OPERATOR’S MANUAL
DMXA-Series and DMHA-Series
Digital Radiometers
®
Manual No. 84087-8
Printed in U.S.A.
Issued: July 2004
RecycledPaper
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GlobalTestSupply
.com
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Page 1: ...R S MANUAL DMXA Series and DMHA Series Digital Radiometers Manual No 84087 8 Printed in U S A Issued July 2004 Recycled Paper www GlobalTestSupply com Find Quality Products Online at sales GlobalTestSupply com ...
Page 2: ...troline radiometers are calibrated to NIST standards by pyro electric methods for maximum accuracy They are designed with a low electrical impedance making their linearity vastly superior to that of any other comparably priced radiometers The sensor heads are provided with a special diffuser sensor window that ensures accurate Lambertian or Cosine response The metering electronics of the DMXA Seri...
Page 3: ...rformance as soon as possible If damage is noted notify the carrier and supplier before using the instrument Also check that all items are included 2 1 2 Save the shipping carton and packing materials for future storing or shipping of the radiometer 2 2 POWER SOURCE REQUIREMENTS The radiometer is battery operated The batteries are factory installed in the instrument WARNING This radiometer is care...
Page 4: ...50 C 2 Sensor Spectral Ranges DM 254XA DM 254HA 230 280 nanometers nm DM 300XA DM 300HA 280 320 nanometers nm DM 365XA DM 365HA 320 400 nanometers nm DM 450XA DM 450HA 420 480 nanometers nm Temperature Coefficient 0 20 C 0 to 50 C 3 Power Requirements Battery Operation Four nonrechargeable AA size alkaline battery cells are included as standard Four rechargeable AA size nicad battery cells and a b...
Page 5: ... once pressure is released 2 Numerical Display The digital display uses LEDs and includes a 1 digit and 7 segment type 0 9 digits The last digit is permanently set at 0 Over range or out of range condition is indicated by a blank display except for the most significant 1 3 Retractable Cord This coil cord connects the sensor to the readout unit 4 Charger Jack Use only with rechargeable battery cell...
Page 6: ...the sensor will be displayed in microwatts per square centimeter DMXA Series or milliwatts per square centimeter DMHA Series f Return the power switch to the OFF position and remove the sensor from the light source NOTES The least significant digits of the measured irradiance may change as the display is being observed The amount of variance will depend on the stability of the light source with th...
Page 7: ...LL SYSTEM The basic block diagram for the radiometer is shown in Figure 5 1 Figure 5 1 Basic System Block Diagram 5 1 1 THE INPUT OPTICS The Lambertian Cosine response of the sensor head is desirable for many measurement applications especially those where the angle from the source to the detector is variable or those situations where OPTICAL STACK DETECTOR CURRENT TO VOLTAGE CONVERSION LSI ANALOG...
Page 8: ...t or photo current will divide between the diode parallel dynamic resis tance and the parallel load resistance The dynamic resistance is normally a high value and is an inverse exponential function of for ward voltage The direction of current flow will produce a voltage across the diode that opposes the band gap potential of the pho todiode junction thus forward biasing it As a result the value of...
Page 9: ...ers is provided on the Certificate of Limited Warranty enclosed sep arately with each unit NOTE For assistance of any kind contact the Customer Service Department at Spectronics Corporation In the U S and Canada call toll free 1 800 274 8888 Give full details of the difficulty and include the model and serial numbers of the unit and the date of purchase If return of the radiometer to the factory i...
Page 10: ...e Spectroline DM 15C0001 bivoltage AC recharger must be used Use of any other charger may damage the meter Refer to the markings on the DM 15C0001 for power source requirements Battery cells should be replaced as follows a Lift out the battery holder from the radiometer and remove the holder from the battery connector b Take out the old cells from the holder c Insert four new cells ensuring that t...
Page 11: ...lls are charged for at least 15 minutes before operating the radiometer 6 8 PREVENTIVE MAINTENANCE 6 8 1 Daily Care a Immediately clean all spilled materials from the radiometer and wipe dry If necessary moisten a cloth with soap and water to clean plastic surfaces and the sensor head The sensor surface should be rinsed with ethanol to remove any residual soap and or organic contaminants b Wheneve...
Page 12: ... Procedure listed in paragraph 4 2 b Check that the irradiance intensity range being measured is with in the rating of the unit c Be sure that the batteries are properly installed refer to paragraph 6 5 and that they are charged d Ensure that the environment in which the radiometer is being used is within the unit specifications e Inspect the sensor head and readout unit for visible damage If any ...
Page 13: ...g good contact Refer to 6 5 If good contact is made check the voltage If symptom persists replace batteries 2 No numerical display a Batteries not installed a Remove battery cover to ascertain whether batteries are present b Batteries installed incorrectly b Remove batteries and check that polarity is correct c Batteries not making contact c Ensure that good contact is made Check voltage If sympto...
Page 14: ...rt No BATTERY Alkaline AA Size 1 5 Volt Commercial Four Required BATTERY Nicad Rechargeable AA Size DM N4 1 25 Volt Four Required BATTERY RECHARGER Bivoltage DM 15C0001 115V 60Hz 230V 50Hz CARRYING CASE DR 75 www GlobalTestSupply com Find Quality Products Online at sales GlobalTestSupply com ...
