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Evikon PluraSens E2638-NH3-P, User Manual

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Evikon PluraSens E2638-NH3-P User Manual Download Page 12

E2638-NH3-P

Rev 29.07.2022

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.
If the integrated mains power supply module is used, connect terminals L and N to the
mains.

NOTE!

Actuator short-circuits should be avoided, to protect the instrument relays, use

external fuses or safety switches.

Correct and incorrect cabling for 24 VAC

12

Summary of Contents for PluraSens E2638-NH3-P

Page 1: ...PluraSens Ammonia Detector Transmitter E2638 NH3 P User Manual ...

Page 2: ...ng 9 Gas sensor replacement procedures 9 Electrical connections 10 Correct and incorrect cabling for 24 VAC 12 Operation 13 Maintenance 13 Calibration 13 Delivery set 14 Order code for E2638 NH3 P options 14 Configuring 15 Return to default settings 15 Modbus RTU Communication 16 RS485 communication interface 16 Communication parameters 16 Modbus holding registers 16 Warranty 21 Manufacturer conta...

Page 3: ...hemical formula NH3 Molar weight 17 Relative gas density to air 0 59 Conversion 1 ppm 0 70 mg m3 Boiling point 33 3 C Low explosive limit LEL vol in air 15 Upper explosive limit UEL vol in air 28 Odor Characteristic pungent smell Odor detection threshold 0 04 ppm 57 ppm according to different studies Hazards Ammonia is irritant to the skin eyes and respiratory tract Ammonia inhalation causes breat...

Page 4: ...analog output scale can be set according to customer s requirement e g 0 4 vol NH3 Load resistance RL Us 2 V 22 mA for 4 20 mA RL 250 kOhm for 0 10 V mode Digital interface RS485 Modbus RTU protocol No galvanic isolation Enclosure Grey ABS wall mount protection class IP65 Dimensions H90 W145 D55 mm overall dimensions H140 W145 D55 mm CE marking According to 2014 30 EU and 2014 35 EU EN 50491 4 1 2...

Page 5: ...ions Visual Red and green LEDs Acoustic alarm Buzzer 85 dB LCD indicator option Operating temperature 0 50 C Display dimensions 72 36 mm Number of digits 3 5 7 segment Character height 14 mm Other features Backlight Other options Remote probe Protection IP65 default cable length 3 0 m max height 80 mm max diameter 65 mm 5 ...

Page 6: ...r power supply module LCD indicator Remote probe The version of your device is marked on the package If the symbol is marked on the equipment consult the documentation for further information Safety requirements Misuse will impair the protection of the product Always adhere to the safety provisions applicable in the country of use Do not perform any maintenance operation with the power on Do not l...

Page 7: ... detection Properties of the space under investigation room geometry direction and velocity of airflows etc Ammonia is lighter than air so the sensor should be placed higher than the potential leakage or formation source The device should be accessible for maintenance and repair The aforementioned conditions above will affect the coverage area of the device however the coverage area for a transmit...

Page 8: ...E2638 NH3 P Rev 29 07 2022 Mounting dimensions Front view Bottom view 8 ...

Page 9: ...ld filter Place a new filter into the cap and tighten it again NOTE Never stab or press the filter near its center where the sensor is located since this may damage the sensor Do not remove the filter as it may cause the device to show incorrect values and or break the sensor The recommended orientation of the sensor probe is vertical with the sensor tip pointing downwards This prevents the possib...

Page 10: ...ower supply and of the external devices Without turning on the power plug the power cable and connect the analog relay outputs and or digital interface terminals to the necessary devices according to the relevant connection diagram Version with PSU and relays Version with PSU and without relays Version without PSU and with relays Version without PSU and relays 10 ...

Page 11: ... a wide range of wires with a cross section of 0 2 1 5 mm2 We recommend striping the wire end by 8 9 mm and using wire end sleeves To connect the wire insert the wire end into the terminal hole To disconnect push the spring loaded terminal lever pull the wire out and release the lever Use a twisted pair cable e g LiYY TP 2 2 0 5 mm2 or CAT 5 to connect the device to the RS485 network A and B on th...

