Hand-Held Humidity and Temperature Meters
90% Relative
Humidity Meter
Relative
Humidity Meter
For comprehensive system checks and quality control, these meters measure a wider relative humidity range than pocket meters.
Relative Humidity | Temperature | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Range | Accuracy | Range | Accuracy | Display | Digit Ht. | Ht. | Wd. | Dp. | Probe Type | Includes | Batteries Included | Each | |
10 to 90% | ±3% | -4° to 122° F/-20° to 50° C | ±1.8° F/±1° C | LCD | 3/16", 3/8" | 6 11/16" | 1 7/8" | 1/2" | __ | Pocket Clip | Yes | 0000000 | 0000000 |
0 to 99.9% | ±3% | 14° to 122° F/-10° to 50° C | ±1.8° F/±1° C | LCD | 3/4" | 7 1/2" | 2 1/2" | 1 1/2" | Built In | __ | Yes | 00000000 | 00000 |
Remote-Reading Hand-Held Humidity and Temperature Meters
The probe is attached to a 3-ft. cable for checking humidity, temperature, and dew point in hard-to-reach areas.
Relative Humidity | Temperature | Probe | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Range | Accuracy | Range | Accuracy | Dew Point Range | Lg. | Dia. | Connection | Ht. | Wd. | Dp. | Batteries Included | Each | |
5 to 95% | ±3% | 32° to 120° F/0° to 50° C | ±1.5° F/±0.8° C | -13° to 120° F/-25° to 48° C | 8" | 5/8" | 4-Pin Circular DIN | 7" | 2 11/16" | 1 3/4" | No | 00000000 | 0000000 |
Pocket Humidity and Temperature Meters with Calibration Certificate
To ensure reliable readings on the go, this portable meter comes with a calibration certificate traceable to NIST that states it has passed a test for accuracy.
Relative Humidity | Temperature | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Range | Accuracy | Range | Accuracy | Display | Digit Ht. | Ht. | Wd. | Dp. | Features | Includes | Batteries Included | Each | |
20 to 95% | ±3.5% | 32° to 122° F/0° to 50° C | ±1.8° F/±1° C | LCD | 3/4" | 5" | 7/8" | 5/8" | Min./Max. Memory | Belt Clip | Yes | 00000000 | 0000000 |
Remote-Reading Humidity and Temperature Meters
Scale
Display
Meters measure indoor relative humidity and indoor and outdoor temperatures. Meter with LCD display also measures outdoor relative humidity.
Relative Humidity | Temperature | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Indoor Range | Outdoor Range | Accuracy | Indoor Range | Outdoor Range | Accuracy | Ht. | Wd. | Dp. | Battery Size (No. Required) | Batteries Included | Each | |
With Dial and Scale Display and Wired Probe | ||||||||||||
10 to 80% | __ | ±5% | -45° to 110° F/-45° to 50° C | -45° to 110° F/-45° to 50° C | ±4° F/±2° C | 9 3/4" | 2" | 11/16" | __ | __ | 0000000 | 000000 |
With LCD Display and Wireless Sensor | ||||||||||||
20 to 95% | 20 to 95% | ±5% | 32° to 122° F/0° to 50° C | -40° to 140° F/-40° to 60° C | ±2° F/±1° C | 3 3/8" | 5 1/16" | 1 1/2" | AA (2), AAA (2) | No | 00000000 | 00000 |
Easy-Read Humidity Meters
Meters with accuracy certificate come with a document stating they’ve passed a test for accuracy.
