Hygrometers
Temperature and humidity are key factors in maintaining optimal comfort levels and good indoor air quality. Quickly and conveniently take accurate humidity and temperature readings with Sper Scientific line of humidity meters.
Bluetooth Hygrometer
Wirelessly display, log and transfer readings including: humidity, wet bulb, dew point and air temperature.
Sper Scientific’s Bluetooth® Hygrometer Meter is small, light, and simple to use. Displays humidity, wet bulb, dew point and air temperature in °C or °F on the meter’s large 1-½” backlit display. Features minimum and maximum hold (peak) and data hold functions.
The meter offers the convenience of Bluetooth® for wireless communication with free iOS and Android smart phone Apps. Results can also be remotely viewed on your smartphone in real time, saved and exported. This enables the meter to be used as a remote wireless probe and as a datalogger. Comes ready to use with tripod screw, instructions and a 9V battery. N.I.S.T. traceable certificate of compliance available.
Dimensions: 8″ × 2″ × 1½” (204 × 54 × 36 mm)
Weight: 6 oz. (172 kg)
*Certification Option
N.I.S.T. traceable Certificate of Compliance available at additional cost (Select option above).
| Range | Resolution | Accuracy | |
|---|---|---|---|
| RH | 0 to 100% | 0.1º | ±3.5% RH (20 to 80% RH) |
| Dry bulb (ambient) Temperature | -4 to 140ºF -20 to -60ºC | 0.1% 1 ppm | ±0.9ºF / 0.5ºC (0 to 40ºC) ±1ºC / 1.8ºF (-20 to 0, & 40 60ºC) |
| Wet Bulb Temperature | 32 to 140ºF 0 to -60ºC | 0.1% 1 ppm | ±0.9ºF / 0.5ºC (0 to 40ºC) ±1ºC / 1.8ºF (-20 to 0, & 40 60ºC) |
| Dew Point Temperature | -4 to 140ºF -20 to -60ºC | 0.1% 1 ppm | ±0.9ºF / 0.5ºC (0 to 40ºC) ±1ºC / 1.8ºF (-20 to 0, & 40 60ºC) |
Bluetooth Datalogging Thermo-Hygrometer
Wirelessly display, log and download readings
This portable Thermo-Hygrometer displays RH / ambient temperature / dew point / wet bulb and thermocouple probe temperature on a large multi-line, back-lit LCD. Fast response with high accuracy. Automatically record and store up to 32,000 data points per parameter. Wireless Bluetooth® transmission eliminates the need to remove the meter to the computer to download data. Previously recorded or real-time data can be streamed to the computer software or phone app from up to 100 feet away. You may also manually record 100 data points directly from the keypad.
User adjustable auto power off timer, audible and visible Hi/Lo alarms, min/max/avg. hold function, and fold-out easel back. Comes ready to use in a protective foam-lined case, with four AAA batteries, type K beaded wire probe, bi-directional USB computer/power cable, free downloadable Windows software and Android (version 4.4 “KitKat and above”) and iOS phone apps. Will also communicate with your PC via the USB cable.
N.I.S.T. traceable Certificate of Compliance available at additional cost (Select option above).
- Temperature / RH / Dew Point / Wet Bulb
- K, J, E, N, R, S or T Thermocouple Probes
- Bluetooth®
- Hi / Lo Alarms
- Min / Max / Ave
Dimensions: 11¼” × 2½” × 1¼” (284 × 75 × 29 mm).
Weight: 10 oz (290 g).
