SYCON Fe
SYCON Fe – Online analyzer for automatic measurement of iron content (0.01-6 mg/l), colorimetric method, RS485 Modbus RTU, 4 relays, 4-20 mA
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SYCON Fe – Online analyzer for automatic measurement of iron content
Why does the iron content need to be monitored?
Iron (Fe) is one of the most common interference parameters in water treatment. Even low concentrations lead to visible discoloration of the water, rusty-brown deposits in pipes and can damage downstream treatment stages such as softening systems or reverse osmosis membranes. A limit value of 0.2 mg/l applies in the drinking water supply – exceeding this value leads to complaints and indicates corrosion or inadequate treatment.
In well water treatment, iron is often the determining parameter for the design of the deferrization system. Continuous online monitoring detects concentration fluctuations in the raw water and checks the efficiency of the treatment plant.
What is the SYCON Fe?
The SYCON Fe from RLS Wacon is a fully automatic online analyzer for the quantitative determination of the iron concentration in process water. It works according to the colorimetric method and covers a measuring range of 0.01 to 6 mg/l with two Reagents (Fe LRS and Fe HRS).
The device offers four relay outputs, an RS485 interface with Modbus RTU, an analog output 0/4-20 mA and two digital inputs. In addition to the programmable limit value alarm, the SYCON Fe has a message for measured values below the detection limit – an important signal for monitoring deferrization systems.
How does the SYCON Fe work?
The SYCON Fe works according to the colorimetric method. For each analysis, a water sample is automatically fed into the measuring chamber and mixed with the Reagent. The reaction with dissolved iron produces a characteristic color reaction whose intensity is proportional to the iron concentration. An optical sensor evaluates the color intensity and calculates the measured value.
Depending on the indicator selected, a corresponding actuator LED is used in the measuring chamber: blue marker for the Reagent Fe LRS (low concentrations) and red marker for Fe HRS (higher concentrations). The analysis time is approx. 7 minutes.
Advantages of the SYCON Fe
- Sensitive measurement from 0.01 mg/l iron
The Fe LRS Reagent already detects concentrations far below the drinking water limit of 0.2 mg/l
- Two measuring ranges for different applications
Fe LRS (0.01-0.5 mg/l) for drinking water and treated water, Fe HRS (0.2-6 mg/l) for untreated water and industrial applications
- Message for measured value below the detection limit
Confirms complete removal of iron – important for monitoring deferrization systems
- RS485 interface with Modbus RTU
Seamless integration into PLC and SCADA systems for central process monitoring
- 4 potential-free relay outputs
Limit value alarm, detection limit / dosing fault, device fault, analysis active / cooling water valve / indicator message
- Analog output 0/4-20 mA
Direct transmission of measured values to the system controller
- Sensor with automatic zero adjustment
Zero sample before every measurement – automatic compensation of ambient light and soiling
- Compact design
Same dimensions as SYCON 2702/2802 – as wall bracket (IP43) or in housing (IP54)
- 9-language graphic display with SD card
Complete logging, installation wizard, software updates via SD card
The SYCON Fe is an analyzer for measuring free iron in a water sample. In addition to the usual relays and input contacts, the online analyzer has a 20 mA current and RS485 interface with Modbus RTU protocol.
Field of application
The SYCON Fe is used wherever the iron content in water needs to be continuously monitored:
| Area of application | Description |
|---|---|
| Drinking water treatment | Monitoring the iron content after iron removal – the drinking water limit is 0.2 mg/l. Even slight exceedances lead to visible discoloration and customer complaints |
| Well water treatment | Continuous monitoring of the raw water to assess the iron load and control the efficiency of the deferrization system |
| Corrosion control | Elevated iron levels in mains water indicate corrosion in pipes – early detection prevents major damage |
| Industrial water treatment | Protection of downstream system components (membranes, ion exchangers, heat exchangers) against iron-related deposits and fouling |
Requirements for the sample water
| Parameters | Requirement |
|---|---|
| Texture | Clear, free of solids, free of gas bubbles |
| Temperature | 5-40 °C (use sample cooler for higher temperatures) |
| min. 0.5 bar, max. 5 bar (recommended 1-2 bar) |
Maintenance
Due to the measuring method, the SYCON Fe requires shorter cleaning intervals than the SYCON series hardening devices:
| Interval | Measure |
|---|---|
| Every 3 months | Cleaning the measuring chamber (with SYCON Clean cleaning set incl. FIT 3000) |
| Every 15,000 analyses or 24 months | Installation of the maintenance set: Replacement of the peristaltic pump cassette, seals and agitator blades |
Installation and commissioning
- Mount the appliance on a dry, easily accessible wall – upright, with free access to the drain
- Make water connections: Inlet and outlet via 6 mm hose
- Electrical connections: Supply voltage, 4 relay outputs, analog output, RS485, 2 digital inputs
- Insert Reagent (Fe LRS or Fe HRS) and install suitable actuator LED in the measuring chamber
- Start installation wizard – step-by-step guide through all settings
- Start the first analysis run and check the measured value
Tip for the installation
Bright light sources with fluctuating brightness in the immediate vicinity of the measuring chamber have an unfavorable effect on the measuring accuracy and should be avoided. A sample cooler is required for sample water temperatures above 40 °C.
