HMP155A-L Air Temperature and Relative Humidity Sensor

Accurate, wide temp range, higher-end sensor where higher accuracy is required

The HMP155A provides reliable relative humidity (RH) and temperature measurements for a wide range of applications. It uses a HUMICAP®180R capacitive thin film polymer sensor to measure RH over the 0 to 100% RH range. A PRT measures temperature over the -80° to +60°C range. This rugged, accurate temperature/RH probe is manufactured by Vaisala. 

Category:

To reduce the current drain, power can be supplied to the HMP155A only during measurement when the sensor is connected to the data logger’s switched 12 V terminal. Data loggers that do not have a switched 12 V terminal, such as the CR510 or CR7, can use the SW12V switched 12 V device to switch power to the sensor only during measurement. 

Benefits and Features 

    • Well-suited for long-term, unattended applications 
    • Accurate and rugged 
    • Mounts to a mast, crossarm, or user-supplied pole 
    • Compatible with most Campbell Scientific data loggers 
Electromagnetic Compatibility Complies with EMC standard EN61326-1 Electromagnetic
Filter Description Sintered PTFE
Housing Body Material PC
Housing Classification IP66
Voltage Output 0 to 1 Vdc
Average Current Consumption ≤ 3 mA (analog output mode)
Operating Voltage 7 to 28 Vdc
Settling Time 2 s (at power up)
Field-Replaceable Chip or Recalibrate Recalibrate
Tip Diameter 1.2 cm (0.5 in.)
Length 27.9 cm (11 in.)
Head Height 4 cm (1.6 in.)
Body Height 2.4 cm (0.9 in.)
Body Width 2.0 cm (0.8 in.)
Relative Humidity
Sensing Element HUMICAP 180R
Measurement Range 0 to 100% RH (non-condensing)
Response Time
  • The response time for the RH specification is for the HUMICAP 180R at 20°C in still air with sintered PTFE filter and a 0 to 75% RH step change.
  • 20 s (63% step change)
  • 60 s (90% step change)
Factory Calibration Uncertainty
  • The factory calibration uncertainty is defined as ±2 standard deviation limits. Uncertainty is at +20°C. Small variations are possible; see also the calibration certificate.
  • ±0.6% RH 0 to 40% RH
  • ±1.0% RH 40 to 97% RH
Accuracy
  • -NOTE- Accuracy specifications include non-linearity, hysteresis, and repeatability.
  • ±1% RH (at 15° to 25°C, 0 to 90% RH)
  • ±1.7% RH (at 15° to 25°C, 90 to 100% RH)
  • ±(1.4 + 0.032 × reading) % RH (at -60° to -40°C)
  • ±(1.2 + 0.012 × reading) % RH (at -40° to -20°C)
  • ±(1.0 + 0.008 × reading) % RH (at -20° to +40°C)
  • ± (1.2 + 0.012 × reading) % RH (at 40° to 60°C)
Air Temperature
Sensing Element PT 100 RTD 1/3 class B IEC 751
Measurement Range -80° to +60°C
Accuracy
  • ±(0.226 – 0.0028 x temperature)°C (-80° to +20°C)
  • ±(0.055 + 0.0057 x temperature)°C (+20° to +60°C)
Entire Temperature Range Refer to graph in probe manual.

 

Brochures: HMP155A Vaisala Temperature and Relative Humidity Probe

Download

Manuals: HMP155A Temperature and Relative Humidity Probe

Download

Product reviews

Review HMP155A-L Air Temperature and Relative Humidity Sensor

5 0% | 0 review
4 0% | 0 review
3 0% | 0 review
2 0% | 0 review
1 0% | 0 review
Review HMP155A-L Air Temperature and Relative Humidity Sensor
Choose a image
0 character ( Minimum of 10)
    +

    There are no reviews yet.

    No comments yet

    Related products

    Bộ thu thập và xử lý dữ liệu Granite 10

    Granite 10 Measurement and Control Data-Acquisition System

    Ideal for automotive testing applications, featuring CAN bus and CAN FD output
    Find out more
    Mô-đun Đầu vào Cổng Dòng điện 100 Ohm CURS100

    CURS100 100-Ohm Current Terminal Input Module

    Expands capabilities, allows data logger to measure additional types of sensors
    Find out more
    Datalogger ba kênh cho cảm biến dây rung CRVW3-NE

    CRVW3-NE Three-Channel Vibrating Wire Datalogger without Enclosure

    Vibrating Wire Data Logger Using patented VSPECT™ technology
    Find out more
    Bộ Ghi Dữ Liệu Dây Rung Ba Kênh CRVW3

    CRVW3 Three-Channel Vibrating Wire Datalogger

    Self-Contained Vibrating Wire Data Logger Using patented VSPECT® technology
    Find out more
    Bộ ghi đo tự động Datalogger CR6

    CR6 Automated Monitoring Platform

    Rugged, wireless edge device and gateway with built-in connectivity, designed for geotechnical, structural, and environmental projects
    Find out more
    Bộ ghi dữ liệu đo lường và điều khiển CR350

    CR350 Measurement and Control Datalogger

    Compact data logger with RS-485, ideal for small applications
    Find out more
    Bộ ghi dữ liệu đo lường và điều khiển CR310

    CR310 Measurement and Control Datalogger

    Compact data logger with ethernet, ideal for small applications
    Find out more
    Bộ ghi dữ liệu đo lường và điều khiển CR300

    CR300 Measurement and Control Datalogger

    Compact data logger, ideal for small applications
    Find out more

    Subscribe to Content

    If you need to copy the content, please leave your information, and we will respond as soon as possible. Sincerely, thank you!