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Ludlum Measurements 2350 Manual

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Ludlum Model 2350
DATA LOGGER
Revised: July 1993
Serial No. 106622 and Succeeding
Serial Numbers
Software Version # 37102n16
LUDLUM MEASUREMENB,
INC.

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Summary of Contents for Ludlum Measurements 2350

  • Page 1 Ludlum Model 2350 DATA LOGGER Revised: July 1993 Serial No. 106622 and Succeeding Serial Numbers Software Version # 37102n16 LUDLUM MEASUREMENB, INC.
  • Page 2 7 1 . 1 uR/hr 6 0 SEC 1 5 . 3 UR 2 1 8 M I N D O S 18: 44 WAND MODEL 2350 AUDIO 1oo DATA LOGGER DIVIDE VOLUME SERIAL I/O...
  • Page 3 Should the instrument be received in a damaged condition, save the shipping container and the packing material and request an immediate inspection by the carrier. If equipment needs to be returned to Ludlum Measurements, Inc. for repair or calibration, please send to the address below. All shipments should include documentation containing return shipping address, customer name, telephone number, description of service requested, and all other necessary information.

  • Page 4: Table Of Contents

    1. GENERAL ........... . 2.
  • Page 5 ..........10.1 Recyclemade 10.2 Dead time calibration .
  • Page 6 1. GENmAJJ The M2350 provides a click per event The Ludlum Model 2350 Data Logger is audio output with a programmable AUDIO a self contained counting instrument designed for operation with scintillation, proportional, DIVIDE selector switch to increase its usefulness with sensitive detectors. There is or G-M detectors.
  • Page 7 dependiig upon use of EL backlight. volts is considered the end point of the battery life. When the batteries reach this point’ there FINISH Computer beige polyurethane is about two to four hours use left. enamel with black silk-screened nomenclature. SIZE 1 lcm (4.25”) W x 22cm (8.75”) L x 15~x11 (6”) H (21~x1 (8.25”)H with handle).
  • Page 8 programmable up to 2500 volts in one-volt increments. clock that keeps the time (24hour format) and date. USER ID: A fifteen-character identifi- function allows the detector settings to include cation code that can be used to identity each the model number of the detector. The model can be up to nine characters long and can instrument.
  • Page 9 high enough for 75% dead time conection, the code the user enters. It can be up to ten digital ratemeter will display the message of numbers and letters. The location code ‘OVER RANGE!’ does not need to be unique for each readiig since the sample number is unique.
  • Page 10 Performing a ‘kold statt” To install the batteries,unscrewthebattery door latch and insert four “D” cell batteries in the battery compartment. The correct position of the batteries is marked on the bat&y door. NOTE Refasten battery door. A cold start wil clear all detectors and also clear the logging memory.
  • Page 11 6. DESCFUPIlm OFDISPLAY MODES There are seven different display modes. displayed here. The ‘SCL’ message is always on and indicates that this is the scaler timer. When the scaler is not counting the time 6.1 Nomal display displayed is the count time for the scaler. If the scaler is counting, the time displayed is The normal display mode displays all four the time remaining until the count is done.

  • Page 12: Normal Display

    Lines Line MODEL number is dis- same as in the normal display played on this 10 SEC sa line. (section 6.1) 0 W= OFF 0 w= OFF 10 T= 100 Line (USER ID) The detector high Line The lefi part of voltage and Gin- Rgure 4, dow are displayed I%EUE&XS DI@~~Y.
  • Page 13 Line Line The type of data This line shows logged is dis- that the alarm set- RAT LOOOe+09 p l a y e d h e r e tings are being 999999 (ratemeter, scaler, DOS l.OOOe+09 displayed. integrated Line T h e d i g i t a l Line 5: figune that W~~Di@aY.
  • Page 14 6.7 Recycle setup display Lines same as in the ‘The recycle setup display mode displays normal display 10 SEC SCL CYC 1 OF 1 ROOO (section 6.1). This consists of the number of cycles enabled, 60 SEC DELAY the detector each cycle will use, the delay Line time before the data is logged, the logging This line displays...
  • Page 15 are integer values; f is a single precision floating point numb, and a,b are alphanu- optical wand or the serial I/O. All commands meric string. With the alphanumeric string, the to control the M2350 can be executed by following charactw are valid for use with the either the wand or the serial I/O.
  • Page 16 7.1 !ktconlnmKk This type of command will send data to the M2350 which allows a setting in the SET FUNC’IION COMMAND VALID CHARACTERS Calibration constant Clock date (1 I m I 12) month (1 Sd 531) day Clock time Cycle count (1 I w 5 6) cycle number (0 I y 265535) seconds delay Cycles per recycle...
  • Page 17 7.2 Contml commands This type of command may or may not require data with it and will cause the M2350 to do something. COMMAND Analog recorder mode 0 5 decade log 1 1OOk cps 111 scale 2 1Ok cps 111 scale 3 lkcpsfblhcale 4 1OOcpsfbllscale 5 10 Ml scale...

