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 |
| Sensor | |
| Application | Industrial areas, ATEX Zone 1 and Zone 21 (if equipped with optional dust adapter) |
| Sensor | Electrochemical cell |
| Estimated sensor life | 2 / 3 years |
| Gas detected and range | O2 [0-25% Vol], SO2 [0-20 ppm and 0-100 ppm], NO2 [0-20 ppm], Cl2 [0 – 5/20 ppm]; HCl [0 – 50 ppm] |
| Electrical parameters | |
| Power supply | 12-24 Vdc |
| Output | Analogue 4-20 mA output; RS485 serial output; 3 relay board (optional); HART modem (optional) |
| Maximum dissipated power | 4.5 W |
| Relays contact ratings | 1.0 A a 24 Vdc |
| Visual indications | LED or LCD display |
| Acoustic indications | – |
| Hall effect sensor | Three sensors for calibration by magnet |
| Environmental conditions | |
| Storage temperature | 0 / +20°C for a maximum of 6 months |
| Operating temperature | -20 / +50°C |
| Operating humidity | 15 / 90% RH non-condensing |
| External case | |
| Material |
Enclosure: die-cast aluminium with colour and chemically resistant epoxy paint or electropolished SS316 stainless steel Sensor head: SS316 stainless steel |
| Protection mode |
Ex d : Explosion proof enclosure Ex i: Intrinsically safe electronics. Ex t : Equipment dust ignition protection by enclosure (when equipped with optional dust adapter) |
| Dimensions |
138 x 200 x 120 mm (4A enclosure) 155 x 210 x 124 mm (2S enclosure) |
| Weight |
2800 g (4A enclosure) 4200 g (2S enclosure) |
| Cable entries | 4 x 3/4” NPT |
| IP grade | IP65 (when equipped with optional dust adapter) |
| Compliance | |
| EMC | EN 61000-6-3:2007 + A1:2011; EN 50270:2015 |
| ATEX |
ATEX directive 2014/34/EU EN 60079-0:2012+A11:2013 EN 60079-1:2014 EN 60079-11:2012 EN 60079-31:2014 |
| IECEx |
IEC 60079-0:2011 IEC 60079-1:2014 IEC 60079-11:2011 IEC 60079-31:2013 |
| SIL |
EN 61508:2010 Parts 1, 2, 3, 4, 5, 6, 7 EN 50402:2017 |
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