Fluke ASM-990 User Manual

ASM-990 Series

Advanced Survey Meter

Operators Manual

Fluke Biomedical

Radiation Management Services

6045 Cochran Road Cleveland, Ohio 44139

440.498.2564

www.flukebiomedical.com/rms

Table of Contents

Section 1: General Information................................................................................... 1-1

1.1 Product Specification ................................................................................... 1-1

1.2 Warning Labels............................................................................................ 1-3

Section 2

2.1 Membrane Switch/Front Panel Overview..................................................... 2-1

2.2 Basic Operation ........................................................................................... 2-2

2.3 Operating Modes ....................................................................................... 2-12

2.4 Data Logging ............................................................................................. 2-13

2.5 Messages Display...................................................................................... 2-15

2.6 Probe Selection ......................................................................................... 2-15

2.7 Keypad Lock Feature................................................................................. 2-16

2.8 Data Transfer/Upload................................................................................. 2-16

Section 3: Calibration .................................................................................................. 3-1

3.1 Calibration.................................................................................................... 3-1

Section 4: Maintenance ............................................................................................... 4-1

4.1 Introduction .................................................................................................. 4-1

4.2 Routine Cleaning ......................................................................................... 4-1

4.3 Storage ........................................................................................................ 4-1

4.4 Battery Replacement ................................................................................... 4-2

4.5 Replacement Parts Information ................................................................... 4-3

4.6 Recalibration and Service Information ......................................................... 4-3

Appendix A: ASM-992, ASM-993 Directional Dependence........................................... A-1

A.1 ASM-992, ASM-993 Polar Response for Internal 1R Energy Compensated

Appendix B: ASM-992, ASM-993 Energy Dependence ................................................. B-1

B.1 ASM-992, ASM-993 Energy Dependence ...................................................B-1

B.2 ASM-993 Energy Dependence, Internal Pancake GM Detector .................. B-2

Appendix C: ASM-992, ASM-993 Internal Energy Compensated 1R GM Tube ...........C-1

C.1 Location Diagram – Internal Energy Compensated 1R GM Tube................C-1

: Operation.................................................................................................... 2-1

GM Tube...................................................................................................... A-1

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General Information

Product Specification

Section 1

General Information

1.1 Product Specification

Intended Use

The ASM-990 series are used to monitor and measure radiation levels in both industrial and medical applications.

Product Description

The ASM-990 is a portable, battery operated general-purpose survey meter for use with all Victoreen Geiger-Mueller (GM) and scintillation probes, proportional counting probes and neutron probes. The ASM-992 is identical to the ASM-990 with the addition of a second, internal GM tube and supporting circuitry. The ASM-993 contains both an internal GM tube, as well as an internal pancake probe.

Advanced features available in the ASM-990 series are:

a. A built in real time clock / calendar will provide a time and date stamp for all logged data. b. Optional barcode scanner adds barcode information to logged data. c. An internal GM tube allows this instrument to meet the requirement of a unit capable of measuring

up to 1R/hr (ASM-992 and ASM-993).

d. Scaler mode with several functions/features e. Graphical LCD (Liquid Crystal Display) w/160 x 160 resolution and EL (electro luminescent)

backlight.

f. IrDA (Infrared) data port g. Audio indicator w/adjustable volume level, and enable/disable feature h. Membrane switch panel overlay with 8 keys i. High voltage supply (adjustable from 250 VDC to 1300 VDC)

Windows based software, to supports the advanced features of this instrument, are also provided.

Physical Properties and Characteristics

a. Dimensions: 10.79 in. L x 4.12 in. W x 2.5 in. H b. Weight:

ASM-990, ASM-992 ASM-993

2.1 lb. 2.4 lb.

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ASM-990 Series

Operators Manual

Environmental

a. Operating environment: -10 degrees C to +50 degrees C; 20% to 95% humidity, up to 2000 meters

altitude

b. Storage environment: -25 degrees C to +65 degrees C c. Temperature – The unit is designed to operate satisfactorily in a range of -10 degrees C to +50

degrees C. Measurements logged at ambient temperature (+22 degrees C) will not vary more than +/- 15% from those taken at the extremes. (Refer to ANSI N42.17A, paragraph 8.1.1.)

d. Temperature Shock – Measurements logged at temperatures of –10 degrees C or +50 degrees C

will not vary more than +/- 15% when the unit is taken from either of those temperature extremes to a nominal +22 degrees C in less than five minutes. (Refer to ANSI N42.17A, paragraph 8.2.1.)

e. Humidity – Per ANSI N42.17A, paragraph 8.3.1, the mean instrument response will not vary more

than +/- 15% over the non-condensing relative humidity (RH) range of 40-95% and a nominal temperature of 22 degrees C from the mean instrument response at 40% RH and a nominal temperature (+22 degrees C).

f. Mechanical Shock – The unit can withstand a shock test in accordance with CEI/IEC International

Standard 61010-1. The measurements taken before and after the mechanical shocks will not be in variance by more than +/- 15%.

g. Splashproof – The unit is designed to withstand a fine water spray for a period of two minutes, at 4

L/m, with the spray nozzle located approximately 2m from the unit. Readings shall not vary by more than +/- 15% from the mean of a set of reference readings after it is subjected to the spray. (Refer to ANSI N42.17A, paragraph 8.7.1 and 8.7.2.)

