- Details
- Category: Humidity Meters & Hygrometers

The Extech RH600 accurately measures and records dew point values in compressed air systems. This high-precision meter can assist production experts in maintaining product quality while avoiding pneumatic equipment damage, corrosion, and difficulties with cylinder and valve systems. The RH600 has a color graphical display and gives clear, stable readings, allowing you to monitor dew point temperatures down to -50°C (-58°F) under a maximum ambient pressure of 20 bar. Adjust the audible and visible warnings for temperature, relative humidity, and dew point thresholds. You can also effortlessly log and upload recorded data to a PC in CSV format to quickly generate inspection reports.
Dew Point | Range:
-40°C to 30°C (-40°F to 86°F),
Basic Accuracy:
±3.6°F (±2°C)
Range: -50°C to -40°C (-58°F to -40°F), Basic Accuracy: ±4.5°F (±2.5°) Max Resolution: 0.01° |
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Dimensions & Weight | 192 mm × 77 mm × 40 mm (7.5 in × 3.0 in × 1.6 in), 598 g (21.1 oz) |
Relative Humidity | Range:
15 to 100% RH,
Basic Accuracy:
±2% RH + 3% of reading
Range: 5 to 15% RH, Basic Accuracy: ±1% RH + 5% of reading Range: 0 to 5% RH, Basic Accuracy: ±0.025% RH +17.5% of reading Max Resolution: .01% RH |
Response Time | At flow rate 0.2 m/s, 1 bar pressure, 63% RH [90% RH] 0°C to 40°C Td (32°F to -40°F Td): 20 s [120 s] 40°C to 0°C Td (-40°F to 32°F Td): 10 s [20 s] |
Temperature | Range:
-10℃ to 60℃ (14℉ to 140℉) Max Resolution: 0.01° Basic Accuracy: ±0.3℃ (±0.54°F) |
Water Concentration | Range: 40 to 20,000 ppm
Max Resolution: 1 Basic Accuracy: ±(7.3 ppm + 8.3% of rdg) |
Data Logging | 32,000 data sets with time stamps |
Operating Conditions | -10°C to 60°C (14°F to 140°F), Pressure: 0 to 20 bar Accuracy at environment temperature: 16°C to 25°C (60.8°F to 77°F) |
Power | 3.7 V rechargeable Li-ion battery (included) |
- Details
- Category: Humidity Meters & Hygrometers

The SDL500 saves data to an SD card in Excel format. Measure the relative humidity, temperature, dew point, and wet bulb. The data sample rate is adjustable. Stores 99 manual readings and 20M readings on a 2GB SD card. Type K/J thermocouple input for high-temperature measurements. Large, backlit dual LCD display. Functions for recording/recalling minimum and maximum values, data holding, and automatic power off. Complete includes 6 AA batteries, an SD card, a carrying case, and a humidity/temperature probe..
Dew Point | -13.5 to 120.1 °F (-25.3 to 48.9 °C) |
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Dew Point Max Resolution | 0.1° |
Memory | 20M data records using 2G SD card |
Relative Humidity | 5% to 95% |
Relative Humidity Basic Accuracy | ±3% |
Relative Humidity Max Resolution | 0.1% |
Temperature (Air) | 32 to 122 °F (0 to 50 °C) |
Temperature (Air) Basic Accuracy | ±1.8 °F (±1 °C) |
Temperature (Air) Max Resolution | 0.1° |
Temperature (Type J) Basic Accuracy | -148 to 2192 °F (-100 to 1200 °C) |
Temperature (Type J) Max Resolution | ±(0.4% + 1.8 °F/1 °C) |
Temperature (Type K) Basic Accuracy | 0.1° |
Temperature (Type K) Max Resolution | -148 to 2372 °F (-100 to 1300 °C) |
Temperature (Type N) | ±(0.4% + 1.8 °F/1 °C) |
Temperature (Type N) Basic Accuracy | 0.1° |
Wet Bulb | -6.9 to 122 °F (-21.6 to 50 °C) |
Wet Bulb Max Resolution | 0.1° |
Certifications | CE |
Dimensions | 7.2 × 2.9 × 1.9" (182 × 73 × 47.5mm) |
Power | 6 × AA (1.5V) batteries |
Warranty | 3 years |
Weight | 23.1oz (655g) |
- Details
- Category: Humidity Meters & Hygrometers

SD700 saves data to an SD card in Excel format. Displays barometric pressure in three units: hPa, mmHg, and inHg. The triple LCD concurrently displays barometric pressure, temperature, and relative humidity. Dataloggers date and time stamp readings and store them on an SD card in Excel format for easy transfer to a PC. The data sampling rate can be set to 5, 10, 30, 60, 120, 300, or 600 seconds. Comes with (6) AAA batteries, an SD memory card, a universal AC converter, and a mounting bracket.
Memory | 20M data using 2G SD card |
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Pressure (hPa) | 10 to 1100 hPa |
Pressure (hPa) Max Resolution | 0.1 hPa |
Pressure (inHg) | 0.29 to 3248 inHg |
Pressure (inHg) Max Resolution | 0.01inHg |
Pressure (mmHg) | 7.5 to 825.0 mmHg |
Pressure (mmHg) Max Resolution | 0.1mmHg |
Relative Humidity | 10 to 90% |
Relative Humidity Basic Accuracy | ±(4% of reading + 1%) |
Relative Humidity Max Resolution | 0.10% |
Temperature (Air) | 32 to 122 °F (0 to 50 °C) |
Temperature (Air) Basic Accuracy | ±1.5 °F (0.8 °C) |
Temperature (Air) Max Resolution | 0.1 °F(°C) |
Certifications | CE |
Dimensions | 5.2 × 3.1 × 1.3" (132 × 80 × 32mm) |
Power | 6 × AAA (1.5V) batteries |
Warranty | 2 years |
Weight | 10oz (285g) |
- Details
- Category: Humidity Meters & Hygrometers

This Humidity/Temperature Datalogger stores data on an SD card in Excel format, allowing for easy transmission to a PC for analysis. It has a dual LCD that displays both relative humidity and temperature, as well as a data sampling rate of 5, 10, 30, 60, 120, 300, and 600 seconds. Each stored reading has a date and time stamp. Relative humidity ranges from 10 to 95%, and temperatures range from 32 to 122°F (0 to 50°C). Comes includes 6 AAA batteries, an SD memory card, a universal AC adapter, and a mounting bracket.
Datalogging Interval | 5, 10, 30, 60, 120, 300, 600 seconds or Auto |
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Memory | 20M data using a 2G SD card |
Relative Humidity | 10 to 90% |
Relative Humidity Basic Accuracy | ±4% |
Relative Humidity Max Resolution | 0.1% |
Temperature (Air) | 32 to 122°F (0 to 50°C) |
Temperature (Air) Basic Accuracy | ±1.5°F/0.8°C |
Temperature (Air) Max Resolution | 0.1°F/°C |
Certifications | CE |
Dimensions | 5.2 × 3.1 × 1.3" (132 × 80 × 32mm) |
Power | 6 × AAA (1.5V) batteries |
Warranty | 2 years |
Weight | 9.9oz (282g) |