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Barometric Pressure Sensor

230-278 Series Barometric Pressure Transducers

SKU: 230-278-CONFIG Categories: , Tags: , ,

The 230-278 Barometric Pressure Transducer is designed for use in environmental applications that require excellent accuracy, fast dynamic response, and long-term stability and reliability. To withstand the environmental extremes typically found in Automated Weather Station (AWS) and environmental monitoring applications, the 230-278 housing is constructed of stainless steel and polyester.

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The 230-278 Barometric Pressure Transducer is designed for use in environmental applications that require excellent accuracy, fast dynamic response, and long-term stability and reliability. To withstand the environmental extremes typically found in Automated Weather Station (AWS) and environmental monitoring applications, the 230-278 housing is constructed of stainless steel and polyester. A removable 5-pin terminal strip module is provided for easy connection to data loggers, and a 1/8" barbed fitting is used for pressure connection. The transducer's footprint (3.6" x 2.4" x 1.0") makes it ideal for use as a new or drop-in replacement to existing configurations. The 230-278 is operable in temperatures from -40 °F to +140 °F (-40 °C to +60 °C). This unit consumes low levels of power (3 mA nominal) while in operation. Its sleep mode feature reduces power consumption to 1 µA, and provides instant startup for applications where pressure readings must be taken quickly.

Principles of Operation

The 230-278 utilizes the Setraceram™ capacitive sensor and proprietary custom IC analog circuit. This fundamentally simple design and thermally stable glass fused ceramic sensing capsule is coupled with a sophisticated capacitance charge-balance IC circuit where accurate signal conditioning and environmental compensation is performed. The Setraceram™ sensor provides excellent thermal expansion coefficient and low mechanical hysteresis, which contributes to the long-term stability of the instrument.

Specifications

Performance Data

Pressure Range 500 600 800
Temperature Accuracy (mb)
    68 °F (20 °C) ±0.6 ±0.5 ±0.3
    32-104 °F (0/40 °C) ±1.2 ±1.0 ±.06
    4-122 °F (-20/50 °C) ±2.0 ±1.5 ±1.0
    40-140 °F (-40/60 °C) ±2.5 ±2.0 ±1.5
Non-Linearity ±0.5 ±0.4 ±0.25
Hysteresis ±0.06 ±0.05 ±0.03
Non-Repeatability ±0.04 ±0.03 ±0.02

 

 

 

 

 

 

 

 

  • Resolution: 0.01 mb
  • Long term stability: 0.1 mb/yr
  • Warm-up: < 1 sec from shutdown mode (Warm-up shift < 0.1 mb maximum)
  • Response time: < 100 mSec
  • Proof pressure: 1500 mb
  • Burst pressure: 2000 mb

Environmental Data

  • Operating temperature: -40 °F to +140 °F (-40 °C to +60 °C)
  • Storage temperature: -76 °F to +248 °F (-60 °C to +120 °C)

Physical Description

  • Case: Stainless steel and polyester
  • Pressure fitting: 1/8″ (i.d.) barbed fitting
  • Electrical connection: 5-pin terminal block
  • Dimensions: 3.6″ x 2.4″ x 1.0″
  • Weight: 4.8 oz (135 g) approx

Electrical Data

  • Electrical circuit: 3 or 4 wire
  • Excitation:** 9.5 to 28 Vdc
  • Output:*** 0 to 2.5 Vdc, 0 to 5 Vdc
  • Output impedance: < 10 Ohms
  • Output noise: < 50 microvolts
  • Current consumption: 3 mA nominal (operating mode), 1 µA (sleep mode)

** Internal regulation minimizes effect of excitation variation, with < 0.02 mb output change over 9.5 Vdc to 28 Vdc range
*** Zero output saturates at about 20 mV

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Shipping Info

Important Notes About Shipping Charges

Unless specific instructions accompany the order, we will use our judgment as to the best method of shipment. Most orders are shipped via United Parcel Service. Special arrangements can be made for other carriers. All shipments are F.O.B. Grass Valley, California. Title and risk of loss will pass to the purchaser upon delivery to the freight carrier. The purchaser is responsible for all transportation and insurance charges. Shipping containers are not returnable.

The shipping charges provided by our website shopping cart are estimated based on the individual items in your order. If you are in the United States and have ordered more than one item, the actual shipping charge will sometimes be less than the amount quoted. If we have overcharged you for shipping, we will refund the difference after your order is shipped. If the actual shipping charge is higher than the amount quoted, we will contact you before shipping your order.

If you have any questions or special requirements, or to request an exact freight quote, please send a message or call us at +1 (530) 823-7185.

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