230-355 Handheld Digital Barometer & Altimeter 
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| 230-355 Hand Held Digital Barometer & Altimeter |
The Model 230-355 Handheld Digital Barometer & Altimeter combines accurate pressure sensing with the power of microprocessor-based computations to provide instantaneous pressure and altitude readings. A combination of small size, digital display, versatility, and high accuracy make it ideal for field measurements or as a portable pressure reference.
Keypad controls provide access to the operating functions. Pressure or altitude may be displayed in a variety of units. The LCD display shows the data output and operating mode.
This instrument measures atmospheric pressure very accurately, to within 0.01" Hg. Altitude is computed using the U.S. Standard Atmosphere of 1962. The altitude function used with the min/max and tare make the unit useful as a surveyors tool. The device is temperature compensated over its operating temperature range.
The 316 stainless steel pressure sensor has extremely low sensitivity to shock, vibration, acceleration, and changes in orientation or temperature, yet features high sensitivity to pressure variations. Each unit comes with a certificate of calibration traceable to NIST.
Specifications
| Units | Full Scale | Accuracy | Resolution |
| Pressure | |||
| mm Hg | 900 | ± .2 | .1 |
| in Hg | 35.43 | ± .01 | .01 |
| mb | 1200 | ± .2 | .1 |
| kPa | 120 | ± .02 | .01 |
| psi | 17.40 | ± .01 | .01 |
| Altitude | |||
| feet | 36,000 | - | 1.0 |
| meters | 10,973 | - | 1.0 |
Accuracy: ± 0.02% F.S. (F.S. = 900 mm Hg abs)
NIST traceability: NIST certificate supplied
Selection of engineering units: mm Hg, psi, in Hg, mbar, Bar, kPa, Torr.
Temperature range:
Storage: -40° to 120° F
Operating: 23° to 122° F
Tare: Sets display to zero to allow measurement of vacuum, gauge pressure, or change in altitude.
Min/Max capture: Capture speed is equal to the selected damping rate.
Damping rates: User selectable from 0.1 to 25 seconds
Display: 5 significant digit LCD (0.25" high)
Contrast adjustment: Adjusts display for easier viewing.
Enclosure: 14 oz (6.5" x 3.6" x 2.25") ABS plastic case
Process connections: 1/8" female NPT, 316ss
Media compatibility: Isolated AI sensor for fluids compatible with 316ss
Power: 9-volt alkaline battery with user enabled automatic shut off.
9-volt lithium battery is recommended for use below 32°F (0°C).
Approvals: CE compliant
Weight/shipping (with carrying case): 1 lb/2 lbs
Manuals:
230-355 Barometer (PDF 320KB)
Ordering Information
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Barometric Pressure Sensors
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