This is the Chinese version of the instruction manual of HI 9910 - HI 9911 HI 9920 Wall Mounted pH & ORP Controllers, which introduces the characteristics and features of the product.
The Hanna Instruments HI 9910, HI 9911, and HI 9920 are wall-mounted controllers designed for process control applications. The HI 9910 is a single setpoint pH controller, the HI 9911 is a dual setpoint pH controller, and the HI 9920 is an ORP controller specifically designed for swimming pools and drinking water sanitation. These instruments feature rugged, modular, fiber-reinforced ABS housings and incorporate a triple contact alarm system.
| Range | 0.00 to 14.00 pH |
|---|---|
| Resolution | 0.01 pH |
The controllers come equipped with relays operating at a maximum of 2A.
The relays and dosing terminals are rated for a maximum of 2A at 240V.
The instruments measure from 0.00 to 14.00 pH with a resolution of 0.01 pH.