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Model 1111 Calibrator
Size 4.5 by 7.5 by 2.8 inches
Power 24Vdc @ 400mA (with supplied wall transformer).
Functions 6 selectable traffic pattern simulations:
1.  Counts: 3600 per hour
2.  Speeds: 10mph through 80mph
3.  Classes: 13 FHWA classes
4.  Speeds2:  28mph through 42mph
5.  2-way Speeds: 28 thru 42mph
6.  Gaps:  1 to 15 seconds
Outputs Two adjustable amplitude air pulses that simulate air hoses.  Air pulse amplitude adjusts from 0.5 to 1.5 kiloPascals.
Accuracy All timing is accurate to 0.01% (1 part per 10,000).
Other Calibrator is supplied with a carrying case, a wall transformer, two lengths of hose, and a manual.
All calibrator status information is presented on a high visibility two line display.
Features Use this unit to verify and certify all brands of air hose counters, speed analyzers and classifiers.
This unit can be used to test and certify air switches.
Simple to use:  Just turn the power on and the unit is running.  You can select patterns with a single push button.