Smart SDI-12 / RS485 PT Sensor

智能压力和温度传感器

smart pt pressure transducer

独特功能

  • 平均和标准误差数据输出
  • 最高水尺功能自动捕捉水位最小值和最大值
  • 智能自动采样提供顺畅的过采样
  • 自定义补偿
  • 当地引力场环境校正及温度引起的流体密度变化

Stevens Smart PT 是一款陶瓷膜气压和温度传感器,提供精确的测量结果,适用于各种液位测量应用。除瞬时测量简单之外,这款智能传感器还能捕捉峰值液位,自动采样并按照一定的时间间隔报送基本数据,时间间隔可设置。

耐腐蚀不锈钢外壳和密封的电子元件,使 Smart PT 非常持久耐用,应用时可长期置于水中。

Smart PT 适用于开口型或绝对压力传感模块。两种型号均可根据用户指定长度配备开口型线缆。通过通风管提供大气参数,对气压变化进行补偿。

对地球引力场的局部变化进行可编程式的校正,此外Smart PT 还可对水温-密度相关性进行自动补偿。

每一款 Smart PT 都提供 SDI-12 和 RS-485 两种数字界面。与现有电源和数据采集一起兼容,易部署,方便远程监测站使用传感器进行数据收集。

特性

  • 满量精度<±0.1%
  • 氧化铝陶瓷膜
  • 数字式输出(SDI-12 / RS485)
  • 测深标尺适用于2米(6.6英尺)至200米(660英尺)的深度
  • 具有坚固的外壳,完全密封的电子元件,无渗漏风险
  • 结构紧凑
  • 不会被冰冻损坏
  • 开口型或密封型线缆,长度由用户指定
  • 直管连接选项
  • 低功耗
  • 防雷保护
  • 允许超压

What's the Easiest and Quickest Way to Start Collecting Data and Access it Anywhere?

The Answer's in the Cloud.

eTracker is a cellular modem and "virtual" cloud-based data logger in one (meaning you don't need to install a separate data logger). Simply connect your sensor and a power source to eTracker and you're done. Configure (or reconfigure) anytime from any Internet-connected device, and use Stevens-Connect to retrieve your data, or forward it to your favorite software system.

技术参数

Supply voltage

6 - 28 VDC (12 VDC typical)

Current consumption

Average, SDI-12, one measurement per minute: 60 μA
Average, RS-485, one measurement per minute: 600 μA
Peak current, during response to host: 30 mA

Output

4-20 mA current signal, linearly corresponding to range

Operating temperature

-20 °C to 80 °C (-4 °F to 176 °F)

Storage temperature

-40 °C to 80 °C (-40 °F to 176 °F)

Pressure accuracy

± 0.1% of full scale

Temperature accuracy

± 0.25 °C

Wiring

Red: 6 - 28 Vdc
Black: GROUND
Blue: SDI-12
White: RS-485 A/+
Green: RS-485 B/-

Pipe threading

M14-1

Physical size

86.4 mm x 22.1 mm (3.4 in x 0.9 in)

Weight

Probe: 120 g (4.23 oz.)
Cable: 40 g per m (0.43 oz. per ft)

Stevens Water Monitoring Systems, Inc. | Portland, OR, USA

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