SiO2
Applications
- Power plants
- Ultrapure water treatment
- Cooling water
- Water steam cycle
- Condensate analysis
- High-pressure boiler feedwater
- Reversed osmosis
- Turbine protection
- Demineralization plants
Description
The determination ranges of the silica analyzer vary from trace μg/L to 150 mg/L using the (optional) internal dilution module.
Method
Soluble silica reacts with the molybdate ion in an acid medium to form a green-yellow colored silico-molybdic acid complex that in its turn is converted to a blue complex with the addition of the reducing reagent. Oxalic acid is added to minimize the phosphate interference. The absorbance intensity is proportional to the silica concentration in the sample and is determined at 850 nm.
Reagents
- Silica reagent kit 2l r1 r2 r3 r4
- Silica reagent kit 5l r1 r2 r3 r4
- Silica reagents ready to use 2l r1 r2 r3 r4
- Silica reagents ready to use 5l r1 r2 r3 r4
Standard solutions
Features
| Range (Ø 26 mm) |
1000 ppb |
| Range (Ø 16 mm) |
5000 ppb |
| Range (with dilution) |
150 ppm |
| Wavelength | 850 nm |
| Number of reagents | 4 |
| Min. analysis time | 8 minutes |
Technical Specifications
| Model | 3S-CL |
| Sampling Mode | Batch, with freely settable frequency. |
| Sample | Pressure: Atmospheric Temperature: 5 ‐ 45°C (41 ‐ 113°F) Flow Rate: 80 to 500 mL/min Connection: 6 mm (¼-in.) |
| Drain |
Pressure-free drain Connection: 12 mm (½-in.) |
| Input Streams | 2 |
| Material | Epoxy-coated stainless steel AISI 304 |
| Dimensions (H x W x D) | 604 x 380 x 210 mm (23.6 x 14.8 x 8.2 in) |
| Weight | 20 kg (44 lbs) |
| Power Supply |
Input Voltage: 115 VAC,230 VAC,24 VDC Power consumption: max. 80 W |
| Output signals |
2 x 4-20 mA analog outputs Modbus via RS485,Ethernet |
| Alarms | 2 SPDT programmable voltage-free relays |
| Digital Input | None, Online, Start Extra, Skip Idle, Emergency Stop |
| Ambient Temperature | 5 - 45 °C (41 - 113 °F) |
| Ambient Humidity | 10 - 90 % RH (non-condensing) |
| Protection Grade | IP54 (indoor only, outdoor use possible with external cabinet, not included) |