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The Model SD-1 OX 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 Galvanic type sensor is used to detect Oxygen Gas. SD-1 OX 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-1OX
Detection Principle Galvanic cell type
Gas to be detected Oxygen
Concentration Display Seven-segment LED (four‐digit)
Detection Range 0-25vol%
Detection Method Diffusion type
Alarm Setpoint Value 18 vol%
External Output 4-20mA
Alarm Accuracy (under the same conditions) Within ±0.7 vol% to the alarm setpoint value
Alarm Delay Time (under the same conditions) For an oxygen deficiency alarm
(18 vol% L alarm), 5 seconds or less after detecting a 10 to 11 vol% gas
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 Below 95% 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 208 (H) x 88 (D) mm
(projection portions excluded) Approx. 2.5 kg
Standard Accessories
  • Magnetic key
Optional Accessories
  • Calibration Cap
  • Sun Shade Cover (For pole stand)
  • Sun Shade Cover (For wall)
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