Detector Signal Type Detector Signal Type |
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Environment Environment |
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For Use With For Use With |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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Specifications Met Specifications Met |
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Measures Measures |
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Connection Location Connection Location |
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Bottom | Center Back | Lower Back |
RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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Environmental Rating Environmental Rating |
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Protection Type Protection Type |
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Case Material Case Material |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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About Pressure Gauges
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About Pipe Size
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About Flowmeters and Totalizers
Flowmeters measure the rate of flow for a liquid or a gas. Totalizers measure the cumulative flow volume. Flowmeter/totalizers display both the flow rate and the cumulative flow volume.
More
Oxygen Detectors

When your work area has too much or too little oxygen, these detectors alert you with an audible alarm, warning light, and vibrating alarm. You can adjust the high and low alarm trigger points to suit your environment.
A calibration check must be performed on the detector before each use to verify that it is working properly. The check can be performed with the press of a button.
The detector with a nonreplaceable battery should be thrown away at the end of its two-year lifespan.
Measuring Range, % Vol. | Volume | Ht. | Wd. | Dp. | Temperature Range, °F | Batteries Included | Battery Chemistry | Environmental Rating | Each | |
Detectors with Nonreplaceable Battery | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
0-25 | 95 dBA @ 30 cm. | 3 1/2" | 2" | 1" | -4° to 122° | Yes | Lithium | NEC Class I Divisions 1, 2 Groups A, B, C, D NEC Class II Divisions 1, 2 Group G NEC Zone 0 Groups IIC, IIB, IIA IEC Zone 1 Groups IIC, IIB, IIA IP67 | 00000000 | 0000000 |
Detectors with Replaceable Battery | ||||||||||
0-25 | 95 dBA @ 30 cm. | 3 1/2" | 2" | 1" | -4° to 122° | Yes | Lithium | NEC Class I Divisions 1, 2 Groups A, B, C, D NEC Class II Divisions 1, 2 Group G NEC Zone 0 Groups IIC, IIB, IIA IEC Zone 0 Groups IIC, IIB, IIA | 00000000 | 000000 |
Batteries (Pkg. of 1) | 0000000 | Pkg. | 000000 |
Portable Multi-Gas Detectors

When this detector senses high levels of combustible and toxic gases, it alerts you with an audible alarm, warning light, and vibrating alarm. You can adjust the alarm trigger points to suit your environment. There is also a motion sensor that sounds an alarm if the user becomes disabled.
A calibration check must be performed on the detector before each use to verify that it is working properly. The check requires a regulator and cylinder (sold separately).
Note: LEL is lower explosive limit.
Detects (Measuring Range) | Volume | Temperature Range, °F | Batteries Included | Environmental Rating | Each | |
Acetone, Butane, Hydrogen, Methane, Pentane, Propane, Toluene (0-100% LEL); Oxygen (0-30% Vol.); Carbon Monoxide (0-1,999 ppm); Hydrogen Sulfide (0-200 ppm) | 95 dBA @ 30 cm. | -40° to 140° | Yes | NEC Class I Divisions 1, 2 Groups A, B, C, D NEC Class II Divisions 1, 2 Groups E, F, G NEC Class III Divisions 1, 2 NEC Zone 0 Groups IIC, IIB, IIA IP68 | 00000000 | 0000000 |
Portable Multi-Gas Detectors with Probe

Use the probe to test the air in a hazardous area before entering. Great for confined spaces. This detector alerts you with an audible alarm, warning light, and vibrating alarm in the presence of combustible and toxic gases. You can adjust the alarm trigger points to suit your environment. There is also a motion sensor that sounds an alarm if the user becomes disabled.
A calibration check must be performed on the detector before each use to verify that it is working properly. The check requires a regulator and cylinder (sold separately).
Note: LEL is lower explosive limit.
Detects (Measuring Range) | Volume | Temperature Range, °F | Batteries Included | Includes | Tube Lg., ft. | Environmental Rating | Each | |
Acetone, Butane, Hydrogen, Methane, Pentane, Propane, Toluene (0-100% LEL); Oxygen (0-30% Vol.); Carbon Monoxide (0-1,999 ppm); Hydrogen Sulfide (0-200 ppm) | 95 dBA @ 30 cm. | -40° to 140° | Yes | Sampling Probe, Tubing Assembly, Rechargeable Lithium Ion Battery for Probe | 25 | NEC Class I Divisions 1, 2 Groups A, B, C, D NEC Class II Divisions 1, 2 Groups E, F, G NEC Class III Divisions 1, 2 NEC Zone 0 Groups IIC, IIB, IIA IP68 | 00000000 | 000000000 |
Combustion Efficiency Meters
Also known as a combustion analyzer, this meter measures boiler and furnace combustion efficiency. It automatically calibrates to normal atmospheric oxygen.

