Instrumentation, Measurement and Control - Bindicator
Instrumentation refers to devices that measure or control physical variables such as temperature, level, flow, or pressure. These products are essential in the industry because they allow for maximum output with mi...
Categories from Bindicator (4)
Level Control Dry Products
What is the role of level control systems in managing dry bulk products?
Level control for dry products provides accurate monitoring of material levels in bins, silos, and hoppers to make sure of efficient operations and minimize waste. Versatile devices, including rotary paddle switches, vibrating rods, capacitance probes, and radar sensors, cater to different applications and are built to withstand harsh environments, providing long-lasting performance. These devices feature user-friendly designs for quick integration, reducing downtime and installation costs. Advanced sensors ensure precise level measurement, maintaining optimal inventory levels, while low maintenance requirements save time and operational costs.
What Devices Are Common for Dry Bulk Level Control?
Common devices for dry bulk level control include:
- Rotary Paddle Switches: Detect bulk materials by halting rotation when the material reaches the paddle.
- Vibrating Rod Sensors: Detect material presence by using vibration and are suitable for various bulk materials.
- Capacitance Probes: Measure changes in capacitance caused by material presence.
- Radar Sensors: Provide non-contact, continuous level measurement, making them ideal for dusty environments.
What are the Benefits of Advanced Level Control Solutions?
The benefits of advanced level control solutions include:
- Enhanced operational efficiency, optimizing production processes, reducing downtime, and increasing output.
- Cost savings by preventing overfilling and material shortages, all while reducing waste and operational costs.
- Reliable level measurement for safe storage and handling of materials, preventing spills and accidents.
- Real-time monitoring to help maintain optimal inventory levels, improving supply chain efficiency.
Related categories: Bulk Solids | Load Cells & Scales | Radar
Level Control
Level control is essential for many industrial and commercial applications, ranging from simple water tanks to complex chemical processing systems. Industrial applications often require control to maintain safe and efficient operations. This can be accomplished through the use of float switches or differential pressure control. Float switches are devices used to measure the level of a liquid in a tank. They work by using a float that is attached to a switch. When the float rises or falls with the level of the liquid, the switch is activated. This can then be used to trigger an alarm or shut off a pump. Differential pressure control is another level control method that uses pressure sensors to measure the difference in pressure between two points. This can be used to determine the liquid level in a tank. Differential pressure control is often used in applications requiring precise level control. We carry a complete selection of level-control products to meet your needs. Our float switches are ideal for small-scale applications, while our radar and differential pressure control systems are designed for more demanding environments. We also offer load cells for use in weight-based level measurement. Whether you need a simple float switch or a sophisticated differential pressure system, we have your level control products.
Shop by type: Bulk Solids | Liquid Level
Related categories: Instrumentation, Measurement and Control | Temperature Measurement, Instrumentation and Control | Analytical Tools | PVF | Sensors
Bulk Solids
Measuring bulk solids such as grain, cement, plastic pellets, powders and aggregates is very different from measuring liquids. Material can bridge, rat-hole, pile at an angle or coat sensors, so level control for silos, bins and hoppers needs technology built for dry products.
Bulk Solids Level Technologies
- Mechanical point level switches – rotary paddles and tilt switches for high and low alarms
- Radar transmitters – continuous non-contact level through dust
- RF admittance probes – reliable point level in sticky materials
- Load cells and scales – measure inventory by weight
- Vibrating and capacitance sensors – for powders and light materials
Choosing a Solution
Consider bulk density, particle size, dust, temperature, vessel height and whether you need point alarms or continuous inventory. Many silos use both, with continuous radar for inventory and a mechanical switch for high-level backup. Dust-ignition-proof ratings may be required.
Centro can help you choose bulk solids level control that works with your material and vessels.
Shop by type: Radar | Load Cells & Scales | Level Control Dry Products
Related categories: Level Control | Liquid Level
Level Switches
Liquid level switches detect when a liquid reaches a set point in tanks, sumps and vessels. They control pumps and valves and trigger high and low alarms.
