BinMaster Level Sensors Capacitance Probe Level Switch Sensor

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Capacitance Probes
Quality probes made in the USA

BinMaster capacitance probes are designed with features that make them accurate and reliable, even under rigorous or harsh conditions.

All models of PROCAP capacitance probes are made in the USA and are simple to use, offer long-lasting durability, and are maintenance free.

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Probes for every process

Standard Probes

The standard PROCAP I & II probes are offered with an expansive choice of Delrin, Teflon, stainless steel and bare probes—all custom assembled to a customer’s specification.

Hazardous Locations

PROCAP IX & IIX probes are designed for use in hazardous locations for Class I, Groups C & D and Class II, Groups E, F & G using either a standard or flush mounted sensing probe.

Sanitary Applications

Food and pharmaceutical plants find PROCAP 3A sanitary probes with a thread-free mounting flange and clean-in-place, tri-clamp connection ideal for 3-A, USDA, or food grade use.

Bendable Probes

A bendable probe can be used to avoid obstructions in a vessel and is a clever solution for use in smaller mixers, hoppers, or containers.

Heavy Duty

Heavy duty HD probes are made of 1” solid stainless-steel for use in high temperatures up to 500°F. Popular in power plants, they can be used in heavy or challenging materials such as coal, fly ash, or clinker.

Flush Mounted

Flush mounted PROCAP FL probes are nonintrusive and ideal for use on a vessel wall, conveyor housing, chute, or tight spaces where material may damage a standard probe.

Remote Electronics

For hostile areas with high temperatures or vibration, the PRO Remote has remote electronics to distance the electronics up to 75 feet from the sensing probe.

Automatic Calibration

For fast installation, the PRO AUTO-CAL probes with automatic calibration set up in seconds using a magnet without opening the unit cover.

Compact and Mini Probes

Compact Probes

COMPACT PRO probes are ideal for smaller vessels and tight spaces such as chutes, conveyors, pipes, or small hoppers.

Mini for Liquids

Great for food or pharmaceuticals, the MCP-100 mini capacitance probe is a compact sensor for level measurement and pressure detection for water-based liquids in sanitary and hygienic applications.

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Mini for Solids

The MCP-200 point level detector is used in tanks, vessels, hoppers, or feeders containing bulk solids. There’s hygienic options for food and pharmaceutical processing.

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Extended Mini

The MCP-300 is an extended mini capacitance probe with a stainless-steel tube customized in lengths from 2.5” to 9.8”. Use it for point level indication in foodstuffs, dairy cultures, or breweries, and in the pump room to detect leaks.

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Capacitance Probes

How PROCAP Works

PROCAP capacitance probes measure the difference in the dielectric constant of the material versus the surrounding air allowing the sensor to detect the presence or absence of material. The probes are very responsive, sensing changes in capacitance as small as just one picofarad.

Capacitance probes are often wired to a light, horn, or point level alarm panel for alert status indication.

Mounting Options

Mount BinMaster’s PROCAP capacitance probes on the top, side, or cone of the vessel for high, mid, or low-level detection.

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Sensor Status Notification

An LED light on top of the unit indicates the sensor status is covered, uncovered, or in a failed condition. This provides fall-safe protection and prevents process mishaps caused by a power failure.

ProShield Fights Bridging & Buildup

Pro-Shield protects against false readings due to buildup on the probe or bridging between the sidewall and the probe. This allows the probe to be used in dusty, sticky, or clingy materials.

Simple Quick Set Calibration

Calibration of PROCAP sensors is fast and precise. Using two single-turn potentiometers allows for sensitivity setting even when no material is present.

Time delays prevent false alarms

Users simply set a time delay of up to 30 seconds before the sensor alerts to a signal change. The time delay feature minimizes false signals caused by sudden material shifts or splashing liquids.

Unaffected by RF Interference

PROCAP probes are immune to RF signals from electronic plant equipment or two-way radios. This ensures interference-free operation and prevents disruptions to processing operations.

