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SHM40 Structural Humidity Measurement Kit

Vaisala HUMICAP® Structural Humidity Measurement Kit SHM40 - Measuring Humidity in Concrete
Vaisala HUMICAP 40 Years!


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    The Vaisala HUMICAP® Structural Humidity Measurement Kit SHM40 offers an easy and reliable solution for humidity measurements in concrete and other structures using the borehole method. In this method, a humidity probe is left in the borehole until the humidity in the hole has reached an equilibrium state and the stabilized values can be read.

    The interchangeable HMP40S probes connect easily to the HM40 indicator with a snap-on connector enabling convenient use of multiple probes with one indicator. The measurement data can be displayed for example in a stabilization graph. The rugged HMP40S probes are IP65 classified and conform to the ASTM-standard F2170.

    The standard contents of the SHM40 are:
    • HM40 indicator with adapter
    • HMP40S RH&T probe with a cable
    • Calibration certificate (ISO9001 compliant, NIST traceable)
    • 12 pcs plastic tubes (19266HM)
    • 12 pcs rubber plugs (233976)
    • 3 pcs protective covers with lid (19268HM)
    • Weather-proof carrying case with a shoulder strap
    Technical Specifications

     Technical Specifications

    HMP40S Probe


    Relative Humidity

    ​Measurement range ​0 ... 100 %RH
    Accuracy (incl. non-linearity, hysteresis, and repeatability):​ ​
        temperature range​ 0 °C ... +40 °C​
    ​    0 ... 90 %RH ​± 1.5 %RH
    ​    90 ... 100 %RH ​± 2.5 %RH
    ​    temperature range ​-40 °C...0 °C and +40 °C ... +80 °C
        ​0 ... 90 %RH ​± 3.0 %RH
    ​    90 ... 100 %RH ​± 4.0 %RH
    ​Factory calibration uncertainty at +20°C (68°F) ​
    ​0 ... 90 %RH​± 1.1 %RH
    ​90 ... 100 %RH​± 1.8 %RH
    ​Humidity sensor ​HUMICAP® 180R
    ​Stability ​± 2 %RH over 2 years


    ​Measurement range ​-40 °C ... +80 °C
    ​Accuracy over temperature range: ​
    ​    0 ... +40 °C ​± 0.2 °C
    ​    -40 ... 0 °C, +40 ... +80 °C ​± 0.4 °C
    ​Temperature Sensor ​Pt1000 RTD 1/3 Class B IEC 751


    ​Operating temperature range for probe ​-40 °C ... +80 °C
    ​Probe weight with standard cable ​31 g
    ​Probe housing material ​stainless steel
    ​Probe filter and sensor protection ​membrane filter with chrome
    ​coated ABS plastic
    ​Cable material ​Wire PVC / jacket PU
    ​Cable connector ​TRRS male 3.5 mm
    ​Probe housing classification ​IP65
    ​Borehole diameter needed ​16 mm
    ​Measurement depth with standard accessories
    min. 30 mm, max. 90 mm

    HM40 Indicator

    ​Operation temperature range for indicator ​-10 ... +60 °C
    ​Storage temperature range ​-30 ... +70 °C
    ​    Indicator with adapter ​240 g
    ​    SHM40 case with standard content ​3.7 kg
    ​Indicator materials ​PC/ABS blend, acrylic display lens
    ​Indicator adapter materials ​Nickel plated brass and plastic
    ​Indicator housing classification ​IP54
    ​Mechanical drop endurance ​1.0 m without the probe
    ​Power-up time ​< 3 s
    ​Alkaline batteries ​2 x AA sized, 1.5V (LR6)
    ​Operation time (Alkaline batteries) ​typical 100 hours
    ​(without backlight)
    ​Calculated variables ​Td, Tw, a, x, h
    ​Menu languages ​English, German, French, Finnish, Spanish, Swedish, Chinese (simplified), Russian, Japanese
    ​Display ​LCD (140 x 160 pixels)
    compatibility (EMC)
    ​European Union directive EN61326-1 for portable equipment

    Accessories and Spare Parts

    ​HM40 indicator with adapter and cable probe ​HM40S
    ​RH&T probe with cable ​HMP40S
    ​HM40 indicator with adapter ​HM40SINDI
    ​Quick connector adapter ​HM40SADAPTER
    ​Cable for RH&T probe ​HMP40SCABLE
    ​Long cable (2.7 m) for RH&T probe ​HMP40SCABLE2
    ​Plastic tube set (12 pcs) ​19266HM
    ​Rubber plugs (12 pcs) ​233976
    ​Weather-proof carrying case with SHM40 filling ​233815
    ​Protective cover with lid (3 pcs) ​19268HM
    ​USB recharger for HM40 indicator batteries ​229249SP
    ​Plastic grid with membrane filter for HMP40S probe​DRW010525SP
    ​Plastic flange set (12 pcs) ​26529HM
    ​Long rubber plug for wet concrete (12 pcs) ​26530HM

    For complete specifications, please see the brochure or user guide in "Documents". 
    Related Services
    • Repair Services 
    • Vaisala repair services include fault tracing and repair or replacement of failed components, as well as final testing to ensure your equipment is functioning properly. Repairs can be carried out on site or at one of our service centers.
    • Service Center Calibration 
    • Regular calibration ensures that your Vaisala equipment continues to provide accurate, high-quality data. We offer traceable, standards-compliant calibration services for almost all Vaisala products and partner with world-class couriers for rapid, trouble-free return of your equipment.
    • Spare Parts 
    • Get rapid access to the spare parts you need to maximize the uptime of your equipment and ensure reliable and accurate operation. In addition to standard spare part delivery, we also offer an express service where parts are shipped within one business day.
    • Warranty 
    • All Vaisala products and services are covered by a 12-month warranty as standard, with selected products covered for up to 24 months. During this period you benefit from free repair or replacement of faulty equipment. With Vaisala’s extended warranty, you get free repair or replacement for five years.