ALPHA PARTICULATE AIR MONITOR

MODEL # FM-7MA2([fig] ([fig] FM-7MA2) FEATURES:



* RUGGED DIFFUSED JUNCTION DETECTOR

* QUICK CHANGE FILTER

* REAL TIME OPERATION

* PROVIDES LOCAL OR REMOTE SAMPLING

* RS-232 OUTPUT TO COMPUTER OR PRINTER
  
  

APPLICATION: The FM-7MA2 is an ideal instrument to assure
safety against airborne Alpha radiation,even in high or
varying background situations. With presettable alarm point
and built-in RS-232 output to computer or printer.The FM-7MA2
is designed for stand alone operation. The system provides
integrated exposure information and has pulse output available.
The FM-7MA2 is a complete system but may be expanded according
to the needs of the user utilizing the many modules of the
FM-7 series.

DESCRIPTION: The FM-7MA2 system utilizes a solid state detector
and two coordinated single channel analyzer windows. The
sample window (PHA allows the user to preset specific energy
level for sample (eg. Radium A peak), measuring Pu-239 or
other alpha emitters in the presence of significant or changing
Radon-Thoron background. The count rate is read on the front
panel digital display. These meters have a 6 digit display
for both rate and integrated information. The user can select
the operating modes: gross count, pulse height analyzing
(PHA), or PHA with background subtract (PHA-SUB). The high
level alarm trip point is settable over the entire range.
When activated, the system provides a flashing red beacon
and loud bell for visual and audible warning. An adjustable
alarm delay prevents short term transient alarms. The system
uses a quick change 47mm filter. The unit may be plumbed
to an air pump such as AP-2 or AP-4, hood exhaust or in-house
air system. Included with the FM-7MA2 are six feet of plastic
tubing, a box of 100 Millipore SM filters and complete users
manual.

ACCESSORIES AND OPTIONS AVAILABLE:

4-20 mA Process Loop Transmitter.
Remote Alarm
Remote Readout

T_{\textrm{A}}                                   TECHNICAL ASSOCIATES                                   
------------------------------------------------------------------------------------------
  7051 ETON AVENUE * CANOGA PARK, CA 91303 TELEPHONE (818) 883-7043 * FAX(818) 883-6103   


$Revision: 1.2 $

ALPHA PARTICULATE AIR MONITOR

MODEL # FM-7MA2

SPECIFICATIONS:

Detection: 1% of MPC of Pu-239 can be detected with average
Radon-Thoron background.

Counting Efficiency: 20 percent of 2 pi with wide
window setting and 47mm Pu-239 source in the filter holder.

Detector: Solid state detector, cleanable silicon diffused
junction with a 490 sq. mm area and a typical alpha resolution
of 60 KeV maximum.

Ranges: .0005 Bq with 1 hour time constant setting equivalent
to 7x10^{-7} Bq/m 3 at 70 liter/min air flow.

Response time: 1 sec. to 10,000 sec.

Modules and

Functions Include:   MFT-5A    Sample Detector                             
  MAC-5     Air Flow Control                            
  MAR-6     Alarm Relay and Acknowledge (bell disable)  
  MVR-5R    Power Supply                                
  SUB-5     Three level energy analyzer                 
  AIR-5B    Air Inlet-Outlet                            
  MPL-5     Process Loop Transmitter (optional)         
  FIL-7     Digital Process Readout with RS-232 Output  


Filters: Includes a package of100 Millipore SM 47mm filters.

Temperature Range: 20 to 130 degrees F. (7 to
54 degrees C.)
Total change in system gain is less than ± 5.

Finish: Baked enamel, easily cleaned.

Weight: 35 lbs.

Power: 115V, 60 Hz (230 Volts, 50 Hz optional.)

  CONTROLS, FRONT PANEL:                                            INDICATORS:                             
  Master power switch for all electronics.                          Alarm Beacon, rotating.                 
  Power On for pump power and running time register.                Alarm Bell, fast ringing.               
  Bias Voltage Adjust, 0-50 Volts.                                  6 digit LED.                            
  High Level alarm set pot.                                         High Level Alarm Lamp.                  
  Operate / Calibrate button.                                       Low Level, Loss of Signal Lamp.         
  Alarm Set button, displays alarm setting on meter.                Running Time Meter.                     
  Alarm Reset.                                                      Air Flow Rotameter.                     
  Bell Disable/Alarm Acknowledge switch                             "Power On" Pilot Light for electronics  
  Percent subtract pot.                                             "Power On" Light for pump power.        
  Threshold/Discriminator, ten turnpot with 1,000 division dial.    Bell Disable / Acknowledge Light.       
  Sample window (PHA) always constant above threshold, ten                                                  
  turn pot with 1,000 division dial.                                                                        
  Mode Switch - Gross Count, PHA, PHA-SUB.                                                                  


T_{\textrm{A}}                                   TECHNICAL ASSOCIATES                                   
------------------------------------------------------------------------------------------
  7051 ETON AVENUE * CANOGA PARK, CA 91303 TELEPHONE (818) 883-7043 * FAX(818) 883-6103   


$Revision: 1.2 $