Made to Order

BinMaster builds each PROCAP probe to a customer’s specification. Each sensor is specified a power pac, fitting, lag, probe, length, and mounting plate best for its material, vessel, and operating environment. Each sensor is made in just days in BinMaster’s factory in Lincoln, Nebraska.

Vast Probe Selection

Customize your PROCAP with one of the types of probes. Most are available in a variety of lengths to suit your situation.

Delrin Shielded, Extended Shielded, Unshielded
3A Delrin® Extended Shielded
Teflon® Shielded, Extended Shielded, Unshielded
Bare Shielded or Unshielded
Heavy Duty Stainless Steel
Hanging Stainless Steel Cable
Bendable
Flush Mounted

Scroll the tables below to compare different probes to find the right one to suit your needs.

Still need help? Use the Chat button in the bottom right to reach out to one of our representatives.

Type	Standard Shielded Delrin/ Teflon Sleeved Probe	Extended Shield Delrin/ Teflon Sleeved Probe	Stubby Shielded Delrin/ Teflon Sleeved Probe
Description	The standard Delrin/Teflon sleeved probe is the most versatile all-purpose probe. It works reliably in bulk solids, powders, slurries, and liquids. It has a rugged 5/8” diameter 316 SS probe featuring “PROShield” protection against false readings because of coating or buildup.	Designed with a 10” extended PRO-Shield, used when mounting the probe through a nozzle or standpipe. This probe has all the same features as the standard probe.	Designed with a 6.5” overall length while still providing the PRO-Shield protection. This probe is specially designed for low level applications where minimal projection is preferred due to restricted area or excessive weight that could damage a longer probe. This probe has all the same features as the standard probe.
Max Temp	Delrin sleeved 250ºF (121ºC), Teflon sleeved 500ºF (260ºC)	Delrin sleeved, 250ºF (121ºC), Teflon sleeved 500ºF (260ºC)	Delrin sleeved, 250ºF (121ºC), Teflon sleeved 500ºF (260ºC)
Max Pressure	50 psi (3.5 kg/cm2) 1-1/4” NPT, 500 psi (35 kg/cm2 ), 3/4” NPT	50 psi (3.5 kg/cm2), 1-1/4” NPT, 500 psi (35 kg/cm2 ), 3/4” NPT	50 psi (3.5 kg/cm2), 1-1/4” NPT, 500 psi (35 kg/cm2), 3/4” NPT
Probe Material	5/8” diameter 316 SS Delrin/Teflon sleeved	5/8” diameter 316 SS, Delrin/Teflon sleeved	5/8” diameter 316 SS, Delrin/Teflon sleeved
Lengths	10.63”, 18”, 24”, 30”, 36”, 48”, and custom order lengths	15”, 18”, 24”, 30”, 36”, 48”, and custom order lengths	6.5”
Fitting Options	3/4” NPT, 1-1/4” NPT, 1” food grade, 1”/2”/3”/4” 150# Raised face flanges	3/4” NPT, 1-1/4”, NPT, 1” food grade, 1”/2”/3”/4” 150# Raised face flanges	3/4” NPT, 1-1/4” NPT, 1” food grade, 1”/2”/3”/4” 150#, Raised face flanges
Power Pac Option	PROCAP I & II, PROCAP IX & IIX, PRO Remote, PRO Auto-Cal	PROCAP I & II, PROCAP IX & IIX, PRO Remote, PRO Auto-Cal	: PROCAP I & II, PROCAP IX & IIX, PRO Remotes, PRO Auto-Cal
Applications	Point level detection and process control for solid, liquid and slurry materials. Used in bins, tanks, chutes, and spouts.	Point level detection and process control for solid, liquid and slurry materials. Used when mounting probe in a nozzle or standpipe. Also can be used when excessive sidewall buildup may occur.	Low level where material load on probe may cause damage or when working in a restricted area or small vessel.

