Evikon PluraSens E2418DF Manuale utente

PluraSens®

Differential pressure transmitter

E2418DF

User Manual

E2418DF Rev 14.08.2023

Table of contents

Speciﬁcations 3

Product description 4

Safety requirements 4

Operating conditions 4

Installation and connections 5

Delivery set 8

Order code for E2418DF options 8

Conﬁguring 8

Return to default settings 9

Emergency mode 10

Modbus RTU Communication 10

RS485 Communication parameters 12

Warranty 13

Manufacturer contacts 13

E2418DF Rev 14.08.2023

Speciﬁcations

Sensing method

Thermal microﬂow

Detection ranges

E2418-DF-50: -50...+50 Pa

E2418-DF-500: -500...+500 Pa

Resolution

0,1 Pa

Gas ﬂow through sensor

23 ml/min for ±50 Pa range

100 ml/min for ±500 Pa range

Zero point accuracy

± 0,2 Pa, stability < 0,1 Pa / year

Span accuracy

±3% of reading

Temperature effect

< 0,5% of reading per 10°C

Atmospheric pressure effect

< 0,1 % of reading per hPa

Analog outputs

2 × 4-20 mA or 0-10 V, user settable

Digital interface

RS485, Modbus RTU protocol

Load resistance

RL < (Us - 3 V) / 22 mA for 4-20 mA

RL > 100 kOhm for 0-10 V mode:

Operating conditions

-20...+80 °C, 35…85%RH, without condensation

Aggressive gases or oil, residential or business spaces

Power supply

12…36 VDC (default)

24 VAC as option

Power consumption

< 2 VA

Electromagnetic compatibility

According to 2014/30/EU:

EN 61000-6-3:2020, EN 61326-1:2013(EMC, emissions)

EN 61000-6-1:2019, EN 61000-6-2:2019(EMC, Immunity)

Enclosure

Grey ABS 82×80×55 mm, IP65

E2418DF Rev 14.08.2023

Product description

Differential pressure transmitter-regulator E2418DF is a member of the new PluraSens®

family of multifunctional measurement instruments. The transmitter is intended for

measurement of pressure of air and non-aggressive gases with superb accuracy and no

offset drift.

The differential pressure is measured by a thermal sensor element using ﬂow-through

technology. Compared with membrane based sensors, the method provides an extended

dynamic range, better long-term stability and improved repeatability, especially near zero.

E2418 features two independent analog outputs OUT1 and OUT2 user-selectable to 4-20

mA or 0-10 V. RS485 Modbus RTU digital communication interface allows easy instrument

conﬁguration and integration into various automation systems.

Safety requirements

Always adhere to the safety provisions applicable in the country of use.

Do not perform any maintenance operation with the power on. Do not let water or foreign

objects inside the device.

Operating conditions

The device should be used in explosion-safe (non ATEX -rated) indoor areas, without

aggressive gases in the atmosphere.

E2418DF Rev 14.08.2023

Installation and connections

Unscrew four lid screws and detach the lid from the detector.

Fix the detector on a wall by screws, using cross-shaped mounting lugs supplied with the

instrument (see dimensional drawings below).

To connect the device with measurement point, use the hoses of appropriate diameter (4

or 6 mm) and length. Put one end of the hose on the ﬁtting in the bottom part of the device

and ﬁx the other end in the selected measurement area. The port marked with + (plus)

should be connected with the area of higher pressure (e.g. before air ﬁlter), the one marked

with - (minus) should be connected to the lower pressure area (e.g. behind air ﬁlter).

NB! The connecting hoses should not be squeezed or folded.

The connection diagram of the device is shown below.

NOTE! All dimensions are in millimeters.

E2418DF Rev 14.08.2023

Plug the power cable and connect the analog outputs and/or digital interface terminals to

the relevant devices according to the connection diagram and table.

PCB without PSU and relays

Jumpers

OUT1 type (open: 4-20 mA; closed 0-10 V)

OUT2 type (open: 4-20 mA; closed 0-10 V)

Reset Modbus network parameters to default

X4 terminals

OUT1

4-20 mA / 0-10 V output

OUT2

4-20 mA / 0-10 V output

0 V / 24 VAC Neutral (optional)

RS485 A / Data +

RS485 B / Data -

+24 VDC / 24 VAC Phase (optional)

E2418DF Rev 14.08.2023

Make certain that the cable gland is properly tightened to ensure the conformity to IP65

protection class.

The screwless quick connect spring terminals on the E2418 are suitable for a wide range

of wires with cross-section 0,2...1,5 mm2. The recommended wire stripping length is 8...9

mm. Push the spring loaded terminal lever, insert the wire end into the terminal hole and

release the lever.

