MPM Products
  • Search
  • By Brand
    • 3M >
      • Circuit Plating Tape 1280
      • Lead Foil Tape
      • Leader Tape
      • Photographic Tape
    • Ansell >
      • Microflex Diamond Grip Gloves
      • Microflex Nitron One Gloves
    • Arrow-Tech >
      • Dosimeter W138
    • Carestream >
      • Carestream Chemistry
      • Carestream Film >
        • DR50
        • M100
        • MX125
        • T200
        • AA400
        • HS800
      • Carestream Imaging Plates
    • Cassia >
      • High Intensity LED Film Viewer (DL-1417)
    • Chemetall >
      • Magnetic Particle >
        • MT Consumables
    • Circle Systems
    • Comet >
      • iVARIO 160
      • iVARIO 225
      • iVARIO 320
    • Danatronics >
      • ECHO 7
      • ECHO 8
      • ECHO 9
      • ECHO FD
      • EHC-09 Color
    • Deb Group >
      • Deb-Stoko Estesol Classic Liquid Cleaner
      • Deb Kresto Hand Cleaner
    • Dimco-Gray >
      • Model 300 Timer
    • Eseco Speedmaster >
      • Speedmaster SM-12 Pocket Pal Densitometer
    • FujiFilm >
      • FujiFilm - Chemistry
      • FujiFilm - Film >
        • IX20
        • IX25
        • IX29
        • IX30
        • IX50
        • IX59
        • IX80
        • IX100
        • IX150
      • FujiFilm - CR Accessories >
        • ST-VI 100 Standard Res Imaging Plates
        • UR-1 50 Ultra-High Res Imaging Plates
    • Intertape >
      • Double Sided Flatback Tape
    • JEM Manufacturing >
      • JEM Gamma Radiation Exposure Calculator
    • Kowotest >
      • Kowotest Duplex Penetrameter
      • Type 1 14"x17" CR Phantom-D13
      • Type 1 14"x17" CR Phantom-D15
    • LCNDT >
      • FV-2009-T Plus
      • FV-2010
      • FV-2010-T Plus
      • FV-2014-IRIS
    • Magnaflux >
      • Liquid Penetrant Testing >
        • PT Consumables >
          • SK Kits
          • SKC-S
          • SKD-S2
          • SKL-4C
          • SKL-SP2
          • SKL-WP2
          • ZE-4E
          • ZL-15B
          • ZL-19
          • ZL-2C
          • ZL-27A
          • ZL-37
          • ZL-4C
          • ZL-56
          • ZL-60D
          • ZL-67
          • ZP-14A
          • ZP-4B
          • ZP-5B
          • ZP-9F
          • ZR-10E
        • PT Accessories >
          • PT Applicators
          • Test Pieces
        • PT Equipment >
          • Modular PT Equipment
          • ZA-1633
          • ZA-1227
      • Mag Particle Inspection >
        • MT Consumables >
          • 14A
          • 14AM
          • 20B
          • 14A Redi-Bath
          • 14A Aqua-Glo
          • MG-410
          • MG-450A
          • 7HF
          • 7C Black
          • #1 Gray
          • #8A Red
          • #2 Yellow
          • Carrier II
          • WCP-2
          • WA-2B
          • AX-52
          • ZAF-2
        • MT Accessories >
          • Cables & Connectors
          • Magnetic Coils
          • Contact Pads
          • Equipment Adapters
          • Prods & Clamps
          • Mag Kit
          • Field Indicators
          • Meters
          • Magnetic Particle Test Pieces
          • Centrifuge Tubes
          • Magnetic Particle Applicators
          • Yoke Accessories
        • MT Equipment >
          • Y-2
          • Y-7
          • Yoke Light
          • Yoke Test Weight
          • Y-8 MV Kit
          • A-Series
          • MD-Series
          • AD-Series
          • Database System
          • D-Series
          • Universal WE
          • CD-Series
          • M-Series
          • CMD-Series
          • P-Series
          • CSV-Series
          • Demagnetizers
          • XG-Series
          • Enclosures
      • UV Lamps >
        • ST700
        • EV6000
        • EV6500
        • EV6000 MG Kit
        • EV6000 ZP Kit
        • NDT Light Meters
        • UV Lamp Mounting Adapters
      • Ultrasonic Couplant >
        • Ultragel II
        • Sonotrace
        • Echogel
        • UT-X Powder
        • Soundsafe
      • Aqueous Cleaners
    • Monarch Products >
      • Visual Measuring Template
    • MPM Products >
      • Envelopes - 14.25" x 17.5" Open Ended 32# Kraft (Blank)
      • Envelopes - 14.25" x 17.5" Open Ended 32# Kraft (Printed)
      • Envelopes - 15" x 18" 32# Brown Kraft X-Ray Mailer w/Chipboard, String & Button Closure (Printed)
      • Envelopes - Open Ended 28# Brown Kraft (Blank) - Various