| Type | Range | Resolution | Accuracy (excluding probe error) |
| Temperature K: | -328 to 2501°F (-200 to 1372°C) | 0.1°F <1000°F 1°F ≥1000°F 0.1°C <600°C 1°C ≥600°C | ±(0.1%rdg +1.3°F) ±(0.1%rdg +0.7°C) Below -148°F (-100°C) ±(0.5%rdg +1.3°F) ±(0.5%rdg +0.7°C) |
| Temperature J: | -328 to 1832°F (-200 to 1000°C) | ||
| Temperature E: | -328 to 1382°F (-200 to 750 °C) | ||
| Temperature T: | -328 to 752°F (-200 to 400°C) | ||
| Temperature N: | -328 to 2372°F (-200 to 1300°C) | ||
| Temperature R/S: | -32 to 3212°F (0 to 1767°C) | 0.5°F <1000°F 1°F ≥1000°F 0.2°C <600°C 1°C ≥600°C | ±(0.2%rdg +2.5°F) ±(0.2%rdg +1.4°C) |
PROBE: 800020P | |||
Sensor Type: Semi-Conductor humidity and temperature sensor | |||
| Range | Resolution | Accuracy |
RH | 0 to 90%RH | 0.1%RH | 10%RH to 90%RH |
Wet bulb | -4 to 140°F (-20°C to 60°C) | 0.1°F, 01°C | -4°F to 140°F |
Dew point | -58 to 140°F (-50°C to 60°C) | 0.1°F, 01°C | |
Temperature | -4 to 140°F (-20°C to 60°C) | 0.1°F, 01°C |
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| |||
Response Time | Humidity: 60 sec. in slowly moving air | ||
Sensor hysteresis: | <1.5%RH with excursion of 90% to 10% to 90% | ||
Temperature coefficient: | 0.1 x (specified accuracy) per 1°C [<73.4°F (23°C) or >73.4°F (23°C) | ||
Bluetooth Relative Humidity / Temperature / Pressure Logger
Records up to 16,000 data points per parameter with date/time stamps in either metric or imperial units of measure.
A compact design with the convenience of Bluetooth® streaming to a smartphone App for data storage and sharing. Once the dataset is complete, there is no need to attach the device to a computer to retrieve comprehensive reports. Simply download a full-color graphic report to the phone app wirelessly and e-mail to any computer for printing or further analysis in Excel.
You can also view a quick summary of data recordings anytime on the app. The free Android or iOS app communicates with up to 3 loggers simultaneously. Humidity, temperature, and barometric pressure cycle automatically on the large LCD screen while Hi/Low alarms are clearly indicated at a distance by the color-coded bright LED light on the housing. An optional audible alarm matches this warning from the phone. Quickly view Min/Max at any time by pushing a button on the device without interfering with data logging.
Comes with a CR2 Lithium battery that will power the unit for approximately 72 days. Freestanding or wall mount with either flip-out tab or built-in magnet. EN12830:2018, GMP, GLP compliant.
Dimensions: 3” x 2” x 1” (78 x 50 x 23 mm)
Weight: 2.3 oz (66 g)
*Certification Option
N.I.S.T. traceable Certificate of Compliance available at additional cost (Select option above).
Dimensions: 3” x 2” x 1” (78 x 50 x 23 mm)
Weight: 2.3 oz (66 g)
| Range | Resolution | Accuracy | |
| Temperature: | -22 to 158°F -30 to 70°C | 0.1°F/C | ±1.0°F ±0.5°C |
| RH: | 0.1 to 80% | 0.1% | ±3% (@25°C & 10 to 80% RH) otherwise ±5% |
| Barometer: | 300 to 1100 hPa 8.9 to 32.5 inHg | 1 hPa 0.1 inHg | ±3 hPa (0 to 60°C) ±5 hPa (-20 to 0°C) |
Wireless Humidity and Temperature Monitor Set
Monitor Relative Humidity & temperature inside an environmental chamber or clean room without opening the door.
Place the weatherproof (IPX3) sensor outdoors, in greenhouses, warehouses, air ducts and other hard to reach places and continuously monitor ambient RH & temperature from a remote location. The wireless sensors broadcast to the monitor from up to 100-ft (30M) away without obstructions, using a wireless RF signal.
The monitor displays the local and remote temperatures in ºC or ºF, recalls min/max on both, and indicates when the batteries are low in both the sensors and monitor. It also displays user adjustable, audible and visible, Hi / Lo Alarms, on both temperature and relative humidity, for the base unit and the remote sensors. Wall mountable.
- Includes one sensor that also displays local relative humidity & temperature
- Each monitor can be paired with up to 2 additional sensors (sold separately).
- Comes with 4 AAA batteries for the monitor and sensor (2 per device).
Dimensions:
Monitor: 3 1/8″ x 3 1/8″ x 1 1/4″ (80 x 80 x 30 mm)
Sensor: 4 1/2″ x 2 1/2″ x 1″ (110 x 60 x 30 mm).
