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The Model SD-1 EC smart transmitter/ detector head is state of the art instrument housed in flameproof enclosure certified by ATEX. A simple Magnetic control Key is used to adjust and calibrate the instrument. Long Life Electrochemical type sensors are used to detect variety of Toxic gases. SD-1 EC Type HS comes with HART output and is SIL2 compliant. Relay contacts for Alarms, Fault and 4-20 mA output is available standard in other models.

  • Features
  • Applications
  • Approvals
  • Specification
  • Accessories
  • Explosion class Exd IIC T6 Gb (DEKRA 13ATEX0035 X / IECEx DEK 13.0024X)
  • IP65/67 ingress class
  • 4-20mA linear outputs
  • Small, rugged, dust and weather proof construction
  • One man maintenance by magnetic key
  • Self diagnosis by microprocessor
  • Petrochemical Plants
  • Refineries
  • Water & Wastewater Treatment Plants
  • Pulp & Paper Mills
  • Manufacturing Facilities
  • Automotive
  • Semiconductor Plants
  • Chemical Plants
Model SD-1EC
Detection Principle Electrochemical type
Gas to be detected CO/H2S
Concentration Display Seven-segment LED (four-digit)
Detection Range CO : 0-75 ppm/H2S: 0-30 ppm (Standard)
Detection Method Diffusion type
Alarm Setpoint Value Depends On Target Gases
External Output 4-20mA
Alarm Delay Time (under the same conditions) Approx. 30 seconds when exposed to gas concentration of 1.6 times alarm level
Gas Alarm Type One-step alarm (L)
Gas Alarm Display ALM lamp on (red)
Gas Alarm Pattern Non latching (auto-reset)
Fault Alarm / Self Diagnosis System abnormalities/sensor abnormalities
Fault Alarm Display FAULT lamp on (yellow)/detail display
Fault Alarm Pattern Non latching (auto-reset)
Transmission System 3-wire type analog transmission
(common cable for power and signal < power, signal, common >)
Transmission Specifications 4 - 20 mA DC (linear/load resistance under 300 Ω, resolution divided into 200)
Transmission Cable CVVS1.25 sq - 3-core or CVVS1.25 sq - 5-core (when the contact is used)
Transmission Distance Below 1.25 km
Power Supply 24 VDC (17 – 26.4 VDC)
Power Consumption Maximum 1.1 W
Cable Connecting Port Pressure proof packing gland
Initial Clear Approx. 25 seconds
Operating Temperatures -20 - +60°C (at a constant condition)
Operating Humidity 30-80% RH (Non-condensing)
Structure Wall mounting type
Explosion-Proof Structure Flame-proof enclosures
Explosion-Proof Class Exd IIC T6 Gb
Explosion-Proof Certification Number DEKRA 13ATEX0035 X / IECEx DEK 13.0024X
External dimensions / Weight Approx. 148 (W) x 203 (H) x 88 (D) mm
(projection portions excluded) Approx. 2.2 kg
Standard Accessories
  • Magnetic key
Optional Accessories
  • Calibration Cap
  • Sun Shade Cover (For pole stand)
  • Sun Shade Cover (For wall)
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