SYCON 2802
SYCON 2802 – Premium titration device with Modbus RTU, 4 relay outputs, 2 limit values and analog output 4-20 mA for quantitative measurement of water hardness
Private customers can also find our range in our partner store Ampha-Analyse.
Reagent for SYCON 2802:
See also:
SYCON 2802 – Premium titration device for water hardness with Modbus RTU
Why the SYCON 2802?
In complex water treatment plants, the highest demands are placed on process monitoring. In addition to the precise measurement of water hardness, measured values must be transmitted in real time to higher-level control systems (PLC, SCADA, building management systems). Several limit values enable a differentiated response – for example, a pre-alarm if slightly exceeded and a safety shutdown if critical values are reached.
The SYCON 2802 is the flagship of the SYCON series and combines all the functions of the SYCON 2702 with additional interfaces and control options. It is the first choice for demanding industrial applications where seamless integration into plant automation and complete process documentation are required.
What is the SYCON 2802?
The SYCON 2802 from RLS Wacon is a fully automatic online titration device for the quantitative measurement of total hardness or carbonate hardness (acid capacity KS 4.3) in process and industrial water. Compared to the SYCON 2702, it offers two additional relay outputs (4 in total), an RS485 interface with Modbus RTU protocol, a second digital input and a second, freely programmable limit value.
The second limit value enables differentiated monitoring: for example, limit value 1 can be configured as a pre-alarm and limit value 2 as the main alarm. Alternatively, a water overlap can be monitored with two limit values – with a lower and an upper threshold value for the desired mixing hardness.
How does the SYCON 2802 work?
The measuring principle is identical to the SYCON 2702: colorimetric titration method. A water sample is automatically fed into the measuring cell and the Reagent (H25 series or C25 series) is added step by step. The maintenance-free RGB full color sensor evaluates the color change and calculates the exact hardness concentration. The analysis time is approx. 3 minutes and the indicator consumption is less than 0.05 ml per analysis.
The decisive difference lies in the extended interfaces: Via the RS485 interface with Modbus RTU protocol, measured values and device parameters can be queried directly from a PLC. The analog output (0/4-20 mA) is also available. Four relay outputs offer maximum flexibility for signaling and system control.
Extended functions compared to the SYCON 2702
| Function | SYCON 2702 | SYCON 2802 |
|---|---|---|
| Relay outputs | 2 | 4 |
| Programmable limit values | 1 | 2 |
| Digital inputs | 1 | 2 |
| RS485 / Modbus RTU | – | Yes |
| Cooling water valve control | – | Yes (via relay 4) |
| Analog output 0/4-20 mA | Yes | Yes |
Advantages of the SYCON 2802
- Exact determination of measured values by titration method
Quantitative determination of water hardness with ± 5 % accuracy and ± 2.5 % repeatability
- RS485 interface with Modbus RTU
Direct query of measured values and device parameters by a PLC – seamless integration into the system automation
- Two freely programmable limit values
Pre-alarm and main alarm or monitoring of a water overlap with lower and upper threshold value
- 4 potential-free relay outputs
Limit value 1, limit value 2 / indicator level, device fault, analysis active / cooling water valve
- Analog output 0/4-20 mA in addition to Modbus
Parallel measured value output via analog and digital interface
- 2 digital inputs
External analysis start, water meter, flow monitor, interval reset, remote reset – flexibly configurable
- Control of an external cooling water valve
Relay 4 can be configured to automatically control a sample cooler valve
- Full color sensor with automatic zero adjustment
Zero sample before every measurement – automatic compensation of ambient light, contamination and turbidity, no manual calibration needed
- Very low indicator consumption
Less than 0.05 ml per analysis – at least 10,000 analyses per 500 ml bottle
- 9-language graphic display with SD card
Complete logging, installation wizard, software updates via SD card
Field of application
The SYCON 2802 is the first choice for demanding applications where seamless integration into higher-level control systems is required:
| Area of application | Description |
|---|---|
| Industrial water treatment | Full connection to PLC/SCADA via Modbus RTU and 4-20 mA – Measured values, alarms and device status in real time |
| Water blending | Two limit values monitor the upper and lower threshold values of the desired mixing hardness |
| Complex softening systems | Pre-alarm (limit value 1) and main alarm (limit value 2) for graduated reactions in the event of hardness breakthrough |
| Steam boiler with sample cooler | Automatic control of the cooling water valve via relay 4 – no external timer required |
| Reverse osmosis systems | Quantitative monitoring with remote reset option via the second digital input |
Requirements for the sample water
| Parameters | Requirement |
|---|---|
| pH value | 4-10 |
| Iron (Fe) | < 3 ppm |
| Copper (Cu) | < 0.2 ppm |
| Aluminum (Al) | < 0.1 ppm |
| Manganese (Mn) | < 0.2 ppm |
| Acid capacity KS 4.3 | < 5 mmol/l |
| Properties | Clear, colorless, free of solids, free of gas bubbles |
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 via the cable glands (4 pieces): Supply voltage, 4 relay outputs, analog output, RS485, 2 digital inputs
- Connect the RS485 bus (for Modbus RTU connection): Configure bus address and baud rate in the menu
- Insert the Reagent of the H25 series or C25 series and insert the suction lance
- Start installation wizard – step-by-step guide through all settings including both limit values
- Start the first analysis run and check the measured value
Tip for the installation
Use the Modbus RTU interface to remotely query all device parameters via your PLC. This means that measured values, limit value status, device status and indicator supply can be monitored centrally – without additional cabling for individual signals. The fourth relay can be configured to automatically control a cooling water valve for the optional sample cooler.
