Oval EL0122, Instructions Manual

Page: 24 / 28

E-122-8-E
11. GENERAL SPECIFICATIONS
ITEM DESCRIPTION
Mode EL0122 EL0123
Display
Display Type LCD Characters: 12.7mm high
Variables Displayed
Scrolls through available variables with MODE button
8-digit nonresettable Total flow
5-digit hourly Flowrate
5-digit per-minute Flowrate
7-digit resettable Total flow
Backup Function Retains variables and parameters on the counter display in an internal E 2 PROM.
Battery Life
None (standard)
(Model provided with a battery for lighting the
LCD when power is off: One year approx.)
4 years approx.
Input
Signal
Power to Pulse
Generator
13.5V or 24V 50mA with overcurrent
protection
None
Trigger Level 3VDC, hysteresis 0.8VDC 2.2V, hysteresis 0.5VDC
Pulse Response
200Hz (contact-closure input 50Hz): standard
Can follow up to 2kHz by use of 1/10 or 1/100 frequency reduction.
Output
Signal
Pulse
Output
Selection Factored (synced with display)=standard, or sync with input (unfactored)
Output
Signal
Open collector, optically isolated Open collector
Capacity 30V DC, 50mA max. 30V DC, 10mA max.
"ON" Level 1.5V DC max.
Pulse Width 1 ms approx. (standard)
Analog
Output
Output
Signal
4 to 20mA DC and 1 to 5V DC
None
Load
Rasistance
Current output: 350 Ω max.
Voltage output shorted: 600 Ω max.
Accuracy ± 0.1% of F.S. (temp. coeff. 0.015%/℃)
Ripples Within 1% of F.S.(at 10% of F.S.flowrate)
Time Const. 2.5sec (standard)
Hi/Lo
Alarm
Output Sig. Non-contact relay × 2 points
Capacity 230VAC/240VDC 200mA
"ON"
Resistance 16
Ω max. (Leak current 1µA min. at "OFF")
Ambient Temperature -10 to +50 ℃
Insulation Resistance
Greater than 10MΩ at 500V DC across power
terminals bundled and GND terminal
Greater than 10M Ω at 500V DC
across power terminals bundled
and uncharged metallic parts
Test Voltage
1500V AC for one minute across power
terminals bundled and GND terminal
1000V AC for one minute
across power terminals bundled
and uncharged metallic parts
Power Consumption 16VA max. None
Weight 0.4 kilogram, approx. 0.2 kilogram, approx.
Enclosure Molded synthetic resin frame + aluminum housing
Finish Munsell N1.5 or equiv.
1. As for replacement dedicated batteries, contact the nearest OVAL sales office in your area.
2. In Model EL0123 applications where input signal is a voltage pulse (requiring a power supply
to the pulse generator), or open collector pulse (requiring a power supply to the pulse
generator) and a current pulse, an additional power supply to the pulse generator is needed.