Rack-mounted and continuous Precision Measurement of Protective Heat Treating Atmospheres

CO, CO2, CH4, H2 – Used for Carburizing, FNC, and Nitriding

The rack-mounted continuous gas analyzer can be used for carburizing, neutral and ferritic nitrocarburizing heat treat applications. The measurement of the process gas provides calculated values for %C, KN, KC.  In endothermic based atmospheres, the instrument in conjunction with carbon probes can be used to automatically adjust COF to provide the most precise atmosphere measurement.


Enhances quality through process repeatability and accuracy
On-screen trending chart
Auto adjust mode replaces manual adjustment of COF - Probe+IR
Sooting, air leaks, water leaks, and radiant tube leaks quickly identified through 3 gas measurement
Auto-Calibration integrated into the MGA 6010
Session recording with customizable user names and equipment
FNC and Nitriding Calculations with optional H2 Cell

RGA Features

Integrated automatic calibration ports
4-20mA output for each gas
Two user-assigned alarm outputs with visible alarm indication
Custom configurable calculations and gas ratios available
Digital inputs for: Pump Start/Stop; Inhibit COF/PF adjustment; Initiate Zero calibration; Initiate Span calibration;
IR %C calculation and indication of probe %C
Two Ethernet ports (one direct to screen, another direct to sensor)
Capable of Probe + IR for automatic adjustment of COF / PF
Automatic sampling parameters prevent damage to instrument
Color touch screen display
Optional stainless steel transducers are required for use with non-dissociated Ammonia

Features of Included Software

Language editor
Data manager for downloading
Print charts and tabular data
Setup facility and furnace identifiers
Add notes when capturing data
Real time graphical display on a PC
Export utilities
Backup data manager

Sampling methodExtraction by internal pump (when necessary)
Measurement Method (CO, CO2, CH4)Non-Dispersive Infrared (NDIR)
Measurement Method (H2)Thermal Conductivity
Accuracy and repeatability± 1% of full scale
Recommended Factory Calibration IntervalAnnual
Flow MeterFront of panel and also on-screen
AC Power Requirements90 to 230 VAC, 50 to 60 Hz, 60 Watts
CommunicationsEthernet, USB(A), USB(B), RS485 Modbus
Data StorageContinuous automatic data logging
Data RetrievalXGA Viewer Software (included) or on-screen
Operating Temperature32° to 122° F (0° to 50° C)

CO: Carbon MonoxideRange: 0 - 30%
CO2: Carbon DioxideRange: 0 - 2.0%
Optional Range: 0 - 20.0%
CH4: Natural Gas/Methane
Range: 0 - 20%
Optional H2: HydrogenRange: 0 - 100%
Calculated % CarbonRange: 0.1 - 2.00%
Suggested COF / PF factors
Onboard Data Acquisition
Enhanced with Nitriding/FNC CalculationsCarbon Potential (KC)
Nitriding Potential (KN)

COF limits predetermined for % Carbon adjustment
Millivolt and temperature limits for furnace gas sampling
Switch from probe + IR control to "monitor" mode

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NDIR Analyzers

(Q9) How often should I calibrate the RGA?

If the device is used...Then perform a calibration...
Less than weeklyPrior to use

(Q10) How much flow do I need to get a good sample?

SSi recommends 1.5 scfh.  However, anywhere from 1 – 2 scfh is acceptable.

(Q11) How do I keep a clean sample going into my RGA?

The bowl filter leading into the unit contains a filter element (p/n 37051) that can be replaced when it becomes dirty.

(Q12) What are the IR shim and CH4 factors?

These are factors that go into the calculation for determining the %Carbon. Manually adjusting them will have a direct effect on the %Carbon being calculated.  Contact SSi for more information.

(Q13) How do I add an external instrument?

For RS485 Communications:

  1. Wire to the terminals 1561 and 1571 inside the RGA.
  2. On the RGA screen interface, go to the Menu and log in with the number 2.
  3. Select “Communications and source setup” > “Atmosphere/Temp sources”
  4. Here you can edit to add your Probe Temp/mV Instrument or Furnace temp Instrument.
  5. When you have selected the appropriate device, edit the Probe Temp/mV instrument address or the Furnace temp instrument address.

(Q14) How do I set the Device time on the RGA?

To set the Device time to match the Touch screen date and time:

  1. Go to Menu and log in with the number 2.
  2. Then select “Instrument set up” > “General set up.”
  3. Edit the Device time to match the touch screen time by selecting “Device Time” > “Edit.”

(Q15) How do I get Nitriding calculations on my RGA?

  1. Call SSi  at 513-772-0060 for a Code of the Day login number.
  2. Log in with the code.
  3. Select the “Factory use only” option.
  4. On the following screen select “Set Instrument Type.”
  5. Set the Nitrider Calculations option to Enable.
  6. You will then need to cycle power to have the correct Calculations page displayed.

(Q16) Can my RGA do Dew point?

The MGA displays a calculated dew point using gas values and requires assumptions regarding the composition of the gas being sampled. Since these assumptions are not always accurate, the resulting dew point is not always accurate.

(Q17) How do I set up my Auto calibration?

  1. First, make sure you have the Zero and Span gas tanks hooked up to the correct calibration ports on the side of the RGA.
  2. On the Interface go to Menu and log in with the number 2.
  3. Select “Automatic Calibration setup.”  You will see the options to set the Auto calibration to YES or NO.
  4. Select “YES” to set up your desired calibration purge and intervals.

(Q18) Where should I mount the RGA enclosure?

SSi recommends that the RGA be mounted fairly close to the source it is sampling. It can be further away, but a longer sample tube increases the likelihood of leaks or contaminants.

(Q19) What is the recommended pressure for calibration gases?

The incoming pressurized gas goes through a small fixed orifice inside the analyzer, which should require between 20 and 50 psi to maintain proper flow.

(Q20) How do I clear the Auto calibration alarm?

  1. Go to the Menu and log in with the number 2.
  2. Select “Automatic Calibration set up” then change the Auto Calibration from YES to NO. That will clear the Auto Calibration alarm banner.

**It is important to note WHY you were getting the alarm, to make sure that you were getting adequate flow and the calibration was able to complete successfully.

Super Systems Inc