| General Specifications |
| Function |
Wet Chemistry Analyzer for Measurement of Concentration of Chemical Oxygen Demand (COD) in Water, following Dichromated Method , according to NIEA W516.56A, US EPA 410.1 and APHA5220D |
| Model |
W3111 |
| Installation |
Freestanding Type |
| Protection Class |
IP65 |
| Dimensions |
H1250* W550* D430mm |
| Range |
0-200 mg/L, to 0-2,000 mg /L , (higher range is available by dilution) |
| Accuracy |
F.S ±3 % |
| Repeatability |
F.S ±3 % |
| Optical Module |
Special LED, dual beams, auto gaining design, 24-bit high-resolution A/D converter, long life span, auto compensation of light intensity, and with system automatic light source abnormal judgment |
| Response Time |
Standard concentration range: 120 minutes per measurement |
| Digestion Time |
User selectable 90 to 120 minutes per measuring cycle.
Digestion temperature 170ºC. |
| Auto Cleaning |
User selectable 1 to 3 times. Every time lasts for 15 minutes |
| Auto Calibration |
Automatic calibration. Can switch to manual calibration, high- and low- point |
| Shutdown Alarm |
• Concentration abnormal alarm (adjustable of high-point)
• System error alarm |
| Display |
7” LCD color touch panel display |
| Self-Diagnosis |
The system is continuously self-diagnosis. The error management helps to identify problems. (Display errors and save historical data) |
| Electrical Conditions |
Power supply ranges:115 / 230 VAC, 50 / 60 Hz，＜500 Watt |
| Certification |
CE Mark (Certificate No. 3X180605.KSIUN08) |
| Language Support |
Chinese, English |
| Sample Conditions |
• Sample temperature: 0 to 45 °C
• Sample flow: Continuous, 50 to 1,000 ml/min
• Sample consumption: 10ml/ analysis nominal
• Sample connection: use external pump connect with 4.75mm Teflon tube
• Suspended solids: 200 microns or less |
Environmental
Conditions |
• Ambient operating temperature: 0 – 60 °C
• Ambient operating humidity: Up to 95 % RH non-condensing |
| Analog Outputs |
1x isolated current output, 4-20mA range. With option of RS485 Modbus |
| Relay Outputs |
1x alarm reply. With the option of extending up to 4 fully user-assignable relays |
