Liquid Controls IT300N-BBL User Manual

SPECIFICATIONS

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)

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)

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

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)

.98

4.25

(108)

5.25

(133)

5/16

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

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

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)

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

DEFINITIONS

ent Code

: (enter code) This prompt will only appear if the panel lock is ON. Press the ↑ key to increment each digit. Press the ← key to step to the next digit to the left. Press the E key to enter the 4 digit code. If the entered code is correct, the display will advance to the next menu prompt (CLr tot). If incorrect, the display will return to the run mode.

Clr tot

: (clear total) Clears (resets) the totalizer. Press the E key to clear the total and return to

the run mode. Press the M key to skip and advance to the next menu selection.

FAC nnUl

1000

fdeC

: (factor multiplier) Sets the factor multiplier value. Press the ↑ key to select 1, 10,

. Press the E key to enter the displayed value.

: (factor decimal) Sets the decimal location for the factor. This location is restricted to 3 places (59.999). The use of this decimal automatically limits the number of decimal locations allowable in the rate and total to acceptable ranges. Press the ← key to move the decimal. Press the E key to select the displayed decimal location.

faC lInear

linearization option. The

10poInt

: (factor type) This prompt will only appear if the unit is ordered with the 10 point

10 poInt

linearization selection is recommended for flow meters whose K-factors change with different flow rates. This selection allows users to enter up to 10 different frequencies with 10 corresponding K-factors for different flow rates. The setting is used for flow meters whose output is linear over its' entire operating flow range. Press the ↑ key to step to the desired choice. Press the E key to enter the displayed factor type.

100

lInear

No / yes set10pt

Select

: (set 10 point?) This prompt allows the user to skip the 10 point setup routine.

yes

for initial setup or to change the present 10 point values. Select

to skip and

keep the existing values.

faC

: (factor) This prompt appears on all units with linear inputs. The Factor is the number of pulses per unit volume for the flow sensor. The pulses/unit volume is implied by the totalizer descriptor when a descriptor is used. The implied units for the Factor are then as follows:

GAL pulses/gallon LIT pulses/liter FT3 pulses/ft3 M3 pulses/M3 Factors from 0.001 to 59999 may be used. A 0 value for the factor is not allowed and a

warning message will be given. The factor is displayed on the subsidiary (lower) display. Press the ↑ key to increment each digit. Press the ← key to step to the next digit to the left. Press the E key to enter the displayed factor.

DEFINITIONS

(continued)

fr#

: (frequency for point #) This prompt will only appear when 10 point selected. It sets the frequency for each of the 10 points (#). Press the ↑ key to increment each digit. Press the ← key to step to the next digit to the left. Press the E key to enter the desired frequency for point #.

faC#

: (factor for point #) This prompt will only appear when 10 point selected. It sets the factor for each of the 10 points (#). Press the ↑ key to increment each digit. Press the ← key to step to the next digit to the left. Press the E key to enter the desired factor for point #.

NOTE: The display will advance to the next point (Fr#) after each entry of the Fr & Fac until all 10 points are

complete. entering a 0 in the Fr or fac setting will advance the display to the next menu prompt (tdec).

tdeC

: (totalizer decimal) Sets the decimal location for the totalizer. The totalizer decimal is not a dummy decimal and will scale the totalizer display accordingly. (i.e. if the tdec is set in the tenths position (1234567.8), 100 will be displayed as 100.0). The location of the decimal point allows for greater resolution of both the totalizer display and the pulse output. The pulse output advances at a rate dependent on the least significant digit of the totalizer. The totalizer decimal location is restricted to a maximum of 4 places (1234.5678). However, the number of totalizer decimal locations allowable is reduced with each decimal place added to the factor decimal. Press the ← key to move the decimal. Press the E key to enter the displayed decimal location.

Note:

The selection of the factor decimal point limits the available selections for the number of decimal points available for the totalizer. This is automatic.

