Tube Monitors | McMaster-Carr

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	For Use With For Use With

	Connection Style Connection Style

	System of Measurement System of Measurement

Inch

	Connection Type Connection Type	Show

Tube

	Connection Type Connection Type	Hide

	Scale Scale

	Measures Measures

Differential Pressure

Differential Vacuum

Pressure

	Maximum Pressure Maximum Pressure

	Display Type Display Type


Digital	Scale

Dial	U-Tube

Inclined Scale

	Maximum Pressure, in. of H2O Maximum Pressure, in. of H2O

	Maximum Flow Maximum Flow

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

DFARS Specialty Metals
COTS-Exempt

	Maximum Temperature Maximum Temperature

	Minimum Temperature Minimum Temperature

	For Tube OD For Tube OD

	Height Height

	Minimum Flow Minimum Flow

	For Tube ID For Tube ID

	Flow Measurement Scale Flow Measurement Scale

Gallons per Minute

Liters per Minute

Cubic Centimeters per Minute

	Connection Material Connection Material

Stainless Steel

Brass

Plastic

	Gender Gender

Male

Female

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

REACH Compliant

	Input Voltage Input Voltage

1.8-3.6V DC

10-40V DC

13-30V DC

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

RoHS Compliant

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100 Products

About Pipe Size

About Pressure Gauges

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.

About Pressure Transmitters

For Use With: Air, Argon, Nitrogen, Water
Accuracy: ±0.25%
Tube Connection: Unthreaded Male
Housing Material: Stainless Steel
Connection Material: Stainless Steel
Temperature Range: 30° to 120° F

Measure your equipment’s pressure and send the data directly to a development board or single-board computer. Also known as transducers, these transmitters convert pressure into an electrical I²C signal and transmit it to your board by connecting a cord (not included) with a Qwiic connection. Transmitters connect directly to your machinery via tubing (not included), letting you monitor activity such as gas tank pressurization and liquid fill level.

Unlike other pressure transmitters that measure the difference between your system and the atmosphere, these transmitters give measurements relative to zero pressure—regardless of altitude or temperature. They will only provide accurate readings within the rated pressure range. Maximum pressure is the highest point a transmitter can withstand without damage. Transmitters are accurate only within the pressure range, not up to the maximum pressure.

I2C Communication Protocol—Qwiic Connection
Pressure Range, psi	Max. Pressure, psi	Input Voltage	For Tube ID	I2C Address	No. of Qwiic Connections	Ht.	Wd.		Each
1-25	60	1.8-3.6V DC	0.1"	0x18	2	1"	1"	0000000	000000

Sanitary Pressure Transmitters

For Use With: Air, Argon, Diesel Fuel, Gasoline, Hydraulic Fluid, Nitrogen, Water
Accuracy: ±0.5%
Housing Material: 304 Stainless Steel
Connection Material: 316 Stainless Steel
Temperature Range: 30° to 300° F

For use in sanitary applications such as food processing, these transmitters are 3-A certified. They are rated IP66, IP69K, and NEMA 4X to resist washdowns and corrosion. Also known as transducers, they convert pressure to an electrical signal that can be interpreted by receiving devices, such as remote displays, programmable logic controllers, and motor speed controls to monitor pressure or control equipment. As pressure increases, the output signal from the transmitter will increase. For your receiving device to interpret the signal from the transmitter, you will need to calibrate it for the transmitter's pressure range and output signal. Maximum pressure is the maximum spike in pressure a transmitter can withstand without damage. Transmitters are accurate only within the pressure range, not up to the maximum pressure.

These transmitters connect using two wires to send a 4-20mA current output. The same wire is used to send a signal to the receiver and to power the transmitter. Current doesn’t lose signal over long distances and isn’t affected by electrical interference from other devices. Transmitters are compatible with micro M12 sockets.

For technical drawings and 3-D models, click on a part number.

