Features
• Self-diagnostic procedures to control the hardware and sensor correct operation.
• Zero follower to maintain the detector zero point, from possible drifts caused by thermal or physical variations of the transducer.
• Digital filter, employed in the digital analysis of the analog values sampled, this filter corrects temporary phenomena from causing reading errors or false alarms.
• Hysteresis cycle: applied to the outputs associated to the alarm thresholds, it prevents continuous output switching when close to the threshold values.
• The SMART3-R detectors offer a fast and failsafe installation as well as an easy maintenance and calibration routine via the handheld keypad STS/CKD.
Applications
- Industrial
- Machinery
- Refrigerant
Sensitron Smart 3-R Refrigerant Sensor Overview
The SMART3-R (with LED indication) gas detectors, Refrigerant Sensor, are ideal for non-classified areas. They employ high-quality catalytic, MOS, electrochemical, or infrared sensors, which provide excellent linearity and accuracy, with an estimated lifetime of 4 years for infrared or pellistors sensors and 2 years for electrochemical cell sensors. The SMART3-R gas detectors provide a proportional 4-20mA output signal. By employing optional boards, they can either communicate over a serial RS-485 bus or provide relay outputs. In detail, the available outputs are as follows:
• 4-20 mA. Proportional 4-20mA output current corresponding to the full range (LEL or ppm).
• Relay. By adding the STS3REL board, the unit is provided with 3 relays with voltage-free changeover contacts. One relay is dedicated to the fault and watchdog, while the remaining two relays can be associated with two out of the three available alarm thresholds.
• Serial RS485. By adding the STS.IDI interface, the detector can communicate on the RS-485 bus with MULTISCAN+ + gas control panels.
Sensitron Smart 3-R Refrigerant Sensor Specifications
| Typical use | Detectors for use with Sensitron control panels to detect refrigerant gases. To be used in non-classified areas only. | |||||
| Power supply
|
12-24 Vdc (-20% +15%)
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| Proportional output | 4-20 mA
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| Detectable gases | Halogenated refrigerant and mixtures
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Ammonia (flammable LFL)
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Ammonia (toxic ppm)
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SF6
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| Sensing element employed
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Infrared sensor or MOS
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Catalytic sensor
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Electroch. Cell or MOS
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Infrared sensor
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| Range
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0-2000 ppm 0-100% LFL (A2L) 0-100 ppm (F-gas)
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0-100% LEL
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0-100 ppm 0-200 ppm 0-1000 ppm
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0-2000 ppm
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| Repeatability
|
5% FS
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| Operating temperature
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-40 / + 60 °C (-30 / + 50 °C for ammonia EC)
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| Relative humidity
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20-90 % non-condensing RH/40°C
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| IP rating
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IP54
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| Compliances
|
EN 378-3 :2016 and F-Gas EC 517 :2014 EN 14624 :2012
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- Overview
-
Sensitron Smart 3-R Refrigerant Sensor Overview
The SMART3-R (with LED indication) gas detectors, Refrigerant Sensor, are ideal for non-classified areas. They employ high-quality catalytic, MOS, electrochemical, or infrared sensors, which provide excellent linearity and accuracy, with an estimated lifetime of 4 years for infrared or pellistors sensors and 2 years for electrochemical cell sensors. The SMART3-R gas detectors provide a proportional 4-20mA output signal. By employing optional boards, they can either communicate over a serial RS-485 bus or provide relay outputs. In detail, the available outputs are as follows:
• 4-20 mA. Proportional 4-20mA output current corresponding to the full range (LEL or ppm).
• Relay. By adding the STS3REL board, the unit is provided with 3 relays with voltage-free changeover contacts. One relay is dedicated to the fault and watchdog, while the remaining two relays can be associated with two out of the three available alarm thresholds.
• Serial RS485. By adding the STS.IDI interface, the detector can communicate on the RS-485 bus with MULTISCAN+ + gas control panels.
- Specifications
-
Sensitron Smart 3-R Refrigerant Sensor Specifications
Typical use Detectors for use with Sensitron control panels to detect refrigerant gases. To be used in non-classified areas only. Power supply 12-24 Vdc (-20% +15%) Proportional output 4-20 mA Detectable gases Halogenated refrigerant and mixtures Ammonia (flammable LFL) Ammonia (toxic ppm) SF6 Sensing element employed Infrared sensor or MOS Catalytic sensor Electroch. Cell or MOS Infrared sensor Range 0-2000 ppm 0-100% LFL (A2L) 0-100 ppm (F-gas) 0-100% LEL 0-100 ppm 0-200 ppm 0-1000 ppm 0-2000 ppm Repeatability 5% FS Operating temperature -40 / + 60 °C (-30 / + 50 °C for ammonia EC) Relative humidity 20-90 % non-condensing RH/40°C IP rating IP54 Compliances EN 378-3 :2016 and F-Gas EC 517 :2014 EN 14624 :2012 - Downloads
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