Ludlum Measurements Frisker 3276 Series Manual
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Ludlum Measurements Frisker 3276 Series Manual

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Model 3276 Series Frisker/Area Monitor
Ludlum Measurements
February 2022
Serial Number: 25023213 and Succeeding
Firmware: n42.4810 and Higher

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Summary of Contents for Ludlum Measurements Frisker 3276 Series

  • Page 1 Model 3276 Series Frisker/Area Monitor Ludlum Measurements February 2022 Serial Number: 25023213 and Succeeding Firmware: n42.4810 and Higher...
  • Page 3 Model 3276 Series Frisker/Area Monitor Ludlum Measurements February 2022 Serial Number: 25023213 and Succeeding Firmware: n42.4810 and Higher...
  • Page 5 STATEMENT OF WARRANTY Ludlum Measurements, Inc. warrants the products covered in this manual to be free of de- fects due to workmanship, material, and design for a period of twelve months from the date of delivery. The calibration of a product is warranted to be within its specified accuracy lim- its at the time of shipment.

  • Page 17: Table Of Contents

    ONTENTS Contents List of Figures List of Tables 1 Introduction Various Configurations of the Model 3276 ..... . 10 2 Getting Started Unpacking and Repacking .
  • Page 18 AuxCom Setting - Mode ......68 B.4.2 AuxCom Setting - 375 Ethernet Mode Port ....68 Ludlum Measurements, Inc.

  • Page 19: List Of Figures

    IST OF IGURES Startup Display (All Segments Shown) ......14 Firmware Version Display ........14 Battery Voltage Display .

  • Page 21: List Of Tables

    IST OF ABLES Model 3276 Series Internal Detectors ......11 COUNT Mode Units and Result ......23 Setup Parameters .

  • Page 23: Introduction

    NTRODUCTION The Model 3276 is an ergonomic, versatile instrument that can be used for multiple radia- tion detection or measurement purposes. Its design allows it to be used as either a frisker or as an area monitor. It features the ability to measure radiation in count rate, exposure rate/dose, activity rate, integrated exposure/dose, time-averaged rates, and scaler counts.

  • Page 24: Various Configurations Of The Model 3276

    MODE to switch between available modes. Setup of the instrument is accomplished through the front-panel buttons, or through Lumic 2.0 software available from Ludlum Measurements. Front-panel setup can be disabled via the internal switch on the Model 3276 in order to pro- tect settings from inadvertent changes.

  • Page 25: Model 3276 Series Internal Detectors

    1.1. VARIOUS CONFIGURATIONS OF THE MODEL 3276 Model Operating Range Part # 0.010 Sv/h-500 Sv/h 3276/1 48-4169 (1.0 R/hr-50.0 mR/hr) 1.0 Sv/h-50 mSv/h 3276/2 48-4170 (0.10 mR/hr-5.00 R/hr) 10.0 Sv/h-500 mSv/h 3276/4 48-4171 (1.0 mR/hr-50 R/hr) 40.0 Sv/h-10.0 Sv/h 3276/6 48-4283 (4.0 mR/hr-999 R/hr) Table 1.1: Model 3276 Series Internal Detectors...

  • Page 27: Getting Started

    ETTING TARTED 2.1 Unpacking and Repacking Remove the calibration certificate and place it in a secure location. Remove the instrument and ensure that all of the items listed on the packing list are in the carton. Check individual item serial numbers and ensure calibration certificates match between instruments and de- tectors (if applicable).

  • Page 28: Instrument Operational Test

    Instead, use the following table to determine which main processor board is installed in the instrument: • 1 tick - 5498-770 • 2 ticks - 5519-785 The instrument then displays the battery voltage. Please see Figure below. Ludlum Measurements, Inc.

  • Page 29: Sigma Audio

    2.4. SIGMA AUDIO Figure 2.3: Battery Voltage Display The instrument will then move to normal operation, displaying the current rate for the Pri- mary units (factory default: mR/h). This boot-up process takes about 5 seconds, plus an- other 8 seconds if Sigma Audio is enabled. If the Sigma Audio option is selected, the unit will display a countdown from :08 to :01 (in seconds) as the unit measures background radiation levels.

