Water Potential Meter
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| Brand | COMECAUSE |
|---|---|
| Origin | Shandong, China |
| Manufacturer Type | Direct Manufacturer |
| Detection Range | 0–4.99 MPa (0–49.9 bar) |
| Accuracy | ±0.01 MPa |
| Display | 4.3″ Color LCD Touchscreen |
| Pressure Chamber Volume | 4 L, Rated Pressure: 12 MPa |
| Data Storage | Up to 9,999 records |
| Power Supply | Rechargeable Battery (24 h @ max brightness) |
| Dimensions (Instrument Box) | 520 × 330 × 206 mm |
| Dimensions (Pressure Chamber Box) | 530 × 420 × 206 mm |
| Net Weight | ~12 kg per box |
| Units | MPa / bar selectable |
| Compliance | Designed for GLP-aligned field and lab use |
| Brand | Horde Electric |
|---|---|
| Origin | Shandong, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | HD-ZWS-1 |
| Detection Range | 0–3.5 MPa |
| Accuracy | ±0.01 MPa |
| Display | Backlit LCD with Full Chinese Menu (Field-Configurable UI) |
| Measurement Units | MPa or bar (user-selectable) |
| Data Storage | 4,000 records |
| Interface | USB 2.0 for PC connectivity |
| Software | Windows-based data management suite with Excel export, time-range filtering, and report generation |
| Brand | PMS |
|---|---|
| Origin | USA |
| Model | 1515D |
| Measurement Range | 0–100 bar |
| Accuracy | ±1% of reading (at 50 bar, half-scale) |
| Chamber Material | Stainless Steel |
| Chamber Internal Dimensions | 6.35 cm ID × 12.7 cm depth |
| Display | Digital backlit pressure gauge with selectable units (bar, MPa, psi) |
| Gas Supply | Integrated 20 ft³ aluminum nitrogen cylinder (max pressure 207 bar) |
| Weight | ~16 kg (instrument only) |
| cylinder | 3.9 kg |
| Overall Dimensions | 56 × 38 × 26 cm |
| Seal Options | Standard 6.35 mm compression seal |
| Accessories | 7× and 3.5× magnifying eyepieces (AAA-powered), LED-illuminated 10× handheld eyepiece, gas-saver valve (full- or half-range), sample insertion tools (1/8", 3/16", 1/4" OD), reusable moisture-equilibration sample bags (species-specific sizing), stainless steel chamber base caps (9.525 mm, 12.7 mm, grass-leaf) |
| Brand | Spectrum Technologies |
|---|---|
| Origin | USA |
| Model | Watermark 1 |
| Measurement Range | 0–239 cb (kPa) |
| Sensor Body Material | ABS Plastic & Stainless Steel |
| Sensing Element | Hydrophilic Fibrous Matrix |
| Sensor Dimensions | Ø22 mm × 83 mm |
| Cable | 2-conductor, AWG 20, 1.5 m |
| Compliance | ASTM D4318 (for soil water status correlation), ISO 11274 (soil hydraulic properties), GLP-compatible data logging |
| Brand | Yuntang |
|---|---|
| Origin | Shandong, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | YT-ZSS |
| Measurement Range | 0–3.5 MPa |
| Display | Backlit LCD with Chinese/English bilingual interface |
| Resolution | 0.01 MPa |
| Units | MPa and bar selectable |
| Data Storage | 4,000 records |
| Power Supply | 12 V / 2.5 Ah rechargeable lithium battery with real-time clock |
| Dimensions (Case 1) | 560 × 400 × 280 mm |
| Dimensions (Case 2) | 630 × 400 × 310 mm |
| Net Weight | ~15 kg per case |
| Connectivity | USB 2.0 for data export |
| Software | PC-based analysis suite supporting Excel export, time-range filtering, and report generation |