Essential and user-friendly gas analyser. AGS-690 can be used for both exhaust check in mandatory inspections and for routine service and repair operations on vehicles.

SKU: AGS-688-1 Category:


Measuring Range:

CO 0 TO 9.99 %vol Res. 0.01

CO2 0 TO 19.9 %vol Res. 0.1

HC HEXANE 0 TO 9999 ppmvol Res. 1

02 0 TO 25 %vol Res. 0.01

NOx 0 TO 5000 ppmvol Res. 1

Lambda 0.5 TO 5 Res. 0.001 RPM




Measuring bench: Sensors AMB2

Measured gas sampling rate: 4 l/min (with a 6 m sampling hose)

Automatic and continuous condensed water purge

Semi-automatic leak test, with probe manual closing

Automatic flow check with minimum flow alarm

Automatic O2 sensor operating life checking (< 5 mV )

Protective filters for gas/water pump heads, externally mounted for easy service, without removal of official seals

Automatic ambient pressure compensation, from 85,0 to 106,0 kPa

Calibration by means of reference gas cylinder

Automatic autozero

Warm-up time at 20°C: 10 min. max

Response time for CO, CO2 and HC < 15 seconds



RPM reading via inductive or capacitive clamp

PT100 (DIN43760) oil temperature probe input

RPM/oil temperature reading via 433 MHz radio receiver (optional)

Serial connections: PC via USB B (slave mode); PC via RS-232 (9600,N, 8,1); PC via RS-485 network (9600,N, 8,1)

Software programming/update via RS-232



12 Vdc typ (11-15 Vdc) power supply

1.5 ADC power consumption

Operating temperature: 5 to 45°C

Dimensions: 434x190x291 mm

Weight: 5kg approx

1 – Are the Analyzers and Smokemeters MCTCNET2-type approved?

All of the Brain Bee analyzers and smokemeters will be MCTCNET 2 – type approved as soon as the Ministry will be able to do it (probably not before October 2010). New tools will be released with MCTCNET 2 type-approval, while the tools sold earlier will have to be fitted with a hardware key and a new software. Costs will be in any case quite low.


2 – Can the gas line be interfaced with Bluetooth?

Yes, in several ways, in any case always with the introduction of the Bluetooth BT100 modules. A tool configuration with PS170 supplier module is also available making the whole setup completely independent and wireless.


3 – Does it require special maintenance?

The manufacturing quality and the selection of materials give Brain Bee tools excellent operating reliability.



The device samples the exhaust gas by means of its probe, supplied as a standard.

By means of the interaction with the specific Brain Bee OMNIBUS 800 software  it is possible to perform all of the analyser functions and easily switch from the free measurement mode to the official test.


The operating principle is based on the measurement of the absorption degree by infrared rays of gases which are present in the sample during the analysis.


AGS-690 – thanks to its high accuracy technology – is able to assess absorption on the several frequency bands of the components – CO, CO2, HC – thus obtaining the associated concentration values.

Concentrations of Oxygen and NO (optional) are measured by electrochemical sensors.



The completely new Water Separator Group is injection moulded, in order to reduce the gas path’s length and maintenance times.

The separation filter consists of two sections: a mechanical filter and a coalescent (condensation) one.

A single axis, dual-head pump allows for continuous removal of the water which condenses into the separator.

AGS-690 has exhaust gas and fresh air (autozero) inputs, and also a dedicated inlet for calibration with reference gases.



The AGS-690 was designed as a basic exhaust gas analyser; nevertheless, its wide range of optional accessories allows for a rich set of additional functions:

– An integrated RPM meter is available, which can support any of these choices: induction clamp, capacitive clamp orMGT-300.


The external radio module allows for the wireless connection to the MGT-300/R RPM meter.

– It is possible to connect to a PC via RS232, USB or with a BT-100 Bluetooth ® module.

– AGS-690 allows for connection to the smokemeter through the omniBUS port: in this case the analyser behaves like a terminal to the smokemeter, where opacity of diesel exhaust can be displayed