"Alpha instruments Inc was founded in 2005, in Massachusetts, US. We specialized in the development and manufacture of low-pressure transducers, which were applied in HVAC, Critical Environments, Medical Industry, Semiconductor Equipment, etc.With our own R&D Center, we do basic research, also develop our transducers with our unique technologies. The designs of our products are based on decades of experience applied to new innovative ideas. Compared to other capacitive transducers, our extensively engineered, patented products provide better long term stability, more sensitivity, and higher over-pressure capability.Our products cover the pressure range of 0.1 inch H2O to 100 inch H2O, or 25 Pa to 25000 Pa. With our unique manufacturing techniques, we can readily produce transducers with custom pressure ranges.Alpha instruments Inc strives to provide the most advanced low-pressure transducers and bring superior Accuracy, Reliability and Value to our customers." https://www.alphainstruments.com/
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Model 175 Push Button Zero Differential Pressure Transducer
Product Description
The model 175 Series high accuracy pressure transducers/transmitters are low-range differential pressure transducers and transmitters. Each unit features a push-activated ZERO function and an associated LED lamp indicator. With a convenient pushbutton, the zero calibration can be performed without any additional equipment. It significantly reduces time and cost for users. The unique bi-color LED indicates if the transducer is at normal operation, over pressure, or in the process of zero calibration. It also reports if the unit is badly damaged.
The enclosure consists a flame retardant plastic top cover and a stainless steel bottom plate for ruggedness.
The pressure ranges from 0.1″WC to 100″WC, unidirectional or bidirectional. The output can be 3-wire 0 to 5V, 0 to 10V, or 2-wire 4 to 20 mA, fully protected against short circuiting and incorrect wiring. All units are temperature compensated. 0.6%, 0.4% and 0.25% accuracy are available.
The patented stainless steel diaphragm sensor provides good corrosion resistance, excellent repeatability and long term stability.
Key Features of Alpha 175 ultra low pressure sensor:
Green/Red Bi-Color LED to Indicate The Working Status
Push Button Zero Calibration
Up to 15 PSI Proof Pressure on all Ranges
Detachable Euro Style Terminal Block
Miswiring Full Protection
Unsymmetrical Bidirectional Pressure Ranges
True Zero Output for Voltage Unit
Specification of Alpha 175 very low differential pressure transducer:
Accuracy: ±0.25%, ±0.40% or ±0.60% of span
Differential Pressure Ranges:
Unidirectional: 0.10 in.W.C. to 100.00 in.W.C.
Bidirectional: ±0.10 in.W.C. to ±50.00 in.W.C.
NEMA 1; ABS enclosure
Mounting: surface mount
Output signal: current or voltage
Process Applications of Alpha 175 very low pressure sensor:
HVAC and VAV Control
Clean Room and Isolation Rooms
Duct Static Pressure Measurement
Draft Control and Fume Hood Control
Furnace Air Flow Control
Power Plant Air Flow Monitor and Control
https://www.alphainstruments.com/product/model-175-differential-pressure-transmitter/
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Model 168 intrinsically safe Differential Pressure Transducer
Product Description
Model 168 series intrinsically safe pressure transducers are low range differential pressure transducers and transmitters with NEMA 4 (IP-65) rated aluminum enclosures. They are very rugged and very reliable, good for many industrial applications.
The pressure range covers from 0.1″WC to 100″WC, unidirectional or bidirectional. The output can be 3-wire 0 to 5V, 0 to 10V, or 2-wire 4 to 20 mA, fully protected against short circuit and incorrect wiring. In the voltage version, the output can go down to true zero. The units are temperature compensated. The accuracy can be 0.6%, 0.4% or 0.25% at room temperature.
The patented stainless steel intrinsically safe pressure sensor provides good corrosion resistance, excellent performance and long term stability.
Our unique production setup can also make special pressure range (e.g. -0.5″WC to +3.5″WC) to meet special applications.
Key Features of Alpha 168 intrinsically safe pressure transducer:
Up to 15 PSI Proof Pressure on all Ranges
Miswiring Full Protection
Unsymmetrical Bidirectional Pressure Ranges
True Zero Output for Voltage Unit
Key Features of Alpha 168 intrinsically safe pressure transducer:
Accuracy: ±0.25%, ±0.40% or ±0.60% of span
Differential Pressure Ranges:
Unidirectional: 0.10 in.W.C. to 100.00 in.W.C.
