White Paper
This white paper describes how control of silica and phosphate at power plants require different strategies. With reliable, actionable insights from o...
Analyzer 2850Si Silica 2/Enc/PO4
Innovative Silica and Phosphate Analysis.The 2850Si 2/ENC/PO4 Silica Analyzer offers unique 3-in-1 silica, phosphate and multi-stream monitoring capabilities for power plant water chemistry. Achieve greater functionality at lower cost with this compact and efficient analyzer.
Save Space, Increase Productivity
Optimize valuable panel space by monitoring silica and phosphate with a built-in 2-stream sequencer, leaving the flexibility to install other analytics.
Achieve Low Total Cost of Ownership
Get reliable silica and phosphate analysis using 75% less reagent than other analyzers. Monitored reagent usage reduces unnecessary downtime.
Ensure Optimal System Performance
Simplify maintenance for dependable operation with intelligent diagnostics, while accurate alarm verification boosts control room confidence.
Material No.: 30571935
Product Family:silica-phosphate-analyzer00030006
Specifications - Analyzer 2850Si Silica 2/Enc/PO4
| Silica measurement range | 0-5000 ppb, limit of detection per ASTM Method D7126 |
| Phosphate measurement range | 0.3 - 10 ppm |
| Operating Range (Temp.) | 5 °C – 60 °C 41 °F – 140 °F |
| Sample Flow rate | 50 – 250 mL / min |
| Process Connection | Sample inlet: 6 mm or 1/4" OD tube SS compression fitting Drain hose: 19 x 25.4 mm (¾ x 1"), 2 m (6 ft) length included |
| Protection Rating | IP55 |
| Ingress Protection | IP55 (Enclosure) IP66 / NEMA4X (Electronics) |
| Silica Measurement Accuracy | ± 5 % of reading or ± 1 ppb, whichever is greater |
| Operator Interface | TFT color touchscreen Simultaneous display of silica and/or phosphate concentration and measurement or auto-cal status |
| Zero calibration | Automatic, every measurement cycle |
| Analog Output | Powered 0 / 4 – 20 mA, 22 mA alarm, 500 ohm max load, not for use with externally powered circuit |
| Analog Output Scaling | Linear, bi-linear, logarithmic (1,2,3,4 decades), auto ranging |
| Power Supply | on power loss all settings are retained without batteries 100 – 240 VAC, 50 – 60 Hz, 100 W |
| Power Supply (AC/DC) | 100 V – 240 V |
| Flow Rate | 50 mL/min – 250 mL/min |
| Digital Input | Remote start / stop of measurement cycle |
| Measurement Parameter | Silica/Phosphate |
| Reagent Consumption | Approx 500 mL each per 3 months with 20 min measurement cycle time |
| Humidity | 10 – 90 % non-condensing |
| Communication | PROFIBUS DP |
| Grab Sample Measurement | 500 mL capacity |
| Phosphate Measurement Accuracy | ± 10 % of reading or ± 0.3 ppm, whichever is greater |
| Sample Pressure | 0.3 – 7 bar (5 – 100 psig) |
| Analog Output Accuracy | ± 0.05 mA |
| Measurement Cycle Time | 20 min typical Adjustable ≥ 10 min |
| Weight | 18 kg (40 lbs) |
| Sample Temperature | 5 – 60 °C (41 – 140 °F) |
| Model Family | 2850Si |
| EnclosureType | Full |
| Dimensions HWD | Enclosure: 543 x 413 x 300 mm (21.4" x 16.3" x 11.8") |
| Outputs | 8 Powered 0 / 4 – 20 mA |
| Relay Contact(s) | 4-SPST mechanical rated at 250 VAC, 3 A 4-SPST Type Reed 250 VAC or DC, 0.5 A |
| Resolution | 4 digits with decimal, autoranging 0.001 ppb in lowest range |
| Built-in sequencer | Yes |
| Ambient Operating Temperature | 10 – 50 °C (50 – 122 °F) |
| Ratings/Approvals | CE, cULus |
| Span calibration | once per month, typical Automatic per schedule |
Small Footprint, Greater Functionality
The 2850Si 2/ENC/PO4 Silica Analyzer delivers early, trace-level silica detection in a compact and robust design for maximum operational flexibility. 3-in-1 multi-stream silica and phosphate monitoring deliver more with a single analyzer than ever before.
Reliable and Efficient Water Analysis
Using 1/4 of the reagents, a single 2850Si Silica Analyzer does twice the monitoring with sub-ppb silica and ppm phosphate analysis for power plant chemistry, reducing overall reagent consumption and operating costs.
Eliminate Complexity with Intuitive UI
The 2850Si 2/ENC/PO4 silica analyzer uses a built-in M800 Transmitter. The intuitive user interface guides you through quick setup and allows you to create shortcuts. Easy configuration helps meet specific display needs and simplifies training and operation.
Simplify Your Maintenance Strategy
Intelligent monitoring of reagent usage and tube/filter status enables proactive inventory and service planning. Simplify maintenance further by using METTLER TOLEDO expert services to ensure optimal performance throughout the life of the analyzer.
Better Manage Your Water Chemistry
The 2850Si 2/ENC/PO4 comes with 10+ different internal diagnostics and flexible communication options to leverage key outputs (including phosphate levels) from multiple streams as part of our verified water chemistry technology that enables smart alarms.
Documentation
