BH93420-III Liquid Level Transmitter
The BH93420-III liquid level sensor utilizes a highly precise piezoresistive diffused silicon pressure sensor to measure static pressure, which directly correlates to water level. This measurement is converted into standard signal output through amplification circuitry, establishing a linear relationship between output signal and liquid level for precise and accurate water level monitoring.

Product Features
- Split-type design for easy on-site wiring and calibration
- Integrated LED display
- Explosion-proof rating: ExiaIICT6
- High protection rating: IP68
- Cable options: PE, PU, PTFE
Applications
- Compatible with 316L stainless steel and non-corrosive liquids
- Monitoring water levels in sewage, industrial and municipal water systems, water tanks, wells, rivers, seawater, and lakes
- Diesel, fuel, and other oil tank level monitoring
Performance Parameters
| Measurement Range | 0~10m…400m |
|---|
| Pressure Type | Gauge Pressure, Absolute Pressure, Sealed Pressure |
|---|
| Overload | ≤ 2X rated range |
|---|
| Accuracy @ 25ºC | ±0.25% (Typ.) ±0.5% (Max.) |
|---|
| Repeatability | ±0.03% (Typ.) ±0.05%FS (Max.) |
|---|
| Hysteresis | ±0.03% (Typ.) ±0.05%FS (Max.) |
|---|
| Long-Term Stability | ±0.15%F.S/year (Max.) |
|---|
| Zero Temperature Drift | ±0.01%FS/ºC(>100KPa), ±0.02%FS/ºC (≤100Kpa) |
|---|
| Span Temperature Drift | ±0.01%FS/ºC(>100KPa), ±0.02%FS/ºC (≤100Kpa) |
|---|
| Compensation Temperature | 0-50ºC (0-1m . 0-2m); 0-70ºC |
|---|
| Operating Temperature | -20~80ºC |
|---|
| Storage Temperature | -30~100ºC |
|---|
| Vibration | 10g,55Hz ~ 2kHz |
|---|
| Shock | 100g |
|---|
| Housing Material | Cast aluminum, 1Cr18Ni9Ti |
|---|
| Diaphragm Material | 316L Stainless Steel |
|---|
| Insulation Resistance | >=100MΩ@100VDC |
|---|
| Explosion-proof Rating | ExiaIICT6 |
|---|
| Protection Rating | IP68 |
|---|
| O-Ring Seal | Fluoro rubber |
|---|
| Weight | ~1.5Kg (without cable) |
|---|
| Cable Material | Polyethylene, Polyurethane, PTFE cable |
|---|
| Output Signal | 4~20mA, RS485 Communication Protocol |
|---|
Outline Construction

Electrical Connection

Selection Examples

Ordering Information
Ordering Tips
- Ensure measured medium compatibility with product components during selection
- Specify the density of the measured medium
- For strong electromagnetic or radio frequency interference, provide details and indicate in order
- Install lightning protection devices on-site and ensure reliable product and power supply grounding
Order Guide
| BH93420 | Code | Outline Construction |
|---|
| III | | Liquid level transmitter with 2088 housing |
|---|
| | Measurement Range | 0~10m…400m |
|---|
| | Code | Power Supply |
|---|
| | D1 | 24VDC |
|---|
| | Code | Output Signal |
|---|
| | S1 | 4~20mADC |
|---|
| | S2 | RS485 |
|---|
| | Code | Electrical Connection |
|---|
| | B5 | 2088 with display |
|---|
| | B6 | 3051A |
|---|
| | Code | Pressure Type |
|---|
| | G | Gauge Pressure |
|---|
| | A | Absolute Pressure |
|---|
| | S | Sealed Reference Pressure |
|---|
| | Code | Material |
|---|
| | 01 | 304 Stainless Steel |
|---|
| | 02 | 316L Stainless Steel |
|---|
| | Code | Cable Material |
|---|
| | C1 | PE |
|---|
| | C2 | PU |
|---|
| | C3 | PTFE |
|---|
Freque

ntly Asked Questions
- What are the features of your pressure sensor transmitters?
- High precision, durability, and excellent performance. Customization available.
- Can I customize special specifications?
- Yes, our engineers can tailor products to meet specific needs. We provide OEM and ODM service.
- What is your production capacity?
- Our manufacturing facilities can produce up to 30,000 pressure sensor transmitters per month, so we are fully capable of meeting the needs of large-scale orders. However, it is advisable to contact our sales team in advance to ensure smooth production and delivery scheduling.
- What's the typical delivery period?
- 5~8 working days for standard models. Customized products may vary.
- How are the products priced? Any discounts?
- Competitive pricing with discounts for bulk orders or long-term partners.
- What is the warranty of your products? And after-sales service?
- Our warranty time is 24 months after shipment, and our after-sales will respond to your questions within 24 hours. Remote instruction by PC network is always available.
