HOBO 13英尺水位数据记录仪

压力和水位测量 U20-001-04 和 U20-001-04-Ti

操作范围

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

工厂校准范围

69 to 145 kPa (10 to 21 psia), 0° to 40°C (32° to 104°F)

爆破压力

310 kPa (45 psia) or 18 m (60 ft) depth

0.6 厘米（0.02 英尺）水

Typical error: ±0.075% FS, 0.3 cm (0.01 ft) water

Maximum error: ±0.15% FS

原始压力精度**

±0.3% FS, 0.43 kPa (0.063 psi) maximum error

决议

<0.014 kPa (0.002 psi), 0.14 cm (0.005 ft) water

压力响应时间 (90%)***

<1 second; measurement accuracy also depends on temperature response time

温度测量（所有型号）

操作范围

-20°C至50°C

-4°到122°F

准确性

±0.44°C from 0° to 50°C (±0.79°F from 32° to 122°F), see Plot A in manual

决议

0.10°C at 25°C (0.18°F at 77°F), see Plot A in manual

响应时间 (90%)

5 minutes in water (typical)

稳定性（漂移）

0.1°C (0.18°F) per year

记录器

实时时钟

每月±1分钟 0°C至50°C

32华氏度至122华氏度

电池

2/3 AA, 3.6 Volt lithium, factory-replaceable

电池续航时间（典型使用）

5 years with 1 minute or greater logging interval

存储器（非易失性）

64K bytes memory (approx. 21,700 pressure and temperature samples)

重量

Stainless steel models: approximately 210 g (7.4 oz)

Titanium models: approximately 140 g (4.8 oz)

维度

2.46 cm (0.97 inches) diameter, 15 cm (5.9 inches) length; mounting hole 6.3 mm (0.25 inches) diameter

湿润材料

316 stainless steel, Viton® o-rings, acetyl cap, ceramic sensor

日志记录间隔

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.

启动模式

Immediate start and delayed start

卸载模式

Offload while logging; stop and offload

电池指示

Battery voltage can be viewed in status screen and optionally logged in datafile. Low battery indication in datafile.

环境评级

IP68

* Water Level Accuracy: With accurate reference water level measurement, known water density, accurate Barometric Compensation Assistant data, and a stable temperature environment.

** Raw Pressure Accuracy: Absolute pressure sensor accuracy includes all sensor drift, temperature, and hysteresis-induced errors.

*** Changes in Temperature: Allow 10 minutes in water to achieve full temperature compensation of the pressure sensor. Maximum error due to rapid thermal changes is approximately 0.5%.