Liquid Level Transmitter with Accuracy and LED Display Water Pressure Transmitter
BH93420-III Water Level Transmitter with Display
The BH93420-III water level transmitter utilizes a highly precise Piezoresistive diffused silicon pressure sensor to measure static pressure, which directly correlates to water level. This pressure is converted into standard signal output through amplification circuitry, establishing a linear relationship between output signal and liquid level for precise and accurate 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, tanks, wells, rivers, seawater, and lakes
- Diesel, fuel, and other oil tank level monitoring
Performance Parameters
| Measurement Range | 0~1m…400m H₂O |
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| Pressure Type | Gauge Pressure, Absolute Pressure, Sealed Pressure |
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| Overload Capacity | ≤ 2X rated range |
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| Accuracy @ 25ºC | ±0.25% (Typ.) ±0.5% (Max.) |
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| Repeatability | ±0.03% (Typ.) ±0.05%FS (Max.) |
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| Hysteresis | ±0.03% (Typ.) ±0.05%FS (Max.) |
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| Long-Term Stability | ±0.15%F.S/year (Max.) |
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| Zero Temperature Drift | ±0.01%FS/ºC(>100KPa), ±0.02%FS/ºC (≤100Kpa) |
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| Span Temperature Drift | ±0.01%FS/ºC(>100KPa), ±0.02%FS/ºC (≤100Kpa) |
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| Compensation Temperature | 0-50ºC (0-1m . 0-2m); 0-70ºC |
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| Operating Temperature | -20~80ºC |
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| Storage Temperature | -30~100ºC |
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| Vibration Resistance | 10g, 55Hz ~ 2kHz |
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| Shock Resistance | 100g |
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| Housing Material | Cast aluminum, 1Cr18Ni9Ti |
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| Diaphragm Material | 316L Stainless Steel |
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| Insulation Resistance | >=100MΩ@100VDC |
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| Explosion-proof Rating | ExiaIICT6 |
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| Protection Rating | IP68 |
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| O-Ring Seal | Fluoro rubber |
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| Weight | ~1.5Kg (without cable) |
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| Cable Material | Polyethylene, Polyurethane, PTFE cable |
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| Output Signal | Supply Voltage | Output Type |
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| 4~20mA | 15~30VDC | 2/3/4 wire |
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| RS485 Communication Protocol | | 4 wire |
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Outline Construction

Electrical Connection

Selection Examples

Ordering Information
Important Considerations
- Ensure measured medium compatibility with product components
- Specify the density of the measured medium
- Detail any strong electromagnetic or radio frequency interference environments
- Install lightning protection devices and ensure proper grounding for reliable operation
Order Guide
| BH93420 | Code | Outline Construction |
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| I | Pressure Transmitter | |
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| Measurement Range | 0~10m…400m | |
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| Code | Power Supply | |
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| D1 | 24VDC | |
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| D2 | 5VDC | |
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| D3 | Other | |
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| Code | Output Signal | |
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| S1 | 4~20mADC | |
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| S2 | 1~5VDC | |
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| S3 | 0~5VDC | |
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| S4 | 0~10mADC | |
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| S5 | 0~20mADC | |
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| S6 | 0~10VDC | |
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| S7 | 0.5~4.5VDC | |
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| S8 | RS485 | |
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| Code | Pressure Type | |
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| G | Gauge Pressure | |
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| A | Absolute Pressure | |
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| S | Sealed Reference Pressure | |
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| Code | Material | |
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| 01 | 304 Stainless Steel | |
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| 02 | 316L Stainless Steel | |
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| Code | Cable Material | |
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| C1 | PE | |
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| C2 | PU | |
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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 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.