Dew Point Meters | McMaster-Carr

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Minimum Dew Point

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Temperature Features

Audible High/Low Alarm

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Relative Humidity Accuracy

Mounting Location

Power Source

Relative Humidity

Performance

Maximum Temperature

For Use With

Temperature Resolution

0.1° F

0.1° C

1° C

DFARS Specialty Metals

Exempt

Relative Humidity Resolution

0.1

Recording Time

24 hr.

7 day

Export Control Classification Number (ECCN)

Battery Size

Digit Height

Minimum Temperature

RoHS

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

REACH

Maximum Pressure

Mount Type

31 Products

Remote-Reading High-Accuracy Temperature and Humidity Meters with Calibration Certificate

Image of Product. Front orientation. Temperature and Humidity Meters. Remote-Reading High-Accuracy Temperature and Humidity 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.

	RH		Temp.				Probe
	Range	Accuracy	Indoor Range	Accuracy	Dew Point Range	Cable Lg.	Lg.	Dia.	Ht.	Wd.	Dp.	Battery Size (No. Req.)	Batteries Included		Each
With LCD Display



		10% to 99%	±4%	14° F to 140° F/-10° C to 60° C	±1.8° F	14° F to 140° F/-10° C to 60° C	18"	1 11/16"	9/16"	4 1/4"	3 7/8"	3/4"	AAA (2)	Yes	6455T21	0000000

Handheld Temperature and Humidity Meters

10% to

90%

Relative

Humidity

Range

For comprehensive system checks and quality control, these meters measure a wider relative humidity range than pocket meters.

RH		Temp.
Range	Accuracy	Range	Accuracy	Ht.	Wd.	Dp.	Digit Ht.	Display Type	Housing Material	Temp. Features	Includes	Battery Size (No. Req.)	Batteries Included		Each
10% to 90%	±3%	-4° F to 122° F/-20° C to 50° C	±1.8° F/±1° C	6 11/16"	1 7/8"	1/2"	3/16", 3/8"	LCD	Plastic	Data Hold Function, Min./Max. Memory	Pocket Clip	AAA (2)	Yes	3823K31	0000000

Remote-Reading Temperature, Relative Humidity, and Dew Point Paper-Chart Data Recorders with Audio/Visual Alarm

Image of Product. Front orientation. Data Recorders. Remote-Reading Temperature, Relative Humidity, and Dew Point Paper-Chart Data Recorders with Audio/Visual Alarm.

Remotely record temperature, humidity, and dew point up to 10 feet from the display and set the alarm to sound and flash the display if temperature readings rise above or fall below a set range. This recorder has a remote probe on a 10-ft. cable and a display that can be set to show current temperature, minimum/maximum temperature, or relative humidity and calculated dew point.

			RH		Dew Point
For Chart Dia.	For Recording Time	Temp. Accuracy	Range	Accuracy	Range	Accuracy	Voltage, V AC	Ht.	Wd.	Dp.	Batteries Included	Fasteners Included		Each
8"	24 hr., 7 day	±1.8° F/±1° C	0% to 95%	±2%	32° F to 120° F/0° C to 50° C	±3.6° F/±2° C	120	10 1/8"	9 3/8"	2 3/4"	Yes	No	38755K45	0000000

Accessories and Replacements for Data Recorders

Data Recorder Charts

Data Recorder charts (not included) are required; select a recording time and temperature range from the available chart options.

	Temp. Range	Choose a Recording Time	Pkg. Qty.		Pkg.
Fahrenheit Scale



	8"	-20° F to 120° F	24 hr. , 7 day	60	38755K15	000000


	8"	40° F to 110° F	24 hr. , 7 day	60	38755K16	00000


	Celsius Scale



			8"	-20° C to 50° C	24 hr. , 7 day	60	38755K17	00000

Pen Color		Each
Blue	39815K61	000000

Through-Wall-Mount Temperature and Humidity 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.

