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“Tomorrow’s Instruments Today” — “For Good Measure” ® |
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A Leading South African Test and Measurement Instruments Supplier |
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“For Good Measure”® |
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TMI, Established—1982 |
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Test and Measurement Instruments C.C. |
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Test our Service and Measure with our Instruments. |
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CK 85/07464/23 |
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Please contact us by phone, fax, email or visit us at the details given above. We look forward to hearing from you. |
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Product List |
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All brands, trade names, trade marks, and logos are the property of their respective owners. |
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Brand Names |
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T + M ® |
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English, Afrikaans and Portuguese Speaking No Credit Card Payments yet. |
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Ph: +27 (011) 683 4365 Fax: +27 (011) 683 4461 E-mail: t.m.i@iafrica.com
Physical Address: 1st Floor, TMI House, 37 Garden St, Cnr 160 Bellavista Rd, Turfclub, Johannesburg, 2135 SOUTH AFRICA
Postal Address: P.O. Box 1416, Southdale, Johannesburg, 2135, SOUTH AFRICA
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T.M.I. |
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This Month’s Special |
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Excess Stock to be cleared while stocks last. > Click for More... |
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Thermography—Thermal Imager— Infrared Camera. FLIR i3 — Smallest , Lightest, most affordable camera “point-shoot-detect”. Introductory Nett Price of R 11 990.00 + VAT while stocks last. |
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Gas Leak Detectors |
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Gas Leak Detectors |
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Part No: GS-5800 |
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Ultrasonic Gas Leak Detector, 20 to 100 KHz, Bar LED , for Gas Leaks. |
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Part No: GS-400 |
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Ultrasonic Transmitter, Output 49 KHz (Used with GS5800) |
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Lutron |
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Lutron |
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Notes on Gas Sensors, Detectors and Monitors with alarms. Gas detectors as well as gas sensors interact with a gas to initiate the measurement of its concentration which could be used to sound an alarm. The gas detector of gas sensor then provides output to a gas instrument to display the measurements. Common gases measured by gas detectors and gas sensors include ammonia, aerosols, arsine, bromine, carbon dioxide, carbon monoxide, chlorine, chlorine dioxide, Diborane, dust, fluorine, germane, halocarbons or refrigerants, hydrocarbons, hydrogen, hydrogen chloride, hydrogen cyanide, hydrogen fluoride, hydrogen selenide, hydrogen sulfide, mercury vapor, nitrogen dioxide, nitrogen oxides, nitric oxide, organic solvents, oxygen, ozone, phosphine, silane, sulfur dioxide, and water vapor. Important measurement specifications to consider when looking for gas detectors and gas sensors include the response time, the distance, and the flow rate. The response time is the amount of time required from the initial contact with the gas to the sensors processing of the signal. Distance is the maximum distance from the leak or gas source that the sensor can detect gases. The flow rate is the necessary flow rate of air or gas across the gas detectors or gas sensors to produce a signal. Gas detectors and gas sensors can output a measurement of the gases detected in a number of ways. These include percent LEL, percent volume, trace, leakage, consumption, density, and signature or spectra. The lower explosive limit (LEL) or lower flammable limit (LFL) of a combustible gas is defined as the smallest amount of the gas that will support a self-propagating flame when mixed with air (or oxygen) and ignited. In gas-detection systems, the amount of gas present is specified in terms of % LEL: 0% LEL being a combustible gas-free atmosphere and 100% LEL being an atmosphere in which the gas is at its lower flammable limit. The relationship between % LEL and % by volume differs from gas to gas. Also called volume percent or percent by volume, percent volume is typically only used for mixtures of liquids. Percent by volume is simply the volume of the solute divided by the sum of the volumes of the other components multiplied by 100%. Trace gas sensors given in units of concentration: ppm. Leakage is given as a flow rate like ml/min. Consumption may also be called respiration. Given in units of ml/L/hr. Density measurements are given in units of density: mg/m^3. A signature or spectra measurement is a spectral signature of the gases present; the output is often a chromatogram. Common outputs from gas detectors and gas sensors include analog voltage, pulse signals, analog currents and switch or relays. Operating parameters that are important to consider for gas detectors and gas sensors include operating temperature and humidity. |
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Part No: TM-SRD100 |
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Refrigerant Gas Leak Detector. CFC’s- R11,R12, R113+ HCFC’s- R22, R502, R500+ HFC’s- R134A, R123, R125, R23, etc. |
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T + M |
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Part No: Altair-Pro |
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Gas Detector with Alarm for one of many gasses i.e. O2, CO, H2S, HCN, CL2, SO2,NO2,NH3,PH3,O3,02-R. Adjustable alarm set Points, Ruggedised rubber casing. |
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Copyright © 2009—2012 Test and Measurement Instruments C.C. | All rights reserved Gas Leak Detector Meters |