ASTI - Model 4TX -Single Channel pH, ORP & Temperature Meter & Analyzer

Ph/orp measurement & control. User selectable atc probe. (pt-1000, 10k thermistor & 3k balco). Four programmable relays for ph or orp. Reversible and isolated 4-20 ma output. Bumpless calibration. -10 to + 120 o c temperature compensation. Custom design large display lcd. Membrane switch with audio feedback. Automatic temperature compensation. High 50/60 hz noise rejection. Power down memory back-up. Watertight ip65 1/4 din enclosure. Programmable delay for wash relay. CE approved.