RH		Temp.		Dew Point
Range	Accuracy	Indoor Range, ° C	Accuracy	Range, ° C	Accuracy	Dp.	Dia.	For Hole Dia.	For Max. Wall Thk.	Batteries Included	Fasteners Included	Enclosure Rating		Each
5% to 80%	±3%	-20 to 60	±0.5° C	-30 to 20	±2° C	1 1/4"	2 1/2"	1 27/64"	11/32"	Yes	Yes	IP67	6160N11	0000000

Wireless Weather Stations

Monitor nine different weather conditions up to 1,000 feet away. The outdoor weather sensor measures outdoor temperature, humidity, wind speed and direction, rainfall rate, total rainfall, barometric pressure, heat index, wind chill, and dew point. It wirelessly transmits readings to the console by radio signal. Console has built-in sensors to measure indoor temperature and humidity. Console can be placed on a desk or mounted to a wall.

Cannot Be Sold To—They cannot be sold to the listed areas due to product registration requirements.

	Wind Speed		Wind Direction								Electrical
Max. Transmission Distance, ft.	Range, mph	Accuracy	Range	Accuracy	Mounting Location	Console Housing Material	Sensor Housing Material	Sensor Power	Voltage Range, V AC	Cord Lg., ft.	No. of Blades	Connection	Weather Features	Batteries Included	Cannot Be Sold To		Each
1,000	0 to 200	±5%	1° to 360°	±3°	Pipe, Wall	Plastic	Plastic	Solar	100 to 240	10	2	Straight Blade	Battery Backup	Yes	Outside United States, Canada, and Mexico	3011K39	0000000

Handheld Weather Meters

Take field measurements of temperature, dew point, heat index, wind chill, wind speed, and relative humidity.

Wind Speed Range, mph	Display Type	Digit Ht.	Resolution	Ht.	Wd.	Dp.	Housing Material	Includes	Batteries Included		Each
1.3 to 90	LCD	3/8"	0.1	4 7/8"	1 7/8"	1 1/8"	Plastic	Carrying Case, Lanyard	Yes	6273K6	0000000

Heat Stress Monitors


	Data Logging Capabilities	Adapters

Measure temperature, humidity, and radiant heat in your work area to keep your team safe from heat-related hazards. These monitors help you avoid dangerous conditions and comply with OSHA standards for a safe work environment. They use a variety of measurements from your surroundings to calculate the heat stress index and the wet bulb globe temperature (WBGT), which tell you how hot it feels. Set a maximum wet bulb globe temperature, and an alarm will go off when heat reaches the safety limit.

These monitors have two sensors. One measures temperature, humidity, dew point, and wet globe temperature. The other measures black globe temperature, which is the effect of direct solar radiation on an exposed surface. Carry monitors with you to measure different areas, or mount to your tripod to measure conditions over time.

Calibration Certificate Traceable to NIST—Monitors that come with a calibration certificate traceable to NIST have passed a test for accuracy.

Cannot Be Sold to Canada—Import regulations restrict sales to Canada.

Adapters—Power these monitors with the included batteries, or add a power adapter to plug them in.

	Monitors																	Adapters
	Air Temp.		Black Globe Temp.		Wet Bulb Globe Temp.		Barometric Pressure		Relative Humidity		Mounting
	Range, ° F	Accuracy	Range, ° F	Accuracy	Range, ° F	Accuracy	Range, in. Hg	Accuracy	Range	Accuracy	Fasteners Included	No. of	Hole Thread Size	Data Connection	Cannot Be Sold To		Each	Input Voltage, V AC	Output Voltage, V DC	Current, amp	Lg., ft.		Each
Heat Stress Monitors







				LCD Display Monitors

				32 to 122	±1.1° F	32 to 176	±1.8° F	59 to 132	±3.6° F	8.9 to 32.5	±0.044 in. Hg	0% to 100%	±5%	No	1	1/4"-20	—	Canada	6999N11	0000000	100 to 240	9	0.5	6	6999N14	000000




						LCD Display Monitors with NIST Certificate

						32 to 122	±1.1° F	32 to 176	±1.8° F	59 to 132	±3.6° F	8.9 to 32.5	±0.044 in. Hg	0% to 100%	±5%	No	1	1/4"-20	—	Canada	6999N17	000000	100 to 240	9	0.5	6	6999N14	00000


						Data Logging Heat Stress Monitors







										LCD Display Monitors

										32 to 122	±1.5° F	32 to 176	±1.1° F	32 to 132	±3.6° F	—	—	5% to 95%	±3%	No	1	1/4"-20	Standard SD Card	Canada	6999N12	000000	120	9	0.8	4	6999N15	00000




