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As a pressure transmitter supplier, Alpha instruments Inc specialized in the development and manufacture of low differential pressure sensor, which were applied in HVAC, Critical Environments, Medical Industry, Semiconductor Equipment, etc.

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