  • Page 30: Detector Failure Diagnostics

    field, by a shorted cable, or by internal malfunction. If a Maximum Display parameter is set, then it is possible for the display to flash the Maximum Display value under this condition. Ludlum Measurements, Inc.

  • Page 31: Detector Overload

    2.6. INSTRUMENT USE AND CONTROLS Figure 2.5: Detector Over Range (Display Will Flash) 2.5.3 Detector Overload As another diagnostic test, the Model 3276 monitors the HV supply’s detector current. A cur- rent overload threshold can be set via Setup Mode or Lumic Software. (A setting of 0 disables this alarm.) In general, this alarm setting can be used to detect when there is some detec- tor failure, a cable failure, or a possible high level of radiation.

  • Page 32: On/Off Button

    – If COUNT mode is complete: It will reset the count mode and reinitialize the in- strument to begin the next count. Extra-Long Press (press and release after two beeps): • Currently has no effect. Ludlum Measurements, Inc.

  • Page 33: Units Button

    2.6. INSTRUMENT USE AND CONTROLS 2.6.2 UNITS Button: In default operation, the display shows the current exposure rate using the Primary units. A short press of the UNITS button (1 beep) will switch between Primary and Secondary units. Short Press (press and release before one beep): •...

  • Page 34: Mode Button

    The Reset feature must be enabled through Lumic 2.0 Calibra- tion software and will be disabled when Sigma Audio is enabled. A short press of the UNITS button will switch the displayed value between the Primary and Secondary Units. Ludlum Measurements, Inc.

  • Page 35: Max Mode Operation

    2.8. MAX MODE OPERATION A short press of the AUDIO button will toggle click audio between Off and On (Hi). When Sigma Audio is enabled, a short press of the AUDIO button will toggle the Sigma Audio vol- ume levels. If an alarm condition is present, a short press of the ON/OFF button will acknowledge and turn off the alarm audio.

  • Page 36: Count Mode Operation

    Sigma audio is completely disabled in Count Mode. Audio ‘clicks’ are disabled in COUNT mode by default but may be enabled thru software (see Lumic 2.0 software parameter Dev- Cnt-Audio Mode). Adjusting Dev Cnt Audio Mode will enable or disable the click audio dur- ing a COUNT. Ludlum Measurements, Inc.

  • Page 37: Count Mode Units And Result

    2.9. COUNT MODE OPERATION • Off - always off • On - always on • W/Count - audio is only enabled during an active count If a result in terms of activity is desired, the scaler count can also be in units of "d"...
  • Page 38 To clear the alarm condition and reset the Count Timer, a long press of the ON/OFF button is required. • If other operational modes are available, a short press of the MODE button will move to the next available operational mode. Ludlum Measurements, Inc.

  • Page 39: Count Mode Displaying Count Timer Of 5 Minutes, 30 Seconds

    2.9. COUNT MODE OPERATION Figure 2.9: COUNT Mode Displaying COUNT Timer of 5 Minutes, 30 Seconds February 2022...

  • Page 41: Specifications

    PECIFICATIONS Detector: Internal energy-compensated GM Energy Response: 60 keV to 3 MeV (±25%) Detector Range: • 3276/1 (48-4169) 0.010 to 500 Sv/h (1.0 to 50000 R/hr) • 3276/2 (48-4170) 0.001 to 50 mSv/h (0.1 to 5,000 mR/hr) • 3276/4 (48-4171) 0.01 to 500 mSv/h (1.0 to 50,000 mR/hr) •...
  • Page 42 Environmental Rating: NEMA (National Electrical Manufacturers Association) rating of 2 or IP (Ingress Protection) rating of 51 Size: 5.8 x 13.5 x 19.1 cm (2.3 x 5.3 x 7.5 in.) (H x W x L) Weight: 0.9 kg (2.0 lb) (excluding detectors and clips) Ludlum Measurements, Inc.