Level Switch Types
- Float switches – simple, reliable switching
- Vibrating fork switches – unaffected by foam or turbulence
- Conductivity switches – conductive liquids
- Optical switches – compact point detection
- Capacitive switches – liquids and slurries
Choosing a Switch
Consider liquid type, temperature, pressure, buildup and mounting. Use an independent high-level switch for overfill protection.
Centro supplies liquid level switches for tanks and sumps.
Related categories: Liquid Level | Level Sensors | Differential Pressure Control | Water Gauges | Radar
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The Auto-Bin is a continuous level measurement system designed for dry bulk storage vessels. It provides ongoing level monitoring and communicates the measured level to a remote display, PLC, or SCADA system via its signal output. The Auto-Bin is particularly well-suited for inventory management in large grain, feed, cement, or plastics silos where continuous knowledge of material volume is needed. Contact Bindicator for full configuration and output specifications.
$962.03
In Stock (8)Ships within 1 business day
Extend the life of your existing Roto-Bin-Dicator® installation with this direct OEM replacement motor kit. Designed and supplied by Bindicator, the kit includes the synchronous motor assembly needed to restore full functionality to a worn or failed unit. Using genuine Bindicator replacement parts ensures compatibility, maintains agency approvals, and eliminates the risk of mismatched components. No calibration or adjustment is required after installation.
$201.01
In Stock (18)Ships within 1 business day
The H-19 mounting plate is the standard side-mount interface for the Original Roto-Bin-Dicator®. The 8" diameter plate bolts or welds to the side of a bin or silo wall, and the half-coupling positions the instrument so the paddle extends into the vessel horizontally. The included H-20 gasket provides a seal between the plate and the vessel wall to prevent dust leakage. Powder-coated mild steel construction offers good durability in most industrial environments.
$61.01
In Stock (26)Ships within 1 business day
The H-192 mounting plate provides a top-mount interface for the Original Roto-Bin-Dicator®. It positions the instrument on the roof of a bin or silo with the paddle extending downward into the vessel. The full coupling allows the paddle shaft to be driven directly by the motor without a flexible coupling element. The H-20 gasket seals against dust ingress. Use with Extension 1 or 3 when a longer shaft reach is needed.
$77.01
In Stock (30)Ships within 1 business day
The H-36 neoprene flexible shaft coupling connects the Roto-Bin-Dicator® motor shaft to the paddle shaft with built-in vibration dampening and angular/parallel misalignment compensation. This coupling is strongly recommended for installations on vessels subject to mechanical vibration (e.g., pneumatic filling, attached conveyors, vibrating screens) as it significantly reduces bearing wear on the motor shaft. Rated to 170°F (77°C) maximum continuous process temperature.
$66.01
In Stock (21)Ships within 1 business day
The H-370 is the most versatile and widely used paddle for the Original Roto-Bin-Dicator®. Four 316 stainless steel vanes (1-1/2" × 5" diameter) provide reliable contact with a broad range of dry bulk materials from medium-density granules to moderately dense powders. Mounting pins allow quick installation onto the paddle shaft without tools. Supplied as a direct replacement for worn or damaged paddles, or when changing paddle type for a different material.
$64.01
In Stock (11)Ships within 1 business day
The H-371 large 4-vane paddle provides 56% more swept area than the standard H-370, making it the correct choice for materials with very low bulk densities (typically under 20 lb/ft³) that might not reliably actuate a smaller paddle. Four 316 SS vanes sweep the larger 7" diameter arc to ensure positive contact and accurate level detection in expanded plastics, fine lightweight powders, grain chaff, and similar light materials.
$66.01
In Stock (25)Ships within 1 business day
The H-379 insertable single curved vane (commonly called the 'banana' paddle) is engineered to pass through small-diameter nozzle openings and deploy inside the vessel. The curved profile reduces drag torque in free-flowing materials and prevents bridging at the vessel wall. Used in retrofit situations where the existing nozzle diameter is too small for a 4-vane paddle, or in applications requiring a very low torque paddle to prevent false actuation in light materials.
