Technical Information
|
Pressure (Absolute) and Water Level Measurements U20-001-01 and U20-001-01-Ti
|
| Operation Range |
0 to 207 kPa (0 to 30 psia); approximately 0 to 9 m (0 to 30 ft)
of water depth at sea level, or 0 to 12 m (0 to 40 ft) of water at
3,000 m (10,000 ft) of altitude |
| Factory Calibrated Range |
69 to 207 kPa (10 to 30 psia), 0° to 40°C (32° to 104°F) |
| Burst Pressure |
310 kPa (45 psia) or 18 m (60 ft) depth |
| Water Level Accuracy* |
Typical error: ±0.05% FS, 0.5 cm (0.015 ft) water
Maximum error: ±0.1% FS, 1.0 cm (0.03 ft) water |
| Raw Pressure Accuracy** |
±0.3% FS, 0.62 kPa (0.09 psi) maximum error |
| Resolution |
<0.02 kPa (0.003 psi), 0.21 cm (0.007 ft) water
|
| Pressure Response Time (90%)*** |
<1 second; measurement accuracy also depends on temperature response time
|
Pressure (Absolute) and Water Level Measurements U20-001-02 and U20-001-02-Ti
|
| Operation Range |
0 to 400 kPa (0 to 58 psia); approximately 0 to 30.6 m (0 to 100
ft) of water depth at sea level, or 0 to 33.6 m (0 to 111 ft) of
water at 3,000 m (10,000 ft) of altitude |
| Factory Calibrated Range |
69 to 400 kPa (10 to 58 psia), 0° to 40°C (32° to 104°F) |
| Burst Pressure |
500 kPa (72.5 psia) or 40.8 m (134 ft) dept |
| Water Level Accuracy* |
Typical error: ±0.05% FS, 1.5 cm (0.05 ft) water
Maximum error: ±0.1% FS, 3 cm (0.1 ft) water |
| Raw Pressure Accuracy** |
±0.3% FS, 1.20 kPa (0.17 psi) maximum error |
| Resolution |
<0.04 kPa (0.006 psi), 0.41 cm (0.013 ft) water
|
| Pressure Response Time (90%)*** |
<1 second; measurement accuracy also depends on temperature response time
|
Pressure (Absolute) and Water Level Measurements U20-001-03 and U20-001-03-Ti
|
| Operation Range |
0 to 850 kPa (0 to 123.3 psia); approximately 0 to 76.5 m (0 to
251 ft) of water depth at sea level, or 0 to 79.5 m (0 to 262 ft)
of water at 3,000 m (10,000 ft) of altitude |
| Factory Calibrated Range |
69 to 850 kPa (10 to 123.3 psia), 0° to 40°C (32° to 104°F) |
| Burst Pressure |
1200 kPa (174 psia) or 112 m (368 ft) depth |
| Water Level Accuracy* |
Typical error: ±0.05% FS, 3.8 cm (0.125 ft) water
Maximum error: ±0.1% FS, 7.6 cm (0.25 ft) water |
| Raw Pressure Accuracy** |
±0.3% FS, 2.55 kPa (0.37 psi) maximum error |
| Resolution |
<0.085 kPa (0.012 psi), 0.87 cm (0.028 ft) water
|
| Pressure Response Time (90%)*** |
<1 second; measurement accuracy also depends on temperature response time
|
Pressure (Absolute) and Water Level Measurements U20-001-04 and U20-001-04-Ti
|
| Operation Range |
0 to 145 kPa (0 to 21 psia); approximately 0 to 4 m (0 to 13 ft) of water depth at sea level, or 0 to 7 m (0 to
23 ft) of water at 3,000 m (10,000 ft) of altitude |
| Factory Calibrated Range |
69 to 145 kPa (10 to 21 psia), 0° to 40°C (32° to 104°F) |
| Burst Pressure |
310 kPa (45 psia) or 18 m (60 ft) depth |
| Water Level Accuracy* |
Typical error: ±0.075% FS, 0.3 cm (0.01 ft) water
Maximum error: ±0.15% FS, 0.6 cm (0.02 ft) water |
| Raw Pressure Accuracy** |
±0.3% FS, 0.43 kPa (0.063 psi) maximum error |
| Resolution |
<0.014 kPa (0.002 psi), 0.14 cm (0.005 ft) water
|
| Pressure Response Time (90%)*** |
<1 second; measurement accuracy also depends on temperature response time
|
Temperature Measurements (All Models)
|
| Operation Range |
-20° to 50°C (-4° to 122°F) |
| Accuracy |
±0.44°C from 0° to 50°C (±0.79°F from 32° to 122°F), see Plot A in User Manual |
| Resolution |
0.10°C at 25°C (0.18°F at 77°F), see Plot A in User Manual |
| Response Time (90%) |
5 minutes in water (typical) |
| Stability (Drift) |
0.1°C (0.18°F) per year |
Logger
|
| Real-time Clock |
± 1 minute per month 0° to 50°C (32° to 122°F) |
| Battery |
2/3 AA, 3.6 Volt lithium, factory-replaceable |
| Battery Life (Typical Use) |
5 years with 1 minute or greater logging interval |
| Memory (Non-volatile) |
64K bytes memory (approx. 21,700 pressure and temperature samples) |
| Weight |
Stainless steel models: approximately 210 g (7.4 oz)
Titanium models: approximately 140 g (4.8 oz) |
| Dimensions |
2.46 cm (0.97 inches) diameter, 15 cm (5.9 inches) length; mounting hole 6.3 mm (0.25 inches) diameter |
| Wetted Materials |
Stainless Steel models: 316 stainless steel, Viton® O-rings, acetal cap, ceramic sensor
Titanium models: Titanium, Viton O-rings, acetal cap, ceramic sensor |
| Logging Interval |
Fixed-rate or multiple logging intervals, with up to 8 user-defined logging intervals and durations; logging
intervals from 1 second to 18 hours. Refer to the HOBOware software manual. |
| Launch Modes |
Immediate start and delayed start |
| Offload Modes |
Offload while logging; stop and offload |
| Battery Indication |
Battery voltage can be viewed in status screen and optionally logged in datafile. Low battery indication in
datafile. |
| Environmental Rating |
IP68 |
| CE |
The CE Marking identifies this product as complying with all relevant directives in the European Union (EU). |
