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Nitric oxide
Colourless  toxic  gas,  relatively  insoluble  in  water.  When  exposed  to  oxygen
(including air), nitric oxide is converted into nitrogen dioxide.

Chemical formula

NO

Molar weight

30

Relative gas density (to air)

1.03

Conversion

1 ppm = 1.23 mg/m

3

Boiling point

-152 °C

Flammability

Nonflammable,  but  accelerates  the
burning of combustible materials.

Odour

Pure NO is odourless, but in the air it
oxidizes  to  NO

2

  which  has  a  pungent

odour

Hazards

Irritates  respiratory  tract  and  eyes,  at
high  concentrations  may  cause  lung
edema and death.

Exposure 

limits

(Directive 91/322/EEC)

TWA

30 mg/m

3

 /25 ppm

IDLH (NIOSH) 123 mg/m

3

 /100 ppm

Conversion of ppm to mg/m

3

 is calculated for 25°C and 1 atm.

Installation guidelines
(See Installation and connections section for general information.)
Nitric  oxide  has  practically  the  same  density  as  air.  As  it  is  easily  oxidized  to  form
nitrogen dioxide, the sensor should be placed as close as possible to the gas source.
Calibration
E2608-NO  detectors  have  been  calibrated  by  Manufacturer  with  standard  gas
mixtures  before  delivery.  Provided  that  the  sensor  is  used  under  moderate
conditions,the  recommended  interval  for  field  recalibration  is  6  months.  Please
contact your dealer for more information.
Maintenance
Do not perform any maintenance operation with the power on.
Clean the device with soft damp cloth. Do not use any abrasive cleaning agents. Do
not immerse the device into water or any cleaning media.
Delivery set
–Detector-transmitter E2608 (wall mount or duct mount version)
– Mounting accessories:

4 cross-shaped mounting lug with screws and 4 screws with plastic dowels for wall
mount version
rubber flange for duct mount version
fixing clamp for remote probe versions

E2608-NO_UM_EN 

         Rev 06.06.2020

Specifications

Sensor type

electrochemical cell

Sampling method

diffusion

Typical detection range

0...250 ppm

Maximum overload

1000 ppm

Resolution / digital unit

1 ppm

Response time T90

< 40 s

Sensor lifetime

> 12 months

Calibration interval

6 months

Signal update

every 1 second

Power supply options

11...30 VDC, 24 VAC

or 90...265 VAC (with mains power unit)

Power consumption

< 2 VA

Load resistance

R

L

 < (Us - 2 V) / 22 mA for 4-20 mA

R

L  

> 250 kOhm for 0-10 V mode

Digital interface

RS485, Modbus RTU protocol

no galvanic isolation

Analog outputs

2 × 4-20 mA / 0-10 V, user settable

Outputs assignment

OUT1 2 gas; OUT2 2 gas

Output scale width

> 10 × resolution

Recommended: 20-100% of the detection range

Relay otputs

2 × SPST, max 5 A, 30 VDC / 250 VAC

Default alarm setpoints

RE1 (LOW): set 10 ppm, release 8 ppm

RE2 (HIGH):set 25 ppm, release 20 ppm

Cable connections

screwless spring loaded terminals

Enclosure

grey ABS, wall mount, protection class IP65

Dimensions

H85 × W82 × D55 mm

CE marking

according to 2014/30/EU and EN61326-1 requirements

Operating conditions

-30...50 °C, 15...90% RH non-condensing, 0,9...1,1 atm

explosion safe indoor areas, non-aggressive atmosphere

NOTE The sensor may exhibit considerable sensitivity to

hydrogen sulfide and nitrogenr dioxide

Warranty
This product is warranted to be free from defects in material and workmanship for a
period  of  one  year  from  the  date  of  original  sale.  During  this  warranty  period
Manufacturer  will,  at  its  option,  either  repair  or  replace  product  that  proves  to  be
defective. This warranty is void if the product has been operated in conditions outside
ranges  specified  by  Manufacturer  or  damaged  by  customer  error  or  negligence  or  if
there has been an unauthorised modification.

         Evikon MCI OÜ

                Teaduspargi 7/9, Tartu

[email protected]

         Tel. +372 733 6310 

  50411 Estonia

www.evikon.eu

PluraSens

®

Nitric Oxide Detector-Transmitter

E2608-NO

User Manual

Содержание PluraSens E2608-NO

Страница 1: ...be versions E2608 NO_UM_EN Rev 06 06 2020 Specifications Sensor type electrochemical cell Sampling method diffusion Typical detection range 0 250 ppm Maximum overload 1000 ppm Resolution digital unit 1 ppm Response time T90 40 s Sensor lifetime 12 months Calibration interval 6 months Signal update every 1 second Power supply options 11 30 VDC 24 VAC or 90 265 VAC with mains power unit Power consum...

Страница 2: ...s devices are suitable for a wide range of wires with cross section 0 2 1 5 mm2 We recommend to strip the wire end by 8 9 mm and use wire end sleeves To connect the wire insert the wire end into terminal hole To disconnect push the spring loaded terminal lever pull the wire out 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 RS485 network Resp...

Страница 3: ... or 40001 base Addr Reg MHR RW Description Supported values dec Default 0x0001 1 40002 R Hardware version 0x0002 2 40003 R Software version 0x0003 3 40004 R Product serial number 1 65535 0x0004 4 40005 RW Slave ID net address 1 247 1 0x0005 5 40006 RW Baudrate 1200 2400 4800 9600 19200 38400 57600 9600 0x0006 6 40007 RW Response delay ms 1 255 10 0x0007 7 40008 RW Stop bits parity bit 1 no parity ...

Страница 4: ...t in reg 204 2 0x00CB 203 40204 RW Forced value for analog output 1 0 1000 0 0 100 0 of output scale 0 0x00CC 204 40205 RW Forced value for analog output 2 0 1000 0 0 100 0 of output scale 0 0x00D3 211 40212 RW Parameter tied to relay RE1 0 none 1 temperature 2 gas concentration 9 control by Modbus control state set in MHR 40214 2 0x00D4 212 40213 RW Parameter tied to relay RE2 0 none 1 temperatur...

Страница 5: ... is on off in normal condition bit 11 0 1 1 Hz 50 on 50 off LED signal off on if relay1 turned on bit 12 0 1 2 Hz 50 on 50 off LED signal off on if relay2 turned on user defined 0x0101 257 40258 R Raw gas sensor data 0 4095 ADC units 0x0102 258 40259 R Measured temperature C 100 signed integer 4000 12500 40 00 125 00 C 0x0103 259 40260 R Gas concentration gas units 0 65535 gas units 0x0105 261 402...

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