Relative Humidity | ||||||||
---|---|---|---|---|---|---|---|---|
Dial Dia. | Housing Material | Range | Accuracy | Graduation Marks | Mounting Location | Fasteners Included | Each | |
4" | Stainless Steel | 0 to 100% | ±3% | 1% | Wall | No | 000000 | 000000 |
Relative Humidity | Temperature | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Dial Dia. | Housing Material | Range | Accuracy | Graduation Marks | Range | Accuracy | Graduation Marks | Mounting Location | Mounting Hole Dia. (No. of) | Fasteners Included | Each | |
5" | Aluminum | 0 to 100% | ±2.5% | 2% | 10° to 170° F/-12° to 75° C | ±1.8° F/±1° C | 5° F/2° C | Wall | 1/8" (3) | Yes | 0000000 | 0000000 |
5" | Brass | 0 to 100% | ±2.5% | 2% | 10° to 170° F/-8° to 75° C | ±1.8° F/±1° C | 5° F/2° C | Wall | 1/8" (3) | Yes | 0000000 | 000000 |
5 1/4" | Stainless Steel | 0 to 100% | ±2.5% | 2% | 10° to 170° F/-12° to 75° C | ±1.8° F/±1° C | 5° F/2° C | Wall | 1/4" (1) | No | 0000000 | 000000 |
Humidity and Temperature Meters
Relative Humidity | Temperature | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Range | Accuracy | Indoor Range | Accuracy | Ht. | Wd. | Dp. | Digit Ht. | Battery Size | No. of Batteries Required | Batteries Included | Mounting Hole Dia. (No. of) | Fasteners Included | Each | |
10 to 95% | ±5% | -40° to 158° F/-40° to 70° C | ±2° F/±1° C | 2 15/16" | 4 3/4" | 13/16" | 1/2" | AAA | 2 | No | 1/4" (2) | No | 00000000 | 000000 |
25 to 95% | ±5% | 32° to 122° F/0° to 50° C | ±2° F/±1° C | 3 3/4" | 2 5/8" | 5/8" | 5/8" | AAA | 2 | Yes | 3/32" (2) | No | 00000000 | 000000 |
High-Accuracy Humidity and Temperature Meters with Calibration Certificate
Determine relative humidity within ±4% accuracy and temperature within ±1.8° F accuracy. This meter comes with a calibration certificate traceable to NIST that states it has passed a test for accuracy. It also displays dew point or frost point.
Probe | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Relative Humidity Range | Indoor Temp. Range | Dew Point Range | Cable Lg. | Lg. | Dia. | Ht. | Wd. | Dp. | Batteries Included | Each | |
10 to 99% | 14° to 140° F/-10° to 60° C | 14 to 140° F/-10° to 60° C | 18" | 1 11/16" | 9/16" | 4 1/4" | 3 7/8" | 3/4" | Yes | 0000000 | 0000000 |
Through-Wall Humidity and Temperature Meters
Monitor relative humidity, temperature, and dew point inside sealed containers. These meters are rated IP67, so they won't expose contents to dust and water. The housing is aluminum, which is lightweight and resists corrosion.
For technical drawings and 3-D models, click on a part number.
Relative Humidity | Temperature | Dew Point | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Range | Accuracy | Indoor Range | Accuracy | Range | Accuracy | Dp. | Dia. | For Hole Dia. | For Max. Wall Thick. | Batteries Included | Fasteners Included | Environmental Rating | Each | |
5 to 80% | ±3% | -4° to 140° F/-20° to 60° C | ±1° F/±0.5° C | -22° to 68° F/-30° to 20° C | ±3.6° F/±2° C | 1 1/4" | 2 1/2" | 1 27/64" | 11/32" | Yes | Yes | IP67 | 0000000 | 0000000 |
Wireless Humidity Transmitters
Use smartphones and tablets to monitor humidity and temperature within your system or facility. Connect these battery-powered transmitters to your smart device via Bluetooth, and receive data to ensure workplace conditions are suitable for processes, inventory, or personnel. Good for preventative maintenance and route-based monitoring, these transmitters let you choose how frequently you receive the data, and they’ll notify your device when humidity and temperature levels go outside of your thresholds. Download the app, set your parameters, and collect data from up to 300 ft. away. Rated IP65, they are protected against dust and washdowns.
