HI 8711 pH Analog Controller with Dual Output and Self-Diagnostic Test

Range: 0.00 to 14.00 pH Resolution: 0.01 pH Accuracy: ± 0.02 pH ( 0 to 100 ° C) @ 20 ° C ± 0.05 pH ( -20 to 0 ° C) ± 0.5% ( input from transmitter) Input: high impedance 1012 Ohm; reference and matching pin inputs are available; 4-20 mA Power Output: ± 5 Vcc; 150 mA max load for amplified electrodes Calibration: offset: ± 2 pH with OFFSET trimmer slope: 80 to 110% with SLOPE trimmer Temperature Compensation: fixed or automatic with Pt100, from -20 to 100° C ( -4 to 212° F) Recorder Output: 0-20 mA or 4-20 mA ( isolated) Setpoint Relay : 2, isolated, 2 A, max 240 V, resistive load, 1000000 strokes ( not fuse protected) Setpoint Range : alk. set: from 0.00 to 14.00 pH acid set: from 0.00 to 14.00 pH Alarm Relay: 1, isolated, 2 A, max 240 V, resistive load, 1000000 strokes ( not fuse protected) Alarm Range: 0.2 to 3.00 pH Dosing Control: OFF/ AUTO/ ON with selection switch Over Dosing Control: adjustable, from 5 min to 60 min with knob or disable by wire strap - on rear panel Backlight: continuous on Power Supply: 115 VAC ± 10% or 230 VAC ± 10% ; 50/ 60 Hz Enclosure: flame retardant ABS body and front panel; transparent splash-proof front cover Environment: -10 to 50° C ( 14 to 122° F) ; RH max 95% non-condensing Panel Cutout: 141 x 69 mm ( 5.6 x 2.7" ) Weight : 1 kg ( 2.2 lb.)