Instrumentation, automatic control and data logging that hold a research seawater system within its set-points, protect the stock with fail-safe alarms, and give scientists the continuous, traceable record their work depends on.
A marine research seawater system is only as good as its control. Conditions must be held within tight tolerances for experiments to be valid; a single overnight excursion in temperature, oxygen or salinity can lose months of work or the stock itself. Reynolds & Bauhm designs the instrumentation, PLC/SCADA control and alarm architecture that keep a facility on set-point, fail safely, and log every parameter to a traceable, exportable record — from a single packaged skid up to a multi-system building integrated with the wider BMS.
| Parameter | Typical sensor | Purpose / interlock |
|---|---|---|
| Temperature | PT100 / PT1000 | Hold set-point; trip heater/chiller; alarm |
| Dissolved oxygen | Optical (luminescent) DO | Start oxygenation; low-DO life-safety alarm |
| pH | Glass / ISFET electrode | CO²/alkalinity control; stress alarm |
| Salinity / conductivity | Inductive conductivity | Make-up control; osmotic-stress alarm |
| Turbidity | Nephelometric (NTU) | Filter performance; clarity for seagrass |
| Flow | Electromagnetic / paddle | Confirm tank turnover; loss-of-flow trip |
| Level | Hydrostatic / radar / float | Sump & header protection; pump control |
| ORP (if ozone/UV) | ORP electrode | Disinfection control; residual safety |
Loss of flow, low DO or high temperature trigger graded responses — standby pump start, oxygen injection, audible/SMS alarm — before conditions threaten the stock. Critical functions are hard-wired, not software-only.
Duty/standby pumps and blowers, UPS-backed controls and, where required, dual-feed power keep the most critical systems running through a single failure.
A PLC runs the control loops; a SCADA HMI gives operators live mimic, trends and set-point control, with role-based access and an audit trail.
SCADA & AutomationOut-of-hours alarms by SMS, email or autodialler with escalation, so an excursion at 3am reaches the on-call researcher in time to act.
Every parameter is logged at a configurable interval and exportable (CSV/database) — the continuous, time-stamped record that makes experiments reproducible and auditable.
Open protocols (Modbus, BACnet, OPC-UA) integrate the seawater plant with the building BMS, lab systems and remote dashboards.
Tell us the systems, the critical parameters and your alarm and data requirements — we’ll design the instrumentation, control philosophy and SCADA to match.
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