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E-mail
1640822806@qq.com
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Phone
18915187098
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Address
No. 88 Huancheng West Road, Jinhu County Economic Development Zone, Jiangsu Province
Mingyu Instrument (Huai'an) Co., Ltd
1640822806@qq.com
18915187098
No. 88 Huancheng West Road, Jinhu County Economic Development Zone, Jiangsu Province
| parameter | Key selection points | Example/Common Options |
|---|---|---|
| Media Type | It must be a transparent or semi transparent liquid (otherwise it cannot form a red green boundary). | Water, light oil, liquid ammonia, alcohol, etc |
| medium density | Affects the sensitivity of float type quartz tubes (if including float design). | Density ≥ 0.5 g/cm ³ (to avoid float failure) |
| corrosive | Determine the quartz tube and sealing material (if strong acid requires PTFE lining). | 304/316L stainless steel, Hastelloy alloy |
| Viscosity and crystallinity | High viscosity or easily crystallizable media may cause blockage of quartz tubes, and models with flushing interfaces should be selected. | Viscous oils and syrups need to be cleaned regularly |
| parameter | Key selection points | Typical Range |
|---|---|---|
| work pressure | According to the container pressure selection, a margin (1.5 times the safety factor) should be left. | Normal pressure~32MPa (16MPa is commonly used for boiler steam drums) |
| Operating Temperature | The standard quartz tube has a temperature resistance of 400 ℃, and special treatment is required for ultra-high temperatures (such as adding heat sinks). | -20 ℃~+400 ℃ (high temperature type can reach up to 500 ℃) |
| ambient temperature | Outdoor installation requires anti freezing or sun protection design (such as adding insulation layer). | -30 ℃~+60 ℃ (choose low-temperature type in extremely cold areas) |
| parameter | Key selection points | Option Description |
|---|---|---|
| measure length | According to the liquid level range of the container, it is usually 0.5-2m, and if it is too long, it needs to be installed in sections. | Customized length needs to indicate center distance (e.g. 1500mm) |
| connection method | The flange standard and diameter need to match the container interface. | DN20/DN25，PN16/PN40（HG/T、ANSI） |
| Valve configuration | High pressure or hazardous media require safety valves and drain valves. | Three valve group (root valve, drain valve, balance valve) |
| Insulation/heat tracing | High temperature or easily solidified media require jacket type (steam or electric tracing). | Steam jacket (0.6MPa), electric heat tracing strip |
| parameter | Key selection points | Recommended Configuration |
|---|---|---|
| Light source type | LED has a long lifespan (50000 hours), but incandescent bulbs may be required in high-temperature environments. | 24V DC LED (choose this type for explosion-proof occasions) |
| display mode | Dual color (red and green) is standard, and the unit and accuracy of the scale need to be confirmed. | Scale unit: mm/in, accuracy ± 5mm |
| visual range | High brightness light sources or observation windows with magnifying glasses should be selected for night or long-distance observation. | Visible distance ≥ 10m (brighter in strong light environments) |
| parameter | Key selection points | Common authentication |
|---|---|---|
| Explosion-proof rating | Flammable and explosive environments must comply with standards such as ATEX and IECEx. | Ex ia IIC T6 (intrinsic safety type) |
| Material certification | The chemical industry requires material reports (such as SGS). | 316L stainless steel (resistant to chloride ion corrosion) |
| Sealing grade | High risk media require zero leakage design (such as metal wound gaskets). | IP65 (outdoor), IP67 (waterproof) |
| parameter | Key selection points | Application scenarios |
|---|---|---|
| Remote transmission output | When remote signal transmission is required, a reed switch or magnetostrictive sensor (4-20mA output) can be selected. | Automation control system integration |
| anti-fouling design | The medium that is prone to scaling is selected from the clean type (such as with a rotating scraper). | Sewage and slurry media |
| 抗震性能 | Ships or vibration environments require the selection of reinforced structures (such as spring shock absorbers). | Offshore platforms, mobile devices |