Features and Benefits

• Only instrument to report δ²H, δ¹⁷O, δ¹⁸O and H₂O simultaneously

• Automated dual-inlet operation provides unsurpassed accuracy, precision, and ease of use

• Highest precision, reliable measurements at 2 Hz

• High-resolution absorption spectra provide data validation and detailed system diagnostics

• Now available in LGR’s Ultraportable package

• Accurate measurements over an extremely wide range of mixing ratios and isotopic ratios

• Proven fast flow time response allows isotopic flux studies

• Enhanced Performance models provide measurements with negligible drift

• Insensitive to other ambient air constituents like methane or carbon dioxide

Performance Specifications

Precision (1s, 10 sec / 100 sec):

δ²H: 0.5‰ / 0.2‰

δ¹⁷O: 0.15‰ / 0.05‰

δ¹⁸O: 0.15‰ / 0.05‰

[H₂O]: 0.2% / 0.07%

Maximum Drift (15 min average, at STP, over 24 hrs):

δ²H: 0.8‰

δ¹⁷O: 0.2‰

δ¹⁸O: 0.2‰

[H₂O]: 0.1%

Measurement Rates:

Up to 2 Hz (up to 5 Hz, upon request)

Accuracy:

Total measurement uncertainty<0.1% (with WVISS)

Measurement Range:

4000 – 60000 ppm (non-condensing)

(measurements down to 100 ppm upon request)

Sampling Conditions:

Sample Temperature: -30 – 50 °C

Operating Temperature: 0 – 40 °C

Ambient Humidity: 0-100% RH, non-condensing

Outputs:

digital (RS232), Ethernet, USB

Power Requirements (steady state):

115/230 VAC, 50/60Hz, 200 watts

Dimensions:

11” × 38” × 22” (benchtop package)

14” × 19” × 24” (rackmount package)

Weight:

35 kg (rackmount package)

40 kg (benchtop package)

Ordering Information

WVIA-911（δ²H, δ¹⁸O, H₂O）

WVIA-912（δ²H, δ¹⁸O, H₂O）

TWVIA-911（δ²H, δ¹⁷O, δ¹⁸O, H₂O）

TWVIA-912（δ²H, δ¹⁷O, δ¹⁸O, H₂O）

Manufacturer: ABB, Canada