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Hygrolog HL21D

 




Price starts at $295.00

Product Code : HL21D

Manufacturer : Rotronic

Digital Display:
Mounting:
Circuit Type:
Output Signal Type:
Temp. Output Span:

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Download or View this product's / series details and specifications Specifications (PDF)

General Specifications:

  • HL20: records up to 20,000 pairs of relative humidity and temperature values
  • HL21: records up to 20,000 pairs of temperature values
  • Non-volatile EEPROM memory
  • Internal sensors (no apparent probe). Temperature is measured with a Pt100 RTD. Relative humidity is measured with a ROTRONIC Hygromer IN1 capacitive sensor.
  • Humidity range: 0 to 100 %RH (non condensing)
  • Temperature range: -10 to 60°C (14 to 140°F) - models with LC display: 0 to 50°C (32 to 122°F)
  • Accuracy at 23 °C: ± 0.8 %RH and 0.1 °C

Interface & Display

  • Function key: starts and stops data logging, turns optional LC display on and off
  • Optional LC display with backlight (values, message bar and battery charge indicator)
  • Connector for data download, configuration and log function programming

Required Accessories

  • PC with the ROTRONIC HW4 software installed (version 2.4.0 or higher)
  • Cable AC3006 (plugs into a USB port of the PC)

Power

  • 3 x AA batteries (1.5V)
  • Up to 20 months of data recording without replacing the batteries.

Other Features

  • English or metric unit system
  • Real time clock powered for up to 4 hours without batteries
  • Programmable alarm function (out-of-limit value)
  • Automatic sensor failure alarm
  • Status indicator (green and red LED). The green side of the LED flashes every 5 seconds when logging is active. The red side of the LED flashes every 5 seconds when a measured value is out of limits or when the logger requires attention (low battery, memory full, major sensor failure – such as open or shorted sensor)
  • Display Sleep function: substantially extends the lifetime of the battery
  • Simulator function (fixed output signals) for validating the recording function
  • HL20: can be set compute and display the dew or frost point
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