Internet, and can also be docked and uploaded to environmental supervision department platforms. |
| 10 | Built-in thermal line printer; the printed content is freely selectable (including QR code printing). |
| 11 | AC 220 V; an optional 6 Ah high-capacity rechargeable lithium battery is available for convenient outdoor mobile testing. |
| 12 | Built-in teaching demonstration video: users can watch the built-in operating video while performing experiments, making it easier to get started. |
| 13 | The product firmware can be upgraded later. |
| Indication error | ≤±5% |
| Instrument stability | <0.5% |
| Instrument repeatability | <0.5% |
| Photochemical stability | Drift ≤0.002 A within 20 min (100,000-hour lifetime) |
Detection performance for each parameter:
| Parameter | Detection method / Standard | Measuring range / Detection limit |
| COD | Rapid COD digestion spectrophotometry (HJ/T399-2007) | 0-15,000 mg/L (segmented); detection limit 3 mg/L |
| Ammonia nitrogen | Nessler's reagent / salicylic acid spectrophotometry (HJ535-2009 / HJ536-2009 / JJF 2289-2025) | 0.2-200 mg/L (segmented) / 0.025-25 mg/L (segmented) |
| Total phosphorus | Ammonium molybdate spectrophotometry (GB 11893-89) | 0-30 mg/L (segmented); detection limit 0.02 mg/L |
| Total nitrogen | Chromotropic acid spectrophotometry | 0-200 mg/L (segmented); detection limit 0.5 mg/L |
| Colorimetric method | Colorimetric tube (16 mm digestion-colorimetric integrated tube); cuvette (10 mm, 30 mm, 50 mm) |
| Operating system | Android 7.1.1 intelligent operating system |
| Operating interface | Chinese or English interface |
| Display | 8-inch (1024×768) high-definition color LCD touch screen |
| Network interface | USB2.0, WiFi, Bluetooth, hotspot, RJ45 |
| Cloud platform | Built-in supervision platform; with a wired/wireless network, results are directly transmitted to the environmental safety supervision platform |
| Printer | Thermal line printer |
| Data storage | 8 million sets, freely callable and viewable |
| Data export format | Excel |
| Instrument dimensions | 367×243×125 mm |
| Instrument weight | 5.3 kg |
| Ambient temperature | (5-40)℃ |
| Ambient humidity | Relative humidity <85% (non-condensing) |
| Rated power | 10 W |
| Power supply | AC220V±10%/50Hz |
| Configurable | High-capacity lithium battery |
| Display | 8-inch HD color touch screen |
| Digestion quantity | 28 (dual temperature zone / 14 samples per zone, independent heating) |
| Temperature control mode | Intelligent PID temperature control |
| Temperature range | Room temperature to 200℃, adjustable |
| Heating speed | Rises to 165℃ within 10 min |
| Digestion capacity | 0-10 mL |
| Digestion hole diameter | Φ16 mm / 10 mL digestion-colorimetric tube |
| Tube depth | 55 mm |
| Temperature control accuracy | ±0.5℃ |
| Temperature control time | 0-999 min (user-settable) |
| Preset digestion modes | COD, total phosphorus, total nitrogen, permanganate, sulfate, formaldehyde |
| Custom digestion modes | 3 |
| Constant-temperature prompt | Supported |
| Digestion-complete prompt | Supported |
| Alarm mode | Buzzer alarm |
| Safety protection | Dual protection (over-temperature protection + protective cover protection) |
| Power consumption | <1000 W |
| Ambient temperature | (5-40)℃ |
| Relative humidity | ≤85% (non-condensing) |
| Dimensions | 367×251×176 mm (L×W×H) |
| Weight | <5.7 kg |
| Power supply | AC (220±22) V, (50±0.5) Hz |
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