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Discover the 4H-JENA range

Specialists in dissolved gas monitoring and FerryBox systems for installation in vessels, designed to suit each individual application.

4H-JENA is renowned for a wide range of in-situ underwater sensor systems to detect hydrocarbons (e.g. methane), CO2, dissolved oxygen, Total Alkalinity, pH and fully integrated systems down to full ocean.

HydroC CO2 Sensor

The CONTROS HydroC® CO₂ sensor is a unique and versatile subsea / underwater carbon dioxide sensor for in-situ and online measurements of dissolved CO₂. The CONTROS HydroC® CO₂ is designed to be used on different platforms following different deployment schemes. Examples are moving platform installations, such as ROV / AUV, long-term deployments on seabed observatories, buoys and moorings as well as profiling applications using water-sampling rosettes.

HydroC CO2 FT flow through

Although not the most powerful greenhouse gas, CO2 drives climate change due to the enormous volumes of this gas pumped into the atmosphere. Studies on the behaviour, distribution and interaction of CO2 in surface waters depend on accurate in-situ measurements. CONTROS’ HydroC™ CO2 FT is a unique flow-through sensor for dissolved carbon dioxide in surface waters.

HydroFIA TA analyser for total alkalinity in seawater

The CONTROS HydroFIA TA is a flow-through system for the determination of the total alkalinity in seawater. It can be used for continuous monitoring during surface water sampling or for discrete samples. The HydroFIA can easily be integrated into online “Ferry box” type installations.

HydroC PAH fluorometer for Polycyclic Aromatic Hydrocarbons

Already smallest amounts of oil in water have a negative affect on the marine environment and reduce the quality of fresh water in lakes and reservoirs. As oil in water contains significant amounts of PAH (polycyclic aromatic hydrocarbons), it can be detected with a sensitive in-situ fluorometer.

HydroC MEG Mono Ethylene Glycol Leak Detection

Mono Ethylene Glycol is one of the most important fluids in the modern Oil + Gas industry. Indeed, in many areas of the offshore, the monitoring of MEG has become a necessity. CONTROS’ HydroC™ – MEG is a unique underwater leakage sensor solving the global problems of the insitu measurements of Mono Ethylene Glycol.

Contros Mobile Leak Detection System

Hydrocarbons in seawater are a multiphase mix consisting of an oil phase, gas bubbles, dissolved gas in seawater, formation water, cold seawater and solid gas hydrate phase. In order to detect and localize any hydrocarbon emission at the earliest stage possible and under any environmental conditions.

HydroC Battery Pack

There are three different sizes of battery housings available. Each housing can either be filled with rechargeable batteries or primary batteries. The housings are offered as light version deployable until 300 m water depth or as heavy version deployable until 6.000 m water depth.

FerryBox

he -4H- FerryBox is an autonomous, low-maintenance measuring system, which is designed for the continuous operation onboard ships, on measurement platforms and at river banks.

Active/Passive Sampler

4H-Jenna offer sampling systems for different purposes: – Passive sampler – Active sampler – Litter sampler – Plankton sampler Passive sampler The -4H-Passive Sampler is a flow-through tube array, which can be equipped with different receiving membranes (e.g. diffusive gradients in thin films (DGT), low-density polyethylene or silicone rubber strips).

CONTROS HydroC CH₄ FT

The CONTROS HydroC CH₄ FT is a unique surface methane partial pressure sensor designed for flow through applications like pumped stationary systems (e.g. monitoring stations) or ship based underway systems (e.g. FerryBox). Fields of application include: Climate studies, methane hydrate studies, limnology, fresh water control, aquaculture / fish farming.

CONTROS HydroC® CH₄

The CONTROS HydroC® CH₄ sensor is a unique subsea / underwater methane sensor for in-situ and online measurements of CH₄ partial pressure (p CH₄). The versatile CONTROS HydroC® CH₄ provides the perfect solution for the monitoring of background CH₄ concentrations and for longterm deployments.

CONTROS HydroFIA pH

The CONTROS HydroFIA pH is a flow-through system for the determination of the pH value in saline solutions and ideally suited for measurements in seawater. The autonomous pH analyser can be used in the lab or easily integrated into existing automated measuring systems on e.g. voluntary observing ships (VOS).

CONTROS HydroFIA pH

The CONTROS HydroFIA pH is a flow-through system for the determination of the pH value in saline solutions and ideally suited for measurements in seawater. The autonomous pH analyser can be used in the lab or easily integrated into existing automated measuring systems on e.g. voluntary observing ships (VOS).

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