For 1 1/2" Flange OD
Pressure Range, psi	Max. Pressure, psi	Input Voltage	For No. of Wires	Ht.	Wd.	Environmental Rating	Specifications Met		Each
4-20mA Current Output—5-Pole Micro M12 Plug Connection
0-15	30	10-40V DC	2	2 5/16"	2 7/16"	IP66, IP69K, NEMA 4X	3-A Certified 74-06, CE Marked	00000000	0000000
0-50	100	10-40V DC	2	2 5/16"	2 7/16"	IP66, IP69K, NEMA 4X	3-A Certified 74-06, CE Marked	00000000	000000
0-100	200	10-40V DC	2	2 5/16"	2 7/16"	IP66, IP69K, NEMA 4X	3-A Certified 74-06, CE Marked	00000000	000000
0-200	400	10-40V DC	2	2 5/16"	2 7/16"	IP66, IP69K, NEMA 4X	3-A Certified 74-06, CE Marked	00000000	000000
0-500	1,000	10-40V DC	2	2 5/16"	2 7/16"	IP66, IP69K, NEMA 4X	3-A Certified 74-06, CE Marked	00000000	000000
For 2" Flange OD
4-20mA Current Output—5-Pole Micro M12 Plug Connection
0-15	30	10-40V DC	2	2 5/16"	2 7/16"	IP66, IP69K, NEMA 4X	3-A Certified 74-06, CE Marked	00000000	000000
0-50	100	10-40V DC	2	2 5/16"	2 7/16"	IP66, IP69K, NEMA 4X	3-A Certified 74-06, CE Marked	00000000	000000
0-100	200	10-40V DC	2	2 5/16"	2 7/16"	IP66, IP69K, NEMA 4X	3-A Certified 74-06, CE Marked	00000000	000000
0-200	400	10-40V DC	2	2 5/16"	2 7/16"	IP66, IP69K, NEMA 4X	3-A Certified 74-06, CE Marked	00000000	000000
0-500	1,000	10-40V DC	2	2 5/16"	2 7/16"	IP66, IP69K, NEMA 4X	3-A Certified 74-06, CE Marked	00000000	000000

Low-Pressure Differential Pressure Transmitters

For Use With: Air, Argon, Nitrogen
Accuracy: ±1%
Tube Connection Type: Barbed
Housing Material: Polycarbonate
Temperature Range: 32° to 122° F

These transmitters are commonly used to monitor airflow and to indicate when filters in HVAC systems become clogged. They convert the difference in pressure between two points in a low-pressure system into an electrical signal that can be interpreted by receiving devices, such as remote displays, programmable logic controllers, and motor speed controls to monitor pressure or control equipment. Transmitters will only provide accurate readings within the rated pressure range. They come with a calibration certificate traceable to NIST. Maximum pressure is the maximum spike in pressure a transmitter can withstand without damage. Transmitters are accurate only within the pressure range, not up to the maximum pressure. All transmitters are rated IP67 for protection in washdown environments.

These transmitters connect using three wires—two wires into the power supply and a separate wire that sends a voltage signal to the receiver. The receiver and the transmitter share a common ground wire back to the power supply.

							Mounting Holes				Transmitters with Calibration Certificate Traceable to NIST
Pressure Range, in. of H2O	Max. Pressure, psi	Input Voltage	For Tube ID	For No. of Wires	For DIN Rail Ht., mm	Mounting Hardware Included	Dia.	No. of	Ht.	Wd.		Each
0-10V DC Voltage Output—Screw Terminals
Surface Mount
-0.5 to 0.5, -1 to 1, -2.5 to 2.5, -5 to 5	10	13-30V DC	3/16"	3	__	No	3/16"	2	5 7/16"	3 3/16"	0000000	0000000
DIN Rail or Surface Mount
-0.5 to 0.5, -1 to 1, -2.5 to 2.5, -5 to 5	10	13-30V DC	3/16"	3	35	No	3/16"	2	5 7/16"	3 3/16"	0000000	000000

Low-Pressure Differential Gauges with U-Tube

Also known as manometers, these gauges come with indicating liquid that moves up and down two columns—the difference in height between them is your pressure. They are commonly used to indicate clogged filters.

