Liquid Controls IT300N-BBL User Manual
SPECIFICATIONS
S
E
Description
Featuring 4
battery powered indicator capable of accepting magnetic
pickup, DC pulse and switch closure inputs. The unit provides a
loop powered 4-20mA output. The IT 300N uses the 4-20mA
loop to provide power when this output is used.
Specifications
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
1/2
digits of rate and 8 digits of total, the IT 300N is a
Battery Life Expectancy
RUN TIME
Idle 2hrs/day 8hrs/day 24hrs/day
IT 300N A 5 yrs 4.5 yrs 3.5 yrs 2.1 yrs
IT 300N A 4 5 yrs 3.7 yrs 2.7 yrs 1.5 yrs
IT 300N B/C
tandby Operation
IT 300N A/B/C 10 years
xternal or Loop Power
PART NUMBER
All of the above values are calculated with the pulse output ON.
Turn the pulse output OFF to prolong battery life up to 30%.
DISPLAY:
Rate Display: (selectable decimal)
4.5 Digits (59999), 0.35" High, Display updates once every
two seconds
Rate Descriptors: /SEC, /MIN, /HR
Min. Input Frequency: 5 Hz (delay of 0.2 seconds)
Totalizer Display: (selectable decimal)
8 Digits (99999999), 0.2" High
Totalizer Descriptors: GAL, LIT, FT3, M3, "blank"
Warning Displays: Low battery warning
PULSE OUTPUT:
The pulse output advances with the least significant digit of
the totalizer or decimal multiples there of (see Pulse output
divider).
Type: Isolated photomos relay
Max. voltage (off state): 30 VDC
Current (on state): 100mA
Pulse Duration: Selectable (see below)
Pulse Output Rate: Selectable (see below)
5 yrs 3.7 yrs 2.7 yrs 1.5 yrs
ACCURACY:
0.01% Reading, ±1 count
Temperature Drift: 50 ppm/°C Worst Case
ENVIRONMENTAL:
-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: 30 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
CAUTION: 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
CAUTION: Sustained contact closure will shorten
battery life.
K-FACTOR
Range: 0.001 to 59999
Decimal Point Locations: XX.XXX to XXXXX
Factor Multiplier: Multiplies entered K-Factor by 1, 10, 100,
1000.
10 Point Linearization Option
This feature allows the user to enter 10 different frequencies
with 10 different corresponding K-Factors to linearize non
linear signals.
ANALOG OUTPUT:
Type: 4-20 mA follows rate display, Two wire hookup
Accuracy: 0.15% Full Scale at 20° C
Temperature Drift:
50 ppm/°C Typical
200 ppm/°C Worst Case
Reverse Polarity Protected
NOTE:The IT 300N uses the 4-20 mA loop power as its power
source when this output is used.
SPEED (HZ) 1248
MOUNTING OPTIONS:
Min. on/off (msec) 500 250 125 62.5
Pulse output divider: User selectable, ÷1, ÷10, ÷100 or OFF
NOTE: Select OFF for max. battery life.
Explosion Proof - Class I, Division I, Groups B, C & D
Class II, Division I, Groups E, F & G
R- Wall Mount - NEMA 4X Enclosure
(unit mounted on cover)
1
INSTALLATION
Battery Installation and IT 300N Initialization:
All meter mounted IT 300N models are shipped with the batteries installed. When using external BATPACK,
mount within 12" and plug connector into 3 position square posts (see Fig 1). Polarity is not a concern because
center is common. The unit will have to be initialized and operating parameters entered.
CAUTION : All IT 300N models are provided with two or more sources of power. The power should not be
interrupted when changing batteries. For models with two batteries, change one battery at a time. If all power
sources are interrupted, information will be lost and the unit will have to be re-initialized as described below.
To install the battery, begin by locating the battery holder. The IT 300N-2, 3 and 5 require 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
battery(ies) correctly.
To Initialize, Locate the “initialize” terminals on the IT 300N PCB (see Fig1). Using a small length of wire, temporarily jumper across the initialize terminals. The unit will respond by showing its software version number and then
illuminating the LCD display. See Programming Flowchart to setup desired operating parameters.
Fig 1
.900
(22.8)
Mounting holes molded
directly under cover screws.
Max. screw head .29"
(Typ. 4 places)
Rear View
789101112
.992
(25.2)
4.21
(107)
.992
(25.2)
M
E
Battery
Mounting holes
.125 Drill (2 places)
.375 Nylon Spacer
Supplied
BATPACK
Connector
6 5 4 3 2 1
Jumper Momentarily
To Initialize
3.0120 DIAMETER
.900
(22.8)
.375
(9.5)
.10
(2.5)
To access terminals,
remove cover and 4 panel
screws. Terminals are on
bottom side of PC board.