  • Page 43: Setup Mode

    4.1 Setup Overview Your instrument has been shipped from Ludlum Measurements only after passing electronic checkout, a 24-hour burn-in process, and a careful calibration process. Calibration papers are supplied with each instrument shipped from Ludlum Measurements.

  • Page 44: Setup Parameters

    2.00 kcpm Mode Alarm 1 Unit 2 - RATE/ MAX P3-4 5.00 kcpm Mode Alarm 2 Unit 2 - Count Units and P3-5 000 c Minimum Display Unit 2 - Count Units P3-6 000 c Alarm 1 Ludlum Measurements, Inc.

  • Page 45: Entering Setup Mode

    4.3. ENTERING SETUP MODE Setting Setup Parameter 3276/2 3276/3 3276/4 Unit 2 - Count Units P3-7 000 c Alarm 2 P4-1 Response Time P4-2 Response Rate P4-3 Enabled Modes Rate/Max/Count P4-4 Count Time P4-5 Auto Shutdown Time 0 hours (disabled) P4-6 Backlight Threshold P4-7...

  • Page 46: Setup Mode Operation

    Setup Page will be displayed using the graph where the number of segments indicates the number of parameters. Short press the MODE button to choose the Setup Page you are interested in. Once the desired Setup Page is shown, short press the UNIT button Ludlum Measurements, Inc.

  • Page 47: Setup Page Selection Display (Showing Page 4-Cal)

    4.4. SETUP MODE OPERATION to cycle down to the first parameter of that Setup Page. Further short presses on the MODE button will cycle down through the parameters for that page. Extra-long-pressing the UNIT button will go back up to the Setup Page. Extra-long pressing again will exit the Setup Mode. Figure 4.1: Setup Page Selection Display (showing page 4-CAL) To exit more quickly, press and hold the UNIT button.

  • Page 48: Model 3276 List Of Parameters (In Order)

    • Primary Units Maximum Display • Primary Units RATE/MAX Mode Alarm 1 • Primary Units RATE/MAX Mode Alarm 2 • Primary COUNT Units and Minimum Display • Primary COUNT Mode Alarm 1 • Primary COUNT Mode Alarm 2 Page 3 Ludlum Measurements, Inc.

  • Page 49: Setup

    4.6. SETUP PAGE 1 • Secondary Units and Minimum Display • Secondary Units Maximum Display • Secondary Units RATE/MAX Mode Alarm 1 • Secondary Units RATE/MAX Mode Alarm 2 • Secondary COUNT Units and Minimum Display • Secondary COUNT Mode Alarm 1 •...
  • Page 50 100 cm2. For example, using a detector with an area of 15 cm2, if we start with 10% efficiency to measure in dpm, then the parameter could be changed to 1.5% to measure in dpm/100 cm2. Ludlum Measurements, Inc.
  • Page 51 4.6. SETUP PAGE 1 Or likewise for Bq/cm2, efficiency could be calculated as: efficiency = count rate/disintegration rate*detector area (in cm2). For example, with the same detector as above with an area of 15 cm2, and starting with an efficiency value of 15%, then the parameter could be changed to 225% to measure in Bq/cm2.

  • Page 52: Setup

    • Range (k on/off for cpm, cps, dpm, Bq; , m or none for R/h and Sv/h) Primary Units RATE/MAX Mode Alarm 1 - A short press of ON/OFF to select the value to adjust, and MODE to adjust the value. Units will be the same as selected earlier with Primary Ludlum Measurements, Inc.
  • Page 53 4.7. SETUP PAGE 2 Units. The ALARM LCD Segment will flash to indicate Alarm 1. Set this Alarm to 000 to disable. Available values are: • Ones Place (0-9) • Tens Place (0-9) • Hundreds Place (0-9) • Number of Decimal Places (0, 1, or 2) •...