Use twisted pair cable, e.g. LiYY TP 2×2×0,5 mm2 or CAT 5, to connect the device to the

RS485 network. Use one pair for A and B wires and the second pair for common 0V and

power +U wires. to connect the transmitter to the Fieldbus network.polarity must be

respected when connecting to an external RS485 network.

Overall length of all connections via the RS485 interface should not exceed 1200 m.

Both analog outputs can be independently changed between 4-20 mA and 0-10 V type

using jumpers J1 (OUT1) and J2 (OUT2). By closing pins on a speciﬁc jumper the related

output is 0-10 V, with an open jumper the output is 4-20 mA. Power restart is required after

changing the position of the jumpers.

NOTE! The outputs are not galvanically isolated from the external power supply and share

a common 0V. Allowed load resistance limits are stated in the Speciﬁcations table. To

power the instrument from an external power source, connect terminals 0V and +U to the

source.

When the detector is ﬁxed and the external devices connected, place the lid back and ﬁx it

with the screws.

E2418DF Rev 14.08.2023

Delivery set

●Differential pressure transmitter-regulator E2418DF

●Mounting accessories:

○4 cross-shaped mounting lug with screws and 4 screws with plastic

dowels

Order code for E2418DF options

E2418DF options

Order code

Differential pressure transmitter-regulator, mass ﬂow,

-50...50 Pa, resolution 0,025 Pa

E2418DF-50

Differential pressure transmitter-regulator, mass ﬂow,

-500...500 Pa, resolution 0,25 Pa

E2418DF-500

Integrated 24 VAC power supply module

E2418-24VAC

Conﬁguring

Differential pressure transmitter-regulator E2418DF shares all functionalities of the

PluraSens® multifunctional transmitter platform. The features and options include:

●Digital output change rate limiting ﬁlter

●Digital integrating (averaging) ﬁlter

●Temperature measurement channel with internal sensor

●Free assignment of each analog output to chosen parameter

●Flexible setting of analog output scales for each output

E2418 can be conﬁgured through its RS485 interface by Modbus RTU commands.

E2418DF Rev 14.08.2023

Return to default settings

To reset the device’s Slave ID, baud rate and stop bit number to factory settings, proceed as

follows:

1. De-energize the device

2. Connect the X6 jumper

X6 Jumper Closed (Connected)

X6 Jumper Open (Disconnected)

3. Turn on the device

4. De-energize the device

5. Disconnect the X6 jumper

6. Turn on the device

NOTE! Cables should be connected/disconnected from PCB when the power supply is

unplugged. Connecting or Disconnecting Live wires can result in Corrupt Firmware.

NOTE! Cables should only be connected / disconnected from the device when the power

supply is switched off. Connecting / disconnecting live wires to the device can cause

sparks which in result can affect device performance during operations. Electrical

installation should always be done by a qualiﬁed Technician.

E2418DF Rev 14.08.2023

Emergency mode

The current outputs of the detector may be programmed via Modbus commands (register

255) to signal if the connection with the sensor is lost. The signal may be set to 3,8 mA

(low current) or 21,5 mA (high current).

Bites

Functions

Notes

Default

bit[0]=0/1

sensor present/absent

Read-only

bit[1]=0/1

analog outputs activated/deactivated

bit[2]=0/1

in case of sensor absence, turn signalling

off/on (OUT 1)

bit[3]=0/1

In case of sensor absence turn on

signalling with low/high current on OUT 1

if bit [2]=0, this bit is ignored

bit[4]=0/1

in case of sensor absence, turn signalling

off/on (OUT 2)

bit[5]=0/1

In case of sensor absence turn on

signalling with low/high current on OUT 2

if bit [4]=0, this bit is ignored

bit[6]=0/1

Current/voltage output detected on OUT 1

Read-only

User deﬁned

bit[7]=0/1

Current/voltage output detected on OUT 2

Read-only

User deﬁned

bit[8]=0/1

LED deactivated/activated

Always 1 for 2418DF

Modbus RTU Communication

Modbus main holding registers (00xxx or 40xxx): 0-based, decimal

Reg

Description

Supported values

hardware version

0...65535

software version

product serial number

0...65535

RW*

Slave ID [1...247]

0...247

RW*

baud rate

1200, 2400, 4800, 9600, 19200, 38400,

57600

RW**

Response delay, ms

1...255 ms

RW*

Stop bits

1 – No parity bit, 1 stop bit

(default after factory reset)

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