Quick Links - Alpha Controls & Instrumentation Inc.
Social media
Contact information
Address
361 Steelcase Road West
Unit 6
Markham, ON L3R3V8 - Canada
Phone
(905) 477-2133
Fax
(905) 477-4219
361 Steelcase Road West
Unit 6
Markham, ON L3R3V8 - Canada
(905) 477-2133
(905) 477-4219
Cost effective solution that offers an excellent price to performance ratio and meets the requirements in all typical HVAC applications
Excellent accuracy and long-term stability in critical installations, 3 year warranty
Offers exceptional ±0.25% FS accuracy with pressure ranges from 1 PSI up to 10,000 PSI to meet a multitude of demanding applications
Offers exceptional ±0.13% FS accuracy for pressure ranges as low as 25 PSI up to 10,000 PSI
Highest accuracy solution for monitoring differential pressure in wet-to-wet applications
Most rugged and reliable sensors available, NEMA 4/IP65
Integral explosion-proof and weatherproof housing, easily accessible electrical connection, light and compact
Most rugged, accurate, highly configurable low differential pressure transducer on the market
Highest accuracy solution for monitoring differential pressure in critical environments
Versatile low differential pressure gage, choice of 81 models and 27 options, indicates air or noncorrosive gas pressures
Standard & Heavy Duty Industrial OEM Pressure Transducers
Powerful twin-cylinders can handle the toughest demands to quickly, quietly, and effortlessly recover virtually any refrigerant
Designed for HVAC, cost effective, accurate solution for measuring relative air humidity and temperature
High accuracy and long term stability, Analogue, Modbus RTU or BACnet output, passive temperature output
Measures a wide range of pressures to a very high accuracy and features a display resolution to 0.001 and adjustable auto power off
Measures and logs pressure measurements for critical applications, 0.05% accuracy, data logging function can store up to 10,742 readings
Offered in 12”, 24” and 36” lengths, the Patrol Flex is the most accurate Rogowski Coil in submetering
Industry's smallest split core current switch, features an integrated mounting flange with DIN-rail capability
Can easily be clamped onto existing power cables or wires, 135 Amp or 200 Amp output and very low fixed or adjustable setpoints
Ideal for new installations and provide the greatest savings opportunity, switches have accurate, very low fixed or user adjustable setpoints
Combine accurate magnetic current sensing with signal conditioning electronics, available in either 24 VDC loop power or self-powered
Stand-alone calibration standard for differential and gauge pressure sensors found in critical environments
Ideal instrument for temperature measurements, interchangeable Pt100 probes,
Cost-effective, high-precision and stable transmitter for measuring air velocity and temperature
Eliminates installers exposure to arc-flash hazard while providing a low cost, fast and accurate method of setting the proper current set point
Designed to monitor velocity while also giving the user the option to measure and display flow, differential pressure, temperature and humidity
High ± 0.25% or ± 0.5% full-scale accuracy, 4 digit digital display, auto shut off and battery powered that lasts up to 2000 hrs
Visual monitoring and electronic control of very low differential pressure with an easy-to-read gage in durable and rugged housing
Economical gage with selectable engineering units and with 1% or 0.5% accuracy for monitoring air and compatible gases or liquids
Visual monitoring and electronic control of very low differential pressure in hazardous locations, ATEX housing is flame & explosion proof
Versatile, highly repeatable pressure switches, measures and controls positive, negative or differential pressures of air and compatible gases
Indicate positive, negative or differential pressures and is accurate within 2%, high impact strength and high temperature rated
Measures positive, negative, or differential pressures of air and natural gases with a large, easy-to-read LCD
± 1.5% FS accuracy, constructed of an extruded aluminum case for exceptional durability, one button auto-zero function
Available with pressure, flow, and velocity measurements, built-in air velocity and flow calculations, adjustable zero and span values
Versatile, handheld, battery operated manometers, up to 0.5% accuracy, backlight for use in dim areas
Hand-held & battery operated manometers, ranges from 0 in W.C. - 20 in W.C. up to 100 PSI, memory function allows storage of up to 40 readings