Turn your transmitter into a portable monitoring system by attaching a quick coupling (not included). This allows fast, temporary connections for on-the-go measurements in different locations.
For technical drawings and 3-D models, click on a part number.
Relative Humidity | Temperature | Connection Type | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Range | Accuracy | Range | Accuracy | Response Time, sec. | Pipe Size | Thread Type | Gender | Wireless Range, ft. | Ht. | Wd. | Batteries Included | Environmental Rating | Manufacturer (Series) | Each | |
Bluetooth Connection | |||||||||||||||
0 to 100% | ±5% | 14° to 185° F | ±1° F | 10 | 1/4 | NPT | Male | 300 | 2 11/16" | 1 7/8" | Yes | IP65 | Parker (Sensonode Blue) | 0000000 | 0000000 |
Portable Psychrometers
Also known as sling psychrometers, these calculate relative humidity in the field based on continuous temperature measurements from a wet-bulb and a dry-bulb thermometer. They consist of two mercury-free fluid-filled thermometers, a wick, a glass water bulb, and a handle. These psychrometers have a built-in slide rule for calculating humidity without a calculation table.
Temperature | Fluid | |||||||
---|---|---|---|---|---|---|---|---|
Scale Ht. | Relative Humidity Range | Range | Accuracy | Material | Color | Housing Material | Each | |
1 1/4" | 10 to 100% | 20° to 120° F | ±1° F | Mineral Spirits | Red | Plastic | 0000000 | 000000 |
Psychrometers
Obtain continuous temperature measurements from a wet-bulb and a dry-bulb thermometer to determine relative humidity. This wall-mount psychrometer consists of two mercury-free fluid-filled thermometers, a wick, a glass water bulb, and a relative humidity calculation table.
Humidity-Indicating Cards
Check humidity levels of moisture-sensitive inventory and equipment at a glance. To detect moisture exposure when packaging, shipping, and storing electronics and chemicals, these cards have dots that change color as humidity levels change. Store electronics in a moisture barrier bag with one of these cards and a desiccant bag (bags not included). To revert these cards to their original color, place them in a dry container for 24 hours or bake at 180° F for 3 hours. Cards will not revert to their original color once they reach 60% or greater humidity. They meet industry guidelines for packaging moisture-sensitive devices.
Cobalt-free cards have a lower impact on the environment than cards that are not cobalt-free.
Humidity Points | Accuracy | Container Type | Ht. | Wd. | Features | Specifications Met | Pkg. Qty. | Pkg. | |
5%, 10%, 15% | ±5% | Can | 3" | 2" | __ | MIL-I-8835 | 125 | 0000000 | 000000 |
5%, 10%, 15% | ±5% | Can | 3" | 2" | Cobalt-Free | MIL-I-8835 | 125 | 0000000 | 00000 |
5%, 10%, 60% | ±5% | Can | 3" | 2" | __ | MIL-I-8835 | 125 | 0000000 | 00000 |
5%, 10%, 60% | ±5% | Can | 3" | 2" | Cobalt-Free | MIL-I-8835 | 125 | 0000000 | 00000 |
10%, 20%, 30%, 40% | ±5% | Can | 2" | 3" | __ | MIL-I-8835 | 100 | 0000000 | 00000 |
10%, 20%, 30%, 40%, 50%, 60% | ±5% | Can | 4 3/4" | 1 9/16" | __ | MIL-I-8835 | 200 | 0000000 | 00000 |
10%, 20%, 30%, 40%, 50%, 60% | ±5% | Can | 4 3/4" | 1 9/16" | Cobalt-Free | MIL-I-8835 | 200 | 0000000 | 00000 |
30%, 40%, 50% | ±5% | Can | 3" | 2" | __ | MIL-I-8835 | 125 | 0000000 | 00000 |
30%, 40%, 50% | ±5% | Can | 3" | 2" | Cobalt-Free | MIL-I-8835 | 125 | 0000000 | 00000 |
Humidity-Indicating Plugs
Monitor humidity in sealed containers without opening them, protecting the inside from contamination. These plugs are often used on plastic bags, storage containers, and electrical housings. Consisting of a mounting nut and two gaskets for a tight seal, these plugs install through a hole in a flexible barrier. Remove one gasket and reverse the nut to install plugs in a rigid container. Watch the indicator disc through the nut’s viewing window—it will change color as humidity rises and falls. Made of anodized aluminum, these plugs resist corrosion and are lightweight. They meet military and SAE standards for humidity indicators.
