The Laureate pulse-input batch controller is a powerful and highly accurate production workhorse in the form of a compact 1/8 DIN panel meter to control repetitive fill operations. It utilizes the Laureate FR dual channel pulse input signal conditioner and the Laureate dual relay board (8A contact or 120 mA AC/DC solid state relays).

The built-in six digit LED display can show the current batch total (Item #1), grand total or number of batches (Item #2), and flow rate (Item #3). All displayed values are scaled to engineering units of volume or flow. The batch total (Item #1) can be set up to count up from zero to a preset limit, or down from a preset limit to zero.

Either relay of the dual relay board can be assigned to the batch total (Item #1) to serve as a pre-warn to slow down filling near the setpoint, to the grand total or number of batches (Item #2), or to flow rate (Item #3). Fill operations are repeated continually with a programmable delay from 10 ms to 199.99 sec, or based on an external control input.

An optional RS-232 or RS-485 board allows the batch controller to transmit Items #1, #2 and #3, as well as peak for #3 (rate). If required, all four items can be displayed simultaneously by augmenting the batch controller with up to three Laureate remote displays. Each of these can have its own analog output and dual relays for alarm or control.

Fast, High Accuracy MeasurementThe pulse-input batch controller utilizes the Extended counter main board and FR dual channel signal conditioner board to accept a wide range of pulse signals, in particular those from turbine flow meters. The same signal is applied in parallel to the A and B channels, which are used independently. Either channel can accept pulse rates from 0.005 Hz to 250 kHz, which exceeds the working range of turbine flow meters.

Flow Meter Signal Conditioner

The FR dual-channel signal conditioner accepts pulses from all types of turbine flow meters and most industrial transducers with a pulse output such as proximity switches with PNP or NPN output, TTL or CMOS logic, magnetic pickup pulses down to 12 mV, as well as AC inputs up to 250 Vac. Jumper selections provide optimum operation for different sensor types and noise conditions.

A built-in isolated 5, 10, or 24 Vdc excitation supply can power proximity switches and other sensors, and eliminate the need for an external power supply.

Other Features The 1/8 DIN case of Laureate meters and counters meets NEMA 4X (IP-65) standards from the front for high pressure wash-down when panel mounted. All power and signal connections are via UL / VDE / CSA rated screw clamp plugs, which are standard.