Magnet-mount gauges can be moved for use in multiple locations. Gauges with barbed tube connection have a flexible body that rolls up for storage or transport.

Nylon Plastic Connection—(in. of H₂O)

For Use With: Air, Argon, Carbon Dioxide, and Hydrogen
Accuracy: Not Rated (Not Graded)

With Barbed Tube Connection for 3/16" Tube ID
Pressure Range, in. of H₂O	Scale Range, in. of H₂O	Numeric Increments, in. of H₂O	Graduation Marks, in. of H₂O	Max. Pressure	Ht.	Max. Process Temp., °F	Gender	Mount Type		Each
0-8	4-0-4	1	0.1	Not Rated	17"	130°	Male	Magnet	0000000	0000000
0-12	6-0-6	1	0.1	Not Rated	21"	130°	Male	Magnet	0000000	000000
0-16	8-0-8	1	0.1	Not Rated	25"	130°	Male	Magnet	0000000	000000
0-24	12-0-12	1	0.1	Not Rated	33"	130°	Male	Magnet	0000000	000000
0-30	15-0-15	1	0.1	Not Rated	39"	130°	Male	Magnet	0000000	000000
0-36	18-0-18	1	0.1	Not Rated	45"	130°	Male	Magnet	0000000	000000
0-48	24-0-24	1	0.1	Not Rated	57"	130°	Male	Magnet	0000000	000000
0-60	30-0-30	1	0.1	Not Rated	69"	130°	Male	Magnet	0000000	000000
0-72	36-0-36	1	0.1	Not Rated	81"	130°	Male	Magnet	0000000	000000

Brass Connection—(in. of H₂O)

For Use With: Air, Argon, Carbon Dioxide, and Hydrogen
Accuracy: Not Rated (Not Graded)

With Compression Tube Connection for 1/4" Tube OD
Pressure Range, in. of H₂O	Scale Range, in. of H₂O	Numeric Increments, in. of H₂O	Graduation Marks, in. of H₂O	Max. Pressure, psi	Ht.	Gender	Mount Type		Each
0-8	4-0-4	1	0.1	100	20"	Female	Magnet	0000000	0000000
0-12	6-0-6	1	0.1	100	25"	Female	Magnet	0000000	000000
0-16	8-0-8	1	0.1	100	30"	Female	Magnet	0000000	000000
0-20	10-0-10	1	0.1	100	34"	Female	Magnet	0000000	000000
0-24	12-0-12	1	0.1	100	39"	Female	Magnet	0000000	000000
0-36	18-0-18	1	0.1	100	58"	Female	Magnet	0000000	000000

Low-Pressure Differential Gauges with Digital Display

Measure small changes in air pressure with these hand-held gauges. They have a four-digit LCD display for easy reading of measurements. Gauges are commonly used to indicate clogged filters and to monitor fans and blowers.

Aluminum Case with Nickel-Plated Brass Connection—(psi, bar)

For Use With: Air, Natural Gas
Accuracy: ±0.5% Full Scale (Not Graded)

Pressure Range
psi	bar	Resolution, psi	Max. Pressure, psi	For Tube ID	Environment Temp. Range, °F	Process Temp. Range, °F	Digit Ht.	Ht.	Wd.	Batteries Included	Environmental Rating		Each
Barbed Tube Connection
0-30	0-2.069	0.01	60	1/8"-3/16"	35° to 100°	0° to 140°	3/8"	6 1/2"	2 13/16"	Yes	NEC Class I Division 2 Groups A, B, C, D	0000000	0000000
Barbed Tube Connection with Calibration Certificate Traceable to NIST
0-30	0-2.069	0.01	60	1/8"-3/16"	35° to 100°	0° to 140°	3/8"	6 1/2"	2 13/16"	Yes	NEC Class I Division 2 Groups A, B, C, D	0000000	000000

Optional Nylon Carrying Case

0000000

Each

000000

Aluminum Case with Nickel-Plated Brass Connection—(kPa, in. of H₂O)

