Transmitter AMU-II pH/Redox AC

Specifications

Measuring and control transmitter for panel installation in a Noryl® resin enclosure (front IP 54).

Sensors: Connections for a pH or ORP sensor with integrated or separate reference electrode, for a Pt1000 temperature sensor, and for a digital sample flow meter.

Measuring range: 

• 0 to 14 pH or -500 to +1500 mV
• Automatic temperature compensations according to Nernst with or without correction functions
• Measured value is compensated to 25 °C.

User interface:

• Big backlit LC display for measuring value, sample temperature, sample flow and operating status
• Easy user menus in English, Chinese, German, French and Spanish. Simple programming of all parameters by keypad
• Data logger for 3’500 data records stored at a selectable interval.   

Connections:

• 2 signal outputs (0/4 - 20 mA) for measured values or continuous control
• 2 potential-free contacts as limit switches or as controllers, configuration normally open
• 1 potential-free alarm contact as summary alarm indication, selection NC (normally open) or NO (normally closed) via terminal
• 1 input for potential-free contact for hold or remote-off function
• 1 serial interface RS232 (for logger/history download and firmware updates via optional USB converter)
• All in- and outputs protected against overvoltages.   

Communication Options:  

• Profibus DP / Modbus RTU interface or  
• HART interface or  
• USB interface (for data logging and firmware updates)    

Power Supply: 

• AC version: 100 - 240 VAC (+/- 10 %), 50/60 Hz (+/- 5 %) 
• DC version: 10 - 36 VDC    

Dimensions: 96 x 96 x 85 mm (DIN 43700)