  • Page 18: Detectordisplay

    0 slow response 1 fast response Recall detector settings Reset alarms Select display mode 0 Normal display 1 Parameters display Detector display Alarm display 4 Logged data display 5 Recycle data display Recycle setup display S M X Select display multiplier 0 Autorange 1 Micro none...

  • Page 19: Readcommands

    7.3 Read commands ‘These commands will cause the desired COMMAND RESPONSE & VALID CHARACTERS x=3: lk cps Bar graph ratemeter Baud rate x==l: 4800 baud baud baud calibration constant Clock date Clock time (1 SwW6)cyclenumber Cycle counf recycle Cycles per Detector dead time page 14...
  • Page 20 Detector model Detector Serial number Dump logging memory a=I.D number (up to 15 char) s-sample number code (up to 10 sample logged number mode FM2350 status when data The ‘$’ character signifies that a logging location% data has been sent. The variable string except for ‘a’...
  • Page 21 High voltage Integrated dose Integrated dose alarm Integrated do& her (min) Overload (tenths of @)R%y y=o: overload disabled Ratemeter alarm Read display multiplier x=3: none Read display units x=3: (Sv) x=6: (D)isintegAtions time page 16...
  • Page 22 scaler alarm Scaler count time (se@ Xer count time Threshold User I.D. number y=l: window on 8 bit number defjned as follows Bit 0: n&meter alarm Bit 1: scaler alaxm Bit 2: integrated dose alarm Bit 3: scaler overflow Bit 4.: integrated dose overflow Bit 5: low battery Bit 6: ovenrange...

  • Page 23: Scanthrou~Thedisplaymodes

    READ FUNCTION COMMAND VALID CHARACTERS 8. tXMMANDUSAGE The M2350 allow the user to specific operating needs. The following the M2350 for particular customize examples show how to use the M2350 applications. This is done by issuing a series to configure and use the Ivl2350. of commands to the M2350 to set it up for the The examples are set up to list the function desired, the actual M2350 command, and the...

  • Page 24: Setvariousdetectorsettings

    now look like Figure 6. The M2350 display should Select the logged data display SW4 now look like Figure 7 or mode. Figure 8. The M2350 display should Select the recycle data display now look like Figure 9. mode. The M2350 display should Select the recycle setup display now look like Figure 10.
  • Page 25 Data Logger Set the serial number to 1223. The serial number should now display 1223. svD3 Select the alarm display mode. The M2350 display should now look like Figure 6. The ratemeter alarm should Set the ratemeter alarm to Jle4 now be 1.OOOetO4.