$106.01
In Stock (15)Ships within 1 business day
OEM Bindicator paddle for Roto-Bin-Dicator® series. Consult Bindicator documentation or your distributor to confirm the specific paddle geometry and application compatibility for this part number.
$101.01
Low Stock (4)Ships within 1 business day
The H-380 collapsible 2-vane paddle solves the challenge of inserting a paddle into a vessel where the nozzle or access point is too small for a rigid 4-vane paddle. The two vanes fold inward for insertion and spring open inside the vessel to their full operating diameter. 316 stainless steel construction ensures corrosion resistance and long service life. Once deployed, the paddle operates identically to a fixed-vane design.
$115.01
In Stock (9)Ships within 1 business day
The H-38 stainless steel shaft coupling provides a rigid, durable connection between the motor shaft and paddle shaft in demanding environments. 316 SS construction makes it suitable for high process temperatures (beyond the neoprene coupling's 170°F rating) and for applications involving corrosive dusts or wash-down environments. Unlike flexible couplings, the rigid SS coupling does not dampen vibration, use the neoprene H-36 where vibration isolation is needed.
$35.01
In Stock (11)Ships within 1 business day
The GP4 Yo-Yo is a plumb-bob (or yo-yo) type continuous level measurement device for dry bulk solids. On a timed cycle, the unit lowers a weighted probe on a cable until it contacts the material surface, measures the distance, and retracts the probe. The measured level is converted to a 4–20 mA or relay output signal for remote indication or process control. This design is well-suited for large silos and bins where non-contact sensors face challenges from dust, powder buildup on sensor faces, or irregular material surfaces. The LBY4-N-1-N-1-P-1-10 variant is configured for 120 VAC power with a 10-foot cable length.
Requires Quote
Available for Purchase
Subject to factory lead times
The LMR120006 4-vane Nylon paddle is the standard paddle for the Mini Roto-Bin-Dicator® in most dry bulk applications. Injection-molded Nylon provides excellent impact resistance, chemical resistance to most industrial dusts, and a long service life. The 4-vane geometry is optimized for the Mini Roto's smaller form factor and adjustable sensitivity range of 5–65 lb/ft³.
$31.01
In Stock (10)Ships within 1 business day
The LMR120027 insertable food-grade paddle is manufactured from polysulfone, an FDA-acceptable material suited to direct contact with food products, nutraceuticals, and pharmaceutical powders. The insertable design allows installation through the Mini Roto's standard 3/4" NPT process connection without special tools. This paddle maintains the Mini Roto's full 5–65 lb/ft³ density range while meeting the hygiene requirements of food and pharmaceutical processing facilities.
$49.01
Low Stock (5)Ships within 1 business day
The Pulse Point II (LPII) is a compact capacitance probe point level switch designed for dry bulk powders and granules. It detects material presence or absence at the probe tip by sensing the change in capacitance when material contacts the probe. The LPII-SG variant is a straight single-point probe with a SPDT relay output. It requires simple single-point calibration with the probe in free air. Ideal for materials that are challenging for mechanical paddle switches (very fine powders, high-speed fill applications) or where a flush-mount, probe-style sensor is preferred.
$1,177.03
Available for Purchase
Subject to factory lead times
The Mini Roto-Bin-Dicator® packs the reliability of the full-size Roto-Bin-Dicator® into a compact, lightweight injection-molded Minlon® housing sized for small bins, hoppers, and spaces where standard equipment won't fit. The adjustable sensitivity feature allows a single unit to be used across a wide range of material densities, from very light powders at 5 lb/ft³ up to denser granules at 65 lb/ft³, without changing paddles or hardware. The unit can be mounted horizontally for side mounting or vertically for top mounting, and serves equally well as a high, intermediate, or low level indicator. LED status indication provides at-a-glance operational status without opening the enclosure.
