RKI Force Monitor

RKI GX-Force Offers

Suitable for many applications, this gas detector is ideal for confined spaces and safety monitoring with its Normal Operating mode and leak investigations with its Leak Check mode. Controlled by a microprocessor, this gas detector continuously checks itself for sensor connections, low battery, circuit trouble, low flow, and calibration errors. In addition, this detector features a large LCD that shows all gas readings, battery level, and current time and automatically backlights in alarm conditions.

Features

• Simultaneous monitoring of one to four gases
• Liquid crystal display (LCD) for complete and understandable information at a glance: Simultaneously shows the gas reading for all installed sensors and shows information for each of this multi-gas detector's operating modes
• Ultrabright alarm LEDs: The six alarm LEDs around the edge of the case alert you to gas, low battery, and failure alarms
• Distinctive audible/vibrating alarms for dangerous gas conditions and audible alarms for unit malfunction
• Microprocessor control for reliability, ease of use, and advanced capabilities
• Data logging functions
• Alarm trend data
• STEL, TWA, and over range alarms
• Two operating modes: Normal and Leak Check
• Internal sample pump with 100' (30.48 m) sample range: Diaphragm pump inside this multi-gas detector draws the sample to the sensors (the pump is not user serviceable and sample hose lengths of more than 100' (30.48 m) are not recommended for this multi-gas detector because of flow rate reduction)
• 30 hours of operation (Lithium-ion battery)
• Easy to grip lightweight design
• Field replaceable sensors and filters
• Impact resistant body
• Large LCD auto-backlit display
• Peak readings
• Built-in time function
• Lunch break feature
• CSA "C/US" classified as intrinsically safe
• Filter casing
• Gas inlet and outlet
• Wrist strap holes
• Vibrator: A vibrating motor inside this multi-gas detector's case vibrates for gas alarms, unit malfunctions, and as an indicator during normal use of the various modes of this multi-gas detector
• Control buttons: Two control buttons, AIR and POWER MODE, are located below the LCD
• Printed circuit boards (PCBs): This multi-gas detector's printed circuit boards analyze, record, control, store, and display the information collected and the circuit boards are located inside the case, they are not user serviceable
• Exhaust: Sample gas flows from the sensors to the exhaust port on the back of this multi-gas detector

Buzzer

One solid-state electronic buzzer is located inside the case. Sound exits the case through a hole in the middle front of the case. The buzzer sounds for gas alarms, malfunctions, low battery voltage, and as an indicator during use of the multi-gas detectors many display and adjustment options.

Charging indicator LED

One LED located near the bottom of the instrument lights up green when a power cable is plugged into the instrument's charging/data port. The LED changes to orange as charging begins. When charging is complete, the LED turns green until the instrument is disconnected from power.

Case

This multi-gas detectors sturdy, high-impact plastic case is radio frequency (RF) resistant and suitable for use in many environmental conditions, indoors and out. The case is dust-proof and waterresistant. A clear plastic window on the front of the case allows for LCD viewing.

Flashlight LED

A white LED is visible through a round, raised, frosted lens in the top of the case. This LED can be used to provide extra light, if necessary. The flashlight can be activated in the Display Mode.

Flow chamber

The flow chamber is on the back of this multi-gas detector and is held in place by four Phillips screws. The flow chamber seals to the rubber sensor gasket which seals to the sensor faces inside this multi-gas detector and routes flow from the pump to the sensors and to the exhaust port (on the back of this multi-gas detector's case).

Sensors

This multi-gas detector uses three sensors to monitor combustible gas, oxygen (O2), carbon monoxide (CO), and hydrogen sulfide (H2S) simultaneously. The sensors are located inside this multi-gas detector and are held in their sockets by the sensor retainer and back case. The sensors use different detection principles, described in the following sections.

Combustible gas sensor

The combustible gas sensor (NCR-6309) detects combustible gas in the %LEL range using 2 catalytic elements: A standard element and a poison-resistant element that is resistant to sensor poisons like silicone. The element's electrical resistance changes based on the reaction of gas with oxygen. The change in resistance affects the current flowing through the element. This multi-gas detector's circuitry amplifies the current, converts the current to a gas concentration, and displays the concentration on the LCD. The standard calibration for the combustible gas sensor is to methane, but the sensor will still detect and respond to a variety of combustible gases.

AIR mode

• Turns on LCD backlight
• Resets alarm condition if LATCH is set to ON in Maintenance Mode
• Enters User, Maintenance, and Gas Select Mode when used with POWER MODE button
• Activates the demand zero function (adjusts this multi-gas detectors fresh air reading)
• Changes the value of a parameter available for adjustment
• Scrolls through parameter options

POWER mode

• Turns this multi-gas detector on and off
• Turns on LCD backlight
• Enters and scrolls through Display Mode
• Enters instructions into this multi-gas detector's microprocessor
• Resets alarm condition if LATCH is set to ON in Maintenance Mode
• Enters User, Maintenance, and Gas Select Mode when used with AIR button

O2/CO/H2S Sensors

The O2, CO, and H2S sensors are electrochemical cells that consist of two precious metal electrodes in a dilute acid electrolyte. A gas permeable membrane covers the sensor face and allows gas to diffuse into the electrolyte. The gas reacts in the sensor and produces a current proportional to the concentration of the target gas. This multi-gas detector's circuitry amplifies the current, converts the current to a gas concentration, and displays the concentration on the LCD.

Inlet filter holder

The filter holder is a clear plastic dome-shaped piece on the top of the case. A male quick connect fitting is located on the inlet filter holder. This is the multi-gas detector's inlet fitting. The filter holder may be removed by turning it counterclockwise and pulling it away from the case. One flat membrane disk hydrophobic filter, a wire mesh disk, and a rubber filter retaining gasket are held in place by the filter holder and are located in the bottom of the case chamber where the filter holder is installed.

USB type-C data/charging port and protective cover

A USB type-C port is located on the bottom of this multi-gas detector, protected by a rubber cover. Pry off this cover when plugging in a USB Type-C cable (for charging or data transfer). A USB Type-C adapter cable can be connected to a computer's USB port to transfer data to this multi-gas detector's Data Logger Management Program.

Applications

• Personal monitoring
• Confined spaces
• Refineries/petrochemical
• Utilities
• Oil and gas
• Water/wastewater
• Fire services
• Construction
• Sewage treatment plants
• Power stations
• Mines
• Paper mills
• Drilling rigs
• Tunnels
• Hazardous waste sites

WARNING: Cancer and Reproductive Harm. https://www.p65warnings.ca.gov/