Model 870 mA/mAs Meter With exposure time measurement

Model 870 mA/mAs Meter With exposure time measurement

 

FEATURES

? Small hand held size

? Measure current from any x-ray

? Single phase

? Full wave

? Multiphase

? DC

? New High Accuracy Circuit

? Self-Resetting

? Battery Operated

? Two Year Warranty

? Built in measurement of battery

? Use for Medical or Dental X-rays

? Use for digital x-ray

? Displays mA, mAs and exposure time for each reading

? Easy to use

 

DESCRIPTION

? Measures tube current of x-ray generators.

? Calculates product of exposure time and mA for mAs.

? Connect two leads in series with tube current.

? Exposure time is measured in milliseconds.

? New improved circuit increases accuracy, reliability

? Provides automatic detection of AC / DC

? Eliminates need to reset.

? Stores and displays mA minimizing need for long x-ray exposure.

? Displays all information eliminating need for multiple exposures.

 

TYPICAL APPLICATIONS

? Check x-ray tube filament emission by measuring mAs value of exposure

? Check and adjust mA settings

? Verification of x-ray exposure time

? Calibration of x-ray timer

? Quality Assurance

? Measurement of exposure time

? Analyze x-ray malfunctions

 

SPECIFICATIONS FOR MODEL 870 mA / mAs METER

 

RANGE

?200 mA Full Scale

?0.1 mA Resolution (mA or mAs)

?10 Ohms Input impedance

?Measures 5 to 200 mA

?2A Full Scale

?1 mA Resolution (mA or mAs)

?1 Ohm Input impedance

?Meter automatically selects AC/DC

?Select range via On / Off Switch

 

mA / mAs ACCURACY

?1% +/- 2 mA on all ranges

 

CONNECTION

?Tip Jacks

?Test leads with two alligator clips

 

RECALIBRATION

?Annually

 

OPERATING CONDITIONS

?+10o to 40o C

?50o to 104o F

 

 

KVp / mAs Meter And  Exposure Time Meter

Model 820 / Low Range 820L

 

 

FEATURES

??Combines two instruments

??KVp and mAs in one package

??Easy to use

??No need to set for AC/DC

??mAs meter is self-resetting

??mA is stored permitting short exposures

??kVp is noninvasive

??AC or DC x-rays

??High accuracy

??Measures kVp, mA, mAS, exposure time

??Battery operated

??Two year warranty

??Custom carrying case option

??Solid state digital design

??Durable ABS plastic case

 

DESCRIPTION

??Use as mAs Meter or kVp Meter

??mA and mAs measure x-ray tube

current

??KVp measures the peak x-ray

accelerating voltage from tungsten xray

generators.

??Direct Measurement of peak kV from

the x-ray head, simply place 820(L) in

beam and take x-ray.

??Push Mode button to display Exposure

Time.

??Indicates x-ray waveform. type - e.g.

Half-wave, Full-wave or DC / 3 Phase.

??Optimized for Dental x-rays, also works

on radiographic and fluoroscopic xrays.

??Large display readable from outside

x-ray room.

??Alphanumeric display provides easy to

understand status and error messages.

??Plug in mAs cable to measure mA and

mAs.

??Remove mAs cable to measure kVp

 

TYPICAL APPLICATIONS

??Verification of peak x-ray voltage

??Constancy checks

??Calibration of x-ray

??Quality assurance

??Measurement of exposure time

??Half value layer determination

??Troubleshooting and repair of x-rays

??Maintain quality of x-ray

 

SPECIFICATIONS FOR 820/820L kVp

RANGE

820: 45 to 125Kv

820L: 40 to 115Kv

KVP ACCURACY

2% +/- 1 kV, at 25 to 100 mA (820)

or 10 to 50 mA (820L) both

18 to 42 cm from head, for Tungsten

target x-ray tube with 1.5 mm Aluminum

equivalent filtration.

EXPOSURE TIME ACCURACY

??1% +/- 2 millisecond (1/5 to 2 sec)

??Minimum exposure time is 100

millisecond

MINIMUM EXPOSURE TIME

??100 millisec -High Speed Mode

??200 millisec -High Resolution Mode

MINIMUM CURRENT (mA)

7 mA (820) or 5 mA (820L) at 50 kV,

10 cm from x-ray, depending on focus

 

SPECIFICATIONS FOR 820/820L mAs

RANGE

200 mA Full Scale

0.1 mA Resolution (mA or mAs)

10 Ohms Input impedance

2A Full Scale

1 mA Resolution (mA or mAs)

1 Ohm Input impedance

Meter automatically selects AC/DC

Set Range via pushbutton switch

mAs ACCURACY

2% +/- 1 mA on both ranges

CONNECTION

Via 1 meter cable with two alligator

clips

 

ORDERING INFORMATION

Model 820 X-ray kVp /mAs / Exposure Time

Meter

Model 820L Low Range X-ray kVp / mAs /

Exposure Time Meter

Please note that the Model 815 X-ray

kVp/Exposure Time Meter is still available.

 

GENERAL SPECIFICATIONS

DISPLAY

??0.4" (10.2mm) Liquid Crystal

??8 Character Alphanumeric

CONTROLS/INDICATORS

??ON/OFF Switch – Illuminated

push-button with green

power-on indication

??MODE Switch - momentary

push-button

??8 Character Liquid Crystal Display

??No connections needed for kVp

measurement

POWER

??4 AA batteries accessible from

bottom of case

??Low battery indicator

BATTERY LIFE

??48 hours continuous

??Typically 9 months of normal use

WARRANTY

2 years from ship date

PHYSICAL SIZE

150 X 120 X 58.5 mm

5.9 X 4.7 X 2.3 inches

WEIGHT

0.7 kg, (1.5 lb)

 

 

 

Contact We:

 

Huaruison Science and Technology Development Co., Ltd.

Address：No.16 guanghuaRoad,Tongzhou Development Zone Beijing 10100,P.R.China

Phone:0086-10-51266093，QQ:1275041125

Fax:0086-10-51266093

E-mail：huaruison@yahoo.com.hk

http://www.huaruison.com

http://www.eccxray.com/zhongkao.html

http://www.xraytest.cn