GE

GE X-ray
Model: DXD 350-II

Specifications:

Environment

All ratings and duty cycles given apply at altitudes up to 8,000 feet (2438 m), average relative humidity not exceeding 95%, and maximum ambient temperature not exceeding 100 degrees Farenheit (38 degrees C).

Power Requirements

Power demand at maximum rating is 45 kVA at 95% power factor; maximum line current is 216 amperes at 208 V. Maximum ratings are obtainable with a line having 6% or less regulation.

Absolute limits of voltages are: 190 to 276 volts for 50 or 60 Hz.

Daily voltage variations must be within one of the following ranges:

190 to 223 VAC

212 to 245 VAC

227 to 260 VAC

243 to 276 VAC

Instantaneous voltage fluctuations caused by loads external to the DXD 350-II should not exceed 2-1/2 percent and should not occur more than 10 times per hour.

High Voltage Cable Length

Kilovoltage maximums and accuracy apply when high voltage cable lengths do not exceed 50 feet (15 m) and differences of length between tubes do not exceed 5 feet (1.5m). If it is necessary to exceed limits of cable length, the maximum KVP allowed may be less than 150. KVP reduction may be necessary to prevent exceeding 82 kVP from anode to ground or cathode to ground.

The maximum allowable kVP is determined by actual measurement after the installation is completed. If kVP must be reduced, no attempt should be made to operate the unit above that value.

Ratings versus line regulation

Line Regulation at rated output 150 KVp, 300 MA

0 - 6%

300 mA: 150

200 mA: 150

150 mA: 150

6.1 - 7.0%

300 mA: 140

200 mA: 150

150 mA: 150

7.1 - 7.5%

300 mA: 130

200 mA: 140

150 mA: 150

7.6 - 8.0%

300 mA: 130

200 mA: 140

150 mA: 140

Ratings versus Duty Cycle Radiography

The duty cycle of the DXD 350-II generatore is given in KVP is 150 unless the unit must be derated.

Maximum Duty Cycles, Radiographic, 150 kVP

300 MA

Maximum Cumulative Exposure Time: 6.75

Required Rest Time (sec.): 54

200 MA

Maximum Cumulative Exposure Time: 15

Required Rest Time (sec.): 45

150 MA

Maximum Cumulative Exposure Time: 27

Required Rest Time (sec.): 52

100 MA

Maximum Cumulative Exposure Time: 60

Required Rest Time (sec.): 60

50 MA

Maximum Cumulative Exposure Time: 240

Required Rest Time (sec.): 80

25 MA

Maximum Cumulative Exposure Time: 300

Required Rest Time (sec.): 30

Fluoroscopy

This x-ray unit is capable of operating at 130 kVP, 5 MA continously.

Rapid Film

Rapid Sequence Rates

Maximum Exposure Time (sec.) and Maximum Exposures per Seconds

60 Hz (1/60), 50 Hz (.02) - 12 Exposures

60 Hz (1/30), 50 Hz (.03) - 8 Exposures

60 Hz (1/15), 50 Hz (.06) - 6 Exposures

60 Hz (1/20), 50 Hz (.15) - 4 Exposures

60 Hz (2/5), 50 Hz (.40) - 2 Exposures

60 Hz (1/20), 50 Hz (.05) - 6 Exposures

60 Hz (1/15), 50 Hz (.06) - 4 Exposures

60 Hz (1/8), 50 Hz (.12) - 2 Exposures

Accuracy of Selected Values

Radiography or Spot Film

KVP, Radiography or Spot Film, 50 to 150 kVP, 25 to 300 mA: +/- 3% +1 KVP)

MA, 25 to 300, 50 to 150 kVP: 5% of selected MA

TIME, 60 Hz

1/120 to 1/8 sec.: 0 impulses

3/20 to 2/5 sec.: .0083 sec.



1/2 to 1 sec.: .017 sec.

1-1/4 to 5 sec.: , 2% of selected time


TIME, 50 Hz.

.01 to .4 sec.: .01 sec.

.5 to .8 sec.: .02 sec.

.9 to 5 sec.: 2% of selected time


Fluoroscopy

KVP, 65 to 130 kVP at 0-5MA: 5 KVP

MA, 0 to 1 MA at 65 to 130 KVP: .02 MA

MA, 1 to 5 MA at 65 to 130 KVP: 0.5 MA


TIME, 0-5 min.: 30 seconds of selected MINUTES except +0 seconds at 5 minutes.

Panel Meter 51M1

MA, 2 MA to 5 MA, 60 to 140 kVP: 10%

25 to 300 MA, 60 to 140 kVP: 5%

MAS, 5 to 50 MAS, max. time, 1/2 sec.: +/- 5%

Mammography

KVP at 300 MA, 25-50 KVP: +/- 3KVP

MA at 25-50 KVP, 300 MA: +/- 5% (with mammography x-ray tube)