MSA Series 47k - Remote Combustible Gas Sensor (Aluminium) / 0-100% LEL
MSA’s Series 47K is extremely useful and cost-effective instrument for the detection of potentially hazardous concentrations of flammable gas and vapour (up to 100% LEL), using catalytic sensors. The Series 47K sensors comes in high temperature (HT), poison resistant (PRP) and general purpose (ST) versions.
This fixed system is available with an Ex d – ¾” NPT (Flameproof) or Ex e – M25 (Increased Safety) junction box. The Series 47K can be operated alongside the following control units: SUPREMA, E 292, 9010/9020 LCD, ED 098 SMD and can fully meet the requirements of ATEX Directive 2014/34/EU, for use in safety related systems. The Series 47K contains the Series 47K catalytic sensor and a junction box which contains the terminal board.
The Series 47K has a varied range of accessories, that increases the ease of maintenance such as: duct mount flanges, flow-through adapters, weather protection cap and calibration cap. These can assist with using the instrument in situations such as (but not limited to) the installation of a sensor in high temperature conditions and ensures suitability for a variety of applications.
Applications include: Chemical & Petrochemical Industry; Pipelines; Solvent Recovery & Storage; Turbine & Compressors; Gas Industry; Refrigeration Industry; LPG Storage and Transportation; Shipboard; Paint Manufacture; Printing Industry; Loading-Unloading of Hazardous Gas & Vapour; Automotive Test Benches; Boiler Rooms and Biofuels
- 0-100% LEL
- Exceptionally cost effective passive catalytic sensors
- Sensors available in stainless steel body
- Wire connections ranging from 3-5
- Quick response time
Sensor |
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Power Consumption |
1 watt typically |
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Measuring Range |
0–100 % LEL |
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Response Time |
τ50 ≤10 sec. τ90 ≤30 sec. |
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Operating Life |
3 years minimum in clean air @ STP |
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Storage Life |
5 years minimum in MSA container @ STP |
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Storage temperature |
–20 °C to +40 °C |
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Operating temperature range |
–40 °C to +55 °C (PRP) –40 °C to +90 °C (extended range*) –40 °C to +160 °C (HT) |
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Operating humidity range |
5 % to 95 % RH non-condensing |
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Operating pressure range |
100 ±20 kPa |
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Air velocity |
0 – 6 m/s (with duct mount flange 0.5 – 20 m/s) |
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Poison resistance |
PRP sensor only: 10 ppm HMDS for 40 min. (max. signal loss 5% of reading) |
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Weight |
ca. 230 g (St.St. sensor) |
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Dimension |
Ø 36 x 56 mm |
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Material |
Stainless Steel |
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Accessory thread |
M36 x 1.5 mm |
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Sensor to junction box |
3/4” NPT or M25 x 1.5 mm |
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Approvals |
EU Type Certificate: II 2GD INERIS 03 ATEX 0208 |
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Safety Integrity level |
SIL 2 (IEC 61508) |
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Junction Box
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Flameproof (Ex d) |
Increased Safety (Ex e) |
Weight |
870g |
813g |
Cable gland thread |
3/4” NPT |
M25 x 1.5 mm |
Terminals |
5 x 2.5 mm² |
5 x 2.5 mm² |
Materials |
Aluminium (powder coated) |
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Dimension |
120 x 97 x 170 mm (W x D x H) |
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Approvals |
EU Type Certificate: BVS 10 ATEX E 066X |
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Ex db IIC T6 or T4 Gb |
Ex e II T6 or T4 |
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Ex tb IIIB T85°C or T135°C T6 –50 °C ≤ Ta ≤ +40 °C T4 –50 °C ≤ Ta ≤ +80 °C T85 °C –50 °C ≤ Ta ≤ +40 °C T135 °C –50 °C ≤ Ta ≤ +80 °C |