The RPS/DPS 8200/8300 series brings Druck’s proprietary TERPS technology to applications involving aggressive media. TERPS is a resonant silicon pressure sensor technology that delivers significantly higher accuracy and stability than conventional pressure measurement technologies.

The TERPS technology also extends the pressure measurement range to high pressures and significantly enhances suitability for harsh environments through true media isolation.

By packaging TERPS technology in Hastelloy C276, the RPS/DPS 8200/8300 series enables use in aggressive, corrosive media such as seawater or hydrogen sulfide (sour gas).

The combination of TERPS technology performance with the quality, reliability, and flexibility of the RPS/DPS 8000 series offers a truly unique solution for applications requiring the highest accuracy and stability in pressure measurement.

Specifications

Measurement

Pressure Ranges

• 0 to 2 bar (0 to 30 psi) absolute
• 0 to 7 bar (0 to 100 psi) absolute
• 0 to 14 bar (0 to 200 psi) absolute
• 0 to 20 bar (0 to 300 psi) absolute
• 0 to 35 bar (0 to 500 psi) absolute
• 0 to 70 bar (0 to 1000 psi) absolute

(Values in psi are approximate.)
The lowest calibrated pressure is 35 mbar absolute.

Overpressure

1.5x full scale (FS)

Sensor failure pressure

2.0x full scale (FS)

Pressure containment

• Ranges up to 7 bar (100 psi): 70 bar (1000 psi)
• Ranges up to 70 bar (1000 psi): 200 bar (3000 psi)

Supply and Output

Electronics Option	Supply Voltage (V)	Output	Current Consumption (mA)
1	6 to 28	Frequency & Diode TTL (1,3,4)	3.5
A	11 to 28	RS485	16.5 quiescent, 32 max
B	11 to 28	RS232	16.5 quiescent, 32 max

• 1. Jitter less than 20 ns
• 2. Valid over the full temperature range
• 3. Square wave signal, 25 kHz nominal, 4–10 kHz span
• 4. Diode forward voltage: 0.5 to 0.7 V at 25°C, typically –2 mV/°C

Response Time

< 300 ms for pressure change from 10% to 90% FS

Supply Response

• Frequency & Diode: Accurate to specification within 500 ms of power-up over full operating temperature range
• RS232/RS485: First stable reading within 20 seconds of power-up

Electrical Protection

Connecting supply voltage and ground across any combination of pins will not damage the unit.

Insulation Resistance

500 V DC

Performance

There are two levels of performance specification: Standard and Improved.

Specifications include the combined effects of non-linearity, hysteresis, repeatability, and temperature errors over the compensated temperature range and the pressure range from 35 mbar to full scale.

Accuracy Code & Precision

• A1 – Standard: 0.02% FS
• A2 – Improved: 0.01% FS

For frequency and diode output, these accuracies can be achieved using a polynomial curve fit and coefficient data supplied with the sensor.

Sensors are calibrated against standards traceable to UKAS, with performance better than 100 ppm.

Compensated Temperature Ranges

• –10 to +50 °C
• –40 to +85 °C
• –40 to +125 °C

Temperature Effects

All temperature effects are included in the accuracy specification.

Long-Term Stability

• Standard: ±0.02% FS/year
• Improved: ±0.01% FS/year

Note: Unless otherwise specified, specifications apply at reference conditions: 25 °C ±5 °C.

Orientation (g) Sensitivity

Less than 0.2 mbar/g