Does Propane Rise or Fall?
Propane falls. It is heavier than air, so a leak sinks, spreads along the floor and pools in low spots, which is why propane alarms mount near the floor.
Read Article→Learning Center
Plain-language explanations of the measurements, sensors and numbers behind environmental monitoring.
Where to Place a Propane Detector
Mount a propane detector low, within about 12 inches of the floor, in the room with the propane appliance or wherever leaking gas would pool.
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CAT Ratings Explained Properly: Why CAT IV 600V Can Be Safer Than CAT III 1000V
How much transient energy the meter can survive. It is about where in the installation you are, not the voltage.
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Does Natural Gas Rise or Fall?
Natural gas rises. Methane is lighter than air, so a leak drifts upward and collects under the ceiling, which is why natural gas alarms mount high.
Read Article→Multimeter vs Clamp Meter: Which Tool Measures What?
Multimeters for voltage, resistance and components; clamp meters for current without breaking the circuit.
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Gas Detector Sensor Types Explained
Four sensor types cover consumer gas detection: semiconductor (MOS) in sniffers and plug-in alarms, catalytic bead and infrared for LEL readings, and electrochemical cells for CO.
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Where to Place a Natural Gas Detector (and How High)
Mount a natural gas detector high, within about 12 inches of the ceiling, in the room with the gas appliance, away from the range, vents and windows.
Read Article→What Is True RMS on a Multimeter?
The way a meter calculates AC values. Averaging meters guess a sine wave; True RMS measures what is there.
Read Article→Gas Detector vs Smoke Detector: What Each One Senses
A smoke detector senses particles from a fire that is already burning. A gas detector senses unburned fuel before it ignites. Neither responds to what the other is built for.
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Thermal Camera vs Borescope: Which Inspection Tool Does What?
One finds where to look from outside; the other looks inside. They are a sequence, not a choice.
Read Article→Plug-In vs Battery Gas Detector
For a combustible gas alarm, plug-in with battery backup is the default and usually the right choice. Battery-only gas alarms are rare because the sensor heater drains batteries too fast.
Read Article→Does a Carbon Monoxide Detector Detect Natural Gas?
No. A CO detector cannot sense natural gas, propane or methane, and a smoke detector cannot either. Only a combustible gas sensor responds to a fuel leak.
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