概览
HygroVUE™5 温度和相对湿度传感器是为常规气象和环境监测而设计的，它采用SDI-12通讯协议，可以连接任何支持SDI-12协议的数据采集器，简化了安装和编程工作。传感器元件可在现场更换，减少停机时间和校准成本，HygroVUE™5属于 HygroVUE™ 产品线中的入门级温湿度传感器。
优势与特点
- 使用组合的、预先校准的湿度和温度元件
- 可在现场更换元件，快速 进行重新校准
- SDI-12输出，允许长距离通信
- 数采编程简单
- 低功耗
- 工作电压范围广
- 封装设计坚固耐用
- 体积小，适用于小型防辐射罩
图像
技术说明
The HygroVue 5 sensor has a user-replaceable chip element that incorporates both a temperature sensor and an RH sensor. Each element is individually calibrated with the calibration corrections stored on the chip.
Electronics within the HygroVue 5 control the measurement made by the sensor element, apply temperature and linearization corrections to the readings, and present the data via SDI-12 to a data logger.
A stainless-steel mesh filter minimizes the effects of dust and dirt on the sensor, while allowing air exchange around the sensor element and reducing the chance that condensation remains inside the filter cap. A small PTFE membrane filter is bonded to the surface of the element, which prevents any finer dust or mold from directly influencing the measurement.
The sensor housing is designed to withstand permanent exposure to all weather. It fits into a range of radiation shields, including compact shields such as the RAD06 6-Plate Solar Radiation Shield.
For improved reliability, the sensor is factory fitted with a fixed length of cable, and the sensor body is then potted to completely seal the electronics and cable joint. A range of cable lengths is available.
产品规格
| 传感器元件 | SHT35 derivative (specially coated for reliability) |
| 校准可追溯性 | NIST and NPL standards |
| 供电电压 | 7 to 28 Vdc |
| 预热时间 | Sensor is normally powered all the time. If power is switched off, allow 1.8 s for sensor to power up. |
| 外壳材料 | White PET-P |
| 密封等级 | IP67 (electronics housing) |
| 传感器保护 | Outer glass-filled polypropylene cap fitted with a stainless-steel mesh dust filter with nominal pore size of < 30 µm. The sensor element is fitted with a PTFE protective film with a filtration efficiency of > 99.99% for particles of 200 nm or larger size. |
| EMC 兼容性 | Tested and conforms to IEC61326:2013 |
| 校准 | The sensor element is individually calibrated during manufacture. |
| 现场可更换芯片或重新校准 | Field-replaceable chip |
| 直径 | 12.5 mm (0.49 in) at sensor tip, maximum 16 mm (0.63 in) at the cable end |
| 长度 | 115 mm (4.52 in) sensor only, without cable |
Maximum Current Drain |
|
| 静态 | 50 μA typical |
| 工作 | 0.6 mA (takes 0.5 s) typical |
Air Temperature |
|
| 量程 | -40 to +70°C |
| 精度 |
|
| 长期漂移 | < ±0.03°C per year |
| 分辨率 | 0.001°C |
| 重复性 | 0.04°C Values are 3 standard deviations of 25 measurements at constant temperature. |
| 响应时间 | 130 s (63% response time in air moving at 1 m/s) |
| 单位 | Degrees Celsius |
Relative Humidity |
|
| 量程 | 0 to 100% RH |
| 精度 |
|
| 其他温度下的误差 | < ±1% RH (over -40 to +60°C) |
| 短期滞后 | < ±1% RH |
| 长期稳定性 | ±0.5% per year (maximum drift in clean air conditions) |
| 分辨率 |
|
| 带过滤器的响应时间 | 8 s (63% response time in air moving at 1 m/s at 25°C) |
兼容性
Please note: The following shows notable compatibility information. It is not a comprehensive list of all compatible products.
数据采集器
| Product | Compatible | Note |
|---|---|---|
| CR1000X (retired) | ||
| CR300 (retired) | ||
| CR3000 (retired) | ||
| CR310 | ||
| CR350 | ||
| CR6 | ||
| CR800 (retired) | ||
| CR850 (retired) |
Additional Compatibility Information
Digital SDI-12 output which is fully SDI-12 V1.3 compliant (verified with an SDI-12 Verifier (www.sdi-12-verifier.com/). It is compatible with SDI-12 V1.4 recorders.
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