For Use With: Air, Natural Gas
Accuracy: ±0.5% Full Scale (Not Graded)

Pressure Range
kPa	in. of H₂O	Resolution, in. of H₂O	Max. Pressure, psi	For Tube ID	Environment Temp. Range, °F	Process Temp. Range, °F	Digit Ht.	Ht.	Wd.	Batteries Included	Environmental Rating		Each
Barbed Tube Connection
0-4.982	0-20	0.01	10	1/8"-3/16"	35° to 100°	0° to 140°	3/8"	6 1/2"	2 13/16"	Yes	NEC Class I Division 2 Groups A, B, C, D	0000000	0000000
0-49.82	0-200	0.1	30	1/8"-3/16"	35° to 100°	0° to 140°	3/8"	6 1/2"	2 13/16"	Yes	NEC Class I Division 2 Groups A, B, C, D	0000000	000000
Barbed Tube Connection with Calibration Certificate Traceable to NIST
0-4.982	0-20	0.01	10	1/8"-3/16"	35° to 100°	0° to 140°	3/8"	6 1/2"	2 13/16"	Yes	NEC Class I Division 2 Groups A, B, C, D	0000000	000000
0-49.82	0-200	0.1	30	1/8"-3/16"	35° to 100°	0° to 140°	3/8"	6 1/2"	2 13/16"	Yes	NEC Class I Division 2 Groups A, B, C, D	0000000	000000

Optional Nylon Carrying Case

0000000

Each

000000

Low-Pressure Differential Gauges with Inclined Scale

Easier to read than U-tube gauges, these use an inclined scale to measure pressure or velocity in air applications. Gauges are also known as manometers.

Polycarbonate Plastic Connection—(in. of H₂O)

For Use With: Air
Accuracy: ±3% Full Scale (Not Graded)

				Indicating Liquid
Pressure Range, in. of H₂O	Max. Pressure, psi	Max. Process Temp. Range, °F	Ht.	Color	Specific Gravity	Mount Type	Mounting Fasteners Included	Includes		Each
With Barbed Tube Connection for 3/16" Tube ID
0-3	10	140°	6"	Red	0.826	Screw On	Yes	8-ft. Lg. Tubing; Indicating Liquid	000000	000000
0-7	10	140°	6"	Blue	1.91	Screw On	Yes	8-ft. Lg. Tubing; Indicating Liquid	000000	000000

Vibration- and Corrosion-Resistant Pressure Gauges

Dual Scale With
Bottom Connection
And Yor-Lok Fitting

Dual Scale With Center
Back Connection
And Yor-Lok Fitting

Bottom Connection (Yor-Lok Fitting)

Center Back Connection (Yor-Lok Fitting)

Gauges with Yor-Lok connection allow for quick connections to metal tubing.

For technical drawings and 3-D models, click on a part number.

304 Stainless Steel Case with 316 Stainless Steel Connection—Dual Scale (psi, kPa)

For Use With: Air, Water, Hydraulic Fluid, Carbon Dioxide, Ethyl Alcohol, and Natural Gas
Accuracy: ±1.5% Full Scale (Not Graded)

Available Pressure Ranges
Pressure Range		Graduation Marks		Numeric Increments
psi	kPa	psi	kPa	psi	kPa
0 to 30	0 to 200	0.5	5	5	50
0 to 60	0 to 400	1	10	10	100
0 to 100	0 to 700	2	10	20	100
0 to 160	0 to 1,100	2	20	20	200
0 to 300	0 to 2,000	5	50	50	500
0 to 1,000	0 to 7,000	20	100	200	1,000

Bottom Connection
Dial Diameter	Environment Temp. Range, °F	Process Temp. Range, °F	For Tube OD	Mounting Orientation	Liquid Type	Compatible Tube Fittings		Each
Yor-Lok Female
2 1/2"	15° to 150°	15° to 150°	1/4"	Any	Glycerin	Parker A-Lok, Swagelok®	0000000	0000000
Center Back Connection
Yor-Lok Female
2 1/2"	15° to 150°	15° to 150°	1/4"	Any	Glycerin	Parker A-Lok, Swagelok®	0000000	000000

Differential Pressure and Vacuum Gauges with Digital Display

Gauges have a four-digit LCD display for easy reading of measurements. Commonly used to indicate clogged filters, these gauges display the difference between two pressure or vacuum measurements. They are also known as compound gauges.