For technical drawings and 3-D models, click on a part number.
Thread | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Humidity Points | Accuracy | Height | Width | For Hole Diameter | Type | Size | Pipe Size | Indicator Use | Specifications Met | Each | |
Anodized Aluminum | |||||||||||
Pie-Style Indicator | |||||||||||
20%, 30%, 40% | ±5% | 5/8" | 1 3/8" | 1.05" | NPSM | __ | 3/4 | Reversible | MIL-I-8835; SAE AS26860 Type 2 | 0000000 | 000000 |
20%, 30%, 40%, 50% | ±5% | 5/8" | 1 3/8" | 1.05" | NPSM | __ | 3/4 | Reversible | MIL-I-8835; SAE AS26860 Type 2 | 0000000 | 00000 |
30%, 40%, 50%, 60% | ±5% | 5/8" | 1 3/8" | 1.05" | NPSM | __ | 3/4 | Reversible | MIL-I-8835; SAE AS26860 Type 2 | 0000000 | 00000 |
Spot-Style Indicator | |||||||||||
20%, 30%, 40%, 50% | ±5% | 5/8" | 1 3/8" | 1.05" | NPSM | __ | 3/4 | Reversible | MIL-I-8835; SAE AS26860 Type 2 | 0000000 | 00000 |
20%, 30%, 40%, 50% | ±5% | 5/8" | 1 7/8" | 1.45" | UNEF | 1 7/16"-18 | __ | Reversible | MIL-I-8835; SAE AS26860 Type 2 | 0000000 | 00000 |
40% | ±5% | 5/8" | 1 3/8" | 1.05" | NPSM | __ | 3/4 | Reversible | MIL-I-8835; SAE AS26860 Type 2 | 0000000 | 00000 |
Humidity and Temperature Transmitters
These sensors measure temperature and humidity, then send that information to your PLC or controller to regulate heating and cooling equipment, alarms, and data recorders. Choose a sensor that works with your digital IO-Link or analog 4-20 mA system. Clip it to a DIN rail or mount it to a surface, and use the micro M12 plug to connect the sensor to your controller. These sensors are often installed in enclosures.
Sensors meet American, Canadian, and European safety standards. Rated IP20, they’re designed so fingers can’t reach the electrical parts inside and get shocked. They also meet UL 94 V-0, so if they catch fire, they’ll self-extinguish within 10 seconds and won’t spread the fire by dripping.
Temperature | Relative Humidity | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Range | Tolerance | Range | Tolerance | Communication Protocol | Output Current | Voltage | Ht. | Wd. | Dp. | Plug Type | For DIN Rail Height, mm | Mounting Fasteners Included | Environmental Rating | Specifications Met | Each | |
-40° to 140° F -40° to 60° C | ±1.8° F ±1° C | 0% to 100% | ±4% | __ | 4-20mA | 24V DC | 5 1/2" | 1 1/2" | 1 1/2" | Micro M12 | 35 | No | IP20 | CE Marked; UL 94 V-0; VDE Certified; C-UL Recognized Component; UL Recognized Component | 0000000 | 0000000 |
-40° to 175° F -40° to 80° C | ±0.54° F ±0.3° C | 0% to 100% | ±3% | IO Link | __ | 24V DC | 5 1/2" | 1 1/2" | 1 1/2" | Micro M12 | 35 | No | IP20 | CE Marked; UL 94 V-0; VDE Certified; C-UL Recognized Component; UL Recognized Component | 0000000 | 000000 |
Environmental-Monitoring Modules for Development Boards
Keep equipment running and working conditions safe—these modules add air quality tracker capabilities to your development board. Each module gathers data on air conditions, ranging from temperature and humidity to carbon dioxide or volatile organic compound (VOC) levels. These modules easily connect to boards and other components with Qwiic cords or by soldering.
