Thermo Scientific Aerosol Monitor FHT 58 S Technical Specification ZT-221E

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1 Thermo Scientific Aerosol Monitor FHT 58 S Technical Specification ZT-221E Thermo Fisher Scientific Messtechnik GmbH Frauenauracher Straße Erlangen Germany info.rmp.erlangen@thermofisher.com fax

2 2009 Thermo Fisher Scientific Inc. All rights reserved. All trademarks are property of Thermo Fisher Scientific Inc. and its subsidiaries unless mentioned otherwise. Thermo Fisher Scientific Inc. provides this document to its customers with a product purchase to use in the product operation. This document is copyright protected and any reproduction of the whole or any part of this document is strictly prohibited, except with the written authorization of Thermo Fisher Scientific Inc. The contents of this document are subject to change without notice. All technical information in this document is for reference purposes only. System configurations and specifications in this document supersede all previous information received by the purchaser. Thermo Fisher Scientific Inc. makes no representations that this document is complete, accurate or errorfree and assumes no responsibility and will not be liable for any errors, omissions, damage or loss that might result from any use of this document, even if the information in the document is followed properly. This document is not part of any sales contract between Thermo Fisher Scientific Inc. and a purchaser. This document shall in no way govern or modify any Terms and Conditions of Sale, which Terms and Conditions of Sale shall govern all conflicting information between the two documents. Revisions Rev. Rev.-Date resp. Dept. Name Rev.-page Cat.* Explanation RM & SI-SP Engelhardt First Edition * Category C: editorial correction I: clearing improvement A: substantial amendment Explanations must be given at least with category A.

3 Chapter 1 System overview The Aerosol Monitor 58 S can be used for various applications in the field of air contamination monitoring as well as for immission and emission measurements. With these applications the alpha and beta activity accumulated since the first measurement and the present activity concentration can be measured and monitored. The generally predominant natural radioactivity in air (radon progeny) is compensated using a compensation algorithm based on the alpha-beta ratio method and allow a discrimination between natural and artificial beta aerosols. The device can be operated by a touch panel. Thermo Scientific Technical Specification ZT-221E 1

4 Chapter 2 Functional Description Measuring Principle The sample air is passed through a 58mm glass fiber filter accumulating the aerosols in air. The filter is manually exchanged. The sampled alpha and beta aerosol activity is detected by a sealed proportional counter. The alpha and beta pulses are discriminated by two appropriately set thresholds. Measured Values Alpha and Beta activity in units of Bq (= time integral of the activity concentration), moving ratemeter calculation every second with a selectable time constant t 1 Alpha and Beta activity concentration in units of Bq/m 3, moving ratemeter calculation every second with selectable time constant t 2 Measuring Range Bq/m 3 related to 60 minutes sampling time Minimum Detectable Activity Concentration (MDAC) The minimum detectable artificial beta activity, activity concentration is provided according to DIN T1 for an error of the first and second kind of 5% and at a constant dose rate level of 100 nsv/h, 10 Bq/m 3 radon: < 5 Bq with a ratemeter time constant 1 = 300 s < 2 Bq/m 3 with ratemeter time constant 1 = 1800 s 2 ZT-221E Technical Specification Thermo Scientific

5 Block Diagram Thermo Scientific Technical Specification ZT-221E 3

6 Chapter 3 Hardware Key Components 19" rack A 19" rack, 32 HE is used for the installation of the components mentioned in the subsequent paragraphs. The cabinet fitted with: a terminal block with potential-free relay contacts (change-overrelays, max. load of relays: 230 V/6 A) alarm activity alarm concentration air flow min. air flow max. status ok detector fail rate analog output concentration X X X X X X 0,4-20 ma Operation Hours Meter The monitor is fitted with a non-resettable operating hours meter for the pump allowing to keep track of maintenance intervals. Mains switch with fuse Pump switch with fuse Mains cord, 6m Pump Rotary vane vacuum pump, optional: low noise gas ring vacuum pump with micromaster (variable frequency converter for 3 phase AC drives), oil-free, air-cooled Filter Drawer Filter drawer contains a 58mm glass fiber filter. Lead bricks are inserted into the front and the side parts of the filter drawer to reduce the influence of external radiation fields. The sample air passes through an in-let flange at the rear of the filter drawer. Then, the sample air flows through the aerosol filter whereby the aerosol is deposited and accumulated on the filter. Having left the filter, the sample air is let out again. 4 ZT-221E Technical Specification Thermo Scientific

