 |
|
|
|
| Fluke Biomedical Stock Number: 07-453 |
 |
TIMER, DIGITAL X-RAY PULSE COUNTER Measures timer accuracy of half-wave, full-wave and three-phase generators. Poor or inconsistent quality of x-ray images is often caused by inaccuracy or inconsistency of the generator's timer. This results in repeat examinations, which cost time and money. A poorly maintained system is also a hazard to the patient; when a malfunction in the timer occurs, the patient may receive unnecessary radiation doses. It is for important reasons such as these, that regular monitoring of x-ray systems and timers is an essential part of a good quality assurance program. The Digital X-ray Pulse Counter/Timer from Nuclear Associates is a noninvasive, solid-state instrument that can be used to measure the exposure time of either AC or DC x-rays. It can also measure the duration of radiation output produced by a wide variety of medical and dental x-ray systems. A sensitive x-ray detector in the instrument allows direct measurement of exposure from the x-ray head. Pulses produced by half-wave and full-wave x-rays, the Digital X-ray Pulse Counter/Timer measures the exposure time in milliseconds. When testing x-ray timers and controls, the time of relay contact closure can be measured using the AC input feature. An output connector on the side of the Digital X-ray Pulse Counter/Timer allows the user to view a radiation output waveform on an oscilloscope. Using this feature, technicians can diagnose and troubleshoot problems with x-ray generators. REMOTE SENSOR The optional Remote Sensor can be used when the user would like to have the unit in their hand, so that readings can be seen without having to walk back-an-forth from the x-ray table to the control room and after each exposure. The Remote Sensor can also be used when placement of the Digital X-ray Pulse Counter/Timer in the beam is questionable, such as in a Panorex dental x-ray unit. SPECIFICATIONS: Accuracy: AC Input: ± Count; DC Input: 2%, ± Count; X-ray Detection: ± 1 Count Sensitivity: AC Input: 65 VAC minimum; X-ray Input: 50 kVp, 5 mA at 5 cm from top surface of case, pointed to target on case Range: 9999 pulses; 9999 milliseconds Display: liquid crystal Power: 9-volt battery; alkaline or equivalent Battery Life: 24 hours continuous; typically 6 months of normal use AC Input Jacks: 130 volts AC maximum; 65 volts AC minimum; Input circuit not affected by reversed polarity. Controls/Indicators: Three-position switch: pulse, Off, Milliseconds; Four-digit liquid crystal display (0.5" character); Low battery indicator; "Low Batt" appears in display when battery voltage reaches 4.8 volts ± 0.5 volts: Power-on: LED (green); Oscilloscope output Connections: None required for direct exposure measurement Dimensions: 3.15" x 5.8" x 1.6" (80 mm x 147 mm x 40 mm) Weight: .5 lbs (.21 kg) \ |
 |
|