Bidirectional: ±0.10 in.W.C. to ±50.00 in.W.C.
NEMA 4/IP65; Die-cast aluminum
Mounting: surface mount
Output signal: current or voltage
Process Applications of Alpha 168 intrinsically safe pressure sensor:
HVAC and VAV Control
Clean Room and Isolation Rooms
Duct Static Pressure Measurement
Draft Control and Fume Hood Control
Furnace Air Flow Control
Power Plant Air Flow Monitor and Control
https://www.alphainstruments.com/product/model-168-differential-pressure-transmitter/
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Model 167 DIN Rail Mount Differential Pressure Transducer
Product Description
Model 167 series negative pressure sensors are low range differential pressure transducers and transmitters. It was specially designed for 35mm DIN Rail Mount, which dramatically reduces the required mounting space and installation cost. The green and red LED indicators show the working status of the unit in the field.
The pressure range covers from 0.1”WC to 100”WC, unidirectional or bidirectional. The output can be 3-wire 0 to 5V, 0 to 10V, or 2-wire 4 to 20 mA, fully protected against short circuit and incorrect wiring. In the voltage version, the output can go down to true zero. The units are temperature compensated. The accuracy can be 0.6%, 0.4% or 0.25% at room temperature.
The patented stainless steel negative pressure transducer provides good corrosion resistance, excellent performance and long term stability.
Our unique production setup can also make special pressure range (e.g. -0.5”WC to +3.5”WC) to meet special applications.
Key Features of Alpha 167 negative pressure transducer:
Up to 15 PSI Proof Pressure on all Ranges
LED working status indicators
DIN Rail Mount
Detachable Euro style terminal block reduces wiring errors and field wiring time.
Miswiring Full Protection
Unsymmetrical Bidirectional Pressure Ranges
True Zero Output for Voltage Unit
Specification of Alpha 167 negative pressure transmitter:
Accuracy: ±0.25%, ±0.40% or ±0.60% of span
Differential Pressure Ranges:
Unidirectional: 0.10 in.W.C. to 100.00 in.W.C.
Bidirectional: ±0.10 in.W.C. to ±50.00 in.W.C.
NEMA 1; ABS enclosure
Mounting: DIN rail or surface mount
Output signal: current or voltage
Process Applications of Alpha 167 negative pressure monitor:
Power plant air flow monitor and control
Textile Machinery
Clean room and fume hood control
Duct static pressure measurement
Draft Control
HVAC and VAV control
Furnace air flow control
https://www.alphainstruments.com/product/model-167-differential-pressure-transmitter/
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Model 166 Cost-effective Differential Pressure Transducer
Product Description
Model 166 series cost effective pressure transducer are low range differential pressure transducers and transmitters. It features a flame retardant plastic enclosure with a metal backing. The unique design makes it can be used at outdoor environment and with easy access to zero and sensitivity adjustments.
The pressure range covers from 0.1″WC to 100″WC, unidirectional or bidirectional. The output can be 3-wire 0 to 5V, 0 to 10V, or 2-wire 4 to 20 mA, fully protected against short
circuit and incorrect wiring. In the voltage version, the output can go down to true zero. The units are temperature compensated. The accuracy can be 0.6%, 0.4% or 0.25% at room temperature.
The patented stainless steel cost effective pressure sensor provides good corrosion resistance, excellent performance and long term stability.
Our unique production setup can also make special pressure range (e.g. -0.5″WC to +3.5″WC) to meet special applications.
Key Features of Alpha 166 cost effective pressure sensor:
Up to 15 PSI Proof Pressure on all Ranges
Miswiring Full Protection
Unsymmetrical Bidirectional Pressure Ranges
True Zero Output for Voltage Unit
Specification of Alpha 166 cost effective pressure transducer:
Accuracy: ±0.25%, ±0.40% or ±0.60% of span
Differential Pressure Ranges:
Unidirectional: 0.10 in.W.C. to 100.00 in.W.C.
Bidirectional: ±0.10 in.W.C. to ±50.00 in.W.C.