Aluminum Case with Brass Connection—(psi, kPa, in. of H₂O, in. of Hg, mbar)

For Use With: Air
Accuracy: ±0.5% Full Scale (Not Graded)

Pressure Range
psi	kPa	in. of H₂O	mbar	Vacuum Range, in. of Hg	Resolution, in. of H₂O	Max. Pressure, psi	For Tube ID	Environment Temp. Range, °F	Process Temp. Range, °F	Digit Ht.	Batteries Included	Features		Each
Barbed Tube Connection
0-0.723	0-4.982	0-20"	0-49.82	1.471"-0	0.01	10	1/8"-3/16"	35° to 100°	0° to 140°	3/8"	Yes	40-Reading Memory, Overpressure Alarm	0000000	0000000
0-7.225	0-49.82	0-200"	0-498.2	14.71"-0	0.1	30	1/8"-3/16"	35° to 100°	0° to 140°	3/8"	Yes	40-Reading Memory, Overpressure Alarm	0000000	000000
0-20	0-137.9	0-553"	0-1,379	40.72"-0	0.01	60	1/8"-3/16"	35° to 100°	0° to 140°	3/8"	Yes	40-Reading Memory, Overpressure Alarm	0000000	000000
Barbed Tube Connection with Calibration Certificate Traceable to NIST
0-0.723	0-4.982	0-20"	0-49.82	1.471"-0	0.01	10	1/8"-3/16"	35° to 100°	0° to 140°	3/8"	Yes	40-Reading Memory, Overpressure Alarm	0000000	000000
0-7.225	0-49.82	0-200"	0-498.2	14.71"-0	0.1	30	1/8"-3/16"	35° to 100°	0° to 140°	3/8"	Yes	40-Reading Memory, Overpressure Alarm	0000000	000000
0-20	0-137.9	0-553"	0-1,379	40.72"-0	0.01	60	1/8"-3/16"	35° to 100°	0° to 140°	3/8"	Yes	40-Reading Memory, Overpressure Alarm	0000000	000000

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.

Polycarbonate Plastic Body with Brass Fittings and Flow-Control Knob
Pipe × Tube Connections	Overall Ht.	Flow Range, lpm	Accuracy	Max. Pressure	Max. Temp., °F	Seal Material	Mounting Orientation		Each
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

Flow Sights with Barbed Fittings for Water, Oil, Air, and Inert Gas

Monitor liquid movement, color, and clarity in tube systems—this sight has barbed fittings that slide into soft plastic and rubber tubing. It has a clear body and a ball indicator that moves when flow is present so you can visually confirm flow from a distance.

						Indicator
For Tube ID	Temp. Range, °F	End-to-End Lg.	Ht.	Max. Pressure	Direction of Flow	Material	Color		Each
Polycarbonate Plastic Body
1/4" to 3/8"	32° to 180°	3"	2 1/4"	10 psi @ 70° F	Bottom to Top, Left to Right, Right to Left, Top to Bottom	Nylon Plastic	White	0000000	000000

Flow Sights for Food and Beverage

Made of FDA-listed materials for use with food and beverage, these sights have sanitary quick-clamp connections and an electropolished 316 stainless steel body for easy disassembly and cleaning. They meet USP (United States Pharmacopeia) Class IV standard for food applications. Sights let you visually confirm flow and inspect liquid color and clarity. Backlight the back window to increase the visibility of dark liquids.

For technical drawings and 3-D models, click on a part number.