$447.02
Low Stock (5)Ships within 1 business day
The Bindicator Roto-Bin-Dicator PRO (Model PRO-AGAX1) is a rotary paddle level switch designed for bulk solid level detection in industrial bins, hoppers, and silos. This listing includes the power pack only; paddles and accessories are sold separately. It features a 3/4" NPT conduit entry and is approved for Ordinary Location use. The housing is constructed of powder-coated aluminum with an aluminum frame neck and 1-1/4" NPT process fitting. The unit supports universal operating power: 120–240 VAC (50/60 Hz) or 24–48 VDC. Key features include on-board diagnostics, motor pause, time delay, sensitivity adjustments, test FOB, and an optional fault output. Part of Bindicator’s trusted PRO Series, this level switch is built for reliable performance in demanding environments.
$656.02
Low Stock (2)Ships within 1 business day
This genuine Bindicator replacement kit provides both the motor assembly and mounting plate for the Roto-Bin-Dicator® PRO. Installing this kit restores the PRO's redundant detection system (shaft rotation monitoring + motor behavior monitoring) and all six diagnostic functions. The bundled kit simplifies ordering and ensures that all replaced components are matched and certified together, maintaining the unit's UL and CE agency approvals.
$202.01
Low Stock (4)Ships within 1 business day
Bindicator Roto-Bin-Dicator R-H. 120 VAC, 1 SPDT. Power Pack Only (Paddles and Accessories Purchased Seperately). Ordinary Location Approval. Housing Powder Coated Aluminum, Process Fitting Aluminum Frame Neck 1-1/4 NPT.
$466.02
In Stock (22)Ships within 1 business day
The Bindicator Roto-Bin-Dicator Kit (R-H-AX1-0DA) is one of the most widely used rotary paddle level switches for dry bulk material applications. Designed for reliability and simplicity, it requires no calibration and is built around a simple mechanical mechanism. This kit operates at 120 VAC with a single SPDT output and features a powder coated aluminum housing with a 1-1/4 NPT aluminum frame neck process fitting. It includes a single curved H-379 "banana" paddle. No mounting plate is included. The long-lasting sealed motor makes this a low-maintenance choice trusted across industries. Rated for ordinary locations with Type 4X, IP66 protection, it carries approval for use in both the US and Canada.
$577.78
Should ship between 11 Dec and 08 Jan
Subject to factory lead times
Single-relay assembly with 30° cut angled vane for compacted or bridging materials. Direct process fitting installation.
$572.78
Should ship between 11 Dec and 08 Jan
Subject to factory lead times
Bindicator Roto-Bin-Dicator R-H. 120 VAC, 1 SPDT. Centro Kit for Assembly. Ordinary Location Approval. Housing Powder Coated Aluminum, Process Fitting Aluminum Frame Neck 1-1/4 NPT. With: Mounting Plate H-192 (Top Of Bin / Silo Mount), Standard 4-Vane Paddle H-370 1-1/2 x 5, Full Coupling
$647.80$727.00
Should ship between 11 Dec and 08 Jan
Subject to factory lead times
Bindicator Roto-Bin-Dicator R-H. 120 VAC, 1 SPDT. Centro Kit for Assembly. Ordinary Location Approval. Housing Powder Coated Aluminum, Process Fitting Aluminum Frame Neck 1-1/4 NPT. With: Mounting Plate H-192 (Top Of Bin / Silo Mount), Large 4-Vane Paddle H-371 2 x 7, Full Coupling
$649.80$730.00
Should ship between 11 Dec and 08 Jan
Subject to factory lead times
Bindicator Roto-Bin-Dicator R-H. 120 VAC, 1 SPDT. Centro Kit for Assembly. Ordinary Location Approval. Housing Powder Coated Aluminum, Process Fitting Aluminum Frame Neck 1-1/4 NPT. With: Mounting Plate H-19 (Side of Bin / Silo Mount), Standard 4-Vane Paddle H-370 1-1/2 x 5, No Coupling
$596.79
Should ship between 11 Dec and 08 Jan
Subject to factory lead times
The Auto-Bin is a continuous level measurement system designed for dry bulk storage vessels. It provides ongoing level monitoring and communicates the measured level to a remote display, PLC, or SCADA system via its signal output. The Auto-Bin is particularly well-suited for inventory management in large grain, feed, cement, or plastics silos where continuous knowledge of material volume is needed. Contact Bindicator for full configuration and output specifications.
