Features
SS309 series 4-20mA differential pressure sensor is very rugged and designed as a wet/wet differential pressure transmitter. It can be used to measure gas or liquid pressure. It is compatible with stainless steel wetted parts and Viton. O-ring inside as the pressure sensing element. Silicone oil is filled in the transducer housing between the silicon chip and stainless steel 316L diaphragm. The measured pressure acts on the silicon chip through the diaphragm and silicone oil.
SS309 series has two pressure ports for high and low pressures. The piezoresistive bridge sensor creates an output signal. This signal is amplified to a usable voltage or a 4-20mA output. We offer a variety of mechanical and electrical configurations. SS309 series is ideal for differential pressure measurement in the petroleum, chemical industry, power stations, and flow measurement.
Pressure & overload (Unit: bar)
| Pressure | 0.35 | 0.7 | 1 | 2 | 3.5 | 7 | 10 | 16 | 20 | 25 |
|---|---|---|---|---|---|---|---|---|---|---|
| Overload | 1 | 2.5 | 2.5 | 5 | 5 | 10 | 15 | 20 | 30 | 30 |
| Static pressure | 16 | 16 | 16 | 16 | 16 | 16 | 25 | 25 | 40 | 40 |
Parameters
Performance
| Accuracy @ 25 °C | ± 0.5% F.S. (incl. non-linearity, hysteresis and repeatability) |
|---|---|
| Pressure range | 0 to 0.2 … 25 bar |
| Pressure type | Differential |
| Response time | < 4 ms |
| Long term stability | ≤ 0.2% F.S./Year |
| Temperature coefficient | ± 0.03% F.S./°C |
| Sensor | Silicon |
Electrical specifications
| 4-20mA | 10%-90% | 0-5V / 0-10V | 0.5-4.5V | |
|---|---|---|---|---|
| Supply voltage | 9-30V | 5V ratiometric | 12-30V | 5Vdc |
| Polarity protected | yes | yes | yes | yes |
| Short-circuit protected | yes | yes | yes | yes |
| Zero and span adjustment | No | No | No | No |
| Surge protection | yes | yes | yes | yes |
Environmental conditions
| Medium temperature range | -20°C → +100°C |
|---|---|
| Ambient temperature range | -20°C → +80°C (depending on electrical connection) |
| Compensated temperature range | 0°C → +70°C |
| EMC – Emission | EN 61000-6-3 |
| EMC – Immunity | EN 61000-6-1 |
| Insulation resistance | > 100 MΩ at 250 V |
Mechanical characteristics
| Diaphragm | Stainless steel 316L | Tantalum, Hastelloy-C is on on request | |
|---|---|---|---|
| Enclosure | Stainless steel 304 | ||
| O-ring | FKM / Viton | EPDM is on request | |
| Weight | 0.25 – 0.5 kg (depending on pressure connection and electrical connection) | ||
| Pressure connection | G 1/4″, G 1/2″, 1/4″ NPT, 1/2″ NPT, M20 × 1.5, M14 × 1.5 | Others are on request | |
| Electrical connection | DIN43650, Cable outlet, LED display, M12 × 1 | Others are on request | |
Drawings
Electrical connector and housing (Dimensions in mm) | Contact us for more options
 |
|
|---|---|
| 1/4 INCH NPT; 1/2 INCH NPT | LENGTH=90 MM |
| 1/4 INCH BSP; 1/2 INCH BSP | LENGTH=93 MM |
Electrical Connections
Data Sheet
File Download