316 Stainless Steel Body
For Tube OD	Temp. Range, °F	Window Lg.	End-to-End Lg.	Ht.	Max. Pressure	Direction of Flow	Specifications Met		Each
3/8"	-20° to 300°	3/4"	2 1/2"	3/8"	150 psi @ 265° F	Any Direction	FDA Compliant 21 CFR 177.2600, USP Class IV	0000000	0000000
1/2"	-20° to 300°	3/4"	3"	1/2"	150 psi @ 265° F	Any Direction	FDA Compliant 21 CFR 177.2600, USP Class IV	0000000	000000
3/4"	-20° to 300°	1 1/8"	3 3/8"	3/4"	150 psi @ 265° F	Any Direction	FDA Compliant 21 CFR 177.2600, USP Class IV	0000000	000000
1"	-20° to 300°	1 1/8"	3 1/2"	1"	120 psi @ 265° F	Any Direction	FDA Compliant 21 CFR 177.2600, USP Class IV	0000000	000000
1 1/2"	-20° to 300°	1 1/2"	4 1/8"	1 1/2"	115 psi @ 265° F	Any Direction	FDA Compliant 21 CFR 177.2600, USP Class IV	0000000	000000
2"	-20° to 300°	1 7/8"	4 3/4"	2"	100 psi @ 265° F	Any Direction	FDA Compliant 21 CFR 177.2600, USP Class IV	0000000	000000

Flowmeter/Totalizers for Water and Chemicals

To withstand water and a variety of caustic chemicals, these flowmeter/totalizers have a corrosion-resistant 316 stainless steel body. They measure both flow rate and total flow volume. The batch total volume can be reset after each metering application. The total flow volume cannot be reset. They have an enclosure that meets NEMA 4 for protection from dirt and washdowns.

Flowmeter/totalizers with threaded connections have 316 stainless steel seals, which resist corrosion.

Connect flowmeter/totalizers with quick-clamp connections to other quick-clamp fittings (often called tri-clamp fittings) using a gasket and clamp. They’re easy to attach and remove for cleaning.

Certificate of calibration traceable to NIST states that the flowmeter/totalizer has passed a test for accuracy.

Optional output module transmits output signals to an external device such as a data recorder, logger, or remote display (not included). It includes 10 feet of cable with wire leads.

Optional remote panel-mounting kit lets you mount the meter’s display up to 100 feet away. It includes a sensor module and 10 feet of cable with wire leads.

Hazardous location environmental ratings indicate where manufacturers have included safety features in products to facilitate their safe use in hazardous environments. Before selecting a product for a hazardous location, ensure it is rated for your environment. See About Hazardous Location Environmental Ratings.

With Quick-Clamp Tube Connections

Flowmeter/Totalizers
Quick-Clamp Tube Connections											Replacement Displays
Type	Gender	For Tube OD	Flange OD	End-to-End Lg.	Flow Range, gpm	Accuracy	Max. Total Volume, units	Max. Pressure		Each		Each
Flowmeter/Totalizers
316 Stainless Steel Body and Seal—14° to 140° F
Gallons per Minute, Liters per Minute
Standard	Female	3/4"	0.984"	5"	1 to 10	±1.5%	999,999	1500 psi @ 70° F	0000000	000000000	00000000	0000000
Standard	Female	1"	1.984"	5"	2 to 20	±1%	999,999	1500 psi @ 70° F	0000000	00000000	00000000	000000
Standard	Female	1 1/2"	1.984"	5 1/2"	5 to 50	±1%	999,999	1500 psi @ 70° F	0000000	00000000	00000000	000000
Standard	Female	2"	2.515"	6 1/2"	10 to 100	±0.75%	999,999	1500 psi @ 70° F	0000000	00000000	00000000	000000
Standard	Female	2 1/2"	3.047"	7"	20 to 200	±0.75%	999,999	1500 psi @ 70° F	0000000	00000000	00000000	000000
Flowmeter/Totalizers with Certificate of Calibration Traceable to NIST
316 Stainless Steel Body and Seal—14° to 140° F
Gallons per Minute, Liters per Minute
Standard	Female	3/4"	0.984"	5"	1 to 10	±1.5%	999,999	1500 psi @ 70° F	0000000	00000000	00000000	000000
Standard	Female	1"	1.984"	5"	2 to 20	±1%	999,999	1500 psi @ 70° F	0000000	00000000	00000000	000000
Standard	Female	1 1/2"	1.984"	5 1/2"	5 to 50	±1%	999,999	1500 psi @ 70° F	0000000	00000000	00000000	000000
Standard	Female	2"	2.515"	6 1/2"	10 to 100	±0.75%	999,999	1500 psi @ 70° F	0000000	00000000	00000000	000000
Standard	Female	2 1/2"	3.047"	7"	20 to 200	±0.75%	999,999	1500 psi @ 70° F	0000000	00000000	00000000	000000