Power Requirements

The ASM-990 series operates on two “D” size batteries, internally connected in a series array to create a +3 VDC power level to the unit. Recommended battery types are nickel metal hydride (NiMH) rechargeable, or alkaline. Readings taken with fresh batteries will be within 10% of those taken with used batteries, provided the voltage level from the battery array remains at a minimum of +2.0 VDC.

Electrical Specifications for Probe/Sensor Port

Voltage Level (output): 450 VDC to 1250 VDC

Max. Current: 50 μA

Regulation: +/- 10% of initial setting

1-2

1.2 Warning Labels

General Information

Warning Labels

WARNING

CAUTION

ADVERTENCIA

CUIDADO

AVERTISSEME NT

CAUTION

WARNUNG

ACHTUNG

Un-insulated high voltage present

Do not touch connector while power is on

Voltaje peligroso: riesgo de chaque electrico

No tocar conectador mientras este encendido

Non isole’ haute tension

Ne pas toucher cable coaxial quand en marche

Uninsulierte Hochspannung vorhanden

Den Hochspannungsstecker nicht berühren, wenn das Gerät eingeschalten ist

警告

注意

高電圧が露出しています。

電源が入っているときにはコネクタに触れないで下さい

1-3

ASM-990 Series

Operators Manual

NOTE

If this device is used in a manner not specified by Fluke Biomedical, the protection by the device may be impaired.

CAUTION

There are no user serviceable parts for this unit. Should unit require service, please contact Fluke Biomedical at 440.248.9300.

1-4

Operation

Membrane Switch/Front Panel Overview

Section 2

Operation

2.1 Membrane Switch/Front Panel Overview

Figure 2-1 illustrates the membrane keypad of the ASM-990 series. The function of each key is summarized below:

a. The “ON/OFF” key is used to apply power to, or remove power from, the unit. If the unit is off when

this key is pressed, then the unit will turn on. The LCD will then display an introductory screen, consisting of the company name, logo, and address. This screen/message will remain for a period of five seconds. It then will revert to the operating mode (refer to Figure 2-2). If the unit’s power is already on when this key is pressed, then the unit will turn off (i.e. no characters will be displayed on the LCD).

b. The “AUDIO” key is used to enable/disable the audible alarm/speaker. An icon, resembling a small

speaker, will appear in the lower left corner of the LCD if this feature has been selected/enabled.

c. Depressing the “LIGHT” key will illuminate the LCD’s backlight for a time period, user menu

selected, from 5 seconds to 255 seconds. Conversely, if the backlight is already on, then pressing this key will turn it off.

d. Pressing the “START/STOP/RST/SAVE” key will cause the unit to begin logging all subsequent

readings to internal memory (if it had previously been in the “STOP” mode). Otherwise, if the unit had previously been in the “START” mode, it will cause the unit to cease logging readings; however, the unit will continue to make, and display, measurements. This action will also reset the internal counter. The “SAVE” key/function is used to manually log the current reading. It can also be used to read the physical location, for each measurement, in barcode format (if the unit is equipped with the barcode option).

e. The “SEL” key, when pressed, will activate the menu system. Refer to the section entitled “BASIC

OPERATION” for the correct sequence of events for each menu select item.

f. Depressing the “ESC” key will return the user to the normal operating screen. This key will only be

active after the “SEL” key has been pressed, and a menu item is currently being displayed.

g. The “UP” and “DOWN” arrow keys are used to scroll through various functions within a particular

menu.

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ASM-990 Series

Operators Manual

2.2 Basic Operation

Figure 2-1. Membrane Keypad

a. When power is initially applied, by pressing the “ON/OFF” switch, a screen displaying “Victoreen

Advanced Survey Meter” will appear. It will remain for approximately five seconds.

b. After the five-second interval is over, the unit will display information regarding the previously

selected probe (see Figure 2-2). A prompt will then appear asking the operator to choose to continue with the current probe selection, or to make another selection. If the operator decides to make another selection, then the screen will display a list of probes that are currently available for usage with that particular instrument (see Figure 2-3). Once a probe is selected, the normal operating screen will be displayed (see Figure 2-4). The screen includes a “RULER” bar graph, scale multiplier, measurement reading, data unit, and real-time clock. The data unit and mode of operation are based on the user’s previous selections.

c. When the “SEL” key is pressed, from the normal operating screen, the instrument will then display

the main menu screen (see Figure 2-5).

d. From the main menu screen the user can select one of the following sub-menus: “SWITCH TO

INTG(RATE)”, “MODES”, “SETUP,” or “IRDA COMMUNICATION”. The user can then change the operation setting from these sub-menus. The “SWITCH TO INTG(RATE)” selection allows for a convenient way to alternate operation between Rate and Integrate modes.

e. If a setting has been changed, depressing the “SEL” key will save it to permanent storage

(EEPROM memory). The instrument will then display the normal operating screen.

f. Pressing the “ESC” key will cause the unit to ignore the current setting, and then display the normal

operating screen.

2-2

Basic Operation

Figure 2-2. Probe Information Figure 2-3. Probe Selection

PROBE INFO MODEL #: 489-50

SERIAL #: 002132 CAL DATE: 09/06/02 CAL CYCLE: 12 mos. CAL DUE: 09/06/03 IS PROBE CORRECT? YES NO

PROBE SELECTION PROBE #1

PROBE #2 PROBE #3 “ “ PROBE #N NOT LISTED

Operation

Figure 2-4. Normal Operating Screen (Rate Mode)

Main Menu

Changing to the main menu screen (see Figure 2-5) can be accomplished by pressing the “SEL” key while the normal operating screen is displayed.

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