Máy đo điểm sương cầm tay XPDM - Cosa + Xentaur Việt Nam

DATASHEET

TECHNICAL SPECIFICATIONS

DEWPOINT SENSOR ELEMENT

Type: . . . . . . . . . . . . . . . . . . . . . . Hyper-Thin-Film high capacitance Al2O3

Dewpoint range . . . . . . . . . . . . . -148°F to +68°F (-100°C to +20°C)

Accuracy: . . . . . . . . . . . . . . . . . . . ±5.5°F (± 3°C )

Repeatability: . . . . . . . . . . . . . . . ±0.9°F (±0.5°C)

Response time*: . . . . . . . . . . . . . For a step change from -40°C to -60°C: 63% in 90 seconds; 90% in 450 seconds

TEMPERATURE RANGE

Sensor:. . . . . . . . . . . . . . . . . . . . . . -22°F to 120°F (-30°C to +50°C)

Electronics:. . . . . . . . . . . . . . . . . . 14°F to 120°F (-10°C to +50°C)

Storage temperature: . . . . . . . . -4°F to +140°F (-20°C to +60°C)

Sample flow range: . . . . . . . . . . Static to 100 m/s(linear velocity @1atm)

Calibration method: . . . . . . . . . This field calibration procedure is fully automated and the user is prompted though a simple

one minute procedure, which requires no additional equipment. NIST traceable factory calibration optionally available.

TEMPERATURE AND PRESSURE MEASUREMENTS

The sample temperature is measured with a precision integrated circuit temperature sensor.

Units may be optionally fitted with a pressure sensor.

MECHANICAL

Enclosure . . . . . . . . . . . . . . . . . . . Anodized Aluminum, Dimensions: 2.5“ x 4.25” x 7.5”. Regulator and Filter mounting facilities.

Sampling chamber . . . . . . . . . . Electropolished 316 stainless steel

Moving parts seals: . . . . . . . . . . Spring energized PTFE seals

Pressure operating range:. . . . Standard: 29 PSI (2 bar)

Absolute max.: 100 PSI (6.8 bar)

Gas sample connections: . . . . 1/4” VCO input and output ports

Electrical connections: . . . . . . . Optional 2mm DC power jack, 9 pin “D” for analog & RS-232.

Power requirements: . . . . . . . . 9v battery and optional 15-25V AC or DC wall transformer.

* These response times are not directly comparable to competitors data, because of differences in measurement methodology

and data presentation. Please inquire for detailed comparisons between Xentaur and other major sensor manufacturers.

FEATURES

Sensor storage: . . . . . . . . . . . . . . When not in use the sensor is retracted in a molecular sieve container and kept at an approximate dewpoint of -80°C. The sample gas pressure activates a piston which

automatically moves the sensor into the sampling chamber, thus even low dewpoints can be measured extremely quickly.

Area classification . . . . . . . . . . . Approved for use in hazardous (classified) areas Class I, Div. 1, Groups A, B, C & D. Available as an option.

Input resolution:. . . . . . . . . . . . . 0.1°C dew point.

Indicators:. . . . . . . . . . . . . . . . . . . LCD with backlight, 3.5 digits and custom legends for units and mode, audio alert.

Engineering units: . . . . .. . . °C,°F, PPM, lbs H2O/mm scf, g H20/m3

Controls: . . . . . . . . . . . . . . . . . . . . 5 push buttons, all settings stored in EEprom. Manual Sensor Actuator.

Outputs: . . . . . . . . . . . . . . . . . . . . Optional 4/20mA or 0/24mA and RS-232.

Isolation: . . . . . . . . . . . . . . . . . . . . Sensor and case are isolated from the power supply , analog output and RS-232.

Battery saver:. . . . . . . . . . . . . . . . Auto power off after 6 minutes.

Pressure correct:. . . . . . . . . . . . . Programmable pressure correction button