Frequently Asked Questions

Working in a technical field, there are bound to be questions on the setup and operation of our products. Here we provide answers to many of the questions our tech support team answers multiple times on a day-to-day basis.

Don’t see your question listed? Rather speak to a live specialist? Have other concerns? Feel free to call our technical support staff at 1-800-736-4666. When prompted for an extension number, press two (2), and then two (2) again to reach our technical support queue. Technical support specialists are available Monday – Friday from 8AM – 5PM EST.

Combustion Analyzers

Either the sensor is installed incorrectly, or the sensor is expired and needs replaced.

The CO2 reading is a calculated number based on the fuel selected in the analyzer setup and the O2 reading. Typically, the CO2 appears stuck when the O2 sensor needs replaced and the O2 reading is always at 0.0%.

No. Each time you power up the instrument, it goes through a 60 second warm-up countdown. At the end of that countdown, the analyzer sets the O2 reading at 20.9% (ambient air O2 content) and the CO at 0 ppm, effectively calibrating the O2 channel.

Enter into the main menu, then the diagnostics menu, and finally select the O2 Sensor Life option. Depress the F3 key to reset the date code. Enter the O2 date code from the new sensor and depress the center key. Verify the month and year are correct, then depress the center key again. Return to the main menu and begin testing. See section 5.4.3 of the user manual for further specification.

Depending on which model you have, it can be either 6 months or 1 year. PCA, PCA2, Fyrite Tech60, Fyrite Pro and ECA450 have a 6 month calibration interval. Fyrite InTech, Fyrite Insight, Fyrite Insight Plus, PCA3 and PCA 400 have a 1 year calibration interval.

The B-Smart CO sensors are standard CO sensors that are run through multiple gas level tests and are given a B-Smart code based on the sensor output. Once installed in an analyzer, this B-Smart code is entered into the analyzer, which tells the instrument how to interpret the sensor output, and what to display on the analyzer screen. See section 5.4.5 of the user manual for further specification.

This is an indication that the thermocouple is not connected to the correct input, is bad, or the wires inside the thermocouple male connector on the probe assembly are broken or disconnected. See section 6.1 of the user manual for further specification.

These are all calculated values that require all inputs be present and that the O2 reading is less than 16%. If the O2 reading is 16% or higher, the programming of the analyzer will only show dashes, thus indicating an extremely poor combustion process, or no valid combustion process is occuring. This can also occur if there is a leak or obstruction in the probe assembly, or an inoperable sample pump. See section 6.1 of the user manual for further specification.

Make sure the analyzer is in the RUN mode and the pump is running. Check that the T-Stack is indicating a temperature, and that the O2 level is below 16%. If the O2 level is 16% or higher, check the device you are testing to make sure it is actually exhausting gasses lower than 16%. Check the probe for leaks or obstructions, and check the pump for proper vacuum or pull.


Please see our technical bulletin HGM-MZ Sample Pump Flow and Manifold Testing for information on resolving an 1800 fault. It is the first topic covered in the bulletin. See section 4.5.3 of the user manual for further specification.

Each zone of the HGM-MZ can be set for a different refrigerant in the 1st Zone Setup screen. See section 4.2 of the user manual for further specification.

Each zone of the HGM-MZ can be set for different alarm levels in the 2nd Zone Setup screen. See section 4.3 of the user manual for further specification.

You must first acknowledge all alarms, then the alarms will reset automatically once the affected zones are sampled again.

If the HGM-MZ is set for AUTO Acknowledge, the MZ will acknowledge automatically. If the HGM-MZ is set for MANUAL, it will be necessary to highlight each zone in the alarm screen and depress the left arrow to acknowledge each zone. See section 4.4.4 of the user manual for further specification.

All faults will reset automatically once the fault condition is corrected.

Setting the sample tube length is required so the HGM-MZ samples each zone for the correct amount of time to pull the sample into the HGM-MZ for proper analysis. See section 4.2.3 of the user manual for further specification.

Annually replace the hydrophobic filter inside the case and the external charcoal purge filter. Sample tube line end filters should be cleaned or replaced annually as well. See section 5.1 of the user manual for further specification.

Ideally, the purge line should be routed outside the building to an area that is free of all contaminates. If this is not possible, the purge line should be routed outside of any area where there might be refrigerant. The charcoal purge filter should be used in all instances. See section 2.2.3 of the user manual for further specification.

You can use a line end water stop P/N 3015-5512 or an in-line water trap P/N 0007-1655 on each line that presents a moisture issue. See section 2.2.7 of the user manual for further specification.

You must purchase and install a 4/20 ma dual channel output PC card P/N 3015-5512. See section 2.9 of the user manual for further specification.

H-10 PRO

  1. Remove the two Phillips head screws that are located inside the probe storage area.
    CAUTION: DO NOT loosen or remove the two screws located on the back slotted area of the chassis.
  2. Disconnect the battery and remove the chassis from the case, invert it, and lay it on the workspace.
  3. Remove the four Torx screws from the bottom of the pump using a T6 Torx driver.
  4. Disassemble the two plates and rubber valve plate from the pump.
  5. Remove the rubber valve plate and clean with a clean, dry cotton swab and a can of keyboard duster.
    CAUTION: When using the keyboard duster, make sure you hold the rubber valve plate to avoid blowing it from the bench top.
  6. Re-assemble in reverse order and check pump for proper operation.

For step-by-step photo instructions, download our H-10 Pro Pump Cleaning Guide

Ultrasonic Leak Detectors

An Ultrasonic Leak Detector is a leak detector based on ultrasound that can detect pressurized gas leaks for any gas, static leaks, and vacuum leaks. Gas leaks typically make high frequency sounds that are inaudible to the human ear. The detector listens for these sounds, and provides visual and audible feedback to the user to isolate a leak.