Enter your selection of the Factor’s decimal point before entering the totalizer decimal point to assure the proper selection of the totalizer decimal point has been made.

tot desC

: (totalizer descriptor) This allows you to illuminate one of the available descriptors on the display (GAL, LIT, FT3, M3 or "blank"). Press the ↑ key to select the descriptor. Press the E key to enter the selected descriptor.

sCale

: (ratemeter scaling) Sets the rate readout. Choose rate per hour (

seconds (

seC

). The scale setting is shown on the main (upper) display. Press the ↑ key to

Hrs

), minutes (

step to the desired choice. Press the E key to enter the displayed scale setting. Note: A rate descriptor corresponding to the above choice will be illuminated on the display.

nnIn

) or

DEFINITIONS

(continued)

r deCloC

: (ratemeter decimal location) Sets the decimal location for the ratemeter. The ratemeter decimal is not a dummy decimal and will scale the rate display accordingly. (i.e. if the r decloc is set in the tenths position (123.4), 100 will be displayed as 100.0). The ratemeter decimal location is restricted to a maximum of 4 places (.1234). However, the number of ratemeter decimal locations allowable is reduced with each decimal place added to the factor decimal. Press the ← key to move the decimal. Press the E key to enter the displayed decimal location. Note: The flow rate indicator will flash “59999” if the computed flow rate exceeds the 59999

display capability of the indicator. Choose a new decimal point location to avoid this.

oUt lo

: (out low) Sets the low setting for the 4-20 mA analog output. Key in the low rate value at which the unit will output 4mA. Press the ↑ key to increment each digit. Press the ← key to step to the next digit to the left. Press the E key to enter the displayed out lo value.

oUt HI

: (out high) Sets the high setting for the 4-20 mA analog output. Key in the high rate value at which the unit will output 20 mA. Press the ↑ key to increment each digit. Press the ← key to step to the next digit to the left. Press the E key to enter the displayed out hi value.

pUlseoUt

count divided by the selected divider. The pulse out can be divided by 1 ( (

d 100

: (pulse out divider) This allows the unit to output a pulse for each least significant total

d 1

), or turned off (

), 10 (

off

). With the divider set at 1, the unit will give a pulse out for every

d 10

increment of the LSD displayed. Note: For maximum battery life, turn the pulse output off when pulse output is not used.

), 100

Selecting the proper pulse output divider may be needed so that the pulse output does not exceed the maximum rate of the pulse output (10 Hz). If the pulse output pulses too quickly a flashing display will result. Pressing the “M” key will result in a display of an error message “E PULSE”. Press the “E” key to return to the run mode.

FrEQ.OUT

4 or 8 Hz. This menu item is skipped if

loC Code

: (pulse out frequency) Sets the pulse output frequency / duration. Selections are: 1, 2,

pUlseoUt

: (lock code) Sets the 4 digit lock code to be entered when the unit prompts

is turned off.

ent Code

This allows the user to gain access to the menu when the unit is locked. Press the ↑ key to increment each digit. Press the ← key to step to the next digit to the left. Press the E key to enter the displayed code.

Record this number for later use!

loC UnIt

: (lock unit) Sets the panel lock ON or OFF. Press the ↑ key to select On or OFF. Press

the E key to enter the displayed selection.

FDEC

RUN MODE

FAC

0000

FAC

FaC

000

YES

If panel lock OFF

RATE

TOTAL

If panel lock ON

Press the M key to enter the programming menu.

If the panel lock is on, you must enter the 4 digit lock code to gain access

to the menu.

ENTER CODE

FACTOR MULTIPLIER

FACTOR TYPE

SET 10PT

selected

CLEAR TOTAL

FACTOR DECIMAL

lInear

10poInt

selected

SET 10PT

1 10 100 1000

oInt

ent Code

If code correct

CLR ToT

FAC nnUL

12345678

10poInt

FACTOR

selected

If code incorrect

lInear

selected

100

Press the

key to increment each individual digit of the code. Press the key to advance to the next digit. Press the E key to enter the displayed code. If the code is correct, display advances to "

clr tot

", if not, display returns

to run mode

Press the E key to clear the totalizer and return to the programming menu. Press the M key to skip and go to next menu item.