  • Page 26: General M2350 Setup

    will now send Read the window setting. The window should now be Turn the window OK Off. will now send Read the window setting. serial port. set, the user identification number will be pro- The following examples show how to set up and use the M2350 in various situations.
  • Page 27 0 Scaler count time = 30 seconds 0 Display units = counts PRO73738 Display time base = minutes 0 Display range multiplier = auto o Detector dead time = 2OpS o Detector calibration cunstant RESPONSE The M2350 display should Select the parameters display SVDl now look like Fig&...
  • Page 28 Off. Save the settings as detector 1. saved as detector #l. SVDO Select the normal display mode. now look like Figure 3. Load detector #l settings. included to show how to recall the settings of detector #l. The setup of the M2350 for the count rate dose.
  • Page 29 Data Logger 0 Detector model = LMI 44-2 0 Detector serial number = seconds PRO73738 0 Ratemeter alarm setting = le9 0 scalerdarmsetting=999999 o Display range multiplier = auto o Detector dead time = 20~s = le9 = 1.16elO COMMAND Select the parameters display The M2350 display should now look like Figure 4.
  • Page 30 Save the settings as detector 2. The settings have now been S P 2 saved as detector #2. Select the normal display mode. The M2350 display should now look like Figure 3. ‘This step is not needed, but is Load detector #2 settings. included to show how to recall the settings of detector #2.
  • Page 31 FUNCTION COMMAND RESPONSE Set the readout range multiplier S M O The range multiplier should to auto. now read 0. Set the detector dead time to SLIe-4 The dead time should now read 1.m04. Set the calibration constant to SC7.64e7 The calibration constant should read 764e7.
  • Page 32 0 Connect the LMI 44-38. o Clear the integrated dose. Move to the north side of the room. the 1st reading (OUTSIDE NJ room. the 1st reading (INSIDE N). mom. Enter the location code for room. the 2nd reading (OUTSIDE E). 0 Enter the location code for the 2nd reading (INSIDE E).
  • Page 33 Clear the logging memory to SSC allow for new data. be cleared and the sample number should be 0. Connect the LMI 44-2 and then clear the integrated dose. integrated dose timer should he 0. RESPONSE The location code should Move to the north side of the change to OUTSIDE N.
  • Page 34 COMMAND M2350 RESPONSE Now set the location code to IBUTIDCB The location code should indicate the outside integrated change to OUT DOS. dose. The intqpted dose will now sample counter increments to FUNCTION COMMAND RESF’ONSE Select the detector display mode. The M2350 display should now look like Figure 5.
  • Page 35 COMMAND M2350 FUNCTION RESPONSE The ratemeter reading is saved reading to stabilize, log the as sample 7 and the sample Move to the west wall of the The location code should room and enter the location code. change to INSIDE W. as sample 8 to stabilize, log the and the sample...
  • Page 36 Detector #: 02 Type of reading. SCALER Count time: 30 seconds Date: lU14/90 User I.D.: UN123456 Select the sample to view. The following data is displayed, Location code: OUTSIDE S Type of reading SCALER Logged cxmtlt: 1.387oo0&3 time: 30 Count seconds Date: lU14l90 User I.D.: UN123456...
  • Page 37 COMMAND M2350 RESPONSE FUNCTION The following data is Select the sample to view. displayed Detector #: 03 o f r e a d i n g : RATEMETER Logged cza.lnt: 1.7831548-03 Count time: Time: 1552 Date: 12/14&O User I.D.: UN123456 The following data is Select the sample to view.
  • Page 38 The Ii42350 has three special operating To use the recycle mode, the recycle setup modes. The first mode is the recycle mode. must be done first. This is described below. The other two modes are calibration routines. The recycle mode allows the M2350 to be set Figure 10.
  • Page 39 FUNCTION COMMAND M2350 RESPONSE Enter the data to set up count 1 show the entered data. for detector #l, a delay of 10 seconds and then log the scaler count. The display for count 2 should Enterthedatatosetupcount2 show the entered data. for detector #l, a delay of 60 seconds and then log the ratemeter reading...
  • Page 40 10.2 Dead time calibration for the various samples and the status messages. Figure 11 shows the display when this routine is first entered. The meaning of The dead time calibration routine is used the lines are described below. to calculate the dead time of the M2350 and the detector.