Accessories

Component	Pkg. Qty.		Pkg.
Disposable Batteries	4	00000000	00000

Flow Transmitters for Air

Calibrated for compressed air, these transmitters send flow-rate readings to data recorders, loggers, and displays. They have compression tube connections that bite down on hard metal and plastic tubing for a secure seal. The digital display shows the flow rate, so these transmitters can also be used as flowmeters. Fittings are 316 stainless steel for corrosion resistance in harsh environments.

								Output
Tube Connections	End-to-End Lg.	Flow Range	Accuracy	Max. Pressure	Temp. Range, °F	Seal Material	Mounting Orientation	Signal Connection	Signal	Voltage	Plug Type		Each
ABS Plastic Body with 316 Stainless Steel
Cubic Centimeters per Minute
Male Compression for 1/8" Tube OD	4 7/8"	1 to 50 cc/min.	±3%	150 psi @ 70° F	32° to 122°	Elastomer Rubber	Horizontal	RS-232 Port	4 to 20 mA	120V AC 240V AC	Two Prong	0000000	000000000
Male Compression for 1/8" Tube OD	4 7/8"	4 to 200 cc/min.	±3%	150 psi @ 70° F	32° to 122°	Elastomer Rubber	Horizontal	RS-232 Port	4 to 20 mA	120V AC 240V AC	Two Prong	0000000	00000000
Male Compression for 1/8" Tube OD	4 7/8"	10 to 500 cc/min.	±3%	150 psi @ 70° F	32° to 122°	Elastomer Rubber	Horizontal	RS-232 Port	4 to 20 mA	120V AC 240V AC	Two Prong	0000000	00000000
Liters per Minute
Male Compression for 1/8" Tube OD	4 7/8"	0.02 to 1 lpm	±3%	150 psi @ 70° F	32° to 122°	Elastomer Rubber	Horizontal	RS-232 Port	4 to 20 mA	120V AC 240V AC	Two Prong	0000000	00000000
Male Compression for 1/8" Tube OD	4 7/8"	0.1 to 5 lpm	±3%	150 psi @ 70° F	32° to 122°	Elastomer Rubber	Horizontal	RS-232 Port	4 to 20 mA	120V AC 240V AC	Two Prong	0000000	00000000

High-Vacuum Flanged Sights

Add a window to your high-vacuum system. With a pane of glass sealed inside a high-vacuum CF flange, these sights bolt onto vacuum chambers, tee fittings, and manifolds. Use a copper gasket (sold separately) to create a seal. Not for use with pressure. To illuminate dark interiors, attach an optional light to the flange with set screws.

For technical drawings and 3-D models, click on a part number.

Sights

Sight

					Window			Bolt Holes
Trade Number	Flange OD	For Tube OD	High Vacuum Connection Type	Max. Vacuum	Dia.	Material	Bolt Circle Dia.	No. of	Dia.	Max. Temp., °F		Each
304 Stainless Steel
16	1 21/64"	__	CF	1 × 10 ^-11 torr @ 72° F	5/8"	Glass	1 1/16"	6	11/64"	660°	0000000	0000000
40	2 3/4"	__	CF	1 × 10 ^-11 torr @ 72° F	1 1/2"	Glass	2 5/16"	6	17/64"	660°	0000000	000000
63	4 1/2"	__	CF	1 × 10 ^-11 torr @ 72° F	2 9/16"	Glass	3 5/8"	8	21/64"	660°	0000000	000000
63	4 1/2"	2 1/2"	CF	1 × 10 ^-11 torr @ 72° F	2 5/8"	Glass	3 5/8"	8	21/64"	750°	0000000	000000
100	6"	__	CF	1 × 10 ^-11 torr @ 72° F	3 35/64"	Glass	5 1/8"	16	21/64"	660°	0000000	000000