$962.03
In Stock (8)Ships within 1 business day
Extend the life of your existing Roto-Bin-Dicator® installation with this direct OEM replacement motor kit. Designed and supplied by Bindicator, the kit includes the synchronous motor assembly needed to restore full functionality to a worn or failed unit. Using genuine Bindicator replacement parts ensures compatibility, maintains agency approvals, and eliminates the risk of mismatched components. No calibration or adjustment is required after installation.
$201.01
In Stock (18)Ships within 1 business day
The H-19 mounting plate is the standard side-mount interface for the Original Roto-Bin-Dicator®. The 8" diameter plate bolts or welds to the side of a bin or silo wall, and the half-coupling positions the instrument so the paddle extends into the vessel horizontally. The included H-20 gasket provides a seal between the plate and the vessel wall to prevent dust leakage. Powder-coated mild steel construction offers good durability in most industrial environments.
$61.01
In Stock (26)Ships within 1 business day
The H-192 mounting plate provides a top-mount interface for the Original Roto-Bin-Dicator®. It positions the instrument on the roof of a bin or silo with the paddle extending downward into the vessel. The full coupling allows the paddle shaft to be driven directly by the motor without a flexible coupling element. The H-20 gasket seals against dust ingress. Use with Extension 1 or 3 when a longer shaft reach is needed.
$77.01
In Stock (30)Ships within 1 business day
The H-36 neoprene flexible shaft coupling connects the Roto-Bin-Dicator® motor shaft to the paddle shaft with built-in vibration dampening and angular/parallel misalignment compensation. This coupling is strongly recommended for installations on vessels subject to mechanical vibration (e.g., pneumatic filling, attached conveyors, vibrating screens) as it significantly reduces bearing wear on the motor shaft. Rated to 170°F (77°C) maximum continuous process temperature.
$66.01
In Stock (21)Ships within 1 business day
The H-370 is the most versatile and widely used paddle for the Original Roto-Bin-Dicator®. Four 316 stainless steel vanes (1-1/2" × 5" diameter) provide reliable contact with a broad range of dry bulk materials from medium-density granules to moderately dense powders. Mounting pins allow quick installation onto the paddle shaft without tools. Supplied as a direct replacement for worn or damaged paddles, or when changing paddle type for a different material.
$64.01
In Stock (11)Ships within 1 business day
The H-371 large 4-vane paddle provides 56% more swept area than the standard H-370, making it the correct choice for materials with very low bulk densities (typically under 20 lb/ft³) that might not reliably actuate a smaller paddle. Four 316 SS vanes sweep the larger 7" diameter arc to ensure positive contact and accurate level detection in expanded plastics, fine lightweight powders, grain chaff, and similar light materials.
$66.01
In Stock (25)Ships within 1 business day
The H-379 insertable single curved vane (commonly called the 'banana' paddle) is engineered to pass through small-diameter nozzle openings and deploy inside the vessel. The curved profile reduces drag torque in free-flowing materials and prevents bridging at the vessel wall. Used in retrofit situations where the existing nozzle diameter is too small for a 4-vane paddle, or in applications requiring a very low torque paddle to prevent false actuation in light materials.
$106.01
In Stock (15)Ships within 1 business day
OEM Bindicator paddle for Roto-Bin-Dicator® series. Consult Bindicator documentation or your distributor to confirm the specific paddle geometry and application compatibility for this part number.
