308 is a special pressure transmitter for the hydraulic industry. The pressure sensitive core adopts a diffused silicon core. The internal special integrated circuit converts the sensor millivolt signal into a standard current signal, which can be directly connected to a computer interface card, control instrument, smart instrument or PLC. Connected, long-distance transmission can use the current output method. Small size, light weight, all stainless steel sealed structure, can work in corrosive environment. The product is easy and simple to install, has extremely high vibration and shock resistance, and is widely used in process control, aviation, aerospace, automotive, medical equipment, HVAC and other fields.
| Performance parameters | |
| Measuring range | -100kPa～0…60MPa |
| pressure type | Gauge pressure, absolute pressure, sealing pressure |
| Accuracy | 0.5%FS |
| Hysteresis | 0.1%FS |
| Repeatability | 0.1%FS |
| warm drift | ±1.5%FS(-20℃～85℃) |
| Response time | ≤90ms (rising to 90%FS) |
| Overload pressure | Reference range selection table |
| service life | ≥106 pressure cycle |
| ambient temperature | -40℃～85℃ |
| medium temperature | 115-(0.35×ambient temperature)℃ |
| Storage temperature | -40℃～125℃ |
| EMC | Immunity: IEC 61000-6-2, Emission: IEC 61000-6-3 |
| Insulation resistance | ≥100MΩ/250VDC |
| Vibration performance | Sine curve: 20g, 25Hz～2kHz; IEC 60068-2-6 |
| Random: 7.5grms, 5Hz～1kHz; IEC 60068-2-64 | |
| Shock proof | Shock: 20g/1ms; IEC 60068-2-27 |
| Free fall: 1m; IEC 60068-2-32 | |
| Protection class | IP65 |
| surge | IEC 61000-4-5 Class 1 |
| Withstand voltage | 500V/AC 1min |
| static electricity | IEC 61000-4-2 Class 2 |
| media compatible | Various media compatible with 316L stainless steel |
| Hexagon | HEX27 |
| output and power | ||
| code | B1 | Accept customization |
| output | 4～20mA | – |
| powered by | 12～36VDC | – |
| Electrical connection and wiring method | |
| Connector code | J5: Big Hersman |
| Dimensions Unit: mm |  |
| Protection class | IP65 |
| Wiring | Pin 1: Power + (red wire) |
| (2-wire current) | Pin 2: Current output (green wire) |
| Threaded interface | |||
| thread code | C2：G1/2 | C3: G1/4（ED） | C4：M14×1.5 |
| Dimensions Unit: mm |  |  |  |
| Recommended torque | 15～25Nm | 15～25Nm | 15～25Nm |
| thread code | C5：NPT1/4、Z1/4 | C7：NPT1/2、Z1/2 | C15：G3/8 |
| Dimensions Unit: mm |  |  |  |
| Recommended torque | 15～25Nm | 15～25Nm | 15～25Nm |
| thread code | C34：G1/4（EN837） | ||
| Dimensions Unit: mm |  | – | – |
| Recommended torque | 15～25Nm | – | – |
NOTE: Torque depends on various factors such as gasket material, mating material, thread lubrication and pressure.
| Range selection | |||||
| Range code | pressure type | Measuring range | Overload pressure | burst pressure | Remark |
| 100k | G | 0～100kPa | 200％FS | 500％FS | |
| 160k | G、A | 0～160kPa | 200％FS | 500％FS | |
| 250k | G、A | 0～250kPa | 200％FS | 500％FS | |
| 400k | G、A | 0～400kPa | 200％FS | 500％FS | |
| 600k | G、A | 0～600kPa | 200％FS | 500％FS | |
| 1M | G、A | 0～1MPa | 200％FS | 500％FS | |
| 1.6M | G、A | 0～1.6MPa | 200％FS | 500％FS | |
| 2.5M | S | 0～2.5MPa | 200％FS | 500％FS | |
| 4M | S | 0～4MPa | 200％FS | 300％FS | |
| 6M | S | 0～6MPa | 200％FS | 300％FS | |
| 10M | S | 0～10MPa | 200％FS | 300％FS | |
| 16M | S | 0～16MPa | 200％FS | 300％FS | |
| 25M | S | 0～25MPa | 150％FS | 200％FS | |
| 40M | S | 0～40MPa | 150％FS | 200％FS | |
| 60M | S | 0～60MPa | 150％FS | 200％FS | |
| (-100～0)k | G | -100～0kPa | 300kPa | 600kPa | |
Note: G gauge pressure, A absolute pressure, S sealed pressure.
The choice of damper
application
Cavitation, liquid hammer and pressure spikes can occur in air or liquid systems with flow rate variations. For example the quick closing of a valve or the starting and stopping of a pump.
These problems can occur at the inlet and outlet even at fairly low operating pressures.
medium condition
In liquids containing particles, nozzle clogging can occur. Mounting the transmitter vertically minimizes the risk of clogging because the flow of fluid is limited to the initial start-up period, while the volume behind the nozzle is fixed and the nozzle has a relatively large bore (1.2mm).
Ordering Tips
1. Please pay attention to the compatibility between the tested medium and the contact part of the product when selecting the model.
2. The range is between -100kPa and 60Mpa, which can be customized.
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