Technical Support
Wide Range: -1bar…0bar to 0.1bar…1000bar wide pressure coverage
High Accuracy: ±0.2% FS high stability performance
Power Supply: 2 x AA batteries for convenient and long-term field use
Flexible Use Remote / Field / Data Logger
Go Wireless. Go Digital. Track Everything on Site
The DR-S281 is more than just a pressure gauge—it is your ultimate field data logger. Featuring 0.25%FS accuracy and seamless Bluetooth connectivity, it allows technicians to view, log, and analyze pressure data remotely from any mobile device. Perfect for hydraulics, HVAC, and pipeline diagnostics.
Description
Meet the DR-S281 Bluetooth Wireless Pressure Gauge — the smart, high-accuracy solution for industrial pressure testing. Designed for technicians and engineers, this advanced pressure gauge combines 0.25%FS precision, wireless Bluetooth monitoring, and 3000-record data logging in one compact, durable device.
With a 330° rotatable LCD display, large backlight, 11 selectable units, and a fast 0.3–10s adjustable logging interval, the DR-S281 gives you the flexibility to measure, track, and export pressure data anytime, anywhere. Connect it to your phone via Bluetooth to view real-time readings, trend charts, and easily download all measurement records.
Whether you work with hydraulics, pneumatics, HVAC systems, pumps, or on-site industrial diagnostics, the DR-S281 Bluetooth Wireless Pressure Gauge delivers the accuracy and convenience you need.
Q1: Why doesn’t my digital pressure gauge display 0.1, 0.01, or 0.001?
A: This is due to the display digit limit of the gauge. Refer to the pressure range and resolution table to select the appropriate range.
For example, the DR3730 has a 4-digit display. If the selected range exceeds 4 digits, it won’t display 0.1, 0.01, or 0.001. For instance, selecting 100MPa (1000bar) won’t show 1000.0, even if the measured pressure is 1MPa (10.1bar won’t display). Choosing 70MPa (700bar) allows 0.1 display. For 1000.0bar, consider DR3710 (4-1/2 digits), DR-S200 (5 digits), or DR-S210 (5 digits).
Q2: Why doesn’t my digital pressure gauge show units like bar PSI or kPa?
A: This is also due to the display digit limit. If the unit exceeds the display digits, the gauge won’t show the unit. Refer to the pressure range and unit display table to select the correct range.
For example, the DR3730 has a 4-digit display. Selecting 100MPa (100000kPa, 6 digits) won’t show kPa, even if the measured pressure is 10kPa.
Technical Parameters
| Measurement range | -1bar…0bar~0.1bar…1000bar | Stability | ±0.30 %FS (1 year) |
| Medium type | Gas, water, oil, pure liquid | Diaphragm | stainless steel 316L |
| Pressure type | gauge, absolute or sealed gauge | Housing | TPE+ABS |
| Display digits | -19999~19999 | Working temp. | - 20 ℃ ~ + 65 ℃ |
| Overload | 120%(≥10MPa), 150%FS(＜10MPa) | Protection level | IP54 |
| Pressure accuracy | ± 0.2% FS / ± 0.4% FS | Power supply | Battery 2 x AA |
| Weight | 0.5 kg |
|---|---|
| Dimensions | 15 × 11 × 10 cm |
| Pressure Range | 0-60MPa, 0-40MPa, 0-25MPa, 0-16MPa, 0-10MPa, 0-6MPa, 0-4MPa, 0-2.5MPa, 0-1.6MPa, 0-1MPa, 0-600KPa, 0-400KPa, 0-250KPa, 0-160KPa, 0-100KPa |
| Connector | NPT1/2", NPT1/4", G1/2", G1/4", M20 * 1.5 |
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