Yes. An ultrasonic leak detector can detect refrigerant and combustible gas leaks. It listens for high frequency sound waves, and is not limited to specific refrigerants or gases. It does not detect gas concentration (e.g. ppm), but only the sounds made by an active leak.

Yes. You must be very careful around ammonia refrigeration systems since ammonia is asphyxiating. It will not detect a leaked concentration (ppm), but only the sounds made by an active leak.

The detector is detecting sound, not a chemical property of the leaked gas. It does not matter what the gas is, as long as it is flowing.

No, since it does not detect a chemical in air it does not matter how much gas or refrigerant is in air. There are no chemical-based sensors that need to be replaced or can be damaged or over-saturated from high concentrations.

No, ultrasound travels at the same speed in calm or windy air and it travels much faster than wind. The speed of sound is 767 mph or 1,234 km/h. In high wind situations traditional refrigerant and combustible gas detectors may never see high enough concentrations to detect a leak.

Yes. Air sucked into a system from a leak point will generate ultrasound just like when it leaks under pressure out of the system. An ultrasonic leak detector is the only technology which can detect vacuum leaks from the outside of the system and pinpoint the leak point.

Typically 10 to 40 feet (3 – 13 meters) depending on leak size, shape and system pressure.

It is very easy to find where the leak is since ultrasound is a highly directional sound wave. It moves in straight lines and does not bend like our voice around objects. Tracing it will take you to the leak.

Leaks can be located very fast. Ultrasonic leak detection allows you to move more quickly around suspected points than you can with gas-specific sniffer leak detectors.

Not to audible sounds we hear, but there is a lot of ultrasound around us that we do not know is there since we cannot hear it. Example sources of ultrasonic noise are switching power supplies, variable speed drives (VFD), lighting systems, computer monitors and many others. Our technology will allow you to distinguish between leaks and mechanical sounds simultaneously so you can distinguish which is the leak.

Restrictions in pipe systems or leaks through valves generate ultrasound. Touching the valve with the touch probe attachment will transfer the leak sound to the ultrasonic leak detector which will indicate the leak.

You can detect in 10 minutes a faulty TXV where it can take you an hour with the usual (superheat) techniques.

Using the touch probe. You touch the valve and hear if the steam trap is cycling, stuck open, or closed

Yes. Each leaky trap can waste hundreds to thousands of dollars in energy costs per year. The Electric Power Research Institute (EPRI) estimates that in facilities using steam at any moment 20 – 30% of the traps leak.

Yes. The Tru Pointe 2100 can detect the sound condensate makes as it flows in a pipe.

The SoundBlaster is an ultrasound generator that helps you find leaks when you cannot pressurize a space. Examples include rooms, walk-in coolers, display cases, tanks, vehicle cabins, and more.

You place the SoundBlaster inside the cooler, room, or tank you want to test for (air) leaks and turn it on. You go to the outside, close the door, and using an ultrasonic leak detector you search for sound escaping from cracks or other problems in gaskets or seals.

Yes. Place the ultrasonicsound generator in the vehicle, close the doors and windows, and search with an ultrasonic leak detector from the outside around the seals. Similarly, you can find leaks in trunk seals or any other enclosures that need to be leak free such as tanks, truck trailers (refrigerated or normal), even the hatches on bulk carrier ships.

No. Sound does not travel well in pipes, and especially ultrasound which gets attenuated in long runs and in bends.

No, the sound generator will vibrate the thin sheet metal of the exchanger and give false positives

Yes, if it makes a lot of sound (it is large) and the pipe is not covered by thick insulation. However, sometimes it is necessary to leak test these portions at 500 psi with nitrogen.

Generally, no. Sometimes it is necessary to leak test these portions at 500 psi with nitrogen and cut a small slit on the jacket to insert a piece of ¼ tubing as a waveguide to check between the wall of the pipe and the insulation.

Usually, no. If the pressure is very high it is possible using the touch probe  and a metal rod nailed in the ground to locate the general vicinity, which may be enough.

Yes. An ultrasonic leak detector is the only detector that can locate a leak independent of gas from distance.

Friction generates ultrasound. These ultrasound waves propagate through a machine and can be detected at various points. The stronger point is where it is generated and it is usually in bearings. Similarly, arcing inside relays and contactors makes ultrasound even if they seem “normal:

Yes. You can listen to bearings and hear changes in sound as problems develop.

Yes. You can hear the sound of a bearing before you grease it, during (you can even hear the grease entering), and after so you know exactly when to stop.

The most common problem is arcing. Arcing ocurs in switches, contactors, and relays when the contacts wear out. Arcing is a phenomenon that can take place at any voltage, high or low. Arcing makes a sound like frying food.

Yes. Corona happens around high voltage insulators. Eventually it will turn into an arc with catastrophic results This happens in high voltage transformers

“Strange” sounds around motors, generators, power supplies and variable frequency drives (VFD). Most switching power supplies use high frequency transformers which exhibit a phenomenon called magnetostriction. This phenomenon causes the core of the transformer to constrict when the magnetic field around it rises very fast in a pulse like manner. This should sound like a high pitch tone, however if it is exhibiting crackling noises the core is either damaged or loose.  Similarly rotating electrical machinery should sound smooth and free from sparks and other transient noises. With consistent usage your ultrasonic leak detector will teach you which of these sounds are normal and which are not.

See section 5.6.2 of the EPRI Predictive Maintenance Primer

Fyrite Classic

The date code is printed on a sticker located on the label attached to your bottle of Fyrite fluid. It is the top number printed on the sticker. For an example, see our technical bulletin identifying your Fyrite fluid date code.