Avtron T477w Bonding Meter

US $1100

Methuen, Massachusetts, United States
Mar 27th

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Avtron T477W Bonding Meter Avtron T477W Bonding Meter This unit is about 24 years old, but looks like it hasn't been beaten up too much. The battery won't hold a charge anymore, but it does power up with the charger attached. I was able to change ranges and the backlight illuminates, but since the leads connect to the same port as the power supply, I couldn't run any tests. Ideal for aircraft system bonding testing. The unit is contained in a protective carrying case complete with the C22161 pistol grip probe set, clamp probe set, and battery charger. Power is obtained from a rechargeable battery pack. Battery capacity is adequate for eight (8) hours of continuous operation. Power is conserved by a 52 second timer which automatically powers down the display. Operation and display are initiated by depressing the TEST button. Built-in display illumination provides for use at nighttime or with inadequate ambient light. These features allow high accuracy and simplified set-up. The low voltage and current output will not cause ignition of flammable gas, as certified by Underwriters Laboratories per UL 913, standard entitled “Intrinsically Safe Apparatus and Associated Apparatus, for use in Class I, II, and III, Division I Hazardous Installation.” The meter is approved for use in Class I, Groups A, B, C, or D, which includes hydrogen and gasoline flammable vapors. The Model T477W Bonding Meter is designed to accurately measure resistance, less than 2.0 ohms, as required by electrical bonds. The unit is approved for use in hazardous environments such as around aircraft, fuel installations, fuel cells, and gas systems. Four resistance ranges are provided for measurement sensitivity. These are 2, 20, 200 and 2000 milliohms full scale. Operation of the TEST button automatically changes the range to the next highest range each time it is depressed. Continued operations of the TEST button re-cycle the range changes. Resistance measurements are made using a pistol grip probe connection. The pistol grip probe set (P/N C22161) is easy to use with convenient pistol grips for firm control and needle points for sure penetration of surface coatings. This probe set is also easy to use in tight areas such as around wing tanks. Remember: I'm not an expert on any subject. With regard to the equipment I sell, I am a full-time amateur and part-time idiot. My descriptions are simply accounts of my findings and observations while fumbling around with whatever contraption happens to come my way. They are not guarantees, warranties, endorsements, or Good Housekeeping Seals of Approval. Buy it or don't. Leave me out of the decision making process. A simple rule to follow on these auctions: Imagine that you're buying from an untrained monkey. With maybe better hygiene. Please email any questions. All equipment is entrusted to the smartest, most capable employee for testing. (OK, I work alone. Sue me.) In most cases, I can ship as soon as payment is received. As always, local pickups are welcome, at no charge! Thanks for looking!