Measurement Range | Calculated Range | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
For Use On | Ambient Temp. | Flue Gas Temp. | Flue Gas Oxygen | Carbon Monoxide, ppm | Combustion Efficiency | Carbon Dioxide | Air Free Carbon Monoxide, ppm | Excess Air | Accuracy | Batteries Included | Each | |
Kerosene, Natural Gas, Oil, Propane | 25° to 110° F | -4° to 1200° F | 0-20.9% | 0-2,000 | 0.1%-100% | 0-15% | 0-9,999 | 0-250% | ±0.3% of Oxygen Content | Yes | 0000000 | 0000000 |
Quick-Spot Vacuum and Pressure Gas Leak Detectors

The aerosol can dispenses a foam that bubbles over pressure leaks and forms a crater over vacuum leaks, providing quick and reliable leak detection, while saving time and energy costs. This noncorrosive, nonflammable detector finds leaks in pipes, tubes, fittings, tanks, and cylinders. It washes off with water.
Temp. Range , ° F | Container Net Weight, oz. | Each | |
35° to 170° | 14 | 0000000 | 000000 |
Ultrasonic Gas Leak Detectors
This detector converts ultrasonic waves to an audible sound so you can find leaks. Unlike typical leak detectors, this unit doesn’t rely only on the presence of a gas to work, making it suitable for a wider range of applications. In addition to gas leaks, it identifies ultrasonic sound caused by failing solenoids, valves, and bearings.
For systems under 10 psi, use the optional ultrasonic sound generator.
High-Visibility Quick-Spot Compressed Gas Leak Detectors
These detectors are fluorescent green. Bubbling action at the source provides quick and reliable leak detection, saving time and energy costs. These noncorrosive, nonflammable detectors find leaks in pipes, tubes, fittings, tanks, and cylinders. They adhere to vertical surfaces. All wash off with water.
Use a UV flashlight for enhanced viewing.
Quick-Spot Compressed Gas Leak Detectors
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Bubbling action at the source provides quick and reliable leak detection, saving time and energy costs. These noncorrosive, nonflammable detectors find leaks in pipes, tubes, fittings, tanks, and cylinders. They wash off with water.
Container | ||||||
---|---|---|---|---|---|---|
Oxygen Compatible | Temp. Range, ° F | Size | Type | Specifications Met | Each | |
No | -35° to 200° | 1 gal. | Jug | MIL-PRF-25567 | 00000000 | 000000 |
No | 35° to 160° | 1 gal. | Jug | __ | 0000000 | 00000 |
No | 35° to 160° | 8 fl. oz. | Bottle with Applicator | __ | 0000000 | 0000 |
No | 35° to 160° | 8 fl. oz. | Squeeze Bottle | __ | 0000000 | 0000 |
Yes | -65° to 200° | 1 gal. | Jug | MIL-PRF-25567 | 00000000 | 00000 |
Yes | -65° to 200° | 8 fl. oz. | Squeeze Bottle | MIL-PRF-25567 | 00000000 | 0000 |
Yes | 30° to 200° | 1 gal. | Jug | MIL-PRF-25567 | 00000000 | 00000 |
Yes | 30° to 200° | 8 fl. oz. | Squeeze Bottle | MIL-PRF-25567 | 00000000 | 0000 |
Yes | 35° to 160° | 4 fl. oz. | Squeeze Bottle | MIL-PRF-25567 | 0000000 | 0000 |
Water-Resistant Dissolved Oxygen Meters

Check the oxygen levels of water and other clean liquids in harsh field conditions. This meter has a housing that meets IP57 for good resistance to dust and protection from temporary submersion. It has automatic temperature compensation that standardizes readings at 77° F to prevent inaccurate results in fluctuating temperatures. Use distilled water and the calibration button to maintain accuracy.
Remote-Reading pH Meters with PC Output


