Hach-Lange SI794 C User Manual - Manual (Page 102)

Display LC display, 7-segment with icons
Main display Character height 17 mm, unit symbols 10 mm
Secondary display Character height 10 mm, unit symbols 7 mm
Sensoface 3 status indicators (friendly, neutral, sad face)
Mode indication 5 mode indicators "meas", "cal", "alarm", "cleaning", "config"
18 further icons for configuration and messages
Alarm indication Red LED in case of alarm or HOLD, user defined
Keypad 5 keys: [cal] [conf] [ 4 ] [ 5 ] [enter]
Service functions
Current source
Current specifiable for output 1 and 2 (00.00 to 22.00mA)
Manual controller Controller output entered directly (start of control process)
Device self-test Automatic memory test (RAM, FLASH, EEPROM)
Display test Display of all segments
Last Error Display of last error occurred
Sensor monitor Display of direct sensor signal (resistance/temperature)
Relay test Manual control of the four switching contacts
Parameter sets * Two selectable parameter sets for different process phases
Switchover via CONTROL input or manually
Signaling via relay contact PSet2
Data retention Parameters and calibration data > 10 years (EEPROM)
EMC EN 61326
Emitted interference Class B (residential area)
Class A for mains > 60 V DC
Immunity to interference Industry
102
Specifications