User Manual

1
SPECIFICATIONS
Description
Featuring 4
1/2
digits of rate and 8 digits of total, the IT 300N is a
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
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)
SPEED (HZ) 1248
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.
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.
MOUNTING OPTIONS:
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)
Battery Life Expectancy
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
S
tan
db
y
O
perat
i
on
IT 300N A/B/C 10 years
E
xterna
l
or
L
oop
P
ower
RUN TIME
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%.
5 yrs 3.7 yrs 2.7 yrs 1.5 yrs