$101.01
Low Stock (4)Ships within 1 business day
The H-380 collapsible 2-vane paddle solves the challenge of inserting a paddle into a vessel where the nozzle or access point is too small for a rigid 4-vane paddle. The two vanes fold inward for insertion and spring open inside the vessel to their full operating diameter. 316 stainless steel construction ensures corrosion resistance and long service life. Once deployed, the paddle operates identically to a fixed-vane design.
$115.01
In Stock (9)Ships within 1 business day
The H-38 stainless steel shaft coupling provides a rigid, durable connection between the motor shaft and paddle shaft in demanding environments. 316 SS construction makes it suitable for high process temperatures (beyond the neoprene coupling's 170°F rating) and for applications involving corrosive dusts or wash-down environments. Unlike flexible couplings, the rigid SS coupling does not dampen vibration, use the neoprene H-36 where vibration isolation is needed.
$35.01
In Stock (11)Ships within 1 business day
The GP4 Yo-Yo is a plumb-bob (or yo-yo) type continuous level measurement device for dry bulk solids. On a timed cycle, the unit lowers a weighted probe on a cable until it contacts the material surface, measures the distance, and retracts the probe. The measured level is converted to a 4–20 mA or relay output signal for remote indication or process control. This design is well-suited for large silos and bins where non-contact sensors face challenges from dust, powder buildup on sensor faces, or irregular material surfaces. The LBY4-N-1-N-1-P-1-10 variant is configured for 120 VAC power with a 10-foot cable length.
Requires Quote
Available for Purchase
Subject to factory lead times
The LMR120006 4-vane Nylon paddle is the standard paddle for the Mini Roto-Bin-Dicator® in most dry bulk applications. Injection-molded Nylon provides excellent impact resistance, chemical resistance to most industrial dusts, and a long service life. The 4-vane geometry is optimized for the Mini Roto's smaller form factor and adjustable sensitivity range of 5–65 lb/ft³.
$31.01
In Stock (10)Ships within 1 business day
The LMR120027 insertable food-grade paddle is manufactured from polysulfone, an FDA-acceptable material suited to direct contact with food products, nutraceuticals, and pharmaceutical powders. The insertable design allows installation through the Mini Roto's standard 3/4" NPT process connection without special tools. This paddle maintains the Mini Roto's full 5–65 lb/ft³ density range while meeting the hygiene requirements of food and pharmaceutical processing facilities.
$49.01
Low Stock (5)Ships within 1 business day
The Pulse Point II (LPII) is a compact capacitance probe point level switch designed for dry bulk powders and granules. It detects material presence or absence at the probe tip by sensing the change in capacitance when material contacts the probe. The LPII-SG variant is a straight single-point probe with a SPDT relay output. It requires simple single-point calibration with the probe in free air. Ideal for materials that are challenging for mechanical paddle switches (very fine powders, high-speed fill applications) or where a flush-mount, probe-style sensor is preferred.
$1,177.03
Available for Purchase
Subject to factory lead times
The Mini Roto-Bin-Dicator® packs the reliability of the full-size Roto-Bin-Dicator® into a compact, lightweight injection-molded Minlon® housing sized for small bins, hoppers, and spaces where standard equipment won't fit. The adjustable sensitivity feature allows a single unit to be used across a wide range of material densities, from very light powders at 5 lb/ft³ up to denser granules at 65 lb/ft³, without changing paddles or hardware. The unit can be mounted horizontally for side mounting or vertically for top mounting, and serves equally well as a high, intermediate, or low level indicator. LED status indication provides at-a-glance operational status without opening the enclosure.
