Humidity Recorders | McMaster-Carr

	Certification Certification

Calibration Certificate
Traceable to NIST

NIST Certificate of Calibration

	Scale Scale

Celsius

Fahrenheit

	Recording Time Recording Time

24 hrs.

7 days

31 days

	Display Display

	LCD
	LED

	Minimum Relative Humidity Minimum Relative Humidity

10%

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	Maximum Relative Humidity Maximum Relative Humidity

80%

90%

95%

	Maximum Temperature Maximum Temperature

	Width Width

	Height Height

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

	Relative Humidity Accuracy Relative Humidity Accuracy

±4%

±3%

	Battery Size Battery Size

AAA

CR2032

	Depth Depth

1 1/4"

1 5/16"

3 1/8"

	Housing Material Housing Material

Plastic

Aluminum

	Temperature Resolution Temperature Resolution

	Relative Humidity Resolution Relative Humidity Resolution

0.1

	Digit Height Digit Height

5/16"

1/2"

	Minimum Temperature Minimum Temperature

	Chart Recorder Type Chart Recorder Type

Direct Reading

Remote Reading

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	Mounting Location Mounting Location

Wall

Freestanding

	Minimum Dew Point Minimum Dew Point

21 Products

Quick-Export Temperature and Humidity Data Recorders

No cords or software required—these data recorders store readings on an included SD card in Excel format for easy transfer to a PC.

Data recorders with a NIST certificate of calibration include a calibration certificate traceable to NIST that states the recorder has passed a test for accuracy.

						Recording Interval
Display	Digit Ht.	Temp. Range	Temp. Accuracy	Relative Humidity Range	Relative Humidity Accuracy	Min.	Max.	Ht.	Wd.	Dp.	Batteries Included		Each
Temperature and Humidity Data Recorders
LCD	1/2"	32° to 122° F/0° to 50° C	±1.5° F/±0.8° C	10 to 90%	±4%	Once per Five Seconds	Once per 600 Seconds	5 3/16"	3 1/16"	1 5/16"	Yes	000000	0000000
Temperature and Humidity Data Recorders with NIST Certificate
LCD	1/2"	32° to 122° F/0° to 50° C	±1.5° F/±0.8° C	10 to 90%	±4%	Once per Five Seconds	Once per 600 Seconds	5 3/16"	3 1/16"	1 5/16"	Yes	000000	000000

Remote-Reading Temperature, Humidity, and
Dew Point Chart Recorders with High/Low 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. Charts (not included) are required; select a recording time and temperature range from the available chart options.

Recorder

For Chart Dia.	For Recording Time	Temp. Accuracy	Relative Humidity Range	Relative Humidity Accuracy	Dew Point Range	Dew Point Accuracy	AC Voltage	Ht.	Wd.	Dp.	Batteries Included	Fasteners Included		Each
8"	24 hrs., 7 days, 31 days	±1.8° F/±1° C	0 to 95%	±3%	32° to 122° F/0° to 50° C	±3.6° F/±2° C	120	9 3/16"	9 3/16"	3 1/8"	Yes	Yes	00000000	0000000

Replacement Blue Pen

00000000

Each

000000

Charts

Fahrenheit
Chart Dia.	Temp. Range	Choose a Recording Time	Pkg. Qty.		Pkg.
8"	-20° to 120° F	24 hrs., 7 days, 31 days	60	00000000	000000
8"	40° to 110° F	24 hrs., 7 days, 31 days	60	00000000	00000
Celsius
8"	-20° to 50° C	24 hrs., 7 days, 31 days	60	00000000	00000

Charts for Temperature and Humidity Chart Recorders

Fahrenheit

Chart Dia.	Temp. Range, °F	Choose a Recording Time	Pkg. Qty.		Pkg.
8"	-20° to 120°	24 hrs., 7 days, 31 days	60	00000000	000000
8"	40° to 110°	24 hrs., 7 days, 31 days	60	00000000	00000

Celsius

Chart Dia.	Temp. Range, °C	Choose a Recording Time	Pkg. Qty.		Pkg.
8"	-20° to 50°	24 hrs., 7 days, 31 days	60	00000000	000000

Temperature and Humidity Chart Recorders with Calibration Certificate

Track ambient temperature and humidity over time with this recorder that includes a calibration certificate traceable to NIST that states it has passed a test for accuracy. Recorders come with a replaceable sensor, so no probe is needed. Charts (not included) are required; select a recording time and temperature range from the available chart options.

Recorders

For Chart Dia.	For Recording Time	Temp. Accuracy	Relative Humidity Range	Relative Humidity Accuracy	Ht.	Wd.	Dp.	Batteries Included	Fasteners Included		Each
8"	24 hrs., 7 days	±1.8° F/±1° C	0 to 95%	±3%	9 3/16"	9 3/16"	3 1/8"	Yes	Yes	00000000	0000000

Replacement Blue Pen	00000000	Each	000000
Replacement Red Pen	0000000	Each	00000

Charts

Fahrenheit
Chart Dia.	Temp. Range	Recording Time	Pkg. Qty.		Pkg.
8"	-20° to 120° F	24 hrs.	60	000000000	000000
8"	-20° to 120° F	7 days	60	000000000	00000
Celsius
8"	-20° to 50° C	7 days	60	000000000	00000

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

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.

Humidity Points	Accuracy	Container Type	Ht.	Wd.	Specifications Met	Pkg. Qty.		Pkg.
10%, 20%, 30%, 40%, 50%, 60%	±5%	Can	4 3/4"	1 9/16"	MIL-I-8835	200	0000000	000000
30%, 40%, 50%	±5%	Can	3"	2"	MIL-I-8835	125	0000000	00000

Humidity-Indicating Plugs

Plug

40% Spot-Style Indicator

20%, 30%, 40% Pie-Style Indicator

20%, 30%, 40%, 50% Pie-Style Indicator

30%, 40%, 50%. 60% Pie-Style Indicator

20%, 30%, 40%, 50% Spot-Style Indicator

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.