  • Page 54: Primary Unit Multipliers

    • Range (k on/off for cpm, cps, dpm, Bq; , m or none for R/h and Sv/h) If the Primary Count Units has changed to a value other than that used to pre- viously set this Alarm Point, the Alarm Point will be reset to 000. Ludlum Measurements, Inc.

  • Page 55: Setup

    4.8. SETUP PAGE 3 4.8 Setup Page 3 Secondary RATE/MAX Units and Minimum Display - A short press of the ON/OFF to select the value to adjust, and MODE to adjust the value. Available values are: • Number of Decimal Places (0, 1, or 2) •...

  • Page 56: Secondary Unit Multipliers

    MODE to adjust the value. Units will be the same as selected earlier with Secondary Count Units. The ALARM LCD Segment will flash to indicate Alarm 1. Set this Alarm to 000 to disable. Available values are: • Ones Place (0-9) • Tens Place (0-9) • Hundreds Place (0-9) Ludlum Measurements, Inc.

  • Page 57: Setup

    4.9. SETUP PAGE 4 • Number of Decimal Places (0, 1, or 2) • Range (k on/off for cpm, cps, dpm, Bq; , m or none for R/h and Sv/h) If the Secondary Count Units has changed to a value other than that used to previously set this Alarm Point, the Alarm Point will be reset to 000.

  • Page 58: Response Time Based On Count Rate

    Auto Shutdown Time (Default 0 - off ) - A short press of MODE to adjust the value. Available values are: • Ones Place (0-9) hours Backlight Threshold - A short press of MODE to adjust the value. Available values are: Ludlum Measurements, Inc.
  • Page 59 4.9. SETUP PAGE 4 • LO - Backlight comes on at a higher ambient light level. There are two different options for Backlight Threshold Low, which can be set through the software. Locate the parameters in the Dev tab. Enter the desired number into the "Value"...

  • Page 61: Software

    OFTWARE 5.1 Connecting to Software The Model 3276 software is sent with a standard two-meter cable. (A five-meter cable can be provided if requested. However, any cable longer than two meters may have issues with some USB hubs and computers, typically laptops.) To connect an instrument to the computer, please connect one end of the USB cable to the instrument first, and then the other end to the computer.

  • Page 63: Advanced Features

    DVANCED EATURES 6.1 Dead Time Correction All pulse counting detectors have a “dead time” in which the detector is unable to register another event. In relatively low fields this is not an issue. However, as the field strength approaches the high end of the detector’s range, dead time causes the pulse rate to become non-linear with respect to the real radiation field.

  • Page 64: R To Sv Conversion

    Firmware Version: This is a read-only presentation of the firmware version. With a firmware version of F.x.y.zzzz, the F.x.y will show up on the device screen during the power-on sequence and signifies the released version. Ludlum Measurements, Inc.

  • Page 65: Battery Life

    6.7. BATTERY LIFE Device – Model Name: This should match the model name on the front face of the instrument. Device – Serial Number: This should match the serial number of the instrument. Detector – Model: This can store the model of the detectors the instrument was cali- brated for.
  • Page 66 CHAPTER 6. ADVANCED FEATURES By default, CPS Offset is 0 and no count subtraction is performed. Ludlum Measurements, Inc.

  • Page 67: Safety Considerations

    AFETY ONSIDERATIONS 7.1 Environmental Conditions for Normal Use Indoor or outdoor use (While rain resistant, user is cautioned to avoid getting water through detector opening.) No maximum altitude Temperature range of -20 to 50 °C (-5 to 122 °F), may be certified for operation from -40 to 65 °C (-40 to 150 °F) Maximum relative humidity of less than 95% (non-condensing) Pollution Degree 3 (as defined by IEC 664): (Occurs when conductive pollution or dry...

  • Page 68: Cleaning And Maintenance Precautions

    Observe the following precautions when cleaning or performing maintenance on the instru- ment: • Turn the instrument OFF and remove the batteries. • Allow the instrument to sit for one minute before cleaning the exterior or accessing any internal components for maintenance. Ludlum Measurements, Inc.