Duct/immersion temperature sensor, passive or active output, measuring ranges up to 150°C (302°F)
Strap-on sensors are used for temperature measurement around ducts and pipes, passive or active outputs
Wall mounted for indoor and outdoor use, passive or active outputs, measuring range of -40°C - 70°C (-40°F - 158°F)
Temperature sensor with remote probe, passive or active outputs, temp ranges up to 105°C (221°F), ± 0.3°C (± 0.54°F) accuracy
Wall mount units, passive or active outputs, measures up to 50°C (122°F), ± 0.3°C (± 0.54°F) accuracy
3-in-1 instrument possessing a digital display gage, control relay switches, and a transmitter with current output
NEMA 4 housing with large & bright LCD, detachable terminal blocks reduce wiring difficulties
3 in 1 instrument possessing a digital display gage, control relay switches, and a transmitter with current output and a power usage of 120/220 VAC or 24 VDC
Combines high accuracy, compactness, dependability, and low cost in an easy-to-read instrument that can safely operate at total pressures up to 30 PSIG
Monitor the pressure of air and compatible gases, models factory calibrated to different ranges, 4-digit LCD display
Measures pressure drop, over-range protection rated to 3000 PSIG or 6000 PSIG; contains piston sensing element
Designed for determining the state of an inline filter and features quick installation with a simple, easy to understand indicator
Measures and controls positive, negative, or differential pressures of non-combustible and non-corrosive gases, and includes visible switch status LED
_Photohelic_SwitchGage_02417_th.png)
Highly repeatable differential pressure switch with a large easy-to-read analog pressure gage, easily adjustable switch setting,
Highly repeatable pressure switches combined with a precise pressure gage, encapsulated sensing element, easy to adjust set point indicators
Small size and low price with 2% repeatability, wide range of models from 0.07 in W.C. - 85 in W.C.
Advanced design, precision construction, compact size, and repeatability; with set points from 0.07 in W.C. to 20 in W.C.
Diaphragm sealed leak proof construction provide high reliability repetitive accuracy within ± 1%
Visual set point adjustment in 5 standard ranges (0.05 in W.C. - 12 in W.C.) with repetitive accuracy within ± 1%
Visual set point adjustment, adjustable null zone, and functions as a null switch
± 1% of full scale repeatability, clear easy-to-read scale with convenient external setpoint adjustment
Designed with a double diaphragm, low cost with a minimum 20 million cycle life expectancy and an extremely fast response time
Field adjustable set point, gold inlay contacts, small and lightweight for applications where space is constrained
Offers field adjustments and can handle system pressures up to 6000 PSIG
Designed for pressure, vacuum, and differential pressures, settings from 0.08 in W.C. - 20 in W.C., and dual scale field adjustable set point knob in a compact and low-cost instrument
High static pressure rating of 200 PSIG, low differential set points, NEMA 4X weatherproof enclosure
Wireless, measures differential pressure, air velocity, and flow from 50 ft away
Provides highly accurate positive, negative, or differential pressure readings without the need for moving parts, hidden wells, or packing glands
Clear shatterproof indicating tube, reads 0 to 16 in w.c. as a U-tube and -0.20 to 0 to 2.6 in w.c. as an inclined gage
Safety traps to prevent loss of fluid, easy roll up for transport and storage
Precision machined, virtually unbreakable and free of distortion, suitable for use in ambient temperatures of -20°F - 150°F
3% accuracy for stationary and portable applications, inclined and inclined-vertical types, and can be mounted on any vertical surface
Suitable for total pressures up to 100 PSIG and temperatures up to 150°F, with an accuracy of ± 2% of full scale
Inclined range bore has a length of 20 in, accuracy to ± 0.25%, and parallax-free reading
Measure positive, negative and differential pressures up to 100 PSI with a durable, long-lasting plastic construction that is easily accessible for cleaning
Dual English/metric scales with ± 1.6% full scale accuracy, can withstand ambient temperatures up to 149°F and process temperatures to 248°F
1.5% full scale accuracy in a 2.5 in gage, performance and accuracy for pressure & vacuum applications up to 160 in W.C.
Stainless steel housing and wetted parts, ranges of vacuum, compound and pressures to 235 in W.C.