Important notes
- Only for indoor use and wall mounting in upright position
- When switching between Fe LRS and Fe HRS, the actuator LED must also be replaced (blue or red marking)
- Gases dissolved in water can lead to measurement deviations when outgassing in the measuring chamber
- Oxidizing agents (chlorine, ozone) above the drinking water limit values impair the measurement
- Free, short drain without back pressure required (max. 2 m, vertical)
- Install maintenance set (item no. 33-020025) every 24 months or 15,000 analyzes
- Clean the measuring chamber every 3 months – use SYCON Clean (item no. 30-010900)
Measuring range and Reagents
| Reagent | Measuring range (mg/l) | Actuator LED | Item no. |
|---|---|---|---|
| Fe LRS | 0,01 – 0,5 | Blue marking | 32-080320 |
| Fe HRS | 0,2 – 6 | Red marking | 32-080330 |
When changing between the Reagents, the actuator LED in the measuring chamber must also be replaced.
Specifications at a glance
| Property | Value |
|---|---|
| Measuring principle | Colorimetric method |
| Parameters | Dissolved iron (Fe) |
| Measuring range Fe LRS | 0.01-0.5 mg/l (ppm) |
| Measuring range Fe HRS | 0.2-6 mg/l (ppm) |
| Accuracy | ± 10 % of the maximum measured value |
| Repeatability | ± 5 % |
| Duration of analysis | approx. 7 minutes |
| Indicator consumption | approx. 0.5 ml per analysis |
| Analysis per 500 ml bottle | approx. 1.000 |
| Water consumption | approx. 2 l per analysis at 2 bar |
| Durability Reagent | min. 1 year (at < 25 °C, stored in the dark) |
Electrical data
| Property | Value |
|---|---|
| Supply voltage (230 V version) | 100-240 V AC, 50/60 Hz |
| Supply voltage (24 V version) | 21.6-26.4 V AC/DC, 50 Hz |
| Power consumption | max. 25 VA / 8 VA measurement mode / 3.5 VA standby |
| Relay outputs | 4 relays, max. 250 V AC/DC, 1 A, potential-free changeover contacts (NC/NO) |
| Relay 1 | Limit value alarm |
| Relay 2 | Below the detection limit / dosing fault |
| Relay 3 | Device fault |
| Relay 4 | Analysis active / cooling water valve / indicator message |
| Analog output | 0-20 mA or 4-20 mA, resolution < 100 µA, max. 750 Ω Load |
| RS485 interface | Modbus RTU |
| Digital inputs | 2× galvanically isolated – analysis start, water meter, flow monitor, interval reset |
Mechanical data and ambient conditions
| Feature | Wall bracket IP43 | Housing IP54 |
|---|---|---|
| Dimensions (W × H × D) | 274 × 275 × 129 mm | 332 × 345 × 190 mm |
| weight | approx. 2.0 kg | approx. 4.0 kg |
| Protection class | IP43 | IP54 |
| Ambient condition | Value |
|---|---|
| Operating temperature | 10-45 °C |
| Storage temperature | 0-45 °C |
| Sample water temperature | 5-40 °C |
| Air humidity | 20-90 % RH (non-condensing) |
| Inlet water pressure | min. 0.5 bar, max. 5 bar (recommended 1-2 bar) |
Reagents
| Reagent | Measuring range | Actuator LED | Item no. |
|---|---|---|---|
| Fe LRS | 0.01-0.5 mg/l | Blue marking | 32-080320 |
| Fe HRS | 0.2-6 mg/l | Red marking | 32-080330 |
Note: The measured value to be monitored should be in the middle of the Reagent measuring range if possible. When changing the indicator between LRS and HRS, the actuator LED in the measuring chamber must also be replaced.
Display and operation
| Property | Value |
|---|---|
| Display | Multicolored graphic display |
| Operation | 8 buttons |
| Languages | German, English, French, Italian, Spanish, Russian, Polish, Dutch, Danish |
| Data memory | SD card (measured value logging and software updates) |
Scope of delivery
| Component |
|---|
| 1 × SYCON Fe (configured for selected supply voltage) |
| Wall bracket or housing (depending on order variant) |
| SD card |
| Operating instructions (German or English, depending on order variant) |
Note: A compatible Reagent (Fe LRS or Fe HRS) with matching actuator LED is required for operation and must be ordered separately.
Additional information
| Design | |
|---|---|
| Power supply | 230 V AC, 24 V AC/DC |
| Manual | English, German |
| Parameter | Iron |
| Product category | Analyzer |
| Series | SYCON |
Flyer
Operating instructions
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