Press the key to choose the factor multiplier (1, 10,

100, 1000

). Press the E key to enter the displayed factor multiplier. Press the M key to skip and keep the existing factor multiplier.

Press the

key to step the factor decimal to the desired location. Press the E key to enter the displayed decimal location. Press the M key to skip and keep the existing location

Press the

Press the E key to enter the displayed factor type.

key to choose factor type (

10point

linear

Press the M key to skip and keep the existing factor type.

The

FAC

prompt will only appear if

linear

is selected or if the unit was

ordered without the 10 point linearization option.

Press the

key to increment each individual digit of the factor.

Press the key to advance to the next digit.

Press the E key to enter the displayed factor. Press the M key to skip and keep the existing factor.

The

SET 10pt

prompt will only appear if

10 point

is selected. This allows

users to bypass the 10 point set up and keep the existing values.

Press the key to choose YES or NO. Press the E key to enter the displayedselection. Press the M key to skip (same as selecting NO).

If Fr# = 0

If FAC# = 0

#####

# = 10

Press the

key to increment each individual digit of the frequency for

point #. Press the key to advance to the next digit. Press the E key to enter the displayed frequency. Press the M key to skip and keep the existing frequency. If 0 is entered, the display will advance to the next prompt (tdec).

Press the key to increment each individual digit of the factor for point #. Press the

key to advance to the next digit. Press the E key to enter the displayed factor. Press the M key to skip and keep the existing factor. If 0 is entered, the display will advance to the next prompt (tdec).

PROGRAMMING FLOWCHART

SEC

0000

59999

SEC

234

0000

yes

Continued From

(continued)

TOTAL DECIMAL

TOTAL

DESCRIPTOR

SCALE

(ratemeter)

RATE DECIMAL

LOCATION

OUT LOW

(4mA)

OUT HIGH

(20mA)

GAL

LIT FT3

"blank"

NNIN

HRS

12345678

ToT DESC

SCALE

R DECLoC

oUT Lo

oUT HI

Press the key to step the totalizer decimal to the desired location.

Press the E key to enter the displayed decimal location. Press the M key to skip and keep the existing location

Press the

Press the E key to enter the displayed descriptor. Press the M key to skip and keep the existing descriptor.

Press the Press the E key to enter the displayed scale setting.

Press the M key to skip and keep the existing setting.

Press the Press the E key to enter the displayed decimal location.

Press the M key to skip and keep the existing location

Press the key to increment each individual digit of the out low setting

(4mA value). This will only display on units with Analog Output.

Press the key to advance to the next digit.

Press the E key to enter the displayed value. Press the M key to skip and keep the existing value.

Press the key to increment each individual digit of the out high setting

(20mA value). This will only display on units with Analog Output. Press the key to advance to the next digit. Press the E key to enter the displayed value. Press the M key to skip and keep the existing value.

key to step to the desired totalizer descriptor.

key to step to the desired scale setting.

key to step the ratemeter decimal to the desired location.

DIVIDER

PULSE OUT

PULSE

OUTPUT

FREQUENCY

LOCK CODE

D 1

D 10

D100

oFF

1 H2 2 H2 4 H2 8 H2

D 1

PULSEoUt

1 HZ

freq.out

loc code

loC UnIt

RUN MODE

Press the

Press the E key to enter the displayed divider. Press the M key to skip and keep the existing divider.

Press the Press the E key to enter the displayed frequency.

Press the M key to skip and keep the existing frequency. This will not display if Pulse Out is turned OFF.

Press the key to increment each individual digit of the lock code. Press the key to advance to the next digit.