Weight:
Monitor: 4 oz (113 g) Sensor: 4 oz (113 g) with batteries.*Certification Option
N.I.S.T. traceable Certificate of Compliance available at additional cost (Select option above).
| Thermometer/ Hygrometer Indoor Display Unit | |||
| Range | Resolution | Accuracy | |
| Operating Temperature: | 14°F to 140°F -10°C to 60°C | 0.2°F 0.1°C | ±2°F ±1°C |
| Operating RH%: | 0 to 95% @25°C (77°F) | 1% RH | ±5% |
| Remote Wireless Sensor | |||
| Range | Resolution | Accuracy | |
| Operating Temperature: | -4°F to 158°F -20°C to 70°C | 0.2°F 0.1°C | ±2°F ±1°C |
| Operating RH%: | 10 to 95% @25°C (77°F) | 1% RH | ±5% |
| RF Transmission Frequency: | 433 MHz | ||
| RF Transmission Range: | 30 meters in open area | ||
| Temperature Sensing Rate: | 43 to 47 seconds | ||
Humidity/Temperature Monitor
Large Display Digital Humidity Temperature Monitor
Simultaneously monitors both temperature and humidity on an extra large 3-3/16 x 2½” dual display which can be read from across a room. Monitor humidity and temperature in labs, chemical storage areas, clean rooms, stock rooms, warehouses, factories, greenhouses, and outdoors. Recall min/max temperature and min/max humidity readings over any time period or have it automatically reset itself every 24 hours. Stand or wall mount. Comes with 1 AAA battery which lasts a full year.
- Sper Scientific 800016 Digital Humidity Temperature Monitor – Large Display- Simultaneously monitors both temperature and humidity on an extra-large 3-3/16 x 2½” dual display which can be read from across a room
- Recall min/max temperature and min/max humidity readings over any time period or have it automatically reset itself every 24 hours
- Large Display
- Temperature: Range -58 to 158°F (-50 to 70°C) | Resolution 0.1°F or C | Accuracy ±2°F (±1°C)
- RH: Range 10 to 99% | Resolution 1% | Accuracy ±5%
- 5 Year Warranty
*Certification Option
N.I.S.T. traceable Certificate of Calibration available at additional cost (Select option above).
| Range | Resolution | Accuracy | |
| Temperature | -58 to 158°F (-50 to 70°C) | 0.1°F or C | ±2°F (±1°C) |
| RH | 10 to 99% | 1% | ±5% |
Indoor/Outdoor Humidity/Temperature Monitor
Simultaneously Displays Internal and External Temperature and Relative Humidity.
The remote ambient temperature/relative humidity sensor is mounted on a cord over 4-ft long. Place the highly accurate sensor inside a desiccator, refrigerator, drying or other environmental chamber and view simultaneous displays of temperature and relative humidity outside on the large LCD display.
Recalls min/max readings on both parameters. °C and °F selectable. Wall mounted or free standing. Comes with 1 AAA battery which lasts a full year.
- Clear digital readout easy to see
- 5 year warranty
Dimensions: 4 ¼” x 3¾” x 7/8” (110 x 97 x 20 mm)
Weight: 6 oz (170 g)
*Certification Option
N.I.S.T. traceable Certificate of Calibration available at additional cost (Select option above).
| Range | Resolution | Accuracy | |
| Inside Temperature | 32 to 122°F (0 to 50°C) | 0.1°F or C | ±2°F (±1°C) |
| Outside Temperature | -58 to 158°F (-50 to 70°C) | 0.1°F or C | ±2°F ±1°C) |
| RH | 10 to 99% | 1% | ±5% |
Humidity/Temperature Monitor with Remote Temperature Sensor
Simultaneously displays internal and external temperature on a 3-3/16″ x 2½” LCD, large enough to be read across a room.
Useful as an indoor/outdoor thermometer, in incubators or anywhere simultaneous internal and external readings are required. Has min/max temperature memory. Can be wall mounted or freestanding with easel back. Recall min/max readings over any time period or have it automatically reset itself every 24 hours. The outdoor sensor is mounted on a 9½’ cable. Comes with 1 AAA battery which lasts a full year.