Type	Shielded Delrin Sleeved Sanitary/3-A Probe	Flush Mounted Shielded Probe	Bare Shielded OEM Probe
Description	Sanitary probe meets 3-A and USDA standards, conforming to the food industry’s most demanding requirements for material, surfaces, and clean-in-place construction. This probe is designed for quick disconnect from the tank to facilitate ease of inspection and cleaning.	No probe intrusion, designed for space constrained areas or applications where material flow or bridging may damage standard probes. The probe mounts flush on a vessel wall, conveyor housing or chute. A special bin wall adapter is available when working with thick walls or angled hoppers to move the face of the probe flush or slightly protruding the inside of the vessel wall, eliminating false signals due to excessive buildup on the probe surface.	This is a bare shielded probe whose length can be modified in the field. It can be cut back to 7 inches or extended up to 8 feet. It has a rugged solid 5/8” diameter 316 SS probe featuring “PRO-Shield” protection against false readings because of coating or buildup.
Max Temp	250ºF (121ºC)	150ºF (65°C), standard probe, 450ºF (232°C), High temp probe	250ºF (121ºC)
Max Pressure	: 200 psi (14 kg/cm2 )	250 psi (17 kg/cm2 )	50 psi (3.5 kg/cm2 ), 1-1/4” NPT, 500 psi (35 kg/cm2 ), 3/4” NPT
Probe Material	: 5/8” diameter 316 SS, Delrin sleeved	Polyethylene, High Temp, Teflon	Standard probe 5/8”, diameter 316 SS/Bare with Delrin insulator
Lengths	4”, 6.5”, 10.63”, 18”, 24”, 30”, 36”, 48”, and custom order lengths	N/A	7 inches to 8 feet
Fitting Options	1” or 2” sanitary, 316 SS fitting for use with tri-clamp	5.75” hole mounted on 7.00” bolt circle 8.50” hole mounted on 9.50” bolt circle when using bin wall adapter	3/4” NPT, 1-1/4” NPT, 1” food grade, 1”/2”/3”/4” 150#, Raised face flanges
Power Pac Option	PROCAP I 3-A & II 3-A	PROCAP I & II, PROCAP IX & IIX, PRO Remote, PRO Auto-Cal	: PROCAP I & II, PRO Remote, PRO Auto-Cal
Applications	Point level detection and process control for solid, liquid and slurry materials. Built specifically for dairy, pharmaceutical, and food grade applications where 3-A/USDA sanitary standards apply. Used in bins, tanks, chutes, and spouts.	Detects presence of material or level of materials that may bend or break probes when material shifts. Works well in coal, aggregates, gravel, or other heavy and/or chunky materials.	Point level detection and process control for powders and dry bulk solid material that may have a tendency to build up and coat the probe. Used in bins, tanks, chutes, and spouts.