Gaskets

Gasket

For Flange OD	For Tube OD	Gasket Material	Specifications Met		Each
1 21/64"	3/4"	Copper	ASTM F68	0000000	00000
2 3/4"	1 1/2"	Copper	ASTM F68	0000000	0000
4 1/2"	2 1/2"	Copper	ASTM F68	0000000	0000
6"	4"	Copper	ASTM F68	0000000	00000

Optional Lights

Built-In LED Bulbs
For Flange Trade Number	For Flange OD	ID	Housing Material	Mount Type	Mounting Hardware Included		Each
40	2 3/4"	1 1/8"	Anodized Aluminum	Set Screw	Yes	0000000	0000000
63	4 1/2"	2 13/32"	Anodized Aluminum	Set Screw	Yes	0000000	000000
100	6"	3 9/16"	Anodized Aluminum	Set Screw	Yes	0000000	000000

High-Vacuum Sights for Quick-Clamp Fittings

Sight Shown Assembled with Tube Fitting, Ring, and Clamp (All Sold Separately)

Designed with quick-clamp (KF) connections, these sights connect to a port on a high-vacuum chamber, so you can monitor what's happening inside. A sleeve seals the glass window to the body of the sight to prevent leaks. To connect to your chamber, you'll need a clamp and a ring (sold separately). Not for use in pressure applications.

For technical drawings and 3-D models, click on a part number.

Sights

Sight

				Window
Trade Number	For Flange OD	High Vacuum Connection Type	Max. Vacuum	Dia.	Material	Max. Temp., °F		Each
304 Stainless Steel
16	1.18"	ISO-KF	1 × 10 ^-9 torr @ 72° F	5/8"	Glass	660°	0000000	0000000
25	1.57"	ISO-KF	1 × 10 ^-9 torr @ 72° F	5/8"	Glass	660°	0000000	000000
40	2.16"	ISO-KF	1 × 10 ^-9 torr @ 72° F	1 1/4"	Glass	660°	0000000	000000
50	2.95"	ISO-KF	1 × 10 ^-9 torr @ 72° F	1 1/4"	Glass	660°	0000000	000000

Clamps

Trade Number	For Flange OD	For Tube OD	Material	Max. Vacuum	High Vacuum Connection Type		Each
10, 16	1.18"	1/2", 3/4"	Aluminum	1 × 10^-7 torr @ 72° F	ISO-KF	00000000	00000
25	1.57"	1"	Aluminum	1 × 10^-7 torr @ 72° F	ISO-KF	0000000	00000
40	2.16"	1 1/2"	Aluminum	1 × 10^-7 torr @ 72° F	ISO-KF	0000000	00000
50	2.95"	2"	Aluminum	1 × 10^-7 torr @ 72° F	ISO-KF	0000000	00000

Rings

Trade Number	For Flange OD	For Tube OD	Inner Ring Material	Max. Vacuum	High Vacuum Connection Type		Each
16	1.18"	3/4"	304 Stainless Steel	1 × 10^-7 torr @ 72° F	ISO-KF	00000000	00000
25	1.57"	1"	304 Stainless Steel	1 × 10^-7 torr @ 72° F	ISO-KF	0000000	0000
40	2.16"	1 1/2"	304 Stainless Steel	1 × 10^-7 torr @ 72° F	ISO-KF	0000000	00000
50	2.95"	2"	304 Stainless Steel	1 × 10^-7 torr @ 72° F	ISO-KF	0000000	00000

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