'AS' Series Trip Amplifiers Function Option General Notes Suffix (click)         X X X Thermocouple AST111 Types: B,E,J,K,N,T,R,S. AST112 Millivolt AST115 From 0-5mV to 0-400mV AST116 RTD AST121 2,3 or 4 wire connection AST122 Process AST131 Voltage 1/P Z 1MOhm AST132 Current 400mV drop Slidewire AST141 Conventional or conductive plastic AST142 2,3 or 4 wire connection Key to Table Not available Standard Features Standard AMELEC product     Fully insulated - Input(s)/ Contacts/ Supply/ Earth Non-chargeable option Chargeable option SPCO on this unit