7 Detector Sealed end window proportional counter tube mounted on the filter drawer. Shielding Omni directional lead shielding made of ring elements above the filter drawer with top lid. The complete shielding is fixed by means of two threaded rods and a clamp (2 hexagon cap nuts). Pre-amp 1 counter for gross beta count rate (threshold 1) 1 counter for gross alpha count rate (thrshold 2) Evaluation and Display Unit Windows based Panel PC with Touchscreen support USB port Ethernet port USB stick Data evaluation software, pre-installed Air Flow Rate Meter With automatic shut down of the pump upon exceeding the adjusted range of the pressure drop across the filter. Differential Pressure Sensor Pressure gauge to control the maximum allowed underpressure against the detector window due to, e.g. a blocked air inlet. Upon exceeding the maximum underpressure, the pump is shut down in order to prevent a damage of the detector window. The signalisation is triggered via the air flow measurement. Reset button in the front panel to restart the pump after trouble shooting. Alarm Signal Unit (option) A remote signal unit consisting of 3 optical and 1 acoustical elements. Thermo Scientific Technical Specification ZT-221E 5

Chapter 4 Software Windows-based touch screen operated GUI for the sampling of measurement values from the pre-amp display and storage of measurement values for activity, concentration and high

8 Chapter 4 Software Windows-based touch screen operated GUI for the sampling of measurement values from the pre-amp display and storage of measurement values for activity, concentration and high energetic nuisance radiation configuration of the monitor administration of data history execution of service tasks A windows based touch screen operated GUI for sampling of measurement values from the preamplifier display and storage of measurement values for - activity - concentration configuration of the monitor administration of data history recurrent calibration check RCC execution of service tasks Main Screen 6 ZT-221E Technical Specification Thermo Scientific

9 Measurement screen Thermo Scientific Technical Specification ZT-221E 7

10 Chapter 5 Technical Data Radiological Parameter Min. Typ. Max. Unit Condition/Note Measuring Range Bq/m 3 Minimum Detectable Activity (acc. to DIN T1) 5 Bq 1 = 300 s amb. DR level approx. 100nSv/h Minimum Detectable Activity Concentration (acc. to DIN T1) 2 Bq/m 3 2 = 1800 s amb. DR level approx. 100nSv/h Efficiency 241 Am 2.5 % Alpha Channel 5.0 % Beta Channel 90 Sr < 0.01 % Alpha Channel 12 % Beta Channel Background 0.05 cps Alpha Channel at 100nSv/h 0.5 cps Beta Channel Environmental Conditions Parameter Min. Typ. Max. Unit Condition / Note Amb. Temperature operating C storage Sampled Air Intake Temperature C Barometric pressure hpa Rel. Humidity of Sampled Air at Intake % R.H. non-condensing 8 ZT-221E Technical Specification Thermo Scientific

11 Electrical Connection Parameter Min. Typ. Max. Unit Condition / Note Mains Voltage 230 V AC, single phase Mains Frequency Hz Power consumption 1600 VA Mains fuse 4 A slow Pump fuse 4 A slow Mains chord 6 m Dimensions and Weight Parameter Min. Typ. Max. Unit Condition / Note Heigth 1600 mm without packing Width 600 mm without packing Depth 800 mm 32HU, without packing Weight 170 kg net, without packing Detector Parameter Min. Typ. Max. Unit Condition / Note Sealed proprtional counter tube Diameter area densitiy counting gas 1.8 LND ArCO2 2.2 mm mg/cm 2 Operating Voltage 1550 V Shielding 30 mm lead, all directions Detector Assembly Diameter Height 100 / mm incl. shielding Filter Drawer and Filter Cartridge Parameter Min. Typ. Max. Unit Condition / Note Air Intake Flange DN 16 KF Air Intake Filter Diameter 50 mm grade H12 Filter activity load 10 6 Bq Pump Thermo Scientific Technical Specification ZT-221E 9

12 Parameter Min. Typ. Max. Unit Condition / Note Air Flow Rate 5 m 3 / h Supply Voltage 230 V AC, single phase Supply Frequency Hz Power Consumption 250 VA Protection Class IP54 Noise Level 68 db at 1m distance Maintenance Interval 6 month Digital Outputs Function Signal horn Malfunction Alarm 1 (pre-alarm) Alarm 2 (main alarm) Measurement in progress1 Output OUT0 OUT1 OUT2 OUT3 OUT4 Digital Inputs Function Push button Ack alarm Signal Air flow ok Input IN1 IN3 10 ZT-221E Technical Specification Thermo Scientific

13 Chapter 6 Consumables Item Aerosol Filter GF6 (100 ea) Carbon Vanes (1 set) Reference number KT KT Chapter 7 Reference Sources 60 mm, active area 50 mm, max. height 1.5 mm Ref. no. SM Ref. no. SM Reference Source 241 Am, Bq Reference Source 90 Sr, 200Bq Chapter 8 Documentation included 1 ea. Combined Hardware-Software Manual 1 ea. bootable USB-Stick with Program, Configuration Utility and System Backup Thermo Scientific Technical Specification ZT-221E 11

ß-Aerosolmonitor FHT 59 C

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