Type	Shielded Teflon Sleeved 316 SS Hanging Flexible Cable Extension	Shielded Bare 316 SS Hanging Flexible Extension	Unshielded Bare 316 SS Hanging Flexible Cable Extension
Description	The Teflon sleeved flexible cable extension was designed for high, mid, or low level when it is necessary to top mount. The flexible extension is also used in aggregates, coal or other lump materials that might damage a rigid probe or in materials that are not compatible with stainless steel. Maximum length of the cable and weighted probe end is 25 feet. The cable can be cut to length in the field.	The flexible cable extension was designed for high, mid, or low level when it is necessary to top mount. The flexible extension is also used in aggregates, coal or other lump materials that might damage a rigid probe. This flexible cable extension probe features “PRO-Shield” protection against false readings because of coating or buildup. The shielded probe also allows you to mount the probe in a standoff pipe or nozzle. Maximum length of the cable and weighted probe end is 35 feet. The cable can be cut to length in the field.	The flexible cable extension was designed for high, mid or low level detection when it is necessary to top mount. The flexible extension is also used in aggregates, coal or other lump materials that might damage a rigid probe. Maximum length of the cable and weighted probe end is 35 feet. The cable can be cut to length in the field.
Max Temp	500ºF (260ºC)	250ºF (121ºC), Standard probe	250ºF (121ºC), Standard probe, 500ºF (260ºC), High temp probe
Max Pressure	50 psi (3.5 kg/cm2 ), 1-1/4” NPT, 500 psi (35 kg/cm2 ), 3/4” NPT	50 psi (3.5 kg/cm2 ), 1-1/4” NPT, 500 psi (35 kg/cm2 ), 3/4” NPT	50 psi (3.5 kg/cm2 ), 1-1/4” NPT, 500 psi (35 kg/cm2 ), 3/4” NPT
Probe Material	316 stainless steel, 1/4” diameter cable with Teflon sleeve and insulator	316 stainless steel, 1/4” diameter cable with Delrin insulator	Standard probe, 316 stainless steel, 1/4” diameter cable with Delrin insulator, High temp probe, 316 stainless steel 1/4” diameter cable with Teflon insulator
Lengths	16 inches to 25 feet	16 inches to 35 feet	16 inches to 35 feet
Fitting Options	3/4” NPT, 1-1/4” NPT, 1” food grade, 1”/2”/3”/4” 150#, Raised face flanges	3/4” NPT, 1-1/4” NPT, 1” food grade, 1”/2”/3”/4” 150#, Raised face flanges	3/4” NPT, 1-1/4” NPT, 1” food grade, 1”/2”/3”/4” 150#, Raised face flanges
Power Pac Option	PROCAP I & II, PROCAP IX & IIX, PRO Remote, PRO Auto-Ca	PROCAP I & II, PRO Remote, PRO Auto-Cal	PROCAP I & II, PRO Remote, PRO Auto-Cal
Applications	Point level detection and process control for various solid, liquid and slurry applications when top-mounting. This Teflon sleeved probe should be used in applications where conductive material may leave residue on the probe (most liquids for instance). Note: Any conductive residue which builds up from the vessel wall to the active portion of any unsleeved bare probe will short out the two conductors.	Point level detection and process control for various solid, liquid and slurry applications when top mounting.	Point level detection and process control for various solid, liquid and slurry applications when top mounting.

Type	Unshielded Delrin/Teflon Sleeved Probe	Stubby Unshielded Delrin/Teflon Sleeved Probe	Unshielded Bare Stainless Steel Probe
Description	The unshielded fully insulated Delrin/Teflon sleeved probe was designed to be a lower cost, yet versatile probe. This all-purpose probe works reliably in bulk solids, powders, slurries, and liquids. It has a rugged, solid 5/8” diameter 316 SS probe.	The stubby unshielded probe is designed for minimal insertion into pipes, small hoppers, and in vessels where excessive buildup is not present. Also designed for low level applications where minimal insertion is preferred due to restricted areas or excessive weight that could damage a longer probe.	An unshielded probe whose length can be modified in the field. It can be cut back to 3 inches or extended to 8 feet. The probe will work reliably in a variety of powders and dry bulk solid materials.
Max Temp	Delrin sleeved, 250ºF (121ºC), Teflon sleeved 500ºF (260ºC)	Delrin sleeved, 250ºF (121ºC), Teflon sleeved 500ºF (260ºC)	250ºF (121ºC), Standard probe, 500ºF (260ºC), High temp probe
Max Pressure	50 psi (3.5 kg/cm2 ), 1-1/4” NPT, 500 psi (35 kg/cm2 ), 3/4” NPT	50 psi (3.5 kg/cm2 ), 1-1/4” NPT, 500 psi (35 kg/cm2 ), 3/4” NPT	50 psi (3.5 kg/cm2 ), 1-1/4” NPT, 500 psi (35 kg/cm2 ), 3/4” NPT
Probe Material	5/8” diameter 316 SS, Delrin or Teflon sleeved	5/8” diameter 316 SS, Delrin or Teflon sleeved	Standard probe, 5/8” diameter, 316 SS/bare with Delrin insulator,High temp probe, 5/8” diameter 316 SS/bare with Teflon insulator
Lengths	10.63”, 18”, 24”, 30”, 36”, 48”, and custom	4”	3”, 4”, 6”, 10.19”, 18”, 24”, 30”, 36”, 48”, 72”, 96”, and custom
Fitting Options	3/4” NPT, 1-1/4” NPT, 1” food grade, 1”/2”/3”/4” 150#, Raised face flanges	3/4” NPT, 1-1/4” NPT, 1” food grade, 1”/2”/3”/4” 150#, Raised face flanges	3/4” NPT, 1-1/4” NPT, 1” food grade, 1”/2”/3”/4” 150#, Raised face flanges
Power Pac Option	PROCAP I & II, PROCAP IX & IIX, PRO Remote, PRO Auto-Cal	PROCAP I & II, PRO Remote, PRO Auto-Cal	PROCAP I & II, PRO Remote, PRO Auto-Cal
Applications	Point level detection and process control for solid, liquid and slurry materials. When working with powders and bulk solids, this probe works best if top mounted or side mounted in vessels with free-flowing material where excessive sidewall buildup is not present. Used in bins, tanks, chutes, and spouts.	Designed for minimal insertion into pipes, small hoppers, vessels, or other restricted areas.	Point level detection and process control for powder and dry bulk solids. This probe works best when top mounted or side mounted in vessels with free-flowing dry material where excessive sidewall buildup is not present. Used in bins, tanks, chutes, and spouts.

