BH93420-I Water Level Transmitter
The BH93420-I is a high-performance water level transmitter featuring 0.5-4.5V and 4-20mA output signals for precise liquid level measurement in tanks and various applications.

Product Overview
The BH93420-I water level transmitter utilizes HT series diffused silicon isolation oil-filled core technology as its signal measuring element. Designed with a full stainless steel housing and compact one-piece structure, this immersion-type transmitter offers exceptional waterproof performance. Rigorous high and low-temperature compensation and aging tests ensure high reliability and excellent stability.
Key Features
- Full stainless steel housing for diverse testing environments
- Immersion-type probe measurement for easy installation
- Multiple output signal options available
- Explosion-proof certification: ExiaIICT6
- High protection rating: IP68
- Available with PE or PU cable options
Applications
- Compatible with 316L stainless steel and non-corrosive liquids
- Water level monitoring in sewage, industrial, municipal water systems, tanks, wells, rivers, seawater, and lakes
- Fuel level measurement in diesel and fuel tanks
Performance Parameters
| Measurement Range | 0~10m…400m |
| Overload Capacity | ≤ 2 X of 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 | ±0.2%F.S/year (Max.) |
| Zero Point Temperature Drift | ±1.5%F.S(Typ.) ±2%F.S (Max.) |
| Full Scale Temperature Drift | ±1.5%F.Sr(Typ.) ±2%F.S (Max.) |
| Compensation Temperature | 0-50ºC (0-1m. 0-2m); 0-70ºC |
| Operating Temperature | -20~80ºC |
| Storage Temperature | -30~100ºC |
| Vibration Resistance | 10g,55Hz ~ 2kHz |
| Housing Material | 1Cr18Ni9Ti |
| Diaphragm Material | 316L Stainless Steel |
| Insulation Resistance | >=100MΩ@100VDC |
| Explosion-proof Rating | ExiaIICT6 |
| Protection Rating | IP67, IP68 |
| O-Ring Seal | Fluoro rubber |
| Weight | ~0.3Kg (without cable) |
| Cable Material | Polyethylene, Polyurethane |
Output Signal Specifications
| Output Signal | Supply Voltage | Output Type |
|---|
| 4~20mA | 12~30VDC | 2/3/4 wire |
| 0~10/20mA | | 3 wire |
0/1~5V 0/1~10V 0.5~4.5V | 5VDC | |
| RS485 Communication Protocol | 3.6~30V / Battery | 4 wire |





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







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 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.