  • Page 69: Revision History

    ISTORY This section of the manual will be updated with each revision of the Model 3276 in order to document changes over time. Ludlum Measurements’ policy is to provide free software upgrades to instruments for the life of the instrument.
  • Page 70 Appendix B: Auxiliary Communications. December 2021: Firmware updated to version n42 to address new board designs. Added explanation of feature to identify the board installed in the instrument. February 2022: Changed main board part number to newest version. Ludlum Measurements, Inc.

  • Page 71: Recycling

    To this end, Ludlum Measurements, Inc. strives to supply the consumer of its goods with information regarding reuse and recycling of the many different types of materials used in its products.

  • Page 73: Options

    It allows administrators to adjust device parameters. Headphone Option (part # 4498-555): This provides the Model 3000 series of instruments with a jack and circuitry required for a standard headphone plug. Ludlum Measurements also offers mono/stereo headphones with volume control.
  • Page 74 Because the Model 272D has a fixed unit display, the preferred unit of measure- ment for the display must be specified when ordering (ex: mR/hr, Sv/h). The Model 3276 minimum and maximum display parameters must also be set to preclude units other than those specified for the Model 272D. Ludlum Measurements, Inc.

  • Page 75: Standard Parts List

    TANDARD ARTS Part Description Part Number Model 3276 Digital Survey Meter 48-4160 Model 3276 Main Board 5519-785 Model 3276 Front Chassis Assembly 4498-546 Model 3276 Rear Chassis Assembly 4498-548 Main Keypad Membrane Switch 7498-547 Battery Holder Modified 7498-917 LCD 82 mm x 61.64 mm 7498-417 Table 11.1: Standard Parts List...

  • Page 77: A Model 3276 Variations

    3276 V ODEL ARIATIONS A.1 Model 3276 Hand & Foot Monitor A Model 3276 Hand & Foot configuration connects a Model 3276 to both a Model 44-25 hand monitor detector and a Model 44-26 foot monitor detector to monitor personnel for alpha, beta, and gamma contamination.

  • Page 78: Model 44-25 Specifications

    Efficiency (4 ): typically 5% for C; 22% for Y; 19% for Tc; 32% for P; 15% for Sensitivity: typically 9900 cpm per mR/hr Dead Time: 80 s Construction: aluminum housing with beige powder-coat finish; stainless steel protective screen Ludlum Measurements, Inc.

  • Page 79: Model 44-9 Frisker Detector

    A.2. MODEL 3276 WITH MODEL 44-9 WALL-MOUNTED FRISKER Temperature Range: -15 to 50 °C (5 to 122 °F); may be certified for -40 to 65 °C (-40 to 150 °F) Size: 24.7 x 17.8 x 22.9 cm (10.8 x 7 x 9 in.) (H x W x L) Weight: 2 kg (4.4 lb) A.1.5 Model 44-9 Frisker Detector The Model 44-9 GM detector detects alpha, beta, and gamma radiation.
  • Page 80 Lifting the detector from the cradle enables “click” audio. See specifications for the Model 44-9 in the text above. Figure A.2: Model 3276 With Wall Mount Frisker Ludlum Measurements, Inc.

  • Page 81: B Auxiliary Communications

    UXILIARY OMMUNICATIONS B.1 AuxCom Overview AuxCom, short for Auxiliary Communications, is a feature included on certain Ludlum in- struments. An AuxCom port allows the instrument to expand its capabilities with a variety of external devices through a standard serial interface. B.2 Requirements In order to take advantage of the AuxCom functionality, you will need the following: •...

  • Page 82: Settings

    B.4.2 AuxCom Setting - 375 Ethernet Mode Port If the instrument is equiped with the Model 3276 Ethernet Kit, this setting sets the unique Ethernet port identification. Valid values are from 50000 to 59999. Ludlum Measurements, Inc.

This manual is also suitable for:

3276/13276/23276/43276/63276 series

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