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        | Wide range of versions for applications in intelligent process control and monitoring systems,as well as in production and test lab. |  | AMiR 7838 Infrared Measuring Heads in Two-Wire Design 
Type
 
   
    |  | Technical Features:
 ¡Ü Compact, 
      robust and precise infrared measuring heads.
 ¡Ü 
      Wide range of versions for applications in 
      intelligent process control and monitoring systems, as well as in production 
      and test lab.
 ¡Ü 
       Low cost standard version with fixed set temperature and output current 
      range and emissivity can be manually set at the measuring head.
 ¡Ü 
      The standard version without programming 
      functions is ideally suitable for connecting to ALMEMO¢ç devices.
 ¡Ü 
      Measuring heads also available as addressable 
      and remotely programmable versions.
 |   
    | 
 
         
          | Technical Data: |   
          | Accuracy: | ¡¾1% of meas. value or ¡¾1.4¡ÆC, the higher 
            value of either is always valid |   
          | Reproducibility: | ¡¾0.5% of meas. value or ¡¾0.7¡ÆC, the higher value 
            of either is always valid |   
          | Response time: | 165ms, at 7838 - 51(P) 100ms |   
          | Nominal temperature: | +23¡ÆC, ¡¾5¡ÆC |   
          | Temperature resolution: | AMiR 7838 -10, -11: 0.125¡ÆC, AMiR 7838 -21, -31, 
            -41, -51: 1¡ÆC |   
          | Relative humidity: | 10 to 95%, non-condensing, at 30¡ÆC max. |   
          | Power supply: | 12-24VDC, for AMiR 7838xxP: 24VDC |   
          | Output signal: | 4 ¡¦ 20mA linear, two-wire technology |   
          | Emissivity: | 0.10 to 1.00 manually adjustable at measuring head 
            (only noprogrammable heads) |   
          | Operating temperature: | without cooling: 0 to 70¡ÆC, with air cooling: 0 to 
            120¡ÆC with water cooling: 0 to 175¡ÆC, with protective housing: 0 to 315¡ÆC
 |   
          | Protection system: | IP 65, (IEC 529) |   
          | Shock: | IEC 68-2-27 (MIL STD 810D), 50G, each axis, 11ms |   
          | Vibration: | IEC 68-2-6 (MIL STD 810D), 3G, each axis, 11 to 200Hz |   
          | Dimensions: | without water cooling housing: 187mm long, ¨ª 42mm with water cooling housing: 187mm long, ¨ª 60mm
 |   
          | Weight: | without water cooling housing: 330 g with water cooling housing: 595 g
 |  
 
         
          | Device Functions: |   
          | only AMiR 7838-xxP (programmable 
            AMiR Heads) |   
          | Programming: | through PC via HART¢ç adapter (OR7838SH) |   
          | Emissivity: | 0.10 to 1.00 programmable |   
          | Data functions: | max, min, average value hold, compensation of ambience 
            radiation |   
          | Limit value programming: | 1 limit value incl. hysteresis, also usable for monitoring 
            the temperature of the measuring head |   
          | ALMEMO¢ç application: | For the measuring head versions, which cannot be 
            addressed and remotely programmed, we recommend, for acquisition and 
            storing the measured values, our panel meters ALMEMO¢ç 4490-2 and the 
            transmitter ALMEMO¢ç 8990-1 with one measuring input. For several measuring 
            heads our desktop data loggers ALMEMO¢ç 3290-8 are suitable. |  
 
 
         
          | Types (incl. rigid mounting angle 
            and fastening screw): |   
          | MR783810(P) | For universal applications, standard 
            optics OR7838OS1 (Fresnel Lens) Meas. range -18 to 500¡ÆC, spectral range 8 to 14 ¥ìm, response time 
            165ms, optical resolution 15:1
 |   
          | MR783811(P) | For universal applications, standard optics OR7838OS3 
            (Amtir Lens) Meas. range -18 to 500¡ÆC, spectral range 8 to 14 ¥ìm, response time 
            165ms, optical resolution 33:1
 |   
          | MR783821(P) | For high temperature measurements in metal finishing 
            and in rotary tubular kilns, standard optics OR7838OS3 (Sapphire Lens)
 Meas. range 200 to 1000¡ÆC, spectral range 3.9 ¥ìm, response time 165ms, 
            optical resolution 33:1
 |   
          | MR783851(P) | For maximum temperature measurements in metal finishing, standard optics OR7838OS6 (Float Glass Lens)
 Meas. range 500 to 2000¡ÆC, spectral range 2.2 ¥ìm, response time 100ms, 
            optical resolution 60:1
 |   
          | MR783831(P) | For high temperature measurements in glass production 
            and at heating up and hardening, standard optics OR7838OS3 (Calcium Fluoride Lens)
 Meas. range 250 to 1650¡ÆC, spectral range 5.0 ¥ìm, response time 165ms, 
            optical resolution 33:1
 |   
          | MR783841(P) | For low temperature measurements in the production 
            of plastic foils and normal foils, standard optics OR7838OS3 (Calcium Fluoride Lens)
 Meas. range 10 to 360¡ÆC, spectral range 7.9 ¥ìm, response time 165ms, 
            optical resolution 33:1
 |   
          | (P) Measuring heads remotely 
            programmable |  |   
    | 
 
         
          | Options: |   
          | OR7838IS | Inherent safety (Eex in IIC T4), only 
            available with programmable meas. heads without cooling jacket |   
          | OR7838KL | Water/air cooling housing including air blow attachment, 
            factory mounted |   
          | OR7838ZB | Zener barrier including current supply |   
          | OR7800KZ1 | Factory test certificate, based on DKD/NIST certified 
            sensors (only with delivery of new devices)
 |  
 
         
          | Accessories: |   
          | ZR7838SF | for programmable measuring heads MR7838xP Protective window, snap-on, according to above lens detail
 |   
          | OR7838SH | Remote control set incl. HART adapter and software |   
          | ZR7838NT | Industrial mains adapter 110/220V - 24VDC |  |  |  |  |  |  |  
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