897 Sound Dosimeter/SMS-2 Kit
Designed for conducting personal noise surveys, the897 Dosimeter is versatile enough for the experienced hygienist butsimple enough for the novice technician. The data storage featureallows you to view reports on the computer or print them for uselater during inspections. Purchase the 897 by itself or in theSMS-2 kit with all of the relevant accessories, includingcalibrator, nose cone, microphone clip, wind screen, and serial andparallel printer cables.

• Digital combination sound meter and dosimeterfor checking dB exposure
• Computes sound dosage and records up to 31 hoursof data at one-minute intervals
• Threshold level selectable from 50-99dB in 1dBincrements
• Security feature locks in operatingfunction

• The 897 Dosimeter Sound Measuring System... conducts personal noise surveys to meet IEC and OSHA requirements.Used as a sound level meter, the 897 provides a quick survey oftargeted areas and identifies suspect locations. The 897 is alsoideal for industrial and environmental sound level measurements andchecking noise areas for excessive dB exposure. Use the 897 to take measurements, or to view and print reportsusing a PC computer or printer. Reports are automatically printedon a compatible PC printer for later use during OSHA or other official inspections. Recordeddata can also be viewed on a personal computer monitor by using anaccessory cable and other manufacturer's software. The 897 computes dosage and records up to 31 hours, at one minuteintervals, of Lavg and Lmax readings and the number of detected 140dB peak occurrences perminute. ? Conforms to ANSI S1.4-1983, ANSI S1.25-1978, and IEC651-1979 Specifications ? Choice of exchange rates (3, 4, or 5 dB) and criterion levels(70, 80, 84, 85, or 90 dB) ? Selectable threshold Level from 50-99 dB in 1 dBIncrements ? Dual range (50-100 dB and 80-130 dB) ? Real Time Clock With rechargeable battery ? Security Lockout feature with Internal Data Storage ? Self-Test Modes test operational readiness Specifications GENERAL Power Requirements: Ni-Cad Rechargeable battery pack Warm-Up Time: 1 minute Dimensions: 6.8" (H) x 3.1" (W) x 1.1" (D), (172x80x28mm) Weight: 18 oz. (500g) including battery pack Case Construction: Anodized aluminum extrusion Security Feature: Locks-in operating function Real Time Clock: Clock continues running in all functions Performance Capability: Conforms to ANSI S1.4-1983 and IEC 651-1971 for sound level function and ANSI S1.25-1978 for dosimeter functionand ANSI S1.25-1978 for dosimeter function SOUND LEVEL MODE Ranges: 50 to 100dB, 80 to 130dB Accuracy: True RMS, Type S2 Dynamic Range: Selectable from 50 to 100dB and 80 to 130dB Frequency Response Weighting: "A" Weighting Response Time: Slow (1 second) Crest Factor: 10:1 at maximum indication Frequency Range: 20Hz to 8KHz DOSIMETER MODE Threshold Level: Selectable from 50-99dB in 1dB increments Criterion Level: Selectable, 70, 80, 84, 85 or 90dB Criterion Duration (TC): Eight (8) Hours Exchange Rate: Selectable 3, 4 or 5dB Maximum Indication: 999.9% DOSE Resolution: 0.1% DOSE to 999.9%

  Specifications (Continued)   Elapsed Time: Displays either Hours: Minutes or Minutes: Seconds, up to 99 Hours 59 Minutes, 59 Seconds. Timing Accuracy: 0.05% 140dB Peak: Displays number of 140dB peaks that have been detected MICROPHONE Type: 0.52" (13.2mm) Diameter Electret Condenser, Omnidirectional 70° angle of incidence. Maximum sound pressure level 148dB. DISPLAY Numerical: 4 Digit LCD Annunciators: Lo Batt, Spl Max, Int 60, % Dose, dBA, plus a colon and decimal point. ENVIRONMENTAL Operating Temperature: -10° to 50°C Temperature Coefficient: _0.05dBper °C (25° to 50°C) for reference measurement of 105dB at 1000Hz Relative Humidity: <0.5dB (0-95% RH) Storage Range: -30° to 45°C (without batteries) Magnetic Field Influence: No effect in field of 1 oersted (80A/m)