Important notes
- Only for indoor use and wall mounting in upright position
- A compatible H25 or C25 Reagent is required for operation
- Free, short drain without back pressure required
- Oxidizing agents (chlorine, ozone) above the drinking water limit values impair the measurement
- Install maintenance set (item no. 33-090034) every 2 years or 30,000 analyzes
- Clean the measuring cell every 6 months – use SYCON Clean (item no. 30-010900)
Measuring range and Reagents
The SYCON 2802 enables the monitoring of a measuring range (H25 for total hardness or C25 for carbonate hardness).
The measuring range depends on the Reagent used.
Measuring ranges for total hardness (H25):
| Reagent | Item number | Measuring range | ||||
|---|---|---|---|---|---|---|
| Single bottle | Value pack | °dH | °f | ppm CaCo3 | °e | |
| H25-0,02 | 32-084115 | 32-484115 | 0,012 – 0,12 | 0,021 – 0,214 | 0,21 – 2,14 | 0,025 – 0,15 |
| H25-0,05 | 32-084125 | 32-484125 | 0,02 – 0,2 | 0,036 – 0,357 | 0,36 – 3,57 | 0,025 – 0,25 |
| H25-0,1 | 32-084135 | 32-484135 | 0,03 – 0,3 | 0,054 – 0,536 | 0,54 – 5,36 | 0,038 – 0,375 |
| H25-0,2 | 32-084145 | 32-484145 | 0,06 – 0,6 | 0,11 – 1,07 | 1,1 – 10,7 | 0,08 – 0,75 |
| H25-0,3 | 32-084155 | 32-484155 | 0,09 – 0,9 | 0,16 – 1,161 | 1,6 – 16,1 | 0,12 – 1,12 |
| H25-0,5 | 32-084165 | 32-484165 | 0,15 – 1,5 | 0,27 – 2,68 | 2,7 – 26,8 | 0,19 – 1,87 |
| H25-1 | 32-084175 | 32-484175 | 0,3 – 3 | 0,54 – 5,36 | 5,4 – 53,6 | 0,38 – 3,75 |
| H25-2 | 32-084185 | 32-484185 | 0,6 – 6 | 1,1 – 10,7 | 10,7 – 107,1 | 0,76 – 7,51 |
| H25-3 | 32-084195 | 32-484195 | 0,9 – 9 | 1,6 – 16,1 | 16,1 – 160,1 | 1,13 – 11,2 |
| H25-5 | 32-084205 | 32-484205 | 1,5 – 15 | 2,7 – 26,8 | 26,8 – 267,9 | 1,88 – 18,8 |
| H25-10 | 32-084215 | 32-484215 | 3 – 30 | 5,4 – 53,6 | 53,6 – 535,7 | 3,76 – 37,6 |
Measuring ranges for carbonate hardness (C25):
| Reagent | Item number | Measuring range | ||||
|---|---|---|---|---|---|---|
| Single bottle | Value pack | °dH | °f | ppm CaCo3 | mmol/l (KS4.3) | |
| C25-1 | 32-086125 | 32-486125 | 0,3 – 7,5 | 0,5 – 13,4 | 5,3 – 134 | 0,11 – 2,68 |
| C25-1,5 | 32-086135 | 32-486135 | 0,5 – 11,5 | 0,8 – 20,5 | 8,0 – 80,1 | 0,16 – 4,11 |
| C25-2 | 32-086145 | 32-486145 | 0,6 – 15,0 | 1,1 – 26,8 | 10,6 – 268 | 0,21 – 5,36 |
| C25-3 | 32-086155 | 32-486155 | 0,9 – 22,5 | 1,6 – 40,2 | 16 – 402 | 0,32 – 8,04 |
Specifications at a glance
| Property | Value |
|---|---|
| Measuring principle | Colorimetric titration method |
| Parameters | Total hardness (H25 series) or carbonate hardness (C25 series) |
| Measuring range total hardness | 0.012-30 °dH (11 Reagents) |
| Measuring range carbonate hardness | 0.3-22.5 °dH (4 Reagents) |
| Accuracy | ± 5 % of the measuring range end value |
| Repeat accuracy | ± 2,5 % |
| units | °dH, °f, ppm CaCO₃, mmol/l, °e, °Zh |
| Analysis time | approx. 3 minutes |
| Indicator consumption | < 0.05 ml per analysis (depending on hardness) |
| Analysis per 500 ml bottle | at least 10,000 (with soft water) |
| Water consumption | approx. 1 l per analysis at 2 bar |
| Durability Reagent | at least 2 years (stored at < 25 °C, 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 |
| Fuses (230 V version) | 2 A slow-blow + 400 mA slow-blow (5×20 mm) |
| Fuses (24 V version) | 2 A slow-blow + 1 A slow-blow (5×20 mm) |
| Relay outputs | 4 relays, max. 250 V AC/DC, 1 A, potential-free changeover contacts (NC/NO) |
| Relay 1 | Limit value exceeded 1 |
| Relay 2 | Limit value exceeded 2 / limit value not reached / indicator level low |
| Relay 3 | Device fault |
| Relay 4 | Analysis active / cooling water valve / indicator level low |
| Analog output | 0-20 mA or 4-20 mA, resolution < 100 µA, max. 750 Ω Load |
| RS485 interface | Modbus RTU – query of measured values and device parameters via PLC |
| Digital inputs | 2× galvanically isolated – analysis start, water meter, flow monitor, interval reset, remote reset |
| Battery | CR2032 (date/time/status buffering) |
Mechanical data
| 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 conditions
| 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) |
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 2802 (configured for selected supply voltage) |
| Wall bracket or housing (depending on order variant) |
| SD card |
| Operating instructions |
Note: A compatible H25 series (total hardness) or C25 series (carbonate hardness) Reagent 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 | p-value, Total hardness |
| Product category | Analyzer |
| Series | SYCON |
Flyer
Operating instructions
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