Page 12: ... the Specifications table To power the instrument from an external power source connect terminals 0V and U to the source If the integrated mains power supply module is used connect terminals L and N to the mains NOTE Actuator short circuits should be avoided to protect the instrument relays use external fuses or safety switches Correct and incorrect cabling for 24 VAC 12 ...

Page 13: ... off pulses Normal operating measurement Continuously on or off Make sure that the detector transmitter is properly mounted the external devices connected power LED green on and control LED red constantly lit Place the lid back and fix it with the screws The device is ready to use Maintenance Do not perform any maintenance operation with the power on Clean the device with a soft damp cloth Do not ...

Page 14: ... mount option stem Ø35 L230 mm E2638 NH3 P DM Integrated 24 VAC power supply module E2638 NH3 P 24VAC Integrated 90 265 V mains power supply module E2638 NH3 P 230 Local LCD single value display 36 mm x 72 mm E2638 NH3 P LCD Remote LCD single value display wall mount box 115 65 40mm 3 m cable E2638 NH3 P RLCD3 Two SPST relays E2638 NH3 P R Two LEDs visual alarm E2638 NH3 P LED Buzzer acoustic alar...

Page 15: ...lexible setting of analog output scales for each output Output zero and slope adjustment for calibration Free assignment of each of two relays to the chosen parameter Several relay control logic modes Switch delays and minimum on off state durations for each relay The output scales can be changed by Modbus commands by using the configuration software and the standard configuration kit see Modbus R...

Page 16: ...iple registers 06 Write a single register Error codes 01 Illegal function 02 Illegal data address 03 Illegal data value 04 Slave device failure details of last error 04 can be read from register 0x0008 Modbus holding registers Register addresses are shown 0 based Address in hexadecimal Reg in decimal format Modbus holding register numbers MHR are shown in the decimal 1 based format and may be addr...

Page 17: ... RW Zero adjustments for gas data ADC 32000 32000 ADC units 0 0x00A6 166 40167 RW Slope adjustment for gas data 1 65535 512 0x00A7 167 40168 RW Change rate limit for gas units s 1 32000 0 no limit 0 0x00A8 168 40169 RW Integrating filter time constant s 1 32000 seconds 0 no filter 0 Address Reg MHR RW Description Supported values dec Default 0x00C9 201 40202 RW Parameter tied to analog output 1 0 ...

Page 18: ...4 40215 RW Forced state for relay RE2 0 off 1 on 0 0x00D7 215 40216 RW Switching delay for relay RE1 0 1000 s 0 0x00D8 216 40217 RW Switching delay for relay RE2 0 1000 s 0 0x00D9 217 40218 RW Minimal on off time for relay RE1 0 1000 s 0 0x00DA 218 40219 RW Minimal on off time for relay RE2 0 1000 s 0 Address Reg MHR RW Description Supported values dec Default 0x00DB 219 40220 RW Control logic for...

Page 19: ... 65535 gas units see Specifications 0x00FF 255 40256 RW Sensor analog outputs LED and buzzer status bit 0 0 1 sensor present absent RO bit 1 0 1 analog outputs deactivated activated bit 2 0 1 in case the sensor is absent turn signaling off on analog output1 bit 3 0 1 in case the sensor is absent turn on signaling with low current high current on analog output1 if bit 2 0 this bit will be ignored b...

Page 20: ...utput 1 32000 32000 gas units User defined 0x0106 262 40263 RW 100 value for analog output 1 32000 32000 gas units User defined 0x0107 263 40264 RW 0 value for analog output 2 32000 32000 gas units User defined 0x0108 264 40265 RW 100 value for analog output 2 32000 32000 gas units User defined The new value is applied after restart Broadcast slave ID 0 can be used to assign a new ID to the instru...

Page 21: ... Manufacturer will at its option either repair or replace a product that proves to be defective This warranty is void if the product has been operated in conditions outside ranges specified by the Manufacturer or damaged by customer error or negligence or if there has been an unauthorized modification Manufacturer contacts Evikon MCI OÜ Teaduspargi 7 9 Tartu 50411 Estonia info evikon eu www evikon...

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