Transmit pH readings to a PC for analysis. These meters have a sensor on a 6-ft. cable for taking remote readings of water and other clean liquids. They have automatic temperature compensation that standardizes readings at 77° F to prevent inaccurate readings in fluctuating temperatures. Use the included calibration solution and calibration button to maintain accuracy.
Remote-Reading Multifunction Chemistry Meters with PC Output
Test temperature, chemical concentration, contamination, and salt levels in liquid from up to 6 ft. away, then send the results to your computer for analysis. These meters include a USB cable that transfers up to 1,000 readings. Often used to test water quality, they work on both clean and dirty liquids—from tap water to wastewater. Conductivity tests measure the concentration of salts, nutrients, chemicals, and other substances. Total dissolved solids (TDS) tests report contaminant levels. Salinity tests determine the salt levels in liquid. The sensor is made of stainless steel, so it’s durable and resists breaking. IP67 rated, these meters are dust tight and withstand temporary submersion.
To prevent inaccurate results from changing temperatures, these meters automatically standardize temperature readings at 77° F. Temperature readings appear on screen with other measurements, so you won’t have to scroll through multiple screens. A data hold function freezes the current reading on the display.
To maintain accuracy of the meters, they come with calibration solutions and have a calibration button.
These meters cannot be sold to Canada due to import regulations.

Conductivity | Resistivity | Salinity | Total Dissolved Solids (TDS) | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Range | Accuracy | Range | Accuracy | Range | Accuracy | Temp. Accuracy | Range | Accuracy | Automatic Temperature Compensation (ATC) Range, °F | Batteries Included | Cannot Be Sold To | Each | |
For Use With Clean and Dirty Liquids | |||||||||||||
0 to 200 mS | ±1.5% | 0 to 20 megohms | ±1.5% | 0 to 100 ppt | ±1.5% | ±0.9° F | 0 to 100 ppt | ±0.1% | 32° to 212° | Yes | Canada | 00000000 | 0000000 |

For Testing | Each | |
Conductivity, Resistivity, Salinity, Temperature, Total Dissolved Solids (TDS) | 00000000 | 0000000 |
Remote-Reading Multifunction Chemistry Meters
Take multiple water-chemistry and temperature measurements in hard-to-reach places from up to 3 feet away. Often used in tap water and wastewater, these meters work in both clean and dirty liquids. Automatic temperature compensation standardizes readings to 77° F to prevent inaccurate results in changing temperatures. The data hold function freezes the current reading on the display. For easy viewing, temperature and chemistry measurements appear on the same screen. These meters are IP57 rated, so they resist dust and withstand temporary submersion. They cannot be sold to Canada due to import regulations.
To maintain their accuracy, all have a calibration button and some also come with calibration solutions.
Conductivity, salinity, temperature, and total dissolved solids (TDS) meters take four measurements at once. Conductivity measures the concentration of salts, nutrients, chemicals, and other substances. Salinity measures the amount of dissolved salts. TDS determines the contaminant levels. The stainless steel sensor is durable and resists breaking.

Conductivity | Salinity | Total Dissolved Solids (TDS) | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Range | Accuracy | Range | Accuracy | Temp. Accuracy | Range | Accuracy | Automatic Temperature Compensation (ATC) Range, °F | Batteries Included | Cannot Be Sold To | Each | |
For Use With Clean and Dirty Liquids | |||||||||||
0 to 19.99 mS 2 to 19.99 mS 20 to 199.9 mS 20 to 199.9 µS 200 to 1,999 µS | ±1% ±1% ±1% ±1% ±1% | 0 to 100 ppt | ±1% | ±0.9° F | 0 to 0.1 ppm | ±1% | 32° to 212° | Yes | Canada | 0000000 | 0000000 |
For Testing | Each | |
Conductivity, Salinity, Temperature, Total Dissolved Solids (TDS) | 0000000 | 0000000 |
Flowmeters for Oxygen

Calibrated, cleaned, and bagged for oxygen service, these flowmeters are commonly used for welding. They install directly in your line. All have a flow-control knob that lets you open and close the valve at the inlet to adjust the flow rate within the range.
For technical drawings and 3-D models, click on a part number.
Pipe × Tube Connections | Overall Ht. | Flow Range, lpm | Accuracy | Max. Pressure | Max. Temp., °F | Seal Material | Mounting Orientation | Each | |
Polycarbonate Plastic Body with Brass Fittings and Flow-Control Knob | |||||||||
---|---|---|---|---|---|---|---|---|---|
Liters per Minute | |||||||||
1/8 NPT Female Inlet × Barbed Outlet for 1/4" Tube ID | 7 1/4" | 0.25 to 3.5 | ±10% | 150 psi @ 72° F | 140° | Fluoroelastomer Rubber | Vertical | 0000000 | 0000000 |
1/8 NPT Female Inlet × Barbed Outlet for 1/4" Tube ID | 7 1/4" | 0.5 to 8 | ±10% | 150 psi @ 72° F | 140° | Fluoroelastomer Rubber | Vertical | 0000000 | 000000 |
1/8 NPT Female Inlet × Barbed Outlet for 1/4" Tube ID | 7 1/4" | 0.5 to 15 | ±10% | 150 psi @ 72° F | 140° | Fluoroelastomer Rubber | Vertical | 0000000 | 000000 |
Gas Pressure Gauges