Press the E key to enter the displayed value. Press the M key to skip and keep the existing value.

Press the key to step to the desired lock setting. Press the E key to enter the displayed lock setting.

Press the M key to skip and keep the existing setting.

key to step to the desired divider for the pulse output.

key to step to the desired frequency for the pulse output.

OPERATION

A suitable pulse producing device or flow meter is wired to one of the three pulse inputs provided on the IT 300N. Only one of these inputs is used in a given application. There are no connections to the two unused pulse inputs.

Isolated magnetic pickups may be connected to terminals 1 and 2. Isolated contact closures may be connected to terminals 5 and 6. Any pulse type may be connected to terminals 9(-) and 10(+).

Power to the unit may be provided by internal batteries, external DC, or the current loop. In all cases, the internal battery will provide for continued operation in the event primary power is lost.

Once properly wired, the operation of the IT 300N is automatic. The flow totalizer is updated every 2 seconds* with the latest total. If no input counts are received the unit remains

in a low power state to conserve power. The flow total may be cleared by the front panel switch sequence or by a contact closure on the remote reset

terminal to circuit common. To reset the unit from the front panel, the following key sequence is required:

Press M “CLr tot” will be displayed (if the panel lock is on, the display will prompt "

Enter the proper code to advance to the

Press E To clear the total. Unit will return to operation The flow rate indicator will measure the flow rate once every 2 seconds* and display the flow rate. If the input pulses are not detected within the delay setting (0.2 seconds), a flow rate of 0 will be indicated. The analog output will be scaled based on the user selected zero and full scale and the measured flow rate. The

analog output is updated every 2 seconds*. The pulse output will generate a burst of pulses every 2 seconds* in accordance with the instrument setup of pulse

scaling.

MAINTENANCE: The only scheduled maintenance for the IT 300N is periodic replacement of the battery. Battery Replacement: 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 battery detector operates correctly with all power options.

clr tot

ent code

prompt)

The battery, or batteries, should be replaced within several weeks of the first occurrence of low battery warning, “BAT”. Left unattended, the unit may become inaccurate, cease to operate or loose setup information or malfunction.

Batteries should be replaced one at a time to avoid interrupting the power. See INSTALLATION section for battery installation instructions.

ERROR MESSAGES

The IT 300N is provided with extensive self checking which assists the user in the location of setup entry errors and in reporting malfunctions or unusual operating conditions. When an error occurs, the display will flash. Press any key to see the error message corresponding to the error that has occurred. Press any key again to acknowledge the error. (If the error can be eliminated by a change of setup values, the unit will automatically advance to the MENU so that the appropriate setup changes can be made).

Table - 2 illustrates the warning message, problem, and recommended corrective actions. Diagnostic Error Messages Table-2

WARNING MESSAGE CAUSE CORRECTIVE ACTION

RATE ER

Rate Low set Set Rate Hi greater higher than Rate Hi than Rate Lo

FAC ERR

Factor = 0 Set in correct Factor

“BAT” Descriptor Low Battery Replace battery(ies)

E total

E RATE

E pulse

Total rollover None required Rate exceeds 59999 Use lower rate dec point Pulse out Overflow Use different pulse scaler or

totalizer decimal point

ANALOG OUTPUT CALIBRATION

Full Scale Adjust:

The 4-20 mA has been accurately set to 20.000 mA by the factory. No adjustments should be required. The 4-20 mA output may be verified periodically by installing a digital milliamp meter in series with the analog

output and simulating a full scale or over range flow rate. The Full scale adjustments may be trimmed to 20.000 mA +/- .020 mA if required. To adjust, locate the span adjust

potentiometer mounted on component side of PCB, above the display to the left (rear view). Turn clockwise to increase the current output, counter-clockwise to reduce.

The 4 mA is set automatically.

DIMENSIONS:

WIRING:

Liquid Controls IT300N-BBL User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual