Safety Instruments Inc.

12/06/2021

Fixed Stationary Air Monitors

12/06/2021

The smallest and lightest 4-gas meter on the market.

12/06/2021

08/13/2021

Training: Keep records and make sure your employees are trained on the use of a gas detector as well as all safety procedures.
Gas Detectors are considered life safety equipment and should be used and maintained in accordance with manufacture instructions. Know what gasses you may be exposed to, and make sure you use a meter that can monitor for those gasses in the range of safety. Never ignore an alarm or treat it lightly. Immediately leave an area if a gas alarm occurs, even if you believe it might be a false alarm.

08/12/2021

Sensor Life: Most Toxic and Oxygen sensors have a shelf and working life or 1-3 years. Most Combustible sensors have no shelf-life and generally last 2-5 years. Sensors should be replaced a regular service intervals to ensure they do not suddenly fail.

08/11/2021

Sensor Poisoning: Catalytic combustible gas sensors are susceptible to several different compounds which can result in irreversible poisoning or reduce the sensitivity of the sensor to measure and respond to different gases. The nature of the poison could be physical- soot or other bi-products of combustion which block the pores in the bead or chemical with molecules forming strong bonds with the catalyst and reducing activity.
Poisons such as silicon, lead, sulfur, or phosphorus-based compounds can result in immediate sensor failure. The most common chemicals that can poison catalytic sensors are those containing silicon, such as common oil, and lubricants and silicone compounds used in machinery. The simple act of cleaning your instrument with a silicon-based cleaning product or hand cleaner can kill the sensor.

08/10/2021

Calibration Gas: Use a certified traceable test gas, recommended by the manufacture for the calibration of the confined space gas meter, which has not expired.
The use of expired or non-certified traceable gas mixtures can lead to inaccurate calibrations, and consequently, inaccurate readings in the field.

08/09/2021

Calibration: It is important to calibrate a portable gas meter at regular service intervals. Please consult the manufactures owner’s manual for instructions on the frequency of calibration. Most manufactures recommend calibration once every 30-90 days. If a meter fails, the daily bump test it should be calibrated prior to use. Calibrating your meter at the manufacturers recommended interval will ensure that your meter reads accurately.

08/06/2021

Bump Test: This is a qualitative function check in which test gas is applied at a concentration and exposure time sufficient to activate all alarm settings. The purpose of this check is to confirm that sensor(s) respond accurately and quickly to the gas and that the alarms operate properly.
Perform a Bump test prior to each use and calibrate the portable gas meter if it is out of calibration by more than +/- 10% of the test gas value.
For example: if you apply 50% LEL methane to a combustible sensor, +/-10% of 50% LEL is +/- 5% LEL (acceptable tolerance 45%-55% LEL). If you apply 25 ppm H2S to an H2S sensor then +/-10.

08/05/2021

Pump: If your portable gas detection meter has a pump, it is important to check the pump stall feature daily. This test should be performed with the hose(s) and probe/filters attached. First turn on the meter allow it to warm-up. Once the meter has been fresh air zeroed, block the probe inlet with your finger. The meter should stall and display a low flow message within a few seconds. Once the meter stalls, remove your finger and restart the meter to ensure it resets the low flow alarm and returns to normal operation. If the meter does not stall check all connections to ensure they are airtight. If the meter does not display a low flow condition when blocking the inlet, remove the meter from service and return it for repair.

08/04/2021

Filters: Filters protect a portable gas meter from damage for particles and *moisture. Filters are easy to replace and are very inexpensive. Review the condition of the filters and replace them immediately if they become contaminated with dirt or moisture. Routinely changing filters will protect your meter from damage and will help to ensure its proper operation.
*Some filters only provide particulate protection. Only Hydrophobic filters protect against moisture.