Rotronic HL-20D Data Logger for Humidity and Temperature (0~100%RH; 0~50°C)

- Humidity measurement

Measurement method: ROTRONIC HYGROMER® IN-1

Measurement range: 0...100 %rh (non-condensing)

Accuracy at 23 °C: ±1.3 %rh @ 0…10 %rh

±0.8 %rh @ 10…60 %rh

±1.3 %rh @ 60…100 %rh

Repeatability: 0.3 %rh

Response time: Typical 3 min. (Depends on air flow)

Long-term stability: < 1 %rh / year

- Temperature

Measurement method: PT100 RTD (IEC 751 Class A)

Measurement range: 0…50 °C

Accuracy at 23°C: ±0.3 °C

Repeatability: 0.05 °C

Response time: Typical 10 min. (depends on air flow)

Long-term stability: < 0.1 °C / year

- Dew point

Measurement method: Calculation (from %rh and °C)

Dew or frost point (user configurable range)

- Logging function

Logging modes: Start-Stop (recording stops when memory is full)

Loop: oldest data is dumped to make room for the latest data

Logging interval: Min 5 sec. Up to 1 hour in 5 sec. increments

LED indicator: 5 sec. green flash when recording data

5 sec. red flash for out-of-limit value or logger problem

- General specifications

Device Type: Humidity-temperature data logger with internal sensor(s)

Battery type: 3 x AA (1.5 V) alkaline

Battery lifetime: Depends on log interval and other settings.

Start-up time: 1.9 s (typical)

Data refresh rate: 1.7 s (typical)

- Storage & recording specifications

Recording capacity: 20'000 value pairs

Recorded parameter(s): Relative humidity and temperature

Record media : Internal EEPROM non volatile, not removeable

- Service & data interface specifications

Interface type: UART (Universal Asynchronous Receiver Transmitter)

Max. service cable length: 5 m (16.4 ft)

- Display & housing specifications

Display: LC, 1 or 2 decimals resolution, blacklight, alarm and low battery indication

Housing material: ABS

IP protection: IP 40

Dimensions: 130 x 72 x 32 mm (5.1 x 2.8 x 1.3”)

Weight: About 210 g (7.4 oz)

DATASHEET

MANUAL