      • Envelopes - Open Ended 28# Brown Kraft (Printed) - Various
      • Film Developing Hangers
      • Gloves
    • Ray-Check
    • REL >
      • C4 Magnum
      • C4 Magnum-GO
      • C4 Nomad
      • C4 Nomad-GO
      • Liquid Nomad
      • Liquid Magnum
      • Profusion
      • Profusion XW
    • Roly International >
      • Electroclean EC-A(3)
      • Mold Release SMR-A2
      • Silicone Spray SS-A(3)
      • Skyblue SB-B Cleaner
      • Solventclean SC-A(4) Metal Degreaser
      • Spray Freeze SF-A(3)
      • Super Bee SB-210 Cleaner
    • S&S Technology >
      • Manual Identification Printer
    • SE International >
      • Pistol Style Dosimeter Charger
    • Sherwin
    • Shurtape >
      • CP 101 General Purpose Grade, Medium-High Adhesion Masking Tape
      • CP 106 General Purpose Grade, Medium-High Adhesion Masking Tape
      • CP 743 Specialty Grade, Photographic Black Masking Tape
      • DF65 General Purpose Grade Double-Coated Flat Paper Tape
    • Sonatest >
      • Masterscan 700m
      • Prisma
      • Single Element WheelProbe
      • Sitescan D-50
      • Sitescan 500S
      • veo+
      • WheelProbe 2
    • South Mfg >
      • Belting Cassette Materlal
      • Black Gaffers Tape
      • Developing Reel, Assembled - 70MM
      • Film Storage Box, 70mm - 100 Compartment
      • Film Storage Box, 100mm - 100 Compartment
      • Immersion Heater
      • Interleave Papers
      • Lead Numbers & Letters
      • Lead Number Cases
      • Mini Beam Collimator
      • Paddle Magnet for Film Cassettes
    • Spectroline >
      • Cellblaster UV Sanitizer
      • DeGerm-inator
      • EDGE
      • uVision
      • OPTI-LUX
      • OPTIMAX
      • EagleEye
      • MAXIMA
      • VIVID
      • AccuPRO
      • AccuMAX
    • Venture NDT >
      • Film Viewer 65-C1
      • Film Viewer 83-C1
      • Film Viewer 87-C1
      • Iris Diaphragm
    • Warren NDT >
      • Film Cassettes (Flexible)
      • Film Cassettes (Semi-Rigid)
      • Film Cassettes (Rigid)
      • Hexalon Flex Intensifying Screens
      • Hexalon Ultra Intensifying Screens
      • Select Intensifying Screens
    • Waygate Technologies >
      • Waygate/Agfa - Chemistry >
        • Devclean
        • Fixclean
        • G128 Developer
        • G135 Developer
        • G135 Starter
        • G335 Fixer
      • Waygate/Agfa - Film >
        • Structurix D2
        • Structurix D3
        • Structurix D4
        • Structurix D5
        • Structurix D7
        • Structurix D8N
      • Generators >
        • Seifert ISOVOLT Titan | neo
      • X-Ray Processors >
        • STRUCTURIX M ECO
        • STRUCTURIX Nova
        • STRUCTURIX S ECO
        • STRUCTURIX U
    • Wolf X-Ray >
      • Glass Floating Thermometer
    • Wypall >
      • Wypall Wipers L40
    • X-Rite >
      • Lamp Assembly - Model 301 Densitometer
      • 301 B/W Transmission Densitometer
      • 331C Transmission Densitometer
  • By Category
    • Magnetic Particle & Liquid Penetrant Inspection >
      • Fluorescent Mag Particle Testing Material
    • Radiography Testing Accessories >
      • Collimators
      • CR/DR QA Tools
      • Darkroom Accessories
      • Densitometers
      • Envelopes
      • Field - General Supplies
      • Film Cassettes
      • Film Storage
      • Film Viewers
      • Glass Floating Thermometers
      • Film Reading Gloves
      • ID Printer
      • Interleave Papers
      • Lead Figures
      • Lead Screens
      • Lights/Bulbs
      • Penetrameters
      • Radiation Safety
      • Signs
      • Tape
    • Computed Radiography Imaging Plates, Cassettes & Carriers >
      • Imaging Plates
    • Film, Chemistry, Film Processors & QA Tools >
      • X-Ray Film >
        • Agfa (Waygate Technologies)
        • Carestream
        • FujiFilm
      • Chemistry
      • X-Ray Film Processors
    • Conventional X-Ray, CR, DR, & CT Equipment >
      • Generators
    • Cleaning Agents & Supplies
  • Equipment Services
    • Preventative Maintenance
    • Emergency Services
    • Calibrations & Surveys
    • Installation
  • Calibration Lab
  • About Us
  • Resources
    • Material Certifications
    • MPM ISO 9001:2015 Registration
    • P&W Film Certifications >
      • P&W Film Certifications Archives
    • Processor User Manuals
    • Set Up an Account

