Lutron Humidity, Dew Point, Temperature Meter (HT-315) with ATC

Lutron Humidity, Dew Point, Temperature (HT-315) with Automatic Temperature Compensation

• Combined humidity, temperature, and dew point measurements in one meter.
• 0.01 %RH resolution for humidity and 0.01 degree resolution for temperature.
• Pocket-sized with a separate humidity and temperature probe for easy and remote measurement.
• Fast response time for humidity measurements.
• High accuracy and precision.
• Dew point measurement capability.
• Manual and auto data logging with flexible sampling times.
• Can store up to 1000 readings with recall function.
• Simple operation with few panel buttons.
• Microprocessor circuit ensures maximum accuracy and additional features.
• Dual-display LCD for easy readout.
• Heavy-duty and compact housing case for easy portability and operation.
• Records maximum and minimum readings with recall function.
• Auto shut-off feature to save battery life.
• Data hold function to freeze the displayed value.
• RS232 PC serial interface for data transfer.
• Simultaneous display of humidity and temperature values.
• Low battery indicator on the display.
• Wide measurement range for humidity and temperature.
• DC 9V power adapter input socket.

General Specifications

• Circuit: Custom one-chip microprocessor LSI circuit.
• Display: 44 mm x 29 mm dual-function LCD.
• Measurement units: %RH for humidity, ℃ or ℉ for temperature, and dew point.
• Response time: Typically 5 to 30 seconds to reach 85% of the reading value.
• Temperature compensation: Automatic for humidity function.

Data Logger Specifications

• Manual logging: Press the data logger button to save a reading.
• Automatic sampling times: 1, 2, 10, 30, 60, 600, 1800, and 3600 seconds.
• Sampling time: Approximately 0.8 seconds per reading.
• Data hold: Freeze the display reading.
• Memory recall: Maximum and minimum values.
• Power-off: Auto shut-off to save battery life, or manual power-off by button.

Power Supply

• Power source: 006P DC 9V battery (alkaline or heavy duty).
• Power consumption: Approx. DC 4.6 mA.

Dimensions and Weight

• Main instrument dimensions: 135 x 60 x 33 mm (5.3 x 2.4 x 1.3 inches).
• Humidity sensor probe length: 197 mm (7.8 inches).
• Weight: 264 g (0.67 lbs) with battery.

Environmental Specifications

• Operating temperature for the meter: 0 to 50℃.
• Operating temperature for the probe: 0 to 80℃.
• Operating humidity: Main instrument less than 85% RH, humidity probe 0 to 95% RH.

Accessories Included

• Instruction manual: 1 PC.
• Humidity probe: 1 PC.

Optional Accessories

• RS232 cable (UPCB-02).
• USB cable (USB-01).
• Excel data acquisition software (SW-E802).
• Data acquisition software (SW-801-WIN).
• Excel data transfer software (SW-E2005).
• Data transfer software (SW-DL2005).
• Power adapter (ACV to DC 9V).

Electrical Specifications (23 ± 5℃)

• Humidity range: 10% to 95% RH.
• Humidity resolution: 0.01% RH.
• Accuracy for humidity readings:
  • ≥ 70% RH: ±(3% reading + 1% RH).
  • < 70% RH: ±3% RH.
• Temperature range: 0 to 80℃ (32 to 176℉).
• Temperature resolution: 0.01℃ or ℉.
• Temperature accuracy: ±0.8℃ or ±1.5℉.
• Dew point range:
  • ℃: -25.3 to 48.9℃, Resolution: 0.01℃.
  • ℉: -13.5 to 120.1℉, Resolution: 0.01℉.

Remarks

• Dew point value is calculated automatically from humidity and temperature measurements.
• Dew point accuracy includes the sum of humidity and temperature measurement accuracies.