$447.02
Low Stock (5)Ships within 1 business day
The Bindicator Roto-Bin-Dicator PRO (Model PRO-AGAX1) is a rotary paddle level switch designed for bulk solid level detection in industrial bins, hoppers, and silos. This listing includes the power pack only; paddles and accessories are sold separately. It features a 3/4" NPT conduit entry and is approved for Ordinary Location use. The housing is constructed of powder-coated aluminum with an aluminum frame neck and 1-1/4" NPT process fitting. The unit supports universal operating power: 120–240 VAC (50/60 Hz) or 24–48 VDC. Key features include on-board diagnostics, motor pause, time delay, sensitivity adjustments, test FOB, and an optional fault output. Part of Bindicator’s trusted PRO Series, this level switch is built for reliable performance in demanding environments.
$656.02
Low Stock (2)Ships within 1 business day
This genuine Bindicator replacement kit provides both the motor assembly and mounting plate for the Roto-Bin-Dicator® PRO. Installing this kit restores the PRO's redundant detection system (shaft rotation monitoring + motor behavior monitoring) and all six diagnostic functions. The bundled kit simplifies ordering and ensures that all replaced components are matched and certified together, maintaining the unit's UL and CE agency approvals.
$202.01
Low Stock (4)Ships within 1 business day
Bindicator Roto-Bin-Dicator R-H. 120 VAC, 1 SPDT. Power Pack Only (Paddles and Accessories Purchased Seperately). Ordinary Location Approval. Housing Powder Coated Aluminum, Process Fitting Aluminum Frame Neck 1-1/4 NPT.
$466.02
In Stock (22)Ships within 1 business day
The Bindicator Roto-Bin-Dicator Kit (R-H-AX1-0DA) is one of the most widely used rotary paddle level switches for dry bulk material applications. Designed for reliability and simplicity, it requires no calibration and is built around a simple mechanical mechanism. This kit operates at 120 VAC with a single SPDT output and features a powder coated aluminum housing with a 1-1/4 NPT aluminum frame neck process fitting. It includes a single curved H-379 "banana" paddle. No mounting plate is included. The long-lasting sealed motor makes this a low-maintenance choice trusted across industries. Rated for ordinary locations with Type 4X, IP66 protection, it carries approval for use in both the US and Canada.
$577.78
Should ship between 11 Dec and 08 Jan
Subject to factory lead times
Single-relay assembly with 30° cut angled vane for compacted or bridging materials. Direct process fitting installation.
$572.78
Should ship between 11 Dec and 08 Jan
Subject to factory lead times
Bindicator Roto-Bin-Dicator R-H. 120 VAC, 1 SPDT. Centro Kit for Assembly. Ordinary Location Approval. Housing Powder Coated Aluminum, Process Fitting Aluminum Frame Neck 1-1/4 NPT. With: Mounting Plate H-192 (Top Of Bin / Silo Mount), Standard 4-Vane Paddle H-370 1-1/2 x 5, Full Coupling
$647.80$727.00
Should ship between 11 Dec and 08 Jan
Subject to factory lead times
Bindicator Roto-Bin-Dicator R-H. 120 VAC, 1 SPDT. Centro Kit for Assembly. Ordinary Location Approval. Housing Powder Coated Aluminum, Process Fitting Aluminum Frame Neck 1-1/4 NPT. With: Mounting Plate H-192 (Top Of Bin / Silo Mount), Large 4-Vane Paddle H-371 2 x 7, Full Coupling
$649.80$730.00
Should ship between 11 Dec and 08 Jan
Subject to factory lead times
Bindicator Roto-Bin-Dicator R-H. 120 VAC, 1 SPDT. Centro Kit for Assembly. Ordinary Location Approval. Housing Powder Coated Aluminum, Process Fitting Aluminum Frame Neck 1-1/4 NPT. With: Mounting Plate H-19 (Side of Bin / Silo Mount), Standard 4-Vane Paddle H-370 1-1/2 x 5, No Coupling
$596.79
Should ship between 11 Dec and 08 Jan
Subject to factory lead times
FAQS
- Selecting the right process instrument starts with defining four things: what variable you need to measure (temperature, pressure, flow, or level), the process conditions the instrument will face (media type, temperature range, pressure range, corrosiveness, and whether the environment is hazardous), the accuracy and response time your application requires, and how the measurement data needs to be communicated (local display only, 4–20 mA signal to a PLC/DCS, or digital protocol like HART or Modbus). For temperature, the choice between thermocouples, RTDs, and infrared sensors depends on the temperature range and accuracy needed. For pressure, gauge type, range, wetted materials, and whether you need local indication or a remote transmitter signal are the key decisions. For flow, the fluid properties (conductive liquid, gas, steam, slurry) determine whether a magnetic, ultrasonic, Coriolis, vortex, or variable-area meter is the best fit. For level, vessel conditions (open vs. pressurized, clean liquid vs. foam/solids) guide the choice between float switches, ultrasonic, radar, or differential pressure technologies. Centro's instrumentation specialists can help you match the right technology to your specific process conditions and budget.
