Kera SELENA - SYSTEM SPECIFICATIONS AND SAFETY; ELECTRICAL SPECIFICATIONS

SELENA Multifunctional LED Clock USER MANUAL V32D
KERA TECHNOLOGIES INC. 2013 www.ledclocks.com
51
ELECTRICAL SPECIFICATIONS
Supply voltage ............................... 120 VAC, 50/60Hz or optional 100V or 208-240VAC, 50/60Hz
or optional 12/24V AC/DC
Power consumption....................... appx. 6VA max. for 4 “ and 18VA Max for 7 “ and models with text
Fuse............................................... Slow Blow, 20mm, 0.25A for 120V supply, 0.125A for 208-240V supply.
Power backup................................ 14-Day Battery-less, self-recharging backup
or optional: 10-Year Lithium battery
Ambient temperature..................... standard 0C (32F) to +60C (+140F) . Optional –40C (-40F) to +80C (+176F)
Ambient humidity .......................... 85%RH max., non-condensing
Display ........................................... LED Super or Ultra Bright , 4 or 6 digits (other sizes optional)
Internal relays ................................ Optional up to 2 x SPDT with 0.047uF/120ohm snubber, 10Amp/250VAC max.
Internal Buzzer .............................. Piezo, Single Tone, 85dB min. Optional external sirens and buzzers .
Short Timer preset range .............. 0 to 99Hrs:59min:59sec. up or down
Long Timer preset events.............. Up to 32 events per each different day, 7 day
Event duration programmability .... 0 to 59 seconds in 1 sec. steps or extended till next event
Timers resolution ........................... 1 sec. Standard, 1/100 sec. Optional
Clock accuracy .............................. +/- 20 ppm standard or +/- 2 ppm optional in stand-alone mode.
Event counter range ...................... programmable 0 to 9999(99) counts up or down
Counter/Timer input spec’s ........... Dry contact, min. pulse width 2 msec. Max. pulse frequency 250Hz
Internal Temperature probe........... NTC Thermistor 1%, 50kohm or 100kohm, -40C (-40F) to 124C (255F).
....................................................... Other optional.
External Temperature probe ......... Remotely wired up to 500 Ft. (150M)
Option 1. NTC Thermistor 1%, 50kohm, -40C (-40F) to 140C (284F)
Option 2. NTC Thermistor 1%, 100kohm, -40C (-40F) to 140C (284F)
Option 3. RTD PT1000 , 0.12%, -50C (-58F) to 150C (302F)
Option 4. RTD PT1000 , 0.12%, -50C (-58F) to 450C (842F)
Temp. test/preset range ................ Option 1: -40C (-40F) to 101.6C (215F)
Option 2: -50C (-58F) to 537.7C (999.9F)
Temp. test resolution..................... 0.1C (0.1F)
Temp. readout resolution .............. 1C (1F) or 0.1C (0.1F) depending on options