4-20mA Output Differential Pressure Transmitter IP65 Protection for Industrial Applications Differential Pressure Sensor
4-20mA Electronic Air Differential Pressure Transmitter with aluminium case sensor transducer for industrial applications.

Product Overview
The BP93420DI differential pressure transmitter accurately measures differential pressure through a Wheatstone bridge sensor chip. When differential pressure acts on corrugated diaphragms at both sensor ends, the output signal maintains excellent linear relationship with the pressure differential. Ideal for gas and liquid differential pressure measurements in petroleum, chemical, power, and hydrology industries.

Key Features
- Stainless steel structural design for compact size and easy installation
- Rigorous temperature compensation and aging screening for stable, reliable performance
- Flexible electrical interface options: plug-in or direct wiring
Applications
- Differential pressure measurement for gases and liquids in petroleum, chemical, power, and hydrology pipelines
- Industrial process monitoring in petroleum, chemical, metallurgy, power generation, and hydrology
- Pipeline and furnace chamber pressure measurement
Performance Parameters
| Parameter | Specification |
|---|
| Measurement Range | 0-500Pa...~200kPa |
|---|
| Pressure Type | Differential Pressure |
|---|
| Single-side Overload | ≤3 times of the rated range |
|---|
| Static pressure | The minimum value between 5 times the rated range or 7 MPa |
|---|
| Accuracy @ 25ºC | ±0.25% (Typical) ±0.5% (Maximum) |
|---|
| Repeatability | ±0.03% (Typ.) ±0.05%FS (Max.) |
|---|
| Hysteresis | ±0.03% (Typ.) ±0.05%FS (Max.) |
|---|
| Long-Term Stability | ±0.5%F.S/Year(≤200KPa) ±0.2%F.S/Year(>200KPa) |
|---|
| 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(0-10KPa, 0-20KPa) ,0-70ºC ,-10-70ºC |
|---|
| Operating Temperature | -30ºC~80ºC |
|---|
| Storage Temperature | -40ºC~100ºC |
|---|
| Vibration | 10g,55Hz ~ 2kHz |
|---|
| Housing Material | 304,316L |
|---|
| Diaphragm Material | 316L |
|---|
| Insulation Resistance | 100MΩ 100VDC |
|---|
| Explosion-proof Rating | Intrinsically safe and explosion-proof |
|---|
| Protection Rating | IP65 |
|---|
| Weight | ~0.25kg |
|---|

Output Signal Configuration
| Output Signal | Supply Voltage | Output Type |
|---|
| 4~20mA | 12~30VDC | 2/3/4 wire |
| 0~10/20mA | | 3 wire |
0/1~5V 0.5~4.5V | 5VDC | |

Ordering Information
Selection Tips
- Ensure measured medium compatibility with product contacting parts
- Install three-valve manifold between measurement point and transmitter for reliable operation
- Position pressure interfaces horizontally to minimize installation location impact
- Specify special requirements (vibration, impact, EMI/RFI) in your order
Order Guide
| Code | Description |
|---|
| BP93420XX | Pressure Transmitter |
| DII | Differential Pressure Transmitter |
| Measurement Range | 0-10KPa...~2MPa |
| Power Supply Codes |
| D1 | 24VDC |
| D2 | 5VDC |
| D3 | Other |
| Output Signal Codes |
| S1 | 4~20mADC |
| S2 | 1~5VDC |
| S3 | 0~5VDC |
| S4 | 0~10mADC |
| S5 | 0~20mADC |
| S6 | 0~10VDC |
| S7 | 0.5~4.5VDC |
| Pressure Connection Codes |
| J1 | M20×1.5 Male |
| J2 | G1/2 Male |
| J3 | G1/4 Male |
| J4 | 1/2 NPT Male |
| J5 | Other |
| Electrical Connection Codes |
| B1 | Hirschmann |
| B2 | PG7 Plug |
| B3 | Sealed Cable Output |
| B4 | Other |
| Pressure Type Codes |
| D | Differential Pressure |
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.