- Accurate process instrumentation is the foundation of safe, efficient, and compliant operations. Every control loop — whether it manages boiler pressure, reactor temperature, tank level, or pipeline flow — depends on instruments that provide reliable, real-time measurements. If a temperature sensor reads inaccurately, a heater may overshoot and damage the product or create a safety hazard. If a level transmitter drifts, a tank may overflow or run dry. If a flow meter is undersized, the control system cannot maintain the correct feed rate. Beyond safety and quality, accurate instrumentation directly impacts energy consumption, raw material usage, and regulatory compliance. Calibrated, properly specified instruments reduce waste, prevent unplanned shutdowns, and provide the data required for regulatory reporting and quality documentation.
- A process control loop is a system that continuously measures a process variable, compares it to a desired setpoint, and adjusts an output to keep the variable at the setpoint. The loop consists of three elements: the sensor/transmitter (measures the variable — e.g., a thermocouple measuring temperature), the controller (compares the measurement to the setpoint and calculates a corrective output — typically a PID controller), and the final control element (adjusts the process — e.g., a control valve that opens or closes to change steam flow). Instruments are the eyes and ears of the loop — without accurate, responsive sensors and transmitters, the controller cannot make correct decisions, and the process drifts out of specification. The entire loop must be properly engineered as a system — sensor accuracy, transmitter range, controller tuning, and valve sizing must all be matched to the process requirements.
- Industrial instruments communicate with controllers and PLCs using standardized electrical signals. The 4–20 mA analog current loop is the most widely used signal in process instrumentation — it transmits a variable measurement as a proportional current (4 mA = zero/low range, 20 mA = full scale), and the current-based signal is resistant to voltage drop and electrical noise over long cable runs. The 0–10 V DC voltage signal is used in some HVAC and building automation applications but is more susceptible to noise and cable length limitations. Discrete (on/off) signals — from switches, relays, and transmitter alarm contacts — indicate threshold conditions like high level, low pressure, or flow/no-flow. Digital communication protocols — HART (layered on top of 4–20 mA for configuration and diagnostics), Foundation Fieldbus, PROFIBUS PA, and IO-Link — enable bidirectional communication between the instrument and the control system for advanced diagnostics, remote configuration, and multi-variable data.
- When instruments are installed in locations classified as hazardous (areas where flammable gases, vapors, or combustible dusts may be present), they must be approved for that classification to prevent ignition. Key considerations include the area classification (Class I for gases/vapors, Class II for dusts, with Division 1 for normally present hazards and Division 2 for abnormal conditions — or Zone 0/1/2 under ATEX/IECEx), the protection method (intrinsic safety, explosion-proof, non-incendive, or purged/pressurized), and the specific gas group and temperature class. Intrinsically safe (IS) instruments — used with IS barriers in the safe area — limit energy to levels too low to cause ignition and are the most common and practical approach for low-power sensors and transmitters. Explosion-proof enclosures contain any internal explosion and are used for higher-power devices. Always verify the instrument's certification (FM, CSA, ATEX, IECEx) matches the area classification before installation.