Brand: Erun environmental protection
Name: Laboratory bench-top boiler water quality analyzer
Model number: ERUN-ST7-11
Parameters: turbidity, total hardness,ph,ect.
ERUN-ST7-11, can detect the turbidity, total hardness, full alkalinity, phenolphthalein alkalinity, PH, conductivity, dissolved oxygen, oil, iron, copper, dissolved solid, phosphate, sulfite, chloride ion and other parameters.
number | parameter | measurement range | error | measuring method |
1 | phosphate radical (low-range) | 0.01-10.0mg/L | 0.2 or 5% | Phosphomolybdenum blue colorimetric method |
phosphate radical (high-range) | 10.0-50.0mg/L | 5% | ||
2 | Total alkalinity (low-range) | 0-1mmol/L | 5%(F.S) | Acid-base titration |
Total alkalinity (high-range) | 1-50mmol/L | 5%(F.S) | ||
3 | Phenolphthalein alkalinity | 0-50mmol/L | / | |
4 | Relative alkalinity | 0.00-1.00 | / | / |
5 | Hardness (low-range) | 0.001-0.05mmol/L | 5%(F.S) | Acid chromium blue K method |
Hardness (high-range) | 0.05-10mmol/L | 5%(F.S) | ||
6 | Copper (low-range) | 0.02-1.0mg/L | 5%(F.S) | Diethyl dithiolamate sodium spectrophotometry |
Copper (high-range) | 1.0-10.0mg/L | 5%(F.S) | ||
7 | Iron (low-range) | 0.0-5.0mg/L | 5%(F.S) | 1,10-Philoline spectrophotometric |
Iron (high-range) | 5.0-10.0mg/L | 5%(F.S) | ||
8 | turbidity | 0-100FTU | ≤2%(F.S) | Formahydrazine turbidity |
9 | PH（25℃） | 0.00-14.00 | ±0.1 | Composite electrode method |
10 | Dissolved oxygen | 0-20.0 mg/L | ±0.2 | Oxygen electrode method |
11 | conductivity (25℃) | 0.00 -199.9×103µS/cm | ±1.0% (F.S) | Potassium chloride electrode method |
12 | Dissolved solid material (electrode method) | 0.0～199.9×103mg/L | ±0.5% (F.S) | Solid guide ratio method |
13 | Oil | 0.00～900.00mg/L | RSD＜0.6% | Infrared photometry |
14 | Sulfite root | 0-100mg/L | / | Iodometric method |
15 | chloridion | 0.20-100.0mg/L | 5%(F.S) | Ammonium thiocyanide titration method |
1.Water quality of natural circulating steam boiler and steam boiler with external water treatment:
Water supply detection parameters:Turbidity / FTU, Hardness / (mmol/L), pH (25℃), conductivity (25℃) / μ S / cm), Dissolved oxygen / (mg/L), Oil / (mg/L), Iron / (mg/L)
Pot water detection parameters:Total alkalinity / (mmol/L), Phenolphthalalinity / (mmol/L), pH (25℃), Conductivity (25℃) / μ S / cm), Dissolved solid / (mg/L), Phosphate / (mg/L), Sulfite / (mg/L), Relative alkalinity
2.Water quality of natural circulating steam boiler and steam boiler with internal water treatment:
Water supply detection parameters:Turbidity / FTU, Hardness / (mmol/L), pH (25℃), Oil / (mg/L), Iron / (mg/L)
Pot water detection parameters:Total alkalinity / (mmol/L), Phenolphthalalinity / (mmol/L), pH (25℃), Conductivity (25℃) / μ S / cm), Dissolved solid / (mg/L), Phosphate / (mg/L)
3.Water quality of tubular and direct flow steam boilers:
Water supply detection parameters:Turbidity / FTU, Hardness / (mmol/L), pH (25℃), Dissolved oxygen / (mg/L), Oil / (mg/L), Iron / (mg/L), Total alkali / (mmol/L),Phenolphthalein / (mmol/L), Conductivity (25℃) / μ S / cm), Dissolved solids / (mg/L), Phosphate / (mg/L), Sulfite / (mg / L)
Pot water detection parameters:Total alkalinity / (mmol/L),Phenolphthalalinity / (mmol/L), pH (25℃), Conductivity (25℃) / μ S / cm), Dissolved solid / (mg/L), Phosphate / (mg/L), Sulfite / (mg/L)
4.Water quality of steam boiler:
Hardness / (mmol/L), Iron / (mg/L), Copper / (mg/L), Oil / (mg/L)
5.Water quality of the hot water boiler:
Water supply detection parameters:Hardness / (mmol/L), pH (25℃), Turbidity / FTU, Iron / (mg/L), Dissolved oxygen / (mg/L), Chloride ion / (mg/L)
Pot water detection parameters:PH (25℃), Phosphate / (mg/L), iron / (mg/L), Oil / (mg/L), Pholphthalein / (mmol/L), Dissolved oxygen / (mg/L)