Modules with a temperature, humidity, and air quality sensor help you make sure the air is healthy in your facility. They directly measure the amount of carbon dioxide in the air.
Modules with a temperature, humidity, and barometer sensor are often used as part of an automated system that runs equipment based on the weather. For instance, you can use them in a system that will turn on a humidifier if humidity dips below a certain level.
Modules with a temperature, humidity, air quality, and barometer sensor give you the most comprehensive picture of air conditions in your facility. They directly measure the amount of VOCs and give you an estimated measurement of carbon dioxide based on VOC levels. They monitor air quality using Germany’s Air Quality Index (AQI).
Measures | Temp. Range, °C | Relative Humidity | Carbon Dioxide Concentration | Input Voltage | I2C Address | No. of Qwiic Connections | Lg. | Wd. | Each | |
Temperature, Relative Humidity, Carbon Dioxide | -10° to 60° | 0%-100% | 0-40,000 ppm | 2.4-5.5V DC | 0x62 | 2 | 1" | 1" | 0000000 | 000000 |
Measures | Temp. Range, °C | Relative Humidity | Barometric Pressure | Input Voltage | I2C Address | No. of Qwiic Connections | Lg. | Wd. | Each | |
Temperature, Relative Humidity, Barometric Pressure | -40° to 85° | 0%-100% | 8.9-32.5 in. of Hg | 1.71-3.6V DC | 0x76, 0x77 | 2 | 1" | 1" | 0000000 | 000000 |
Measures | Temp. Range, °C | Relative Humidity | Equivalent Carbon Dioxide Concentration | Total Volatile Organic Compound | Barometric Pressure | Input Voltage | I2C Address | No. of Qwiic Connections | Lg. | Wd. | Each | |
Temperature, Relative Humidity, Equivalent Carbon Dioxide, Total Volatile Organic Compound Concentration, Air Quality Index, Barometric Pressure | 0° to 65° | 20%-80% | 400-650,000 ppm | 0-65,000 ppb | 8.9-32.5 in. of Hg | 1.2-3.6V DC | 0x52, 0x53, 0x76, 0x77 | 2 | 1" | 1" | 0000000 | 000000 |
Moisture Detectors
Check the moisture content of wood and other building materials. Detector uses two noninsulated electrode pins that are mounted directly to the meter. For deeper penetration, two insulated electrode pins attach to the meter with a 3-ft. cord.
This unit has three scales. The wood scale measures moisture from 6% to 60% in lumber, studs, and flooring. The drywall scale measures moisture from 0.1% to 6%. A comparative reference scale reads from 0 to 100 and is used in nonwood materials such as concrete, insulation, and roofing. Detector accumulates up to 100 readings and gives you an average.
Moisture Measuring Range | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Wood Scale | Drywall Scale | Comparative Scale | Electrode Pin Penetration Dp. | Lg. | Wd. | Ht. | Batteries Included | Container Type | Includes | Each | |
6%-60% | 0.1%-6% | 0-100 | 5/16" | 8 5/8" | 2 7/8" | 1 9/16" | Yes | Case | 3-ft. Cord, Two Insulated Electrode Pins for 3 1/4" Penetration Depth, Two Replacement Electrode Pins for 5/16" Penetration Depth | 0000000 | 0000000 |
Replacement Insulated Pin | 0000000 | Pkg. | 000000 |