Liquid Controls IT300N - Manual (Page 3)

1
SPECIFICATIONS
Description
Featuring 5 digits of rate and 8 digits of total, the IT 300N is a battery
or loop powered indicator capable of accepting magnetic pickup,
DC pulse or switch closure inputs from pulse producing fl owmeters.
The IT 300N uses the 4-20mA loop to provide power.
Specifi cations
Power:
BATTERY POWERED
Supplied with 2 C size Lithium battery pack.
EXTERNAL POWER INPUT
Voltage: 8.5 to 30 VDC
Current: Less than 5 mA
Protection: Reverse Polarity Protection on DC Power Input
LOOP POWERED
Voltage: 8.5 to 30 VDC
Protection: Reverse Polarity Protection on Current Loop
Loop Burden: 8.5V maximum
BATTERY LIFE EXPECTANCY:
Expected Years of Operation for IT 300N of various powering op-
tions at equipment duty cycles
MODEL RUN TIME
Idle 2hrs/day 8hrs/day 24hrs/day
IT 300N-A 10 yrs 10 yrs 10 yrs 9.1 yrs
IT 300N-A-4 10 yrs 10 yrs 10 yrs 8.4 yrs
IT 300N-B/C 10 yrs 10 yrs 10 yrs 10 yrs
standby-operation
IT 300N -B/C Indefi nite operation when externally powered
loop power
NOTE: Battery shelf life is rated at 10 years by manufacturer
Life expectancy based on rated battery capacity at
20°C
The above table is shown with pulse output inactive.
Use of pulse output shortens battery life.
Example: A pulse output of 0.06 sec. duration, once per
second, would derate the battery life by 20%.
DISPLAY:
Rate Display: (selectable decimal)
5 Digits (99999), 0.35" High, Display updates once per second
with battery power, 8X per second with DC or Loop power
Rate Descriptors: /SEC, /MIN, /HR
/MIN, /HR, /DAY with "D" option
Min. Input Frequency: 0.01 Hz to 10 Hz (selectable delay of 0.1
to 99.9 seconds)*
Selectable Rate Display Damping
Totalizer Display: (selectable decimal)
8 Digits (99999999), 0.2" High
Totalizer Descriptors: GAL, LIT, FT3, M3, "blank"
GAL, BBL, MCF, M3, "blank" with "D"
option
Warning Displays: Low battery warning
PULSE OUTPUT:
The pulse output advances with the least signifi cant digit of the
totalizer or decimal multiples there of (see Pulse scale divider).
Type: Isolated photomos relay
Max. voltage (off state): 30 VDC
Current (on state): 100mA
Pulse Duration: Selectable 0.5, 0.25, 0.125, 0.0625 seconds
Pulse Scale divider (Pulscale): User selectable, ч1, ч10, ч100
or OFF
NOTE: Select OFF for max. battery life.
ACCURACY:
0.01% Reading, ±1 count
Temperature Drift: 50 ppm/°C Worst Case
ENVIRONMENTAL:
OPERATING TEMPERATURE
-22°F (-30°C) to + 158°F (70°C)
HUMIDITY
0 - 90% Noncondensing
INPUTS:
MAGNETIC PICKUP INPUT
Frequency Range: 0 to 3500 Hz
Trigger Sensitivity: 10 mV p-p
Over Voltage Protected: ± 30 VDC
OPTO-ISOLATED DC PULSE INPUT
High (logic 1): 4-30 VDC
Low (logic 0): Less Than 1 VDC
Minimum Current: .5 mA
Hysteresis: 0.4 VDC
Frequency Range: 0 to 5 kHz
Min. Pulse Width: 0.1 msec
CONTACT CLOSURE INPUT (contact closure to common)
Internal Pullup Resistor: 100 KΩ to +3.6 VDC
High (logic 1): Open or 4-30 VDC
Low (logic 0): Less Than .5 VDC
Internal Switch Debounce Filter: 0 to 40 Hz
NOTE: Sustained contact closure will shorten
battery life.
RESET INPUT (contact closure to common)
Internal Pullup Resistor: 100 KΩ to +3.6 VDC
High (logic 1): Open or 4-30 VDC
Low (logic 0): Less Than .5 VDC
Minimum On : 25 msec
NOTE: Sustained contact closure will shorten
battery life.
K-FACTOR
Range: 0.001 to 99999999
Decimal Point Locations: XXXX.XXXX to XXXXXXXX
20 Point Linearization Option
This feature allows the user to enter 20 different frequencies
with 20 different corresponding K-Factors to linearize non linear
signals.
ANALOG OUTPUT:
Type: 4-20 mA follows rate display, Two wire hookup
Accuracy: 0.025% Full Scale at 20° C
Temperature Drift: 50 ppm/°C Typical
Reverse Polarity Protected
Update Rate: 8 times/second
NOTE: The IT 300N uses the 4-20 mA loop power as its primary
power source when this option is used. The battery is still
required for standby battery operation.
DATA STORAGE:
Setup Information: Stored in fl ash memory
Totalizer: Stored in battery backed RAM but can be saved to
fl ash memory by operator for recall after battery change out.
* Slow input pulse rates, large delay setting and internal math
operations may delay the update rate of information.
Idle 2hrs/day 8hrs/day 24hrs/day
IT 300N-A 10 yrs 10 yrs 10 yrs 9.1 yrs
IT 300N-A-4 10 yrs 10 yrs 10 yrs 8.4 yrs
standby-operation
loop power