This particular analyzer is one of RIGAS’ favorites to work on (i.e., repair).
Here is a list of some of our checks that we perform before we release your analyzer for shipment:
- Noise on range X1 should be minimal (±1 count)
- All ranges should be correlated (especially those with an optional range trim board)
- Response to certified calibration gas should be equal to or better than factory specifications
- When TP5 = 5 VDC then [a] the display reads 100.00,  analog output is either 100mV or 1V or 5V (depending on jumper configuration,  isolated current output = 20 mADC
- Analyzer is clean
- Insulation is re-glued
- Frayed wires are fixed
- Plexiglas is grounded
- A/C power switch leads are coated with “liquid electrical tape” to prevent inadvertant electrical shock to the end user
- Ribbon cables are pristine
- Rear terminal strip has a sticker that shows what functions are on what terminals
- Zero pot (potentiometer) is greater than 50% (the higher the number here, the less contamination in the analyzer tubing)
- It needs to look good again (paint job if necessary)
- Flame safety circuits MUST work properly
- Backpressure regulator works as designed (and controls at a very reliable value)
- There’s a bunch more, but we don’t want to bore you with the entire list!
Give us a try by calling us at 877-616-0600.