Phosphin (PH3) ist ein farbloses, giftiges Gas mit einem unangenehmen Geruch nach Knoblauch oder faulen Eiern. Es wird häufig in der Landwirtschaft und im Industriesektor eingesetzt und kann bei höheren Konzentrationen ein potenzielles Gesundheitsrisiko darstellen.
Gas-Detektoren für Phosphin im Feld sind spezielle Geräte, die in der Lage sind, das Vorhandensein von Phosphin in der Luft zu erfassen und zu messen. Diese Detektoren nutzen in der Regel elektrochemische Sensoren, um die Reaktion von Phosphin mit der Luft zu erfassen.
Die Detektoren sind in verschiedenen Ausführungen erhältlich.
Insgesamt bieten Gas-Detektoren für Phosphin eine zuverlässige Möglichkeit, das Vorhandensein von Phosphin in der Luft zu messen und zu überwachen. Dies ist insbesondere in Bereichen wie der Landwirtschaft und der Industrie von großer Bedeutung, um sicherzustellen, dass das Phosphin in sicheren Konzentrationen gehalten wird und keine Gesundheitsrisiken für die Mitarbeiter oder die Öffentlichkeit entstehen.
The Porta Sens III is a mobile gas measuring device for carrying out regular leak checks in gas storage areas, near process plants, pipelines or in working areas. Features:Latest Smart SensorsInternal sample pump and external sample suctionNiMH D-cell battery or alkaline cellEasy to read LCD colour display with backlightDirect and time-controlled measurementVisual and audible alarmsInternal 4 GB data logger with USB outputTechnical data:Measuring range: depending on the sensor module usedDisplay: Backlit LCD color displayAccuracy: Sensor dependent, but generally ± 5% of value (limited by calibration gas) Sensitivity: Typically 0.1-1% of sensor module range Output: USB transmission of the stored measured value Memory: 4 GBStorage interval: programmable from 1 min to 60 minPower: Rechargeable NiMH D-cell battery or alkaline battery Operating temperature: -25 ° C to +55 ° CHumidity: 0-95% Non-condensingSize: 89 mm x 229 mm x 140 mmWeight: 3,2 kgDelivery in a case, consisting of:Mobile gas detector Porta Sens IIIReplacement filter10" Teflon lined sampling rodFlow meterUSB cablesReplacement NiMH D cell batteryChargerSensor holderCalibration "T" adjustment Frequently Asked Questions The sensor is specified as 0–10/100 ppm (20 ppm standard). Is the measurement range 0–10, 0–100 or 0–20 ppm, or is it adjustable? The sensor’s measurement range is 0–100 ppm. The resolution is 0.1 ppm. The smallest measurement range that can be set is 0–10 ppm and the largest is 0–100 ppm. The specification ‘20 ppm standard’ refers to the sensor’s measurement range as supplied (0–20 ppm). This can be adjusted via the operating menu if necessary. The accuracy is specified as sensor-dependent. Does the usual 5% apply to the H₂O₂ sensor? Yes. What gas is used for calibration? Calibration is carried out using H₂O₂ generated on site. However, this requires a generator. Our customers send the sensors to us for recalibration. Another advantage of this procedure is that it allows us to determine at the same time whether the sensor can still be reliably calibrated or whether it will need to be replaced in the future. If calibration is carried out using a substitute gas, does this affect the accuracy? The manufacturer does not provide for calibration with a substitute gas for this device. For the stationary systems from the same manufacturer, a sulphur dioxide gas generator (optional accessory) is connected for H₂O₂. However, this is not available for the Portasens. Can I calibrate the device myself, or does it need to be sent in? The sensor modules are factory-calibrated before dispatch. A zero-point calibration should be carried out every 2–3 months. A full recalibration should be carried out every 6 to 12 months. Use in dirty or dusty locations increases the need for more frequent calibration. You can carry out the calibration yourself or send the sensors in for factory calibration.
Phosphine Smart Sensor for Porta Sens III Manufacturer number: 00-1034