LMI Technologies Liquitron DC4000 Series, Инструкция по эксплуатации

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9.0 Product Specifications
Power 115 VAC +/-15%, 50/60 Hz
Requirements 230 VAC +/-15%, 50/60 Hz
Voltage input selectable via a selector switch located on the I/O PCB
Fuse: 4A 250 VAC Time Delay
Inputs Flow Switch
All low voltage inputs active low, i.e. the active state is when the switch is closed.
The switch must be capable of switching 2 mA at +/-15 VDC.
Outputs Alarm
4-20 mA: 600 ohms maximum
Keypad Three key membrane keypad with tactile response
Material: Polyester with a hard coat finish
Actuation Force: 2.6N to 3.3N
Temperature Input Thermistor resistance 10 k Ohms at 77° F [25° C]
Temperature Display: 32° F to 212° F [0° C to 100° C]
Temperature resolution: +/- 1.8° F [+/- 1° C]
Probe Input Cell constant of 1.5
ESD Protection: 700 Volts
Three (3) sample readings / second : display updated every second
Relays Fuse protected electromechanical.
Bleed/Control Relay (1): 250 VAC, 10 amp contact relay
Feed Relay (1): 250 VAC, 10 amp contact relay
Alarm Relay (1): 250 VAC, 10 amp contact relay
Contact type: Normally open and normally closed contacts (FORM C) Change over
relay
LCD Display 16-Digit Liquid Crystal Display [LCD] with green backlighting
Operating
Temperature 32° F to 122° F [0° C to 50° C]
Memory Backup
EEPROM. Data retention of 10 years minimum
Environmental Printed pc boards conformally coated.
Enclosure: IEC IP65, NEMA 4X - Door closed. IEC IP NEMA - 12 Door open.
Mechanical Two (2) pc boards
Control CPU board: microcontroller and display - low voltage
Terminal power I/O board: transformer, fuses, terminal blocks, relays
% Time - ..............................10%
Feed after Bleed ......... ................10%
Feed after Bleed - Limit ................10 minutes
Limit (Feed & Bleed).... .................10 min limit
Flow Alarm (On/Off).... ........... ........Off
Trip (Rise/Fall) ................................Rise
4 mAmp setting...............................0 µS
20 mAmp setting.............................20,000 µS
Display (µS/PPM TDS) ...................µS
Control (Boiler/Cooling Tower)........Cooling Tower
8.0 Factory Settings
Temperature ...................Fahrenheit
Conductivity Set point ......2000 µS
Delta Differential ...............100 µS
Low Alarm ..................100 µS
High Alarm ..................4000 µS
Feed Mode ..................Pulse Timer
Pulse Timer .................10 seconds
Pulse Count ........... ......1 flow meter count
% Time - Cycle Time ........10 minutes
(866) 433-6682 • (281) 359-8538 • sales@novatech-usa.com • www.novatech-usa.com