  • Page 41 is complete, Ibe top line of the display will The following example shows the read ‘SAMPLE 2’. command seouen~~ to use this routine. The when the last count is complet- have ban determined and entered along with ed, the M2350 the count time and other detector information.
  • Page 42 COMMAND M2350 FUNCTION RESPONSE the count saved as sample 1+2 count and the display will then ask for SAMPLE 2. disturbing SOURCE 2, This command will start the remove SOURCE 1 and then start count cycle. At the end of the the count.
  • Page 43 updated. At the The use of the calibration constant routine end of the count is explained below. This will show the dis- time, the count ’ plays and describe the functions. The calibra- 30 SECONDS time lines will be tion constant display is only displayed when COUNTING cleared and the L CAL 2.000e-03...
  • Page 44 FUNCTION RESPONSE Select the calibration constant The M2350 now displays the calibration constant calculate calculate routine. display, saves the currenf dead time, and sets the dead time to the low sample point. This will en@ the low sample Enter the low sample point. point.
  • Page 45 parameters have been set, press the F5 key to The M2350 can be controlled through the store the new parameters in the terminal. serial I/O. One method of doing this is by These settings are retained even when the using a hand held terminal. This section power is turned off and the terminal is describes the set up of the &mitral and then its operation.
  • Page 46 can be controlled through the the scan is not too slow and that the scanning WAND input. The use of the optical wand remains uniform while scanning the bar and the bar code format are described below. codes. The shorter bar codes are generally easier to pmctice the scanningprocedurewith because the shorter length will usually allow To use the wand, connect it to the M2350.
  • Page 47 Part No. Model 2350 Data Qg,ger Completely Assembled Model 48-2058 UNIT 2350 Data Logger Assembled Central Procesmr 5371-001 BOARD 04-5533 04-5614 Cl01 Cl09 04-5576 Cl10 Cl11 04-5633 05-5763 05-5820 05-5820 4174 lNTlERAm- 06-6244 06-6254 u121 06-6093 page 42...
  • Page 48 06-6264 U123 CDM6264 06-6098 U124 06-6236 U125 LM331 06-6156 U126 06-6248 U128 CR1 12 07-6261 CR1 130CR115 CR162 R130 R131 09-6823 R132 lo-7012 R133 470k lo-7026 R134 220k lo-7066 R135 lo-7042 lo-7016 12-7540 12-7557 R143 12-7620 R144 lo-7028 R 1 4 8 12-7640 R149 12-7623...
  • Page 49 RIBBON-POST STRIP 40P 13-8007 Assembled Amp/P.S. Board 5371-002 BOARD 04-5522 Cl-C3 04-5521 04-5518 04-5522 04-5532 04-5527 04-5533 04-5576 04-5533 04-5522 04-5616 04-5521 04-5579 04-5639 04-5522 M-5532 04-5523 04-5616 04-5575 04-5519 04-5592 04-5616 page 44...
  • Page 50 MPS6534 05-5763 05-5765 05-5778 06-6252 CA3096 06-6023 06-6265 06-6251 06-6253 06-6251 LM385Z2.5 05-5791 07-6266 07-6306 CR1 l-CR12 07-6306 07-6272 07-6266 07-6272 12-7748 47 OHlq 1/3w, 5% 12-7756 12-7789 4.7 MEG lo-7030 12-7686 12-7757 09-6828 12-7747 12-7748 09-6823 12-7750 12-7757 12-7748 page 45...
  • Page 51 12-7755 12-7748 0.1 ohm, 3w, 1% 12-7647 12-7762 1 MEG, 1/3W, 1% 12-7763 10 MEG, 1/3w, 5% 12-7749 12-7748 12-7762 12-7790 1 MEG, 1/3w, 1% 12-7763 12-7793 12-7758 100 om 1/3w, 5% 12-7746 12-7792 12-7748 820 OHM, 1/3W, 1% 12-7791 12-7764 lo-7028 12-7747...
  • Page 52 4275-037 4275-089 CLOVERLEAF RECEP- 18-8771 TACLES-01 l-6809-000 18-8992 JACK SCREW 3/16 4750-l 18-9019 BOARD Assembled Backplane Board 5371-003 07-6272 076306 lo-7009 13-8181 CONN-l-102866-0 13-8368 13-8057 CONN-1-640456-O MTAlOO 13-8073 13-8039 13-8095 BOARD 5371-005 04-5576 04-5592 page 47...
  • Page 53 . l.IbiNsIsm 05-5755 06-6188 06-6278 DIODE3 07-6261 . mIsmRs lo-7001 33 OHM R 1 6 m-7015 m-7013 lo-7046 10 OHM 12-7777 R N 3 3 ‘ 4275-090 01-5212 6.144 MHZ 13-8147 13-8168 coNw64o457-o 13-8198 13-8089 page48...
  • Page 54 AUDIO UNIMORPH 60690 21-9251 13-8025 13-8041 CONN-l-640442-0 MTAlOO 13-8136 13-8202 CONN-l-640442-0 MTAlOO 13-8136 13-8170 MTAlOO 13-8184 MTAlOO 13-8171 13-775 1 CONN-AUDIO 61HA5F 13-8385 13-8025 KNOB 50-lWD-1G 08-6612 TOGGLE MTA 206 PA 08-6657 21-9313 IL3YImmm 09-6756 KNOB-SO-1-1G lk t lo-7009 4371-029 M2221 BATTERY HARNESS 8261-089 8371-019...
  • Page 55 page 50...
  • Page 56 DRAWINGS AND DIAGRAMS Central Processor Board Component Layout, Drawing No. 371 x 27 Amplifier/Power Supply Ebard, Drawing No. 371 x 2 Supply Board Component Layout, Drawing No. 371 x 24 Backplane Board Component Layout, Drawing 371 x 29...

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