Evikon E2638R-H2S Hydrogen Sulfide Detector-Transmitter (0...2000 ppm)

Calibration gas: Hydrogen Sulfide (H₂S)

Sensor type: Electrochemical cell

Sampling method: Diffusion

Typical detection ranges: 0...100 ppm H₂S (500 ppm peak); 0...2000 ppm; other ranges available on request

Resolution: 0.1 ppm for 0...100 ppm range; 2 ppm for 0...2000 ppm range

Signal update: Every 1 second

Self-diagnostics: Full functionality check at start-up

Warm-up time: ≤ 1 min

Sensor lifetime: > 2 years

Maintenance interval: 6 months

Power supply: 11...30 VDC / 24 VAC or 90...265 VAC

Power consumption: < 2 VA

Digital interface: RS485, Modbus RTU protocol

Analog outputs: 2 × 4–20 mA / 0–10 V, user settable

Output relays: 2 × SPST relays (closing contact), 250 VAC / 30 VDC, 5 A max

Default alarm set-points:

LOW: set 10 ppm; release 8 ppm

HIGH: set 20 ppm; release 16 ppm

(For 0...2000 ppm range, user defined)

Enclosure: Grey ABS plastic, protection class IP65

Dimensions: H90 × W145 × D50 mm

Remote sensor probe: Protection IP20, default cable length 3.0 m

Visual alarm: Red and green LEDs (option)

Acoustic alarm: Buzzer 85 dB (option)

Operating conditions: -20...+50 °C, 15...95 %RH, non-ATEX-rated areas

Operating conditions: -30...+50 °C, 15...90 %RH, atmospheric pressure ±10%, non-ATEX-rated areas, non-aggressive atmosphere.

Datasheet