NEMA 1; ABS enclosure
Mounting: surface mount
Output signal: current or voltage
Process Applications of Alpha 166 cost effective pressure transducer:
HVAC and VAV Control
Clean Room and Isolation Rooms
Duct Static Pressure Measurement
Draft Control and Fume Hood Control
Furnace Air Flow Control
Power Plant Air Flow Monitor and Control
https://www.alphainstruments.com/product/model-166-differential-pressure-transmitter/
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Model 165 Stainless Steel Differential Pressure Transducer
Product Description
The Model 165 Series capacitive pressure transducer for building energy management systems, environmental pollution control, oven pressurization, lab and fume hood control, HVAC and VAV applications.
The Model 165 Series capacitive pressure transmitter is available for full scale pressure range from 0 to 0.1″WC till 0 to 100″WC. Both unidirectional and bidirectional pressure ranges are offered. The output of the Model 165 capacitive type pressure transducer is available in two versions: 0 to 5VDC and 0 to 10VDC, where 0VDC is true zero without offset. The output of Model 165 capacitive transducer for pressure measurement is 4 to 20 mA. All units are temperature compensated. The accuracy can be 0.6%, 0.4% or 0.25% at room temperature.
The patented variable capacitance pressure sensor is constructed by stainless steel and glass, no glue or other organics. That provides excellent performance, corrosion resistance and long-term stability.
Additionally, our unique production setup allows us to accommodate special orders for nonstandard pressure ranges (e.g. -0.5″WC to +3.5″WC).
Key Features of Alpha 165 capacitive pressure transmitter:
Up to 15 PSI Proof Pressure on all Ranges
Miswiring Full Protection
Unsymmetrical Bidirectional Pressure Ranges
True Zero Output for Voltage Unit
Specification of Alpha 165 capacitive type pressure transducer:
Accuracy: ±0.25%, ±0.40% or ±0.60% of span
Differential Pressure Ranges:
Unidirectional: 0.10 in.W.C. to 100.00 in.W.C.
Bidirectional: ±0.10 in.W.C. to ±50.00 in.W.C.
NEMA 1; ABS enclosure
Mounting: surface mount
Output signal: current or voltage
Process Applications of Alpha 165 capacitive transducer for pressure measurement:
HVAC and VAV Control
Clean Room and Isolation Rooms
Duct Static Pressure Measurement
Draft Control and Fume Hood Control
Furnace Air Flow Control
Power Plant Air Flow Monitor and Control
https://www.alphainstruments.com/product/model-165-differential-pressure-transmitter/
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Model 164 Stainless Steel Differential Pressure Transducer
Product Description
The Model 164 Series pressure sensor ranges vary from 0.1 in w.c. to 100 in w.c. unidirectional and 0.05 in w.c. to 50 in w.c. bidirectional. Wiring time is reduced with the removeable terminal block. Each unit is fully protected against short circuiting and incorrect wiring.
The Model 164 Series stainless steel pressure sensor are available for pressure range from 0.1″WC full scale to 100″WC full scale, Both unidirectional and bidirectional pressure ranges are offered.
The output of the Model 164 Stainless Steel Pressure Transducer is available in two versions: 0 to 5VDC and 0 to 10VDC, where 0VDC is true zero without offset. The output of Model 164 Stainless Steel Pressure Transmitters is 4 to 20 mA. All units are temperature compensated.
The patented variable capacitance pressure sensor is constructed by stainless steel and glass, no glue or other organics. That provides excellent performance, corrosion resistance and long-term stability.
Additionally, our unique production setup allows us to accommodate special orders for nonstandard pressure ranges (e.g. -0.5″WC to +3.5″WC).
Key Features of Alpha 164 stainless steel pressure sensor:
Up to 15 PSI Proof Pressure on all Ranges
Miswiring Full Protection
Unsymmetrical Bidirectional Pressure Ranges
True Zero Output for Voltage Unit
Specification of Alpha 164 stainless steel pressure transducer:
Accuracy: ±0.25%, ±0.40% or ±0.60% of span
Differential Pressure Ranges:
Unidirectional: 0.10 in.W.C. to 100.00 in.W.C.
Bidirectional: ±0.10 in.W.C. to ±50.00 in.W.C.
