ANSI N42.17A-1989 TEST RESULTS

MODEL 177-41 ALARM RATEMETER

TEST NOTES Test results are valid for instruments with serial number 91584 and greater. Test groups included five instrument sets. NT = Not Tested N/A = Not Applicable

GENERAL CHARACTERISTICS Characteristics Under Test Range of Values of Influence Quantities Limits of Variation Pass / Fail AC Power 102-132 VAC 178-238 VAC Reading cannot vary by more than plus or minus 5% N/A Battery Power 0 - 100 hours Reading cannot vary by more than plus or minus 10% Pass Battery Power Indicator Test performed at the voltage that triggers the battery failure indication Reading cannot vary by more than plus or minus 10% Pass AC powered instrument with battery backup Instrument must be marked for battery endpoint   Pass Test performed at the voltage that triggers the battery failure indication Readings cannot vary by more than plus or minus 10% Pass ELECTRONIC AND MECHANICAL TESTS Characteristics Under Test Range of Values of Influence Quantities Limits of Variation Pass / Fail Check Circuits Per manufacturer's recommendations     Alarms (reset) Dose rate to activate alarm See section 5.2.1 NT Alarms (delay) Dose rate to activate alarm Alarm must be indicated within 1 - 60 seconds NT Alarm (threshold drift) Dose rate to activate alarm Alarm setpoint must not drift more than plus or minus 10% over a 500 hour period NT Stability 3 hours (battery powered instruments) Reading cannot change by more than plus or minus 6% Pass Stability 24 hours (AC powered instruments) Reading cannot change by more than plus or minus 6% Pass 500 hours (AC powered instruments) Reading cannot change by more than plus or minus 15% Pass Geotropism Tested in three mutually perpendicular orientations Reading cannot vary by more than plus or minus 6% Pass Response Time See Table 1 of Standard See Table 1 of Standard Pass Coefficient of Variation Greater than or equal to 1 mR/h, 1 mrd/h, 10 mrem/h, 2000 dpm Reading cannot change by more than plus or minus 10% Pass Less than or equal to 1 mR/h, 1 mrd/h, 10 mrem/h, 2000 dpm Reading cannot change by more than plus or minus 15% Pass* Line Noise Susceptibility See table 2 of standard Reading cannot change by more than plus or minus 15% NT RADIATION RESPONSE Characteristics Under Test Range of Values of Influence Quantities Limits of Variation Pass / Fail Accuracy (photon dose rate) 0.1 mrd/h - 1000 rd/h Cannot vary by more than plus or minus 15% of conventionally true value NT Accuracy (count rate and contamination monitors) 50 dpm/square cm to 100,000 dpm/square cm Cannot vary by more than plus or minus 15% of conventionally true value NT Accuracy (beta or neutron dose rate) 0.1 mrem/h - 1000 rem/h Cannot vary by more than plus or minus 15% of conventionally true value NT Probe surface sensitivity Stated by manufacturer   NT Photon energy dependence 80 keV - 1.25 MeV See equation in section 6.3 of standard NT 20 keV - 3.0 MeV NT Beta Energy Dependence 0.5 MeV - 3.5 MeV (Emax) See equation in section 6.3 of standard NT 0.2 MeV - 3.5 MeV (Emax) NT Neutron Energy Dependence 0.025 eV - 14 MeV See equation in section 6.3 of standard N/A Photon Radiation Overload 100X upper limit less than or equal to 10 rd/h Correct response within 2 minutes NT 10X upper limit greater than 10 rd/h NT Angular Dependence 0 - 45 degrees (photon) Instrument reading must not vary by more than plus or minus 20% NT 45 - 90 degrees Instrument reading must not vary by more than plus or minus 50% NT 0 - 45 degrees (beta) NT INTERFERING RESPONSE Characteristics Under Test Range of Values of Influence Quantities Limits of Variation Pass / Fail Extracameral Response Range of instrument Reading cannot change by more than plus or minus 5% NT RF Fields Per user requirements Readings cannot change by more than plus or minus 15% NT 100 V/m, 0.3 - 35 MHz NT 100 V/m at approx. 140 MHz NT Microwave Fields Per user requirements NT 100 W/meter squared at 915 MHz, 2450 MHz NT Electric Fields 5000 V/m NT 100 V/m at 60 Hz, 400 Hz NT Magnetic Fields 800 A/m Pass Interfering Radiation See Table 3 of Standard   NT ENVIRONMENTAL FACTORS Characteristics Under Test Range of Values of Influence Quantities Limits of Variation Pass / Fail Temperature 0 - 40 degrees C Reading cannot vary by more than plus or minus 15% of reading at 22 degrees C Pass -10 - +50 degrees C Reading cannot vary by more than plus or minus 20% of reading at 22 degrees C Pass 10 - 35 degrees C Reading cannot vary by more than plus or minus 15% of reading at 22 degrees C Pass Temperature Shock From -10% - 22 degrees C Pass From 50 - 22 degrees C Pass Humidity 40 - 90% RH at 22 degrees C Readings cannot vary by more than plus or minus 15% of the reading at 40% RH Pass Mechanical Shock 50 g acceleration of 18 ms, half sine wave, test on 3 orthogonal axes (10 times) Reading cannot vary by more than plus or minus 15% NT Vibration 2 g acc., 10 - 33 Hz, test on 3 orthogonal axes for 15 min. NT Ambient Pressure 70 - 106 kPa Pass Splashproof 2 min. fine spray (4 L/min at 2 meters from nozzle) Pass *Due to the relationship of the response time and the coefficient of variation, readings on the lowest scale were taken using SLOW response time (manufacturer's suggestion).

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