Temperature-regulating manifolds (thermoelectric or recirculated water type) are available for the LPMR-series modified Robbins devices and other TACT Tools. Thermoelectric modules consist of a resistive array or a Peltier heat pump embedded in an anodized aluminum ingot machined to accept one or two specific biofilm devices. A low-voltage, high-current DC circuit under microprocessor control drives the heat pump or resistive array. Solid-state sensors embedded in the aluminum ingot provide feedback to the microprocessor, which functions as a proportional integrating controller. The desired temperature is programmed by means of a front panel keypad, indexing the setpoint in one-degree increments up or down. The setpoint is displayed on an LCD display, along with the actual temperature and the power consumption of the driver circuit.
We also produce liquid-regulated thermal manifolds for use in laboratories that have a recirculating water bath available. These consist of an anodized aluminum ingot as above, machined with a serpentine pattern for fluid flow. In these manifolds temperature is regulated and maintained by the recirculating water bath.