E2658-NH3-S Rev 29.06.2021 Ammonia A colorless gas, highly soluble in water, with a characteristic pungent smell. Ammonia is a large-scale production of the chemical industry widely used as a raw material for the production of fertilizers and explosives, as a refrigerant, as a cleaning and antimicrobial agent.
E2658-NH3-S Rev 29.06.2021 Specifications Sensor type Metal oxide semiconductor Sampling method Diffusion Typical detection ranges 0...1000 ppm Resolution / digital unit 1 ppm Response time T90 ca. 60 s Sensor lifetime > 5 years Calibration interval 12 months Signal update Every 1 second 11...30 VDC (default), Power supply options...
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E2658-NH3-S Rev 29.06.2021 EN 61000-6-3:2020, EN 61326-1:2013 (EMC, Emissions) EN 61000-6-1:2019, EN 61000-6-2:2019, EN 61326-2-1:2013 (EMC, Immunity) EN 60079-0:2018, EN 60079-1:2014, EN 60079-31:2014, EN 60079-29-1:2016, EN 60079-29-2:2015, EN 60079-29-3:2014 -40...+50 °C; <95% RH non-condensing, 0,9...1,1 atm; Explosion-safe zones and ATEX Zones 2 and 22 Normal ambient oxygen level Operating conditions Avoid strong mechanical shock, vibrations or EMI...
E2658-NH3-S Rev 29.06.2021 Product description E2658 is a series of flameproof gas detectors-transmitters intended for operation in safe zones and ATEX Zones 2 and 22. E2658 series devices are based on the PluraSens® multifunctional platform and provide all its features. The instruments utilize gas sensors of various types with excellent repeatability, stability, and long lifetime.
E2658-NH3-S Rev 29.06.2021 Operating conditions The device should be used in a basic electromagnetic environment, where the latter is defined in EN 61326-1. Avoid strong mechanical shock and vibrations. Although E2658 series devices are suitable for use in the presence of flammable dust, special precautions should be taken when operating in a dusty environment.
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E2658-NH3-S Rev 29.06.2021 The device is fixed on the wall using two fixing holes located outside the sealed area of the device (see dimensional drawing). Unscrew four lid screws and detach the lid from the detector. Fix the detector on the wall and earth the enclosure using an earthing terminal on the side of the device.
E2658-NH3-S Rev 29.06.2021 Sensor probe handling The sensor probes of all types are equipped with a hydrophobic microporous PTFE filter to protect the sensor from dust, dirt, and water drops. The filter should be replaced if it gets strongly contaminated. To replace the PTFE filter, unscrew the sensor head cap and remove the old filter.
E2658-NH3-S Rev 29.06.2021 Electrical connections Unscrew four lid screws and detach the lid from the device. Use the M25 cable gland to let in the cables of the power 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.
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E2658-NH3-S Rev 29.06.2021 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 -...
E2658-NH3-S Rev 29.06.2021 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.
E2658-NH3-S Rev 29.06.2021 Operation Turn on the power. The instrument warm-up time takes about 5 minutes after switching on and the final sensor stabilization time to maximum accuracy takes about 60 minutes. The operating status is indicated by the LED on the PCB of the device. The control LED (red) response to different processes is presented in the following table: Mode LED mode...
E2658-NH3-S Rev 29.06.2021 Delivery set ● Detector-transmitter E2658 ● Mounting accessories: 2 screws with plastic dowels ○ Order code for E2658-NH3-S options E2658 options Order code Integrated 90...265 V mains power supply module E2658-NH3-S-230 Integrated 24 VAC power supply module E2658-NH3-S-24VAC Two SPST relays E2658-NH3-S-R...
E2658-NH3-S Rev 29.06.2021 Configuring A standard configuration kit includes a USB-RS485 converter, fixed flow regulator, gas tubing with applicators, and a software pack. Please contact your Seller for more information. Detectors- transmitters E2658 share all functionalities of the PluraSens® multifunctional platform.
E2658-NH3-S Rev 29.06.2021 Modbus RTU Communication RS485 communication interface Databits: 8 Supported Modbus functions: Parity: none / odd / even 03 – Read multiple registers Stop bits: 1 or 2 06 – Write a single register Protocol: Modbus RTU Communication parameters Parameter Permitted values Default...
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E2658-NH3-S Rev 29.06.2021 0x0006 6 / 40007 RW Response delay, ms 1...255 1 – No parity bit, 1 stop bit (default after factory reset) 2 – No parity bit, 2 stop bits 3 – Odd parity, 1 stop bit 0x0007 7 / 40008 RW Stop bits, parity bit * 4 –...
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E2658-NH3-S Rev 29.06.2021 0 –none 211 / Parameter tied to relay 2 – gas concentration 0x00D3 40212 9 – control by Modbus control, state set in MHR / 40214 0 – none 2 – gas concentration 212 / Parameter tied to relay 0x00D4 9- –...
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E2658-NH3-S Rev 29.06.2021 221 / 0x00DD LOW setpoint for relay RE1 0...65535 (gas units) 40222 Specifications 222 / HIGH setpoint for relay 0x00DE 0...65535 (gas units) 40223 Specifications 223 / 0x00DF LOW setpoint for relay RE2 0...65535 (gas units) 40224 Specifications 224 / HIGH setpoint for relay...
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E2658-NH3-S Rev 29.06.2021 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 257 / 0x0101 Raw gas sensor data 0...4095, ADC units 40258 259 /...
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...
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