Use these gauges with pumps, filters, regulators, and in process lines to monitor the pressure of compressed gas. Mount them with the dial face upright. Gauges for use with acetylene can also be used in welding applications.
Gauges with brass case are cleaned to meet ASME B40.1, Level IV for oxygen service.
Gauges with 304 stainless steel case are cleaned and bagged to meet ASME B40.1, Level IV for oxygen service.
For technical drawings and 3-D models, click on a part number.
- For Use With: Air, Acetylene, Carbon Dioxide, and Oxygen
- Accuracy: ±2% Mid Scale (Grade B)
Available Pressure Ranges | ||
---|---|---|
Pressure Range, psi | Graduation Marks, psi | Numeric Increments, psi |
0 to 30 | 1 | 5 |
0 to 60 | 1 | 10 |
0 to 100 | 2 | 20 |
0 to 200 | 5 | 40 |
0 to 400 | 10 | 50 |
0 to 600 | 10 | 100 |
0 to 1,000 | 20 | 200 |
0 to 2,000 | 50 | 400 |
0 to 3,000 | 50 | 500 |
0 to 4,000 | 100 | 500 |
- For Use With: Oxygen
- Accuracy: ±1% Mid Scale (Grade A); except
4" Dial Dia.: ±1% Full Scale (Grade 1A)
Available Pressure Ranges | |||||||||
---|---|---|---|---|---|---|---|---|---|
Bottom and Center Back Connections | Lower Back Connection | ||||||||
Pressure Range | Graduation Marks | Numeric Increments | Graduation Marks | Numeric Increments | |||||
psi | kPa | psi | kPa | psi | kPa | psi | kPa | psi | kPa |
2 1/2" Dial Diameter | |||||||||
0 to 15 | 0 to 102 | 0.2 | 2 | 3 | 20 | __ | __ | __ | __ |
0 to 30 | 0 to 205 | 0.5 | 5 | 5 | 50 | __ | __ | __ | __ |
0 to 100 | 0 to 680 | 2 | 10 | 20 | 100 | __ | __ | __ | __ |
0 to 200 | 0 to 1,350 | 5 | 50 | 50 | 200 | __ | __ | __ | __ |
0 to 300 | 0 to 2,050 | 5 | 50 | 50 | 500 | __ | __ | __ | __ |
0 to 600 | 0 to 4,100 | 10 | 100 | 100 | 1,000 | __ | __ | __ | __ |
4" Dial Diameter | |||||||||
0 to 15 | 0 to 103 | 0.2 | 1 | 3 | 10 | 0.2 | 1 | 3 | 10 |
0 to 30 | 0 to 206 | 0.5 | 2 | 5 | 20 | 0.5 | 2 | 5 | 20 |
0 to 100 | 0 to 680 | 1 | 10 | 10 | 100 | 1 | 10 | 10 | 100 |
0 to 200 | 0 to 1,360 | 2 | 20 | 20 | 200 | 2 | 20 | 20 | 200 |
0 to 300 | 0 to 2,060 | 5 | 20 | 50 | 200 | 5 | 20 | 50 | 200 |
0 to 600 | 0 to 4,100 | 10 | 50 | 100 | 500 | 10 | 100 | 100 | 1,000 |
Bottom Connection | Center Back Connection | Lower Back Connection | ||||||||
---|---|---|---|---|---|---|---|---|---|---|
Dial Diameter | Pipe Size | Environment Temp. Range, °F | Process Temp. Range, °F | Mounting Orientation | Each | Each | Each | |||
NPT Male | ||||||||||
2 1/2" | 1/4 | -40° to 140° | -40° to 140° | Upright | 0000000 | 000000 | 0000000 | 000000 | 000000 | 00 |
4" | 1/4 | -40° to 140° | -40° to 140° | Upright | 0000000 | 00000 | 000000 | 00 | 0000000 | 000000 |