NEMA 1; ABS enclosure
Mounting: surface mount
Output signal: current or voltage
Process Applications of Alpha 164 stainless steel pressure transmitter:
HVAC and VAV Control
Clean Room and Isolation Rooms
Duct Static Pressure Measurement
Draft Control and Fume Hood Control
Furnace Air Flow Control
Power Plant Air Flow Monitor and Control
https://www.alphainstruments.com/product/model-164-differential-pressure-transmitter/
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Model 162 Cost-effective Differential Pressure Transducer
The Model 162 Differential Pressure Transmitter can withstand up to 15 psig overpressure with no damage to the unit. Variable capacitance sensor design provides excellent sensitivity and long-term stability. Compact, lightweight design makes installation simple and easy. Units also feature reverse-polarity protection.
The Model 162 Series electronic pressure transducer is available for pressure range from 0.1″WC full scale to 100″WC full scale, Both unidirectional and bidirectional pressure ranges are offered.
The output of the Model 162 Electrical Pressure Transducer is available in two versions: 0 to 5VDC and 0 to 10VDC, where 0 VDC is true zero without offset. The output of Model 162 Pressure Transmitters is 4 to 20 mA. All units are temperature compensated.
The patented variable capacitance pressure sensor is constructed by stainless steel and glass, no glue or other organics. That provides excellent performance, corrosion resistance and long-term stability.
Additionally, our unique production setup allows us to accommodate special orders for nonstandard pressure ranges (e.g. -0.5″WC to +3.5″WC).
Key Features of Alpha 162 electronic pressure transducer:
Up to 15 PSI Proof Pressure on all Ranges
Miswiring Full Protection
Unsymmetrical Bidirectional Pressure Ranges
True Zero Output for Voltage Unit
Specification of Alpha 162 electrical pressure transducer:
Accuracy: ±0.25%, ±0.40% or ±0.60% of span
Differential Pressure Ranges:
Unidirectional: 0.10 in.W.C. to 100.00 in.W.C.
Bidirectional: ±0.10 in.W.C. to ±50.00 in.W.C.
NEMA 1; ABS enclosure
Mounting: surface mount
Output signal: current or voltage
Process Applications of Alpha 162 electronic pressure transducer:
HVAC and VAV Control
Clean Room and Isolation Rooms
Duct Static Pressure Measurement
Draft Control and Fume Hood Control
Furnace Air Flow Control
Power Plant Air Flow Monitor and Control
https://www.alphainstruments.com/product/model-162-differential-pressure-transmitter/
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Model 161 Cost-effective Differential Pressure Transducer
Product Description
The low cost Model 161 Series are low range differential pressure transducers and transmitters. Each unit features a stainless steel pressure sensor, a stainless steel back cover and a plastic enclosure, which meets the NEMA 1 requirement. The electrical terminal screws and adjustment holes are concealed beneath a detachable plastic cap. All units are fully protected against short circuiting and incorrect wiring.
The Model 161 Series pressure sensors are available for full scale pressure range from 0 to 0.1″WC till 0 to 100″WC. Both unidirectional and bidirectional pressure ranges are offered.The output of the Model 161 Pressure Transducer is available in two versions: 0 to 5VDC and 0 to 10VDC, where 0VDC is true zero without offset. The output of Model 161 Pressure Transmitters is 4 to 20 mA. All units are temperature compensated. The accuracy can be 0.6%, 0.4% or 0.25% at room temperature.
The patented variable capacitance pressure sensor is constructed by stainless steel and glass, no glue or other organics. That provides excellent performance, corrosion resistance and long-term stability.
Additionally, our unique production setup allows us to accommodate special orders for nonstandard pressure ranges (e.g. -0.5″WC to +3.5″WC).
Key Features of Alpha 161 pressure sensor:
Up to 15 PSI Proof Pressure on all Ranges
Miswiring Full Protection
Unsymmetrical Bidirectional Pressure Ranges
True Zero Output for Voltage Unit
Specification of Alpha 161 pressure transmitter:
Accuracy: ±0.25%, ±0.40% or ±0.60% of span
Differential Pressure Ranges:
Unidirectional: 0.10 in.W.C. to 100.00 in.W.C.
Bidirectional: ±0.10 in.W.C. to ±50.00 in.W.C.
NEMA 1; ABS enclosure
Mounting: surface mount
Output signal: current or voltage
Process Applications of Alpha 161 pressure transducer:
HVAC and VAV Control
Clean Room and Isolation Rooms
Duct Static Pressure Measurement
Draft Control and Fume Hood Control
Furnace Air Flow Control
Power Plant Air Flow Monitor and Control
https://www.alphainstruments.com/product/model-161-differential-pressure-transmitter/
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