'A' Series Arithmetic Units & Power Supplies Function Arithmetic Units Option General Notes Suffix (click)             R       K DI M Scale/bias/invert ACC311         Window expansion/contraction/reversal Square root ACC312 Process input root extraction High/low select ACC313 Multi-input (up to 5) Hi or lo select Multi I/P +, -, Av ACC314 Multi-input (up to 5) +, - or Average Multiply/Divide ACC315 2 or 3 input dependent on equation High and low limit ACC316   Shunt I to 400mV, V >400mV Linear Integrator ACC353 50 to 50,000 counts per hour   Function Power Supplies Option General Notes Suffix (click)             R       K DI M Single output APS901-1 24V @21mA for loop excitation Double output APS901-2 2 x 24V @21mA for loop excitation High current APS991 12, 15 or 24V @ up to 1A   Key to Table      Not available      Standard Features Standard AMELEC product Fully insulated - Input(s)/ Output/ Supply/ Earth Non-chargeable option Output drive - (current) Up to 20mA into a 20V loop. Chargeable option - (Voltage) Up to 10V at up to 20mA loading. Chargeable option Multi input unit, 3,4 or 5 input