The STEL (Short Term Exposure Level) function measures the level of toxic gas during a fifteen (15) minute interval and alarms when the preset STEL value in parts per million is exceeded. The alarm levels are as follows:

 

STEL

TWA

Ammonia

35 ppm

25 ppm

Carbon monoxide

100 ppm

25 ppm

Chlorine

1 ppm

0.5 ppm

Chlorine Dioxide

0.3 ppm

0.1 ppm

Hydrogen Cyanide

4.0 ppm

2.0 ppm

Hydrogen sulfide

15 ppm

10 ppm

Nitrogen Dioxide

5.0 ppm

3.0 ppm

Phosphine

1 ppm

0.3 ppm

Suphur Dioxide

5 ppm

2 ppm

To enter the TWA/STEL Menu, depress the “SELECT” pushbutton as de- scribed in Section 6.2 when the TWA/STEL Menu screen is displayed. The instrument will display one of the following screens:

<gas> TWA/STEL MENU

For Toxic Gases

STEL = 0 ppm

 

 

TWA = 0 ppm @ 0:05

 

RESET

SHOW

 

DISABLE

TWA/STEL

STEL and TWA values are calculated. STEL averages exposure for the latest fifteen (15) minutes. TWA shows the eight-hour average exposure. Both measures start from zero when the instrument is turned on. The TWA reading accumulates total exposure since turn-on or “RESET” and is calcu- lated as if the total exposure occurred in a standard eight-hour shift.

The “RESET/DISABLE” pushbuttons allows the user to reset the values and time on the display to “0”. One of following screens will be displayed when the “RESET/DISABLE” pushbuttons are depressed:

<gas> TWA/STEL MENU TIME AVERAGE VALUES

For Toxic Gases

RESETDISABLE

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Energizer PORTABLE GAS DETECTION INSTRUMENT manual Stel TWA, Reset Show Disable TWA/STEL, Resetdisable

PORTABLE GAS DETECTION INSTRUMENT specifications

The Energizer Portable Gas Detection Instrument is an innovative device designed for the safety and convenience of users in various environments. It is specifically engineered to detect hazardous gases, offering a reliable solution for industries such as oil and gas, waste management, confined space entry, and emergency response.

One of the primary features of this instrument is its multi-gas detection capability. Equipped with advanced sensors, it can simultaneously monitor a variety of gases, including hydrogen sulfide (H2S), carbon monoxide (CO), methane (CH4), and oxygen (O2). This versatility makes it indispensable for workers who are exposed to potentially dangerous atmospheres, providing real-time data to help ensure their safety.

The Energizer Portable Gas Detection Instrument employs state-of-the-art sensor technologies, including electrochemical, catalytic, and infrared sensors. Electrochemical sensors are particularly effective for detecting toxic gases with high sensitivity and low cross-sensitivity, making them ideal for use in confined spaces. Catalytic sensors are used for combustible gases, providing a consistent and accurate reading of gas concentrations, while infrared sensors offer a non-contact method for measuring hydrocarbons and other gases, enhancing the safety profile of the device.

This instrument is designed with user-friendliness in mind. It features a large digital display that provides clear and concise readings, allowing operators to quickly assess gas levels even in low-light conditions. Furthermore, the instrument includes audible and visual alarms that alert users to high gas concentrations, ensuring prompt response in emergencies.

Durability is a key characteristic of the Energizer Portable Gas Detection Instrument. Built to withstand harsh industrial environments, it is often housed in rugged, IP-rated enclosures that protect against moisture, dust, and impacts. This ruggedness is complemented by a long battery life, which ensures that the device remains operational during extended periods of use.

In addition to its physical capabilities, the device also offers advanced connectivity features. Many models come equipped with Bluetooth or Wi-Fi capabilities, allowing for remote monitoring and data logging. This function is particularly useful for compliance purposes, enabling employers to maintain accurate records of gas exposure levels over time.

In summary, the Energizer Portable Gas Detection Instrument combines advanced sensing technologies, user-friendly features, durability, and connectivity, making it an essential tool for promoting safety in environments where gas hazards may arise. It stands out as a reliable choice for professionals committed to ensuring a safe working environment.