Electrochemical Toxic Gas Sensors NT-H2S-3 - NEMOTO - #1

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NEMOTOTECH S.r.l. – 20010 Cornaredo (MI) ITALY Via Legnano, 2 – Tel.+39.02.93544190 – Fax +39 .02. 93540347 C.F. e P. IVA (VAT) IT-06188920968 – CAPITAL EURO 20.000,00 – Website: www.nemototech.it – E-mail: info@nemototech.it TECHNICAL INFORMATION SHEET: NEMOTO NT-H2S-3 Electrochemical Hydrogen Sulphide Sensor General Description The NT-H2S-3 is a new electrochemical gas sensor with 3 electrodes for the detection of Hydrogen Sulphide (H2S) in a variety of gas detection applications. Exhibiting high performance with longterm stability, this compact (20.4mm dia) sensor is suitable for portable Gas Detection Instruments or Fixed Gas Detection heads. The NT-H2S-3 is designed to complement the mainstream NT-H2S-1 sensors, for use in more specialised applications, where a higher range of 0- 500 ppm is required. Nemoto's porous electrode technology enables accurate gas detection with high sensitivity. The mechanical design of the sensor gives optimum gas diffusion characteristics, and the hermetically sealed enclosure prevents costly electrolyte leakage. Nemoto has a policy of continuous development and improvement of its products. As such the specification for the device outlined in the data sheet may be changed without notice Specifications Detectable gas: Hydrogen Sulphide Detection range: 0 – 500 ppm Maximum range (short periods): 2000 ppm Output current: 200 +/- 50 nA/ppm Reproducibility: +/- 2% Zero in clean air: <+/-3 ppm equivalent Output drift in air: 2 years Operating conditions: Operating temperature: -20°C to + 50°C Humidity range (constant): 15-90% RH Humidity range (intermittent): 0-99%% RH Pressure: 0.9 – 1.1 atm Recommended resistor: 10 ohms Bias voltage: Not required Recommended Storage temp: 0-20°C Storage time: 6 months (without compromising lifetime) ds-nt-h2s-3.doc, issue 2, Apr 2009