Direct drive design with single moving part, single element sensing, 4-1/2 in turret mount gage
Designed for measurements of low pressures of gases and liquids, 1% full scale accuracy, available in 2-1/2 in dial
Combination pressure/temperatuer gage, available in three different connection options, simplified installation
Perfect for applications where resistance to corrosion is necessary as the stainless steel case and ring offer protection from harsh processes
2.5% accuracy, dual PSI and Bar (x100 kPa) scales, designed with 304 SS housings and 316 SS wetted parts, ranges from full vacuum to 300 psi
Dual PSI and Bar (x100 kPa) scales with ± 1.5% full-scale accuracy, stainless steel housing and wetted parts
Wide variety of ranges, easy-open breather plug on top, 1.5% FS accuracy
1.5 in dials with back connection, dual psi and bar scales with ± 2.5% accuracy, wide offering of ranges available
Can withstand ambient temperatures up to 140°F, wide variety of ranges available, dual scale & compact size
Higher accuracy gage for value-sensitive applications, back or bottom mounting and compact size, 2.5% accuracy
Simplified installation, comes in three different connection options, moveable dial with coloured markings
Large 4.5 in scale, PSI scales with 1% full scale accuracy, stainless steel housing and brass wetted parts
Pressure applications from 10 in. W.C. to 10 PSI, dual scales with 3-2-3% full-scale accuracy on a 2.5 in dial
Versatile multi-function process gage, 0.25% full scale accuracy, standard with a loop-powered 4 - 20 mA transmitter output
± 0.25% full scale accuracy, 4 digit digital display, extruded aluminum case designed to meet NEMA 4X
Complete pressure gage with calibration capabilities, 0.05% full scale accuracy & large 5 digit resolution, 11 selectable pressure units
Reads tire pressure quickly and accurately, ± 1% FS accuracy, one button operation
Measures gas pressure with ± 0.5% of full-scale accuracy, designed for easy installation, user selectable units
Rugged weatherproof design, 4-digit backlit display with four selectable units, 304L stainless steel wetted material
Customers say the extremely high sensitivity and great repeatability make this the best pressure switch ever made
Weatherproof and explosion-proof, burst pressure protection to 3000 PSI, visible set-point and deadband adjustments
High over-pressure protection with a pressure range to 1400 PSI, visible setpoint, and fixed deadband
Explosion proof and weatherproof housing, independant piston action design, mountable in any position
Visible set point and external adjustment, available in weatherproof and explosion-proof housing
Advanced design and precision construction, visible set point and easy to wire SPDT snap switch, vibration resistant
Field adjustable with simple indicating pointer, vacuum and pressure ranges, stainless steel construction
15 A SPDT switch for direct control of pumps and motors, pressure, vacuum, or compound ranges available
Minimum life expectancy of 10 million cycles, extremely fast response time, adjustable set point
Equipped with high proof pressure capabilities, available with either spade terminals or flying leads
Wide range of field adjustable pressure set point options, easy to install and easy to adjust, life of over 10 million cycles
Set point and deadband are easily adjustable, can be mounted in any orientation, simple & reliable
Rugged construction and explosion-proof design, high over-pressure protection and vibration resistance
Low cost and precision made of 316 SS and fluorocarbon ensure great chemical compatibility for a wide range of OEM industrial applications
2 switches, indicating gage and transmitter with two line display and external programming buttons
High measurement accuracy, high shock and vibration resistance, 6 user selectable pressure units
2.3 in LED segments are available in red, green, or blue, universal power supply and user selectable process inputs
Built-in excitation power supply, load cell and potentiometer input, 1/8 DIN
Input availability for virtually all types of process measurement, flexibility and value in a standard 1/8 DIN package
3-1/2 digit LCD display, user-selectable engineering units, snap-in bezel mount and 24 VDC power supply
4-1/2 digit LCD display, field-selectable engineering units, decimal point positions
3-1/2 digit, high contrast LCD, jumper selectable engineering units and decimal point positions
Flow ranges up to 1000 L/min and offered in aluminum or 316 SS in 1/4 in, 3/8 in, 1/2 in and 3/4 in sizes
