The RHXL3SD comes with a temperature-humidity probe that is
used to make the first three types of measurement. Surface temperature
measurements are made using an optional Type K or J thermocouple.
Several features and capabilities enhance the RHXL3SD’s versatility.
Among them are automatic temperature compensation for dew
point, wet-bulb and thermocouple measurements; the ability to hold
readings and display maximum and minimum readings; and an
automatic power off function that extends battery life. Because it is
microprocessor-based, the RHXL3SD can make full use of the
portability, reliability and large storage capacities that SD memory
cards offer. Measurements can be made automatically at any sampling
rate between one second and one hour. After the instrument
time-stamps and stores the measurements (Temperature and Humidity only) on an SD card plugged into it, the user can remove the card and plug it into a laptop or desktop computer either directly or via a USB card reader. The logged data is stored on the card as files that can be opened by Microsoft’s Excel application. Unit accepts SD memory cards as large as 16 GB. The RHXL3SD has a backlit 2½" diagonal display and is powered
by 6 “AA” alkaline batteries or an optional AC adaptor.
SPECIFICATIONS Display Type: LCD with green backlight Display Size: 52 x 38 mm (2.05 x 1.5") Parameters Measured: Temperature, relative humidity (RH), dew point, wet-bulb temperature Measurement Range: Temperature (Probe): 0 to 50°C (32 to 122°F) RH (probe): 5 to 95% RH 5 to 95% for Dew Point: -25.3 to 48.9°C (-13.5 to 120.1°F) Wet-Bulb Temperature: -21.6 to 50°C (-6.9 to 122°F) Measurement Accuracy: ±0.8°C (±1.5°F) for temperature;>/= 70% RH: +/- (3% rdg + 1% RH), < 70% RH: +/- 3% RH; sum of temperature and humidity accuracies for dew point and wet bulb temperature Measurement Resolution: 0.1° (°F or °C) for temperature and humidity Thermocouple Input Ranges and Accuracy: Type K: -50 to 1300°C (±0.4% + 0.5°C)
-50.1 to -100°C (±0.4% + 1°C)
-58 to 2372°F (±0.4% + 1°F)
-58.1 to -148°F (±0.4% + 1.8°F) Type J: -50 to 1200°C (±0.4% + 0.5°C)
-50.1 to -100°C (±0.4% + 1°C)
-58 to 2192°F (±0.4% + 1°F)
-58.1 to -148°F (±0.4% + 1.8°F) Display Update: 1 second Sampling Time Options: 0, 1, 2, 5, 10, 30, 60, 120, 300, 600, 1800 or 3600 seconds (0 seconds to 1 hour) Storable/Recallable Readings: Max, min SD card capacity 1 to 16 GB Operating Temperature: 0 to 50°C (32 to 122&176;F) Operating Relative Humidity: 0 to 85% Power Supply: 6 alkaline "AA" batteries (included) or optional 9 Vdc AC adaptor Power Consumption: 3.5 mA DC (normal operation, with backlight off and SD card not saving data); 28 mA DC with backlight on and card saving data; 40 mA DC with backlight on and card saving data Dimensions: 177 H x 68 W x 45 mm D (7.0 x 2.7 x 1.9") Weight: 489 g (1.08 lb)
† All amounts shown in USD Note: Comes complete with probe, 2 GB SD card, 6 "AA" batteries, soft carrying case, Type K thermocouple and operator’s manual. Ordering Example: (1) RHXL3SD handheld thermometer/hygrometer data logger, USD495.00