top of page

Underwater Mass Spectrometer (UMS) Capabilities

Analytical

UMS on ROV front porch
Methane.gif
Benzene.gif
DMS.gif

Analytes

Dissolved Permanent Gases: Nitrogen, oxygen, argon

Light Hydrocarbons: Methane, ethane, propane, butane

Volatile Organic Compounds: Pentane, cyclopentane, hexane, cyclohexane, benzene, toluene, dimethyl sulfide

pH Dependent Gases: Carbon dioxide, hydrogen sulfide

  • 20 nmol/L (0.32 ppb) Methane detection limit (by 3*std. dev. of noise)

  • Similar detection limits for ethane, propane and others

  • 6 orders of magnitude dynamic range

  • 20 - 40 s response time (by T90)

  • Analytical mass range is 0 to 100 amu (200 amu option available)

  • 4 to 10 s to scan all a target list

  • Full scan on demand for a full spectrum

Operational

  • Depth Rating: 3000 m

  • Power: 80W, Two hot swappable inputs

    • Primary Input: 110 - 250 VAC​

    • Secondary Input: 18 to 60 V​​​​

    • Hot swapping enables battery backup and hot power supply swaps

  • Diameter: 202 mm (8 in)​

  • Length: 526 mm (20.7 in)

  • Weight: 34 kg in Air, 17 kg in seawater (MSW)

  • Communication: RS-232, 57600 baud, 8N1 (default)

  • Networking: 12 W supply and RS-485 from the UMS enables networking with additional sensors

bottom of page