DM650/HM Humidity & Temperature Gauge

Brand: Status Instruments

The DM650HM humidity gauge has been designed to display % relative humidity, temperature, dew point and delta temperature, on a 6- digit LCD display.

The instrument offers an advanced display-mode, allowing the user to display not only process variables but one or two (1 – 32) character messages.

This feature is further enhanced by the ability to split a process range into eight user-set bands, each band having independent user selected messages.

The DM650HM also has a changeover-type relay with multiple programmable options allowing the user to set a high, low or deviation alarm. Wall and duct-mounted versions are available.
  • %rh, temperature, dew point, delta t
  • Alarm relay / user set display messaging
  • Usb and nfc interface
  • Battery powered
  • 5000 point data logger


Update Rate

  • 500 seconds

Relay Response Time

  • < 10 s


  • 1 x (AA 3.6 V lithium)

Battery Life

  • 1-year Min.

Clock Accuracy

  • ± 2 seconds per month typically

Ambient Temperature

  • Operating/storage (-30° to 70) °C

Ambient Humidity

  • Operating/storage (10 to 90) %RH non-condensing

Protection Housing Stem

  • IP65, cable entries must be sealed to IP65 to maintain Measurement tip not sealed, protect from splashes

USB Configuration Ambient

  • (10 to 30) °C

Output Relays

  • Two-part screw connector

USB Connection

  • USB mini B socket


  • ABS grey base, grey clamp ring: Polycarbonate screen

Display Cover

  • Polycarbonate, clear

Case Entries

  • M20

Front of Display Diameter

  • 65 mm

Weight (approximate)

  • 200 g


  • BS EN 61326

Ingress Protection

  • BS EN 60529


  • Directive 2011/65/EU
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