Piezo Level Transmitter LT-100
Model LT-100
Piezo level transmitter (LT-100 series) that measures liquid level hydrostatically with a CVD sensing element, offering submersible, junction box, pole and capillary versions, 0.2% FS accuracy and 4–20 mA, HART, voltage or millivolt outputs.
- Brand
- Bont Technologies
- Category
- Level Instruments, Level Transmitter
Overview
About the Piezo Level Transmitter LT-100.
The LT-100 piezo level transmitter from Bont Technologies is a hydrostatic level transmitter for liquids. Its probe, with a corrosion-resistant stainless steel or ceramic membrane, measures the pressure exerted by the liquid above it; from the density of the fluid the transmitter calculates the liquid height and converts it into a standard voltage or current signal. A proven CVD sensing element, an ASIC in amplified units and an all-welded stainless steel back end give high stability and 0.2% FS typical accuracy in submersible, general purpose and wash-down enclosures for demanding industrial applications.
Features
- High stability achieved by a CVD sensing element
- Accuracy 0.2% FS typical (optional 0.15% FS), long-term drift 0.2% FS/year
- Gauge, absolute, vacuum and compound pressure models, from vacuum to 400 bar
- Millivolt, voltage and current output models, including 4–20 mA two-wire with HART
- Submersible, general purpose and wash-down enclosures, up to IP68
- 17-4 PH stainless steel wetted parts; SUS304, SUS316L, PTFE or PP wetted materials to order
- Designed for more than 100 million full-scale cycles
- Approvals: CE, UR (22ET, 26ET intrinsically safe)
How it works
- The probe senses the hydrostatic pressure of the liquid through a stainless steel or ceramic membrane
- The liquid height is derived from the pressure and the fluid density
- The signal is converted into a standard voltage or current output
Applications
- Submersible level measurement in tanks and vessels
- Industrial processes needing wash-down enclosures
- Liquids up to 250 °C with the high-temperature versions
Models
- LT-101, LT-102, LT-103: diaphragm measures the liquid pressure directly, high precision, maximum 80 °C
- LT-104, LT-105, LT-106: diaphragm not in contact with the liquid, unaffected by temperature and impurities
- Types: direct cable, cable with junction box, pole, capillary gas-collecting, pole with gas collecting and rubber hose gas-collecting
LKS supplies the LT-100 piezo level transmitter in Malaysia, with installation, calibration and after-sales support. Contact our engineers for range selection and a quotation.
Specifications
| Model | LT-100 series (LT-101 to LT-106); standard model LT-101-M10/M15AXGKX |
|---|---|
| Measuring principle | Hydrostatic pressure, CVD sensing element |
| Pressure range | Vacuum to 400 bar (6000 psi) |
| Proof pressure | 2 × FS (1.5 × FS for 400 bar, ≥ 5000 psi) |
| Burst pressure | > 35 × FS ≤ 6 bar (100 psi); > 20 × FS ≤ 60 bar (1000 psi); > 5 × FS ≤ 400 bar (6000 psi) |
| Fatigue life | Designed for more than 100 million FS cycles |
| Accuracy | 0.2% FS typical (optional 0.15% FS) |
| Long-term drift | 0.2% FS/year (non-cumulative) |
| Thermal error | 1.5% FS typical (optional 1% FS) |
| Compensated temperature | −20 … 80 °C (−5 … 180 °F) |
| Zero / span tolerance | 1% of span |
| Response time | 0.5 ms |
| Output (current units) | 4–20 mA (2 wire), 12.5–36 VDC supply, supply voltage sensitivity 0.01% FS/V |
| Output (millivolt units) | 100 mV (10 mV/V), 10 VDC regulated supply (15 VDC max.), bridge resistance 2600–6000 Ω |
| Output (voltage units) | Supply 1.5 VDC above span to 35 VDC at 6 mA, supply voltage sensitivity 0.01% FS/V |
| Output options (ordering) | 4–20 mA two-wire; 0–5 V three-wire; 0–10 V three-wire; 4–20 mA two-wire with HART |
| Connection | Screw or flange |
| Wetted parts | 17-4 PH stainless steel; ordering options SUS304, SUS316L, PTFE, PP |
| Enclosure | 316ss, 17-4 PH stainless steel; IP65, IP67 or IP68 (max. depth 200 m H2O) depending on electrical code |
| Medium temperature options | Max. 80, 120, 150, 200 or 250 °C |
| Display options | LED or LCD display |
| Explosion protection options | Flame-proof or safety explosion-proof (LT-101/102 cannot use flame-proof) |
| Vibration | 70 g peak to peak sinusoidal, 5 to 2000 Hz |
| Acceleration | 100 g steady acceleration in any direction |
| Shock | 20 g, 11 ms, per MIL-STD-810E Method 516.4 Procedure I |
| EMC | Meets CE marking requirements of EN50081-2 (emissions) and EN50082-2 (susceptibility) |
| Approvals | CE, UR (22ET, 26ET intrinsically safe) |
Lifecycle support
Installed, calibrated and maintained.
With more than two decades in valves and instrumentation across a diverse range of industries, we keep instruments accurate and valves healthy, because valve health management is vital for plant safety.
- Installation & commissioning
- Calibration & testing
- Maintenance & overhaul
- Dismantling & replacement
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