Hanna Instruments HI 23 Series - Main Features of HI 23;HI 24 Series

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MAIN FEATURES OF DIFFERENT MODELS
• Display: large LCD with 4 ½ 13 mm digits and 3 ½ 7.7 mm
digits.
• LEDs: four LEDs are provided for signaling the energizing
of relays 1 and 2 (yellow LEDs) and alarm relay (a green
and a red LED).
• Relays: 2 output relays for low conductivity or high con-
ductivity dosage (COM, NO and NC contacts) and
1 output relay for alarm condition (COM, NO and NC
contacts).