Arrow-Tech​

Arrow-Tech > Dosimeter W138
Picture
Request More Info

Direct-Reading Dosimeter 0-200mR with Sapphire Window (W138)

The Direct-Reading Dosimeter is a pocket-size, carbon-fiber electroscope with an ion chamber for detecting and indication of integrated exposure to Gamma and X-Ray radiation. It has a thin wall which permits the penetration and detection of radiation.  This model comes with a hardened sapphire window that won't scratch even in the toughest of conditions.

Dosimeters are extremely sensitive instruments. Although they are constructed for rugged use, they should receive the same care as a wristwatch. Since dosimeters are hermetically sealed at the factory, they cannot be repaired or adjusted in the field. Therefore, if instrument malfunctioning is experienced, the instrument should be returned to MPM Products. Dosimeters may be maintained in operating condition simply by cleaning the eyepiece lens and the charging switch insulator with clean water and a cloth that is free of lint and grit. Make sure the charging switch insulator is absolutely free of lint and moisture at all times. Caution: Do not insert any sharp objects into, or tamper with parts in the charging switch recess. Irreparable damage may be done.

A yearly calibration of the Direct-Reading Dosimeter is generally consistent with good health physics practices. More frequent calibration may be necessary should the user's license require a shorter calibration interval.

Specifications:
Radiation Detected:  Gamma and X-Ray from 16 keV to 6 MeV
Range: 0-200mR 
Detector: Fiber-Electrometer mounted in an Electrically Conductive Plastic Ion Chamber
Detector Housing: Very low permeability plastics - Hermetically-Sealed
Accuracy: +/– 10% of true exposure
Rate Response: Dose rate independent for Gamma and X-Ray
Electrical Leakage: Less than 1.0% of full scale for 24 hours at 50 C
Temperature Range: -20 degrees C to +50 degrees C
Relative Humidity:  Up to 90%
Dimensions:  4.5” (12.4 cm) Length X .6“ (1.5 cm) Diameter
Weight:  1.0 oz. (25 grams)
Finish:  Natural Matte Gray with a Metal Clip
Warranty:  Two Year Limited Warranty
Shelf Life:  20 Years
Specifications: ANSI N13.5 and ANSI N322-1997