PPS body, 0 - 5 VDC output, 3-1/2 digit LCD, turbine wheel and electro-optical detection
PPS body, turbine wheel and electro-optical detection, 0 - 5 VDC output signal, pulse outputs
3-1/2 digit LCD informs the user of the actual flow rate, 316SS Body, 0 - 5 VDC output
Rugged 316SS body, high repeatability & microturbine design, 0 - 5 VDC and pulse outputs
PPS body, 0 - 5 VDC output, 3-1/2 digit LCD informs the user of the actual flow rate
Corrosion resistant PPS body, accurate measurement of flow rates with zero drift, 0 - 5 VDC output, no required maintenance
Local flow indication, unrestricted mounting, 4 - 20 mA, 0 - 5 V, and 1 5 V output
Easily programmable digital display, constructed of high-grade materials and is virtually maintenance free
Economical flow indication, multiple sensing point measurement & built in averaging capability
Batch or cumulative totals, easy-to-read LCD display, ± 5% accuracy
Magnetically actuated switching design, leak proof body, operating pressures up to 150 PSIG with temperatures to 212°F
Dependable protection against flow variation or stopping in pipelines for fluids, gases, and flowing solids
Weather proof & explosion proof, easy intallation, features a free swinging vane
Simple field switch adjustment, magnetically actuated switch design, cost effective, and leak proof body
Alluminum weatherproof housing, field adjustable set point and paddle, adjustable to fit 1 in - 8 in size pipe
NEMA 4X design, features a free swinging vane and magnetic linkage; UL approved
Flow rates from 0.10 GPM - 1.5 GPM, piston-type operation, fixed setpoints
Ideal for air and post-filtered water applicatoins, with fixed set point; FDA compliant
Weatherproof and subermersible, multiple wetted material choices, available in brass or 316 SS body
Non-invasive pipe flow measurement, compact and lightweight design, 4 - 20 mA and pulse output capabilities and easy operation
Easy operation and data logging option, sturdy IP65 rating, 4 - 20 mA and pulse output capabilities
Portable and non-invasive, capable of 20 hours continuous operation with built-in, rechargeable battery
Portable high-performance data logging capability that is capable of 20 hours of continuous operation
All in one clamp-on unit, easy to read text with backlight, volume pulse and 4 - 20 mA flow rate output
Combustion analyzer that measures O2., CO2., temperature, and pressure using innovative Tune-Rite software
Entry-level, easy-to-use combustion analyzer that measures O2, CO as well as stack and air temperature
Advanced CO and temperature monitor in ambient air or gas stacks
Industrial-grade efficiency and environmental analyzer measures seven gases simultaneously, as well as pressure, air and stack temperature
Low-profile refrigerant detector provides continuous monitoring in occupied spaces for refrigerants with audio and visual alarms
Utilizes any combination of four sensor technologies for unparalleled detection capability
HVAC transmitters for relative humidity, temperature and dew point with ±2.0 %rh / 0.3 K system accuracy
Differential, 8 selectable ranges and 3 selectable outputs, easily adjustable on the job with a flip of a switch or jumper
Wet-to-wet differential pressure transducer offering an all-in-one device with field selectable pressure ranges and analog outputs
Compact air velocity probe for HVAC applications, measuring range up to 20 m/s (4000 ft/min)
3 in 1 duct mounted transmitter (CO2, humidity, temperature),E+E dual wavelength NDIR CO2 working principle, measuring range up to 10,000 ppm
Sensor element is robust and insensitive to pollution, designed for building automation and ventilation applications
Accurately measures CO2, temperature and relative humidity in HVAC applications
Industries first multi-configurable, wet-to-wet differential pressure transducer utilizing remote sensors
Non-dispersive infrared technology (NDIR), measuring ranges up to 5000 ppm, auto-calibration
Designed for customers who require high performance, reliability and versatility in harsh applications
High accuracy, field selectable ranges, low-cost solution for local indication of air flow
Pocket wind meter measures wind speeds up to 65 mph as well as temperature
Amp clamp for HVAC, general electrical, or motor testing applications with AC current
Fast-responding, feature-packed, go-to clamp meter with a complete range of measuring functions for both HVAC and electrical applications
Measures wind speed, wind chill, and temperature, features a data hold button and a 5 minute automatic shut-off to conserve battery life
