Brand: ERUN
Product: Online Water Hardness Analyzer
Model: ERUN-SZ-3085S
Parameter: Total Hardness
The ERUN-SZ-3085S Online Water Hardness Analyzer employs the titrimetric colorimetric method. With its compact design, user-friendly operation, and precise measurements, it is ideal for monitoring water quality in water softening systems and boiler rooms.
|
Measurement Range |
0.20–500 ppm CaCO₃ (see reagent type) |
|
Measurement Principle |
Titrimetric Colorimetry |
|
Measurement time |
About 3 minutes, depending on water hardness and the set rinse time |
|
Accuracy |
±5% of the upper limit of the selected reagent |
|
Repeatability |
±5% of the upper limit of the selected reagent |
|
Analysis Period |
Continuous measurement / Interval measurement (5–30 min) / External trigger signal |
|
Rinse time |
5–1800S (default 120s) |
|
Water consumption |
Approximately 1–2 L per analysis, depending on the inlet pressure and the set flush time |
|
Display |
Backlit LCD display of graphics and numerical values |
|
Unit |
ppm CaCO₃ |
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Current Output |
0/4-20mA,Max.750Ω |
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Relay output |
2-channel passive relay output (NC), 30 VDC, 1 A |
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Input |
External Switch Signal Activation of Analysis/Flow Sensor |
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EnvironmentTemperature |
5-45℃ |
|
Water temperature |
5-40℃ |
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Water sample pressure |
0.5–5 bar; recommended: 1–2 bar |
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Water Quality Requirements |
Colorless, free of suspended particles, and free of bubbles pH: 4–10.5, Iron: <3 ppm, Copper: <0.2 ppm, Aluminum: <0.1 ppm, Manganese: <0.2 ppm |
|
Inlet/Outlet Connections |
1/4" OD hose |
|
Humidity |
20–90% RH, wall-mounted indoor installation |
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Power Supply |
24 VDC, 25 W (optional 220 VAC power adapter) |
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Dimensions and Weight |
250 × 360 × 110 mm, approximately 2.5 kg (including outer casing) |
|
Protection Rating |
IP54 |
|
Model |
ppm CaCO3 |
|
ERUN-TH4201 |
0.2-2.00ppm |
|
ERUN-TH4202 |
0.5-5.00ppm |
|
ERUN-TH4203 |
1.5-15.0ppm |
|
ERUN-TH4204 |
5.0-50.0ppm |
|
ERUN-TH4205 |
15.0-150ppm |
|
ERUN-TH4206 |
25.0-250ppm |
|
ERUN-TH4207 |
50.0-500ppm |
1. Automatic measurement and automatic cleaning
2. Backlit graphic LCD display with Chinese and English menus
3. External signal input for measurement control, used to start or stop analysis
4. 4–20 mA output (optional RS485 communication module)
5. 2-channel relay output
6. Display unit: ppm CaCO₃
7. Continuous measurement or interval measurement (5–30 min)
8. Optional SD card data storage (historical data, fault logs)
9. Minimal maintenance requirements