Support

Inquiries:  websales@mpmproducts.com
Service Requests:  service@mpmproducts.com
Submit Orders:  orders@mpmproducts.com
Calibration/Repairs:  repairs@mpmproducts.com
Phone:  800.429.0128
​Warehouse Locations
© COPYRIGHT 2018. ALL RIGHTS RESERVED.
  • Search
  • By Brand
    • 3M >
      • Circuit Plating Tape 1280
      • Lead Foil Tape
      • Leader Tape
      • Photographic Tape
    • Ansell >
      • Microflex Diamond Grip Gloves
      • Microflex Nitron One Gloves
    • Arrow-Tech >
      • Dosimeter W138
    • Carestream >
      • Carestream Chemistry
      • Carestream Film >
        • DR50
        • M100
        • MX125
        • T200
        • AA400
        • HS800
      • Carestream Imaging Plates
    • Cassia >
      • High Intensity LED Film Viewer (DL-1417)
    • Chemetall >
      • Magnetic Particle >
        • MT Consumables
    • Circle Systems
    • Comet >
      • iVARIO 160
      • iVARIO 225
      • iVARIO 320
    • Danatronics >
      • ECHO 7
      • ECHO 8
      • ECHO 9
      • ECHO FD
      • EHC-09 Color
    • Deb Group >
      • Deb-Stoko Estesol Classic Liquid Cleaner
      • Deb Kresto Hand Cleaner
    • Dimco-Gray >
      • Model 300 Timer
    • Eseco Speedmaster >
      • Speedmaster SM-12 Pocket Pal Densitometer
    • FujiFilm >
      • FujiFilm - Chemistry
      • FujiFilm - Film >
        • IX20
        • IX25
        • IX29
        • IX30
        • IX50
        • IX59
        • IX80
        • IX100
        • IX150
      • FujiFilm - CR Accessories >
        • ST-VI 100 Standard Res Imaging Plates
        • UR-1 50 Ultra-High Res Imaging Plates
    • Intertape >
      • Double Sided Flatback Tape
    • JEM Manufacturing >
      • JEM Gamma Radiation Exposure Calculator
    • Kowotest >
      • Kowotest Duplex Penetrameter
      • Type 1 14"x17" CR Phantom-D13
      • Type 1 14"x17" CR Phantom-D15
    • LCNDT >
      • FV-2009-T Plus
      • FV-2010
      • FV-2010-T Plus
      • FV-2014-IRIS
    • Magnaflux >
      • Liquid Penetrant Testing >
        • PT Consumables >
          • SK Kits
          • SKC-S
          • SKD-S2
          • SKL-4C
          • SKL-SP2
          • SKL-WP2
          • ZE-4E
          • ZL-15B
          • ZL-19
          • ZL-2C
          • ZL-27A
          • ZL-37
          • ZL-4C
          • ZL-56
          • ZL-60D
          • ZL-67
          • ZP-14A
          • ZP-4B
          • ZP-5B
          • ZP-9F
          • ZR-10E
        • PT Accessories >
          • PT Applicators
          • Test Pieces
        • PT Equipment >
          • Modular PT Equipment
          • ZA-1633
          • ZA-1227
      • Mag Particle Inspection >
        • MT Consumables >
          • 14A
          • 14AM
          • 20B
          • 14A Redi-Bath
          • 14A Aqua-Glo
          • MG-410
          • MG-450A
          • 7HF
          • 7C Black
          • #1 Gray
          • #8A Red
          • #2 Yellow
          • Carrier II
          • WCP-2
          • WA-2B
          • AX-52
          • ZAF-2
        • MT Accessories >
          • Cables & Connectors
          • Magnetic Coils
          • Contact Pads
          • Equipment Adapters
          • Prods & Clamps
          • Mag Kit
          • Field Indicators
          • Meters
          • Magnetic Particle Test Pieces
          • Centrifuge Tubes
          • Magnetic Particle Applicators
          • Yoke Accessories
        • MT Equipment >
          • Y-2
          • Y-7
          • Yoke Light
          • Yoke Test Weight
          • Y-8 MV Kit
          • A-Series
          • MD-Series
          • AD-Series
          • Database System
          • D-Series
          • Universal WE
          • CD-Series
          • M-Series
          • CMD-Series
          • P-Series
          • CSV-Series
          • Demagnetizers
          • XG-Series
          • Enclosures
      • UV Lamps >
        • ST700
        • EV6000
        • EV6500
        • EV6000 MG Kit
        • EV6000 ZP Kit
        • NDT Light Meters
        • UV Lamp Mounting Adapters
      • Ultrasonic Couplant >
        • Ultragel II
        • Sonotrace
        • Echogel
        • UT-X Powder
        • Soundsafe
      • Aqueous Cleaners
    • Monarch Products >
      • Visual Measuring Template
    • MPM Products >
      • Envelopes - 14.25" x 17.5" Open Ended 32# Kraft (Blank)
      • Envelopes - 14.25" x 17.5" Open Ended 32# Kraft (Printed)
