Kobold ZOK-ExK, Operating Manual

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ZOK-E/-Z
ZOK K14/0917 Page 55
11. Technical Details
External power supply: 5…28 V
DC
(without using the analogue output)
8…28 V
DC
(with using the analogue output)
12…28 V
DC
with relay output
max. power consumption: with DC supply voltage
approx. 70 mA (with full backlight, without outputs)
See table on page 55 for details
Battery (battery for operation): 3.6 V/2200 mAh Lithium size AA
Battery life in battery mode:
dependant on the chosen sleep mode
max. 17 months, min. 3 months
Display: LCD, graphic 128x64, backlight adjustable
(only with external supply)
Size of main display value: 12.5 mm
Display resolution of main
display value:
5 digits, based on measuring range end value
Engineering units displayed: litres, mililitres, gallons (US or UK), barrel, m
3
,
user defined engineering units displayed
Input scaling range: 0.001…99,999.999 with three floating decimal points
Mounting: meter mount, wall, surface, pipe or panel mount
Measuring inputs: 2 x pulse input
type: NPN, PNP, NAMUR, Reed, Hall, active
(configureable with software)
Input frequency 0.1…1000 Hz,
High-low-threshold 1 V
DC
, max. input amplitude 30 V
DC
Basic accuracy of
flow measurement:
< 0.1% of measuring value
(the accuracy of the displayed value depends on the
adjusted scale and display resolution)
Sensor supply: 8 V
DC
, max. 30 mA (with external supply > 10 V
DC
)
Arithmetic functions: A+B, A-B with scaleable analog output
Outputs
Status output: transistor output, Push pull (PP), max. 300 mA,
overload protection
Outputs ZOK-Z2
Relay outputs (only –Z2): potential-free changeover contacts, max. switching
voltage 230 V
AC/DC
, max. current load dependent (see
diagram page 51)
Switching outputs
(only –Z2/-Z3):
transistor output, PNP, NPN or push-pull (PP), with
software configureable,
max. output current: 300 mA (source/sink),
overload protection