- 33/16″ x 21/2″ LCD
- Large enough to be read across a room
- Recall min/max readings over any time period or have it automatically reset itself every 24 hours
- The outdoor sensor is mounted on a 9-1/2 foot cable
- Comes with 1 AAA battery which lasts a full year
Dimensions: 4 ¼” x 4″ x 7/8″ (110 x 102 x 20 mm)
Weight 5 oz (142 g)
*Certification Option
N.I.S.T. traceable Certificate of Compliance available at additional cost (Select option above).
| Range | Resolution | Accuracy | |
| Inside Temperature | 32 to 122°F (0 to 50°C) | 0.1°F or C | ±2°F (±1°C) |
| Outside Temperature | -58 to 158°F (-50 to 70°C) | 0.1°F or C | ±2°F (±1°C) |
| Relative Humidity: | 10 to 99% | 1% | ±5% |
Relative Humidity & Temperature Pen
Pen-Size Meter that Measures Humidity & Temperature Including Min/Max & Delta.
Technicians in HVAC, labs, industry and environmental studies can carry this sturdy metal pen anywhere for quick readings of RH (Relative Humidity) and ambient temperature. Simultaneously displays RH and temperature in °C or °F. Will also show a continually updated ∆ delta (difference) from a starting point.
The pen stands upright on its base, enabling unobstructed airflow around the sensor, and recalls high and low readings. Comes in a protective foam lined metal case with a standard AAA battery and instructions.
- USA Service & Certification
- Humidity & Temperature – Min / Max
- Delta (Differential) Measurement
- 5 year warranty, CE, RoHS
Datalogging Relative Humidity Temperature Pen
Records up to 32,000 data points that can be downloaded by plugging the pen directly into a USB port – no cradle or cable necessary.
Data logging can be programmed to begin immediately, at a predetermined time, activated by the unit’s push-button, or to continually roll over after a set number of data points. Green and red led lights indicate data logging and alarms.
Comes with software, 3.6V ½ AA battery (3.6V ER14250), tripod screw and a wrist strap.
Can also be used with an optional AC adapter #800003
- Air Temperature
- RH
- Dew Point
- Wet Bulb
- 5 Year Warranty, CE, RoHS
Dimensions: 1″ × 5¼” (25 × 133 mm)
Weight: 1.2 oz (34 g)
*Certification Option
N.I.S.T. traceable Certificate of Compliance available at additional cost (Select option above).
| Range | Resolution | Accuracy | |
| Temperature: | -40 to 185°F -40 to 85°C | 0.1°F or C | ±0.6°C / 0.9°F (-20 to 50°C) otherwise ±1.2°C, ±2°F |
| Humidity: | 0.1 to 99.9% | 0.1% | ±3% (@25°C & 10 to 99% RH) otherwise ±5% |
Relative Humidity & Temperature SD Card Logger
Reads Relative humidity (RH), ambient temperature, dew point and wet bulb, and functions as a type K or J thermometer.
Records data onto standard SD memory cards (like a digital camera) for unlimited data storage. The removable SD card is easy to transport and insert into a computer’s memory card slot or SD card reader. Uploads pre-formatted data to Excel, without the need for additional software and cables. Additional SD cards are readily available in a variety of memory sizes.
Each data set includes temperature, RH, time and date. Features min/max, auto power off, low battery indicator and hold function. Also reads thermocouple temperature with optional probes. This well-made unit is extremely accurate with fast response times and includes a fold-out tripod and large, easy-to-read backlit LCD. Comes ready to use in a soft carrying case complete with a detachable probe, 6 AA batteries, instruction manual and an SD card. Uses optional USB Power Cable (840058), or AC Adapter (840097).
Dimensions: 7″ × 2¾” × 2″ (178 × 70 × 51 mm)
Weight: 1 lb (454 g)
*Certification Option
N.I.S.T. traceable Certificate of Compliance available at additional cost (Select option above).
| Range | Resolution | Accuracy | |
| RH | 5 to 95% RH | 0.1 | ≥70% RH ± 3% rdg + 1% RH, < 70% RH ± 3% RH |
| Ambient Temp. | -0 to 50ºC, -32 to 122ºF | ±0.8ºC, ± 1.5ºF FS | |
| Dew Point ºC | -25.3 to 48.9ºC | Sum of RH & TA accuracies. Calculated automatically from RH & temperature measurement. | |
| Dew Point ºF | -13.5 to 120.1ºF | ||
| Wet Bulb ºC | -21.6 to 50ºC | ||
| Wet Bulb ºF | -6.9 to 122ºF | ||
| Type K | -58 to 2372ºF, -50 to 1300ºC | ± (0.4% + 1ºC ) FS ± (0.4% + 1.8ºF) FS | |
| Type J | -58 to 2192ºF, -50 to 1200ºC |
Smartphone Relative Humidity / Temperature Probe
Turns any smartphone into a Datalogging Humidity / Temperature meter.