Type	Shielded Bare Stainless Steel/ Ceramic High Temperature Probe	FI Fitting	Stainless Steel or Galvanized Lag
Description	The high temperature PRO Remote capacitance probe is a heavy duty probe designed for applications that exceed 500ºF (260ºC). A stainless steel probe with ceramic inserts protects the probe from heat; remote electronics can be located up to 20 feet from the probe.	The PROCAP FI stainless steel fitting is used to extend the probe 3-5/8” beyond the vessel wall to get past excessive buildup or through a thick wall. It can also be used to lag the electronics away from a heat source or clear external insulation. The extended lag fitting works with bare and Delrin sleeved probes.	The lagged probe fitting is used to extend the probe up to 2 feet through thick vessel walls or double-walled hoppers and bins. It can be used to lag the electronics away from a heat source or to clear external insulation. Available in stainless steel or galvanized pipe.
Max Temp	1000ºF (538ºC)	Delrin sleeved/Bare, 250ºF (121ºC)	Delrin sleeved, 250ºF (121ºC), Teflon sleeved, 500ºF (260ºC)
Max Pressure	100 psi (3.5 kg/cm2 )	50 psi (3.5 kg/cm2 ), 1-1/4” NPT, 500 psi (35 kg/cm2 ), 3/4” NPT	50 psi (3.5 kg/cm2 ), 1-1/4” NPT, 500 psi (35 kg/cm2 ), 3/4” NPT
Probe Material	1-1/8” diameter 316 SS with ceramic inserts	Fitting material: 316 SS	N/A
Lengths	: 9” (230 mm)	N/A	6” to 24”
Fitting Options	1-1/4” NPT	3/4” NPT to lag out, 1-1/4” NPT to lag in	3/4” NPT to lag out, 1-1/4” NPT to lag in
Power Pac Option	Remote electronics only	PROCAP I & II, PRO Remote, PRO Auto-Cal with all Delrin sleeved, bare, and flexible probes	PROCAP I & II, PRO Remote, PRO Auto-Cal with all Delrin sleeved, bare, and flexible probes
Applications	Point level detection and process control for solid, liquid and slurry materials. Used in bins, tanks, chutes, and spouts	Point level detection and process control for solid, liquid and slurry materials. Used in bins, tanks, chutes, and spouts.	Point level detection and process control for solid, liquid and slurry materials. Used in bins, tanks, chutes, and spouts.