Industries first low differential multi-range sensor designed for critical environments
Wall mount, duct mount and outside air humidity sensor, removable sensor tip
Low-cost, direct reading instrument to measure air velocity and static pressure in dirty air flow applications
Low cost, direct reading scales offer 3% accuracy; for portable or stationary applications
Two scales for maximum accuracy and easy, direct reading with the ability to use anywhere
Use this sensitive Dwyer unit to measure low air velocities at a low cost
Remote probe construction allows for remotely mounting the electronic enclosure for easier accessibility
Optimized for outdoor and meteorological applications
Dedicated for accurate and long term stable measurement under continuous high humidity (>85 % RH) and condensing conditions in demanding climate control
± 5% or ± 8% full scale accuracy, NEMA 6 (IP67) enclosure rating; two sensing elements
Models are available in 3% and 5% accuracy, field selectable ranges, optional integral display & BACnet MS/TP or Modbus® RTU/ASCII communication protocols
Designed for HVAC, cost-effective, highly accurate, certified BACnet MS/TP or Modbus RTU
Designed for HVAC applications, IP65/NEMA 4 compact enclosure, outstanding price/performance ratio
Detects the danger of condensation on pipes, ducts and other surfaces before condensation actually occurs
Versatile transmitter for monitoring pressure and air velocity, field upgradeable LCD display, magnetic sensing technology
Designed to measure pressures as low as 0.1 in w.c. with ±0.4% accuracy, features 15 psid overpressure
4 - 20 mA process output, a robust NEMA 4X enclosure, large LCD display, and password protected set up menu
Very low ranges with exceptional stability, reliability, and either a ± 0.25% or ± 0.5% accuracy
30 field selectable variations in just 3 models, unidirectional and bidirectional pressure ranges, with optional LCD display
Quick response capacitance sensor delivers a 4 - 20 mA output signal and ± 0.25% accuracy
Senses the pressure of air and compatible gases, standard 4 - 20 mA or 0 - 10 VDC output signal, several units can be mounted closely together
Capable of measuring low pressures with a ± 1% accuracy while withstanding up to 10 PSIG of overpressure with no damage
Positive, negative and differential pressures can be measured within a full span accuracy of ± 0.25, NEMA 4X enclosure
Ultra thin silicon diaphragm, high accuracy at low pressure ranges, NEMA 4X enclosure
Measuring pressures of liquids, gases, and vapors with a 0.5% F.S. accuracy, a 4 - 20 mA output, and a NEMA 4X enclosure
Monitors differential pressure of air and compatible gases and liquids with accuracy, easily accessible zero and range adjustments
Temperature compensated units, provides a 4 - 20 mA output signal which can be interfaced with chart recorders, data loggers, and more
Wide range of models are available factory calibrated to specific ranges, tamper proof button configuration, easy to read LCD
Measures the pressures and flow of air or non-conducting gases at high resolutions, ± 0.25% or ± 0.5% FS accuracy, ranges down to 0.1 in W.C.
Designed for high static/low DP applications, high performance of 0.25% accuracy, 6-point NIST certificate of calibration
Senses very low pressures of air and non-combustible, compatible gases, specific factory calibrated ranges, NEMA 4 X enclosure
Microprocessor-based high performance transmitter, push button configuration, programmable using HART® communication
Simple calibration push-button sets back zero and span, ± 0.25, ± 1, or ± 2% accuracy
Wide range of models are available factory calibrated to 0.25% full scale accuracy, ranges from 0.1 in W.C. - 25 in W.C.
Push-activated zero function and an associated LED light indicator, 2-wire, 4 - 20 mA output
Flexible pressure calibration, push button configuration, automatic sensor temperature compensation, zero and span buttons
Monitors pressure, air velocity, & air flow, field selectable ranges and output signal, plug-in remote display tool
Compact and lightweight, ± 0.8% FS accuracy, can withstand up to 15 PSIG overpressure with no damage to the unit
Monitors differential pressure of air and compatible gases and liquids with 0.5% accuracy, dual pressure sensors, zero adjust button
Complete system including a backlit RGB LCD display with a graphic user interface, audible and visual alarm
Multi-circuit power meter for monitoring multiple electrical circuits or for current-only monitoring of branch circuits
