316L Stainless Steel IP68 Water Level Sensor with 4-20mA Output Liquid Level Transmitter Water Level Transmitter
BH93420-III Liquid Level Transmitter
High-precision water leak sensor and level transmitter designed for fuel meters and pressure monitoring applications with 4-20mA output and LED display.
Product Overview
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 measurement.


Key Features
- Split-type design for easy on-site wiring and calibration
- Integrated LED display for clear readings
- Explosion-proof rating: ExiaIICT6
- High protection rating: IP68
- Multiple cable options: PE, PU, PTFE
Applications
- Compatible with 316L stainless steel and non-corrosive liquids
- Water level monitoring for 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 |
Supply Voltage |
Output Type |
| 4~20mA |
15~30VDC |
2/3/4 wire |
| RS485 Communication Protocol |
|
4 wire |
Outline Construction

Electrical Connection
Selection Examples
Ordering Information
Important Ordering Considerations
Please ensure that the measured medium is compatible with the product components in contact with it during selection.
Specify the density of the measured medium.
For strong electromagnetic or radio frequency interference environments, please provide details and indicate in your order.
For reliable operation, install lightning protection devices on-site and ensure proper product and power supply grounding.
Order Guide
| BH93420 |
Code |
Outline Construction |
| III |
|
Liquid level transmitter with the 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 |
Frequently 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 services.
- What is your production capacity?
- Our manufacturing facilities can produce up to 30,000 pressure sensor transmitters per month, capable of meeting large-scale orders. Contact our sales team in advance for 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?
- 24-month warranty after shipment. Our after-sales team responds within 24 hours, with remote PC network instruction always available.
