Crowcon Sensitron SMART S-IS Gas Detector with Electrochemical Cell

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Crowcon Sensitron SMART S-IS Gas Detector with Electrochemical Cell

Designed to meet the toughest industrial standards, the SMART S-IS series gas detectors are used to detect, in classified areas (zone 1 and, if equipped with the dust adapter, zone 21), the presence of toxic substances (ppm).

The premium electrochemical cell is used as a sensing element for the reading of toxic gases, which is well suited for detecting substances at low concentrations. The sensor is housed in a stainless steel head with a diameter of 47.5 mm.

The SMART S-IS detectors are internally equipped with a Zener barrier and a galvanic separation circuit that guarantees intrinsic safety protection.

The detector has a 12-24 Vdc power supply, a 4-20 mA signal output and an RS485 signal.

The SMART S-IS has a display (LCD or LED) to monitor the concentration in real time, and Hall effect sensors are used for non-intrusive calibration in the field.

The SMART S-IS detector has the following customisation possibilities:

  • Choice of the sensor head based on the gas to be detected
  • Choice of transmitter (type of display, 3-relay board, HART modem)
  • Choice of enclosure (aluminium/steel, number of entrances)

Order Information

4A Transmitter Exd Aluminum Enclosure

Part Number Description
SIS4A21 Electronic with output RS485+4-20 mA, LCD display, IS & GI card
SIS4A22 Electronic with output RS485+4-20 mA, LED display, IS & GI card
SIS4A23 Electronic with output RS485+4-20 mA, LCD display, 3-relay card, IS & GI card
SIS4A24 Electronic with output RS485+4-20 mA, LED display, 3-relay card, IS & GI card

2S Transmitter Stainless Steel Enclosure

Part Number Description
SIS2S21 Electronic with output RS485+4-20 mA, LCD display, IS & GI card
SIS2S22 Electronic with output RS485+4-20 mA, LED display, IS & GI card
SIS2S23 Electronic with output RS485+4-20 mA, LCD display, 3-relay card, IS & GI card
SIS2S24 Electronic with output RS485+4-20 mA, LED display, 3-relay card, IS & GI card

SMART S Heads for SMART S-IS

Part Number Gas / Sensor Type Range
S5005O2 Oxygen (O₂) 0–25% vol.
S5011SD Sulphur Dioxide (SO₂) 0–20 ppm
S5049SD Sulphur Dioxide (SO₂) 0–100 ppm
S5012ND Nitrogen Dioxide (NO₂) 0–20 ppm
S5015CL Chlorine (Cl₂) 0–20 ppm
S5014HC Hydrochloric Acid (HCl) 0–50 ppm

Spares

Part Number Gas / Sensor Type Range
S5005O2 Oxygen (O₂) 0–25% vol.
S5011SD Sulphur Dioxide (SO₂) 0–20 ppm
S5049SD Sulphur Dioxide (SO₂) 0–100 ppm
S5012ND Nitrogen Dioxide (NO₂) 0–20 ppm
S5015CL Chlorine (Cl₂) 0–20 ppm
S5014HC Hydrochloric Acid (HCl) 0–50 ppm

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