1.8
(46)
2.875
(73)
BATPACK
2.093
(53)
1.75
(44.5)
2.125
1.625
(54)
(41)
.812
(20.6)
Mounting
Holes
Outside Dotted Line Shows
Outside Panel Dimension
(4.00" Diameter)
IT300NIT300NR (WALL MOUNT)
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.
5.00
(127)
120°
3.582" Dia. Bolt Circle
.125" Holes to be 120° Apart
3.062" (77.77)
Dia. Cutout
3/4 NPT
(2) HLS
.10
(2.54)
4.00
(101.6)
1.10
(28)
4.63
(117)
(43)
1.0
(25.4)
1.7
2.875
(73)
4.21
(107)
PANEL INSTALLED
M
E
4.92
(125)
TOP VIEW
Panel Screws (4 places)
4.92
(125)
.43
(11)
.18
(5)
SIDE VIEW
1.97
(50)
(25)
5.00
(127)
M
.98
E
4.25
(108)
5.25
(133)
5/16
2
THEORY OF OPERATION
Flow rate equation: Flow total equation:
Flow Rate Indication =
Input Frequency
FAC x FAC mul
x Time Scaler
Flow Total =
Sum of Input Pulses
FAC x FAC mul
Where Time Scaler is equal to: 1 for rate per second read out
60 for rate per minute read out
3600 for rate per hour read out
10 Point Linearization Option:
A 10 point linearization table is used to construct a curve describing the relationship of K-Factor and input
frequency. The measured input frequency is used to access the table. A linear interpolation of adjacent point pairs
is used to arrive at the K-Factor at that input frequency. The flow rate and total are then computed based upon the
K-Factor for that measurement sample.
WIRING
Several typical applications of the IT 300N are shown below. Please observe that the various pulse inputs and
power options may be intermixed in many ways to solve common applications. The isolated pulse output may be
freely used so long as proper polarity is observed.
Caution: When 4-20 mA loop is utilized, the power wiring to the loop should always be to terminals (+) 12 and (-)
11. Accidental wiring to (+) 12 and (-)6 should be avoided since excessive current flow may result.
Caution: The magnetic pickup input and contact closure input require isolated sensors for proper operation.
Accidental connections to earth may result in erroneous operation of the analog output and/or excessive
current flow.
Caution: Accidental connections from circuit common (3 or 6) to earth or terminal (11) may result in erroneous
operation of the analog output and/or excessive current flow.
TYPICAL APPLICATIONS
CONTACT INPUT / PULSE OUTPUT / BATTERY POWERED
41
123456
KAL1B
Totalizer
4-20mA (+)/DC In (+) 12
789101112
4-20mA (-) 11
Opto Input (+) 10
Opto Input (-) 9
Opto Out (+) 8
Opto Out (-) 7
654321
1 Mag Input 1
2 Mag Input 2
3 Shield/GND
4 Reset Input
5 Contact Input
6 Common/ DC In (-)
Flowmeter with
Switch Closure Output
MAG INPUT / BATPACK POWERED
BATPACK
789101112
BATPACK PLUGIN
CONNECTOR
6 5 4 3 2 1
Reset Switch
Remote
+
Strip Chart
Recorder
12 VDC
Ext. Battery
Power
Supply
Power
Supply
MAG INPUT / 4-20mA LOOP POWERED
24 VDC
-
-
+
Power
Supply
KEP
115-24
789101112
4-20mA (+)/DC In (+) 12
4-20mA (-) 11
Opto Input (+) 10
Opto Input (-) 9
Opto Out (+) 8
Opto Out (-) 7
1 Mag Input 1
2 Mag Input 2
3 Shield/GND
4 Reset Input
5 Contact Input
6 Common/ DC In (-)
MAG INPUT / DC POWERED
(without 4-20mA Loop Option)
+
-
or
789101112
6 5 4 3 2 1
654321
Remote
Reset Switch
Turbine Meter with
Mag Pickup
4-20mA (+)/DC In (+) 12
4-20mA (-) 11
Opto Input (+) 10
Opto Input (-) 9
Opto Out (+) 8
Opto Out (-) 7
1 Mag Input 1
2 Mag Input 2
3 Shield/GND
4 Reset Input
5 Contact Input
6 Common/ DC In (-)
Turbine Meter with
Mag Pickup
VDC In (+) 12
Do Not Use 11
Opto Input (+) 10
Opto Input (-) 9
Opto Out (+) 8
Opto Out (-) 7
1 Mag Input 1
2 Mag Input 2
3 Shield
4 Reset Input
5 Contact Input
6 VDC In (–)
Turbine Meter with
Mag Pickup
3
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