      • Envelopes - 15" x 18" 32# Brown Kraft X-Ray Mailer w/Chipboard, String & Button Closure (Printed)
      • Envelopes - Open Ended 28# Brown Kraft (Blank) - Various
      • Envelopes - Open Ended 28# Brown Kraft (Printed) - Various
      • Film Developing Hangers
      • Gloves
    • Ray-Check
    • REL >
      • C4 Magnum
      • C4 Magnum-GO
      • C4 Nomad
      • C4 Nomad-GO
      • Liquid Nomad
      • Liquid Magnum
      • Profusion
      • Profusion XW
    • Roly International >
      • Electroclean EC-A(3)
      • Mold Release SMR-A2
      • Silicone Spray SS-A(3)
      • Skyblue SB-B Cleaner
      • Solventclean SC-A(4) Metal Degreaser
      • Spray Freeze SF-A(3)
      • Super Bee SB-210 Cleaner
    • S&S Technology >
      • Manual Identification Printer
    • SE International >
      • Pistol Style Dosimeter Charger
    • Sherwin
    • Shurtape >
      • CP 101 General Purpose Grade, Medium-High Adhesion Masking Tape
      • CP 106 General Purpose Grade, Medium-High Adhesion Masking Tape
      • CP 743 Specialty Grade, Photographic Black Masking Tape
      • DF65 General Purpose Grade Double-Coated Flat Paper Tape
    • Sonatest >
      • Masterscan 700m
      • Prisma
      • Single Element WheelProbe
      • Sitescan D-50
      • Sitescan 500S
      • veo+
      • WheelProbe 2
    • South Mfg >
      • Belting Cassette Materlal
      • Black Gaffers Tape
      • Developing Reel, Assembled - 70MM
      • Film Storage Box, 70mm - 100 Compartment
      • Film Storage Box, 100mm - 100 Compartment
      • Immersion Heater
      • Interleave Papers
      • Lead Numbers & Letters
      • Lead Number Cases
      • Mini Beam Collimator
      • Paddle Magnet for Film Cassettes
    • Spectroline >
      • Cellblaster UV Sanitizer
      • DeGerm-inator
      • EDGE
      • uVision
      • OPTI-LUX
      • OPTIMAX
      • EagleEye
      • MAXIMA
      • VIVID
      • AccuPRO
      • AccuMAX
    • Venture NDT >
      • Film Viewer 65-C1
      • Film Viewer 83-C1
      • Film Viewer 87-C1
      • Iris Diaphragm
    • Warren NDT >
      • Film Cassettes (Flexible)
      • Film Cassettes (Semi-Rigid)
      • Film Cassettes (Rigid)
      • Hexalon Flex Intensifying Screens
      • Hexalon Ultra Intensifying Screens
      • Select Intensifying Screens
    • Waygate Technologies >
      • Waygate/Agfa - Chemistry >
        • Devclean
        • Fixclean
        • G128 Developer
        • G135 Developer
        • G135 Starter
        • G335 Fixer
      • Waygate/Agfa - Film >
        • Structurix D2
        • Structurix D3
        • Structurix D4
        • Structurix D5
        • Structurix D7
        • Structurix D8N
      • Generators >
        • Seifert ISOVOLT Titan | neo
      • X-Ray Processors >
        • STRUCTURIX M ECO
        • STRUCTURIX Nova
        • STRUCTURIX S ECO
        • STRUCTURIX U
    • Wolf X-Ray >
      • Glass Floating Thermometer
    • Wypall >
      • Wypall Wipers L40
    • X-Rite >
      • Lamp Assembly - Model 301 Densitometer
      • 301 B/W Transmission Densitometer
      • 331C Transmission Densitometer
  • By Category
    • Magnetic Particle & Liquid Penetrant Inspection >
      • Fluorescent Mag Particle Testing Material
    • Radiography Testing Accessories >
      • Collimators
      • CR/DR QA Tools
      • Darkroom Accessories
      • Densitometers
      • Envelopes
      • Field - General Supplies
      • Film Cassettes
      • Film Storage
      • Film Viewers
      • Glass Floating Thermometers
      • Film Reading Gloves
      • ID Printer
      • Interleave Papers
      • Lead Figures
      • Lead Screens
      • Lights/Bulbs
      • Penetrameters
      • Radiation Safety
      • Signs
      • Tape
    • Computed Radiography Imaging Plates, Cassettes & Carriers >
      • Imaging Plates
    • Film, Chemistry, Film Processors & QA Tools >
      • X-Ray Film >
        • Agfa (Waygate Technologies)
        • Carestream
        • FujiFilm
      • Chemistry
      • X-Ray Film Processors
    • Conventional X-Ray, CR, DR, & CT Equipment >
      • Generators
    • Cleaning Agents & Supplies
  • Equipment Services
    • Preventative Maintenance
    • Emergency Services
    • Calibrations & Surveys
    • Installation
  • Calibration Lab
  • About Us
  • Resources
    • Material Certifications
    • MPM ISO 9001:2015 Registration
    • P&W Film Certifications >
      • P&W Film Certifications Archives
    • Processor User Manuals
    • Set Up an Account