Model: M/1 Low Voltage Holiday Detector
Applications
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Use on thin film coatings on conductive substrates such as tanks, concrete, etc. 
Recommendations:
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Conforms to standards for low voltage holiday detectors, such as AMPP International RP0188 
Calibration
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Recommended Annually 
Specifications
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Outputs: 9v, 67.5v, 90v 
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Voltage Accuracy: ±5% 
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80 ohm. Resistance for coating on metal 
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90 ohm. Resistance for coating on concrete 
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(Factory setting is 80 ohm. See Instructions for information on changing setting to 90 ohm) 
Dimensions
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5' x 4' x 2' Case. 1 lbs. (127mm x 101mm x 50.8mm, 45kg)-Instrument in case 
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20" x 5.5" x 4", 3 lbs. (508mm x 139.7mm x 101.6mm, 1.35kg)-Shipping 
Model: M/1 Low Voltage Holiday Detector
The M/1 is known Worldwide as the best choice for the inspection of thin film coatings (0 to 20 mils). The M-1 now uses a 9v battery which can be replaced without opening the instrument case. With on-board calibration verification, the M/1 can be checked in the field with no other test apparatus needed. An LED lights on the front panel when the unit is in calibration and when a holiday is detected. The M/1 comes complete ready go to work right out of the box. Headphones may be used in noisy environments that drown out the normal audio signal.
Model: M/1 Low Voltage Holiday Detector
Stick Type Low Voltage, "Wet Sponge" Holiday Detector
New Updates Features
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Outputs: 9v, 67.5v, 90v 
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Power LED 
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Audible & Visual holiday detecting indicators 
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2 Resistance settings - 
80Ω for coatings on metal substrates 
- 
90Ω for coatings on concrete 
 
- 
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On-board calibration verification 
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3.5mm Headphone jack 
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Battery operated (9v) 
The Model M/1 kit includes:
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M/1 Instrument 
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25' Ground Cable 
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Water Wetter Wetting Solution, 4oz. 
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18" Extension Wand 
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16" w/Red Cable & New M/1 Cable Adapter 
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Electrode, Sponge, 6" x 3.5" x 2" 
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Yellow Sponge Holder 
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Sponge Holder Black Knob 
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Sponge Backing Plate 
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Battery, 9v (installed) 
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T&R Screw Driver 
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Canvas Carrying Bag 
- 
Instructions Manual 
- 
Certificate of Calibration 
Ease of use makes the M/1 the Professionals’ choice.
Unpacking M/1 Low Voltage Holiday Detector
Model: M/1 Low Voltage Holiday Detector
M/1 Kit Replacement Accessories:
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026-101 25' Ground Cable 
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049-014 Water Wetter Wetting Solution, 4oz. 
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028-086 Canvas Carrying Bag 
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177-070 18" Extension Wand 
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177-075 16" Wand w/Red Cable & New M/1 Cable Adapter 
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055-882 Electrode, Sponge, 6" x 3.5" x 2" 
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076-050 Yellow Sponge Holder 
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094-030 Sponge Holder Black Knob 
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014-195 Sponge Backing Plate 
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010-007 Battery, 9v 
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073-069 T&R Screw Driver 
Previous Version (Old Style Red/Black box) M/1 parts:
177-071 Wand with red cable
026-017 Ground Cable, 15', Black











