1. Introduction
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BT8005 Submersible High-temperature Level Transmitter is used to measure high-temperature well level and temperature. It features full temperature digital compensation, with compensation data stored in nonvolatile memory.
With its high reliability in performance, it is mainly used for measuring and controlling high-temperature conditions such as in hot springs and underground hot water.
2. Advantages
- High-Temperature Thermal Resilience: Specifically designed to measure water levels and fluid temperatures in extreme thermal environments up to 85°C operating temperature with digital temperature compensation.
- Titanium Alloy Sapphire Sensing Element: Employs a high-stability titanium alloy sapphire sensor with dry measuring technology for maximum durability against hot and harsh mineral fluids.
- Fully Welded IP68 & Ex-Proof Construction: All-welded stainless steel enclosure (316L / SS 1Cr18Ni9Ti optional) with IP68 rating, Teflon cabling, and ExiaⅡC T6intrinsically safe explosion-proof certification.
- Removable Protective Probe Cap: Protects the sensitive diaphragm from physical damage while allowing easy removal for periodic cleaning and maintenance.
- Anti-Surge & Reverse Power Protection: Built-in protection against electromagnetic interference, power reverse connections, and voltage surges.
3. Technical Parameters
| Main performance specification | |
| Accuracy | ＜ ±0.25% F·S |
| Range | 0～10 mH2O…100 mH2O |
| Long-term stability | 0.2%F·S/year （>20m） |
| 0.1%F·S/year（≤20m） | |
| Overload capability | 2X F·S |
| Load | (U-12)/0.02（Ω） |
| Temperature characteristics | |
| Compensation temp. | 0～70℃ |
| Operating temp. | -20～85℃ |
| Drift of temp. | Zero： 0.05%F.S/℃ |
| F.S: 0.05%F.S/℃ | |
| Storage temp. | -40～125℃ |
| Electrical characteristics | |
| Power Supply | DC12～24V （typ.24V） |
| Power Protection | Anti-reverse connection overvoltage protection |
| Output method | Two-wire 4～20mA |
| Structural characteristics | |
| Measuring medium | Compatible with stainless steel, Teflon, and fluoro rubber |
| Pressure interface | Stainless steel cap or G1/2 M20*1.5 male |
| Housing material | SS 1Cr18Ni9Ti and 316L optional |
| Cable material | Teflon double wire or gas shield four – core cable |
| Environmental characteristics | |
| Protection level | IP68 |
| Explosive-proof grade | ExiaⅡC T6 |
| Insulation | 100MΩ@50V |
| Vibration | 20g 20～5000Hz |
| Shock | 20g 11ms |
4. Parameters
5. Typical Industry Applications
Hot Spring & Geothermal Well Monitoring: Continuous level and depth measurement in high-temperature hot springs and geothermal wells.
Underground Hot Water Extraction: Deep-well water level tracking for municipal geothermal heating stations and thermal resorts.
Industrial High-Temperature Tanks: Level sensing in industrial process vessels, boiler hot water sumps, and chemical treatment basins.
Mining & Hydrological Deep-Well Surveys: Groundwater level measurement in subterranean environments with high thermal gradients.