Liquid Controls IT300N User Manual
CONTENTS
Specifi cations
..............................
2
Theory of Operation
Wiring
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4
Typical Applications
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Analog Output Calibration
................................................
or loop powered indicator capable of accepting magnetic pickup,
The IT 300N uses the 4-20mA loop to provide power.
Specifi cations
Supplied with 2 C size Lithium battery pack.
Voltage: 8.5 to 30 VDC
Current: Less than 5 mA
Protection: Reverse Polarity Protection on DC Power Input
Voltage: 8.5 to 30 VDC
Protection: Reverse Polarity Protection on Current Loop
Loop Burden: 8.5V maximum
tions at equipment duty cycles
Idle 2hrs/day 8hrs/day 24hrs/day
standby-operation
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.
Example: A pulse output of 0.06 sec. duration, once per
second, would derate the battery life by 20%.
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
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, ÷1, ÷10, ÷100
or OFF
NOTE: Select OFF for max. battery life.
ACCURACY
0.01% Reading, ±1 count
Temperature Drift: 50 ppm/°C Worst Case
OPERATING TEMPERATURE
-22°F (-30°C) to + 158°F (70°C)
0 - 90% Noncondensing
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
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
battery life.
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
battery life.
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
The IT 300N uses the 4-20 mA loop power as its primary
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
standby-operation
BATTERY INSTALLATION and REPLACEMENT
All meter mounted confi gured IT 300N models are shipped without the batteries installed. When using external
To install the batteries, begin by locating the battery holder. This requires opening the enclosure cover and removing
the IT 300N to expose the battery holder.
The plus terminal of the battery is marked with a (+) symbol stamped into the battery holder. Be sure to install the
The IT 300N has a battery monitor feature which illuminates when the lithium battery voltage approaches its end
of life. A descriptor, “BAT”, illuminates when the battery voltage falls below this predetermined value. The low bat-
tery detector operates correctly with all power options.
The battery, or batteries, should be replaced within several weeks of the fi rst occurrence of low battery warning,
(left arrow) key to save the totalizer. The display will show "
If the display starts to fl ash after the "
to fl ash memory. At this point you must record the totalizer and setup information and re-enter the setup data after
the new battery(ies) is(are) installed.
6 5 4 3 2 1
Rear View
Battery
789101112
BATPAC
K
Connector
Jumper momentarily to reset unit to factory default values.
4.63
(117)
3/4 NPT
(2) HLS
5.00
(127)
5/16
4.25
(108)
5.25
(133)
E
M
5.00
(127)
To access terminals, unscrew cover and loosen 2 panel screws.
(If screws are removed, spacers may drop out.) Terminals are on
bottom side of PC board.
4.92
(125)
4.92
(125)
4.21
(107)
4.21
(107)
Mounting holes molded
directly under cover screws.
Max. screw head .29"
(Typ. 4 places)
TOP VIEW
PANEL INSTALLED
E
M
.98
(25)
1.97
(50)
.18
(5)
.43
(11)
SIDE VIEW
To access terminals,
remove cover and 4 panel
screws. Terminals are on
bottom side of PC board.
Panel Screws (4 places)
IT 300N-3IT 300N-2 & IT 300N-5
INSTALLATION
3.062" (77.77)
Dia. Cutout
3.582" Dia. Bolt Circle
.125" Holes to be 120
° Apart
Outside Dotted Line Shows
Outside Panel Dimension
(4.00" Diameter)
120°
.10
(2.54)
4.00
(101.6)
1.7
(43)
2.875
(73)
IT 300N-0 IT 300N-1
E
M
3.0120 DIAMETER
.900
(22.8)
.992
(25.2)
Mounting holes
.125 Drill (2 places)
.375 Nylon Spacer
Supplied
1.8
(46)
2.875
(73)
.10
(2.5)
.375
(9.5)
.900
(22.8)
.992
(25.2)
6 5 4 3 2 1
Rear View
Battery
Jumper Momentarily
To Initialize
789101112
BATPACK
Connector
BATPACK
2.093
(53)
1.75
(44.5)
1.625
(41)
.812
(20.6)
2.125
(54)
1.10
(28)
1.0
(25.4)
Mounting
Holes
Fig 1
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