												LCD Display Monitors with NIST Certificate

												32 to 122	±1.5° F	32 to 176	±1.1° F	32 to 132	±3.6° F	—	—	5% to 95%	±3%	No	1	1/4"-20	Standard SD Card	Canada	6999N18	000000	120	9	0.8	4	6999N15	00000

Accessories for Heat Stress Monitors

Humidity Calibrators

To maintain their accuracy, monitors should be calibrated once a year. You can calibrate the monitor yourself using humidity calibrators. These calibrators contain a known humidity, so you can adjust your monitor until it reads the humidity correctly.

RH	RH Accuracy		Each
33%, 75%	±1%	6999N13	0000000

			Inside
5 3/4"	13"	12"	5 1/2"	12"	9 1/2"	4 1/2	Black	Plastic	Padlockable	Cubed	6999N16	000000

Memory Card Size	SD Card Cap.	Memory Size, GB	Includes		Each
Standard SD Card, microSD Card	SDHC	16	Adapter	6999N19	000000

Air Filter Monitors for Supplied-Air Respirators for Plant Air Lines

Track the quality of incoming air as it travels from your air line to your respirator. These monitors display air-quality data, including carbon monoxide and water vapor levels, and sound an alarm if the air is unsafe to breathe. They also filter the air three times before it reaches you to remove oil, water, and solid particles.

Monitors with Low-Battery Alarm


Closed	Open

Respirator Filter Monitor Calibration Kits—Calibration kits (sold separately) come with everything you need to test the accuracy of the filter monitor, including a regulator, tubing, and fittings. The components are packed in a carrying case. Air filter monitors should be calibrated monthly to ensure they’re working properly.

	Respirator Filter Monitors																	Respirator Filter Monitor Calibration Kits		Replacement Filters
								Overall
	For Use With	Inlet Coupling Size	Outlet Coupling Size	Max. Flow Rate @ Pressure	Max. Pressure, psi	Pressure Regulation Range, psi	Regulating Accuracy	Wd.	Ht.	Max. Temp., ° F	Battery Type	Batteries Included	Battery Size	No. of Batteries Req.	Cord Lg., ft.		Each		Each		Each
Plastic Housing







				Quick-Disconnect Male Inlet × Quick-Disconnect Female Outlet

				Solid Particles, Oil, Water	1/2	1/4	15 ft³/min @ 100 psi	150	0 to 160	±1 psi	19"	13"	120	Disposable	No	AA	8	10	6793N17	000000000	6793N13	0000000	6793N12	0000000

Monitors with Data Logging Capabilities and Low-Battery Alarm


Closed	Open

Monitors with data-logging capabilities record air-quality data and calibration results onto a removable USB drive. Download your data from the USB for compliance reports and recordkeeping. They have a large color screen to easily view the quality and status of air as it flows through the filter. When it is time to calibrate the filter monitor, the screen gives clear, step-by-step instructions.

	Respirator Filter Monitors																Respirator Filter Monitor Calibration Kits		Replacement Filters
								Overall
	For Use With	Inlet Coupling Size	Outlet Coupling Size	Max. Flow Rate @ Pressure	Max. Pressure, psi	Pressure Regulation Range, psi	Regulating Accuracy	Wd.	Ht.	Max. Temp., ° F	Battery Type	Batteries Included	No. of Batteries Req.	Cord Lg., ft.		Each		Each		Each
Plastic Housing







				Quick-Disconnect Male Inlet × Quick-Disconnect Female Outlet

				Solid Particles, Oil, Water	1/4	1/4	15 ft³/min @ 100 psi	150	0 to 160	±1 psi	18 1/2"	13"	100	Rechargeable	Yes	1	7	6793N14	000000000	6793N15	0000000	6793N16	0000000

			Inside
Ht.	Wd.	Dp.	Ht.	Wd.	Dp.	Wt., lb.	Color	Material	Lock Type	Foam Type		Each
5 3/4"	13"	12"	5 1/2"	12"	9 1/2"	4 1/2	Black	Plastic	Padlockable	Cubed	6999N16	000000