FlowLine EchoPulse LR30 Series Manuel utilisateur

Flowline, Inc. | 10500 Humbolt Street, Los Alamitos, CA 90720 p 562.598.3015 f 562.431.8507 w flowline.com AD301799 Rev A

Addendum for LR30 & LR31 Series

CONFIGURE LR30 OR LR31 TO A PRESSURE TRANSMITTER RANGE

Pressure Transmitters have a fixed span so the 4-20mA output cannot be changed and the application must

accept the span as is. In a typical application where a pressure transmitter is used, the location of 4mA will be

at the bottom of the tank (see below). The 20mA will be located well above the top of the tank due to the fixed

span of the device (see below).

Radar transmitters have a span that is adjustable to match the shape of the tank. Typically, the 4mA will be

located at the bottom of the tank and the 20mA will be located at the Full level of liquid (see below).

4-20mA span w/ Pressure Transmitter 4-20mA span w/ Radar Transmitter

The radar transmitter can be configured to match the fixed span of a pressure transmitter. Follow the

instructions below to configure your radar transmitter like a pressure transmitter.

STEP 1 – IDENTIFY THE SPAN OF THE PRESSURE TRANSMITTER

To span DataView™ to the full span of the pressure sensor, you will need the following information:

 Maximum Pressure (MP) of the sensor in psi

 Specific Gravity (SG) of the liquid

 Units of operation (Feet or Meters)

 Maximum Liquid Height (MLH)

o The equivalent height of liquid (in a virtual tank) at the full span of the transmitters (at 20mA)

 To calculate MLH in Feet MLH = (MP x 2.31) / SG

 To calculate MLH in Meters MLH = (MP x 0.704) / SG

EchoPulse®+ EchoPro®

Radar Liquid Level Transmitter

| 2 AD301799 Rev A

Example in Feet:

 If MP = 15 psi and SG = 1.05, then

 MLH = 15 x 2.31 / 1.05 = 33.00 ft...

 MLH = 33.00 feet full

Example in Meters:

 If MP = 15 psi and SG = 1.05, then

 MLH = 15 x 0.704 / 1.05 = 10.057 m...

 MLH = 10.057m full

STEP 2 – MEASURE THE SENSOR HEIGHT OF THE RADAR TRANSMITTER

Measure the distance from Empty to the measurement point of the radar transmitter. With the EchoPulse

LR30 series, the measurement point is the bottom of the sensor. This measurement is critical so accuracy is

of upmost importance.

Note: The 4mA location for the pressure transmitter will be slightly off the bottom of the tank. Take this into

account when calculating the Sensor Height Setting.

AD301799 Rev A 3 |

STEP 3 – DETERMINE THE OFFSET DISTANCE

The difference between the operational range of the tank and the actual span of the pressure transmitter is the

Offset Distance. Simply subtract the Sensor Height (SH) from the Maximum Liquid Height (MLH) to find the

Offset Distance.

Example in Feet:

 SH = 20.0 feet

 MLH = 33.00 feet full

 Offset Distance = MLH - SH

o 33.00‘ – 20.00‘ = 13.0‘

o Offset Distance = 13.0‘

Example in Meters:

 SH = 6.100m

 MLH = 10.057m full

 Offset Distance = MLH - SH

o 10.057m – 6.100m = 3.957m

o Offset Distance = 3.957m

STEP 4 – RECORD THE FACTORY DISTANCE ADJUST VALUE

The radar transmitter has a factory set Distance Adjust value. This is one of the settings you will change in the

following steps. Prior to the next steps, it is required to record this setting so that in the future you need to

change the setting back to a normal span, you will need this setting.

1. From the Main Screen, press Enter to advance

into the Main Menu.

2. Press Right Arrow repeatedly until the arrow

is next to Service (4).

3. Press Enter to advance into the Service

Menu.

4. Press Right Arrow repeatedly until the menu

shows Distance Adjust. (4.9).

5. Record the Distance Adjust. setting.

6. When done, press ESC to return to the Main

Menu, and press ESC a second time to return

to the Main Screen.

| 4 AD301799 Rev A

STEP 5 – CALCULATE THE NEW DISTANCE ADJUST

The New Distance Adjust is when you add the Offset Distance to the Factory Distance Adjust

 New Distance Adjust = Offset Distance + Factory Distance Adjust

o 13.00‘ + -0.61‘ = 12.39‘

o 3.957m + -0.187m = 3.770m

STEP 6 – CONFIGURE THE RADAR TRANSMITTER

The radar transmitter will have 6 settings to configure: Empty, Full, Range, Dead Band, Distance Adjust and

Display. Refer to the Radar Trasnmitter’s Quick Start and/or Manual for detailed information in setting the

actual values.

EchoPulse LR30 Series EchoPro LR31 Series

 Empty = Max. Liquid Height (MLH) value

 Full = 0.00 feet or 0.000 meters

 Range = Max. Liquid Height (MLH) value

 Dead Band = Leave in Factory Setting

 Distance Adjust = Change to New Distance Adjust

 Display = Set display to Height

 Sensor Heigth = Max. Liquid Height (MLH) value

 Fill-Height = Max. Liquid Height (MLH) value

 Range = Max. Liquid Height (MLH) value

 Dead Band = Leave in Factory Setting

 Distance Adjust = Change to New Distance Adjust

 Display = Set display to Height

Example in Feet:

 Empty = 33.00‘

 Full = 0.00‘

 Range = 33.00‘

 Dead Band = 1.00‘

 Distance Adjust = 12.39‘

Example in Meters:

 Empty = 10.057m

 Full = 0.000m

 Range = 10.057m

 Dead Band = 0.300m

 Distance Adjust = 3.770m

Example in Feet:

 Sensor Height = 33.00‘

 Fill-Height = 33.00‘

 Range = 33.00‘

 Dead Band = 1.00‘

 Distance Adjust = 12.39‘

Example in Meters:

 Sensor Height = 10.057m

 Fill-Height = 10.057m

 Range = 10.057m

 Dead Band = 0.300m

 Distance Adjust = 3.770m

Flammable, Explosive or Hazardous Applications:

EchoPulse®LR30 series is available only as a General Purpose transmitter and EchoPro® LR31

series is available as an Intrinsically Safe transmitter only. This addendum is solely designed to

show how to configure EchoPulse® and EchoPro® as a pressure transmitter. Refer to the

products individual manual for information pertaining to all electrical wiring of the transmitter in

accordance with applicable NEC codes and safety requirements.

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