Simply plug into the earphone jack of newer smart phones. Free Android and iPhone apps display ambient relative humidity, temperature, wet bulb, dew point as well as minimums and maximums. The App also enables you to log and graph all of the above data as well as attach a photo of the location with RH, Temperature along with GPS coordinates displayed directly onto the image. Set multiple audible and visible, Hi-Lo alarms on both parameters. Send both record-stamped photos and Excel-formatted data via email or other media options. Comes with additional Apple adapter and small HDMI adapter. No battery required.
Dimensions: 2 1/8″ x 3/4″ x 3/8″ (54 x 18 x 9 mm)
Sensor: 4 1/2″ x 2 1/2″ x 1″ (110 x 60 x 30 mm).
Weight: (Monitor) 0.25 oz (7 g)
- Temperature Range: -4°F to 140°F -20°C to 60°C
- Resolution: 0.1°F 0.1°C
- Accuracy: ±1.8°F ±1°C
- Relative Humidity: Range 20 to 95%
- Resolution 1%
- Accuracy ±5% (30 to 80%)
- 1 Year Warranty, CE, RoHS
| Range | Resolution | Accuracy | |
| Temperature: | -4°F to 140°F -20°C to 60°C | 0.1°F 0.1°C | ±1.8°f ±1°C |
| Relative Humidity: | 20 to 95% | 1% | ±5% (30 to 80%) |
Self-Contained Temperature and Humidity Datalogger with Docking Station
Temperature and Humidity Datalogger Logs up to 16,000 Readings
These self-contained Relative Humidity (RH)/Temperature Dataloggers excel in a wide range of applications where regulatory compliance is required, like food and drug production, shipping and storage, greenhouses, refrigerators, art galleries, museums, HVAC, process control, meteorology, agriculture or laboratories. The scalability of this Datalogger provides for an unlimited number of additional Dataloggers being used by the same software.
Simply place the Datalogger in its docking station and program it using your computer and the Datalogger’s own software. You can set it to read temperature and relative humidity in intervals of 1 second to 2 hours and for visual min/max alarms if desired. The flexibility of this Datalogger allows you to choose to begin recording immediately, at a predetermined time, or via external activation.
Each Datalogger comes with built-in sensor, wall mount and LEDs that flash as it samples. Features a direct LCD* display of current ambient temperature and RH. Each Datalogger takes up to 16,000 readings. An internal clock stores the date and time with each reading and non-volatile memory ensures that data will not be lost even if the battery dies or is removed. When monitoring is complete simply return the Datalogger to its docking station, connect the station to your computer using the USB cable included, and start to download and view results on your computer using the provided software.
Set includes one Datalogger, docking station with computer cable, free downloadable software, battery and instructions. Additional sensors are available here.
NOTES:
LCDs do not work reliably below 20°C or above 51°C.
If you have the Old Model 800054 with RS232 port/cable, you will need to use this software: 800054-RS232 Software.
Dimensions: 3″ × 2″ × ⅞” (76 × 51 × 22 mm)
Weight: 3 oz (85 g)
*Certification Option
N.I.S.T. traceable Certificate of Calibration available at additional cost (Select option above).
| Range | Resolution | Accuracy | |
| Temperature | -40 to 185ºF & -40 to 85ºC | 0.1° | ±0.6ºC (-20 to 50ºC), ±1.2ºC (-40 to 20ºC & 51 to 85ºC) |
| RH | 0 to 100% | 0.1% | ±5% RH |
Additional Sensor for Temperature and Humidity Datalogger
Additional Sensor for Temperature and Humidity Datalogger
Use with Sper Self-Contained Datalogger – Part #800054
These self-contained Relative Humidity (RH)/Temperature Dataloggers excel in a wide range of applications where regulatory compliance is required, like food and drug production, shipping and storage, greenhouses, refrigerators, art galleries, museums, HVAC, process control, meteorology, agriculture or laboratories. The scalability of this Datalogger provides for an unlimited number of additional Dataloggers being used by the same software.
Simply place the Datalogger in its docking station and program it using your computer and the Datalogger’s own software. You can set it to read temperature and relative humidity in intervals of 1 second to 2 hours and for visual min/max alarms if desired. The flexibility of this Datalogger allows you to choose to begin recording immediately, at a predetermined time, or via external activation.
Each Datalogger comes with built-in sensor, wall mount and LEDs that flash as it samples. Features a direct LCD* display of current ambient temperature and RH. Each Datalogger takes up to 16,000 readings . An internal clock stores the date and time with each reading and non-volatile memory ensures that data will not be lost even if the battery dies or is removed. When monitoring is complete simply return the Datalogger to its docking station, connect the station to your computer using the USB cable included, and start to download and view results on your computer using the provided software. Set includes one Datalogger, docking station with computer cable, free downloadable software, battery and instructions.
NOTES:
LCDs do not work reliably below 20°C or above 51°C.
If you have the Old Model 800054 with RS232 port/cable, you will need to use this software: 800054-RS232 Software.
Dimensions: 3″ × 2″ × ⅞” (76 × 51 × 22 mm)
Weight: 3 oz (85 g)
*Certification Option
N.I.S.T. traceable Certificate of Compliance available at additional cost (Select option above).
| Range | Resolution | Accuracy | |
| Temperature | -40 to 185ºF & -40 to 85ºC | 0.1° | ±0.6ºC (-20 to 50ºC), ±1.2ºC (-40 to 20ºC & 51 to 85ºC) |
| RH | 0 to 100% | 0.1% | ±5% RH |
Dial Hygrometer / Thermometer
The dial hygrometer / thermometer is ideal for home, classroom, lab or industrial use.
Large, clear, 0 to 100% RH scale on 4″ dial is easily read from a distance. Uses a precise synthetic hair hygrometer with an accuracy of ±5%. Plastic face meets food industry requirements. Inner dial shows temperature using a bimetal thermometer, with an accuracy of ±2°F. Wall mounts. N.I.S.T. traceable Certification Report available.
- True dial reading
- 5 year warranty
).
Mason's Hygrometer
Measure Humidity – Mason’s Hygrometer – Red Liquid
One thermometer bulb is kept constantly wet by a siphon reservoir while the other gives a dry temperature reading. Humidity is obtained by comparing the two readings on the enclosed chart. The red liquid masons hygrometer uses a safe and easy to read red liquid in place of the usual mercury. Dual scales of -10/50°C and 10/120°F.
Sling Psychrometer - 20 ~ 120 F
The Whirling Hygrometer or sling psychrometer is an established, well-known method for determining the relative humidity and dew point.
The sling psychrometer is used by paint shops to determine if there is any moisture on steel to prior to painting, as well as, and an economical choice for educators.
Our sling psychrometers allow you to obtain fast and accurate humidity readings anywhere by comparing the reading of the wet and dry bulb thermometers on the enclosed humidity chart. Eliminates the hazard of splattering mercury by using a safe and easy to read red liquid. The thermometers are recessed into a protective plastic mounting. The mounting also contains a water reservoir eliminating the need to constantly re-wet the wick. Comes with a carrying case and plastic humidity chart.
Dimensions: 9⅛” × 2″ × ⅝” (232 × 51 × 16 mm)
Weight: 7.4 oz (210 g)
Sling Psychrometer -5 ~ 50 C
The Whirling Hygrometer or sling psychrometer is an established, well-known method for determining the relative humidity and dew point.
The sling psychrometer is used by paint shops to determine if there is any moisture on steel to prior to painting, as well as, and an economical choice for educators.
Our sling psychrometers allow you to obtain fast and accurate humidity readings anywhere by comparing the reading of the wet and dry bulb thermometers on the enclosed humidity chart. Eliminates the hazard of splattering mercury by using a safe and easy to read red liquid. The thermometers are recessed into a protective plastic mounting. The mounting also contains a water reservoir eliminating the need to constantly re-wet the wick. Comes with a carrying case and plastic humidity chart.
Dimensions: 9⅛” × 2″ × ⅝” (232 × 51 × 16 mm)
Weight: 7.4 oz (210 g)
