 | Fluke 190N Portable Neutron Survey Meter. |  |
 | 
The self-contained 190N measures mRem in accordance with the classical Anderson and Braun design. The neutron probe can be attached to either a 190 Survey Meter or a 190F Frisker for continuous neutron surveys or area monitoring. This product has all the salient features of an auto-scaling digital survey meter including data logging. Using the 190-lA Infrared Communicator, manual data logging or automatic preset time data logging is accessible for data handling. Neutron Probe, RP-N, can be interfaced to the 190F Frisker, with ac power for continuous monitoring. Specifications Readout: Programmable features of a standard Model 190 Survey Meter. Refer to the Model 190 data sheet for complete details Alarm: Audio and visual setpoint can be programmed into the Model 190N via the Model 190-1A Infrared Communicator Logging of data: The 190-1A Infrared Communicator interfaced to a personal computer can be used to set up data logging Detector assembly, Model RP-N: The detector assembly is a polyethylene cylinder, 9.5 inches long by 8.5 inches in diameter, containing a BF3 proportional counter and neutron energy compensating materials. It is based upon the standard |
| reliable Anderson and Braun design for neutron energy response. The handle is padded for ease of gripping. An adjustable
shoulder strap is provided BF3 operating characteristics: The BF3 proportional counter operates at 1150 V. Active length is 2 inches (5.08 cm). Fill gas is enriched BF3, 96% Boron 10. Gas pressure is 20 cm Hg. Resolving time is 1 microsecond, plateau slope is 2% per 100 V and tube life expectancy is greater than 1010 counts Typical neutron sensitivity: Nominal 2000 counts per mRem Range Rate: 0 μRem/h to 75 Rem/h - 0 μSv/R to 0.75 Sv/h - 0 CPM to 2.5 x 106 CPM - 0 CPS to 41,660 CPS Integrate: 0 μRem to 1000 Rem - 0 μSv to 10 Sv - 0 to 109 counts Gamma sensitivity/rejection: No response in 137Cs gamma radiation in fields up to 500 R/h Accuracy: 10% of theoretical ICRP dose rate Dimensions: 12.50 in x 10.25 in (d) (31.75 x 26 cm) Miscellaneous: Detector assembly cable length: 4.5 ft (1.37 m). An optional 30 ft (9.14 m) cable is available Weight: 21 lb (9.52 kg) (total Model 190 + detector assembly) Directionality: Less than 20% in three orthogonal directions Temperature range: 190 operating range is 14º to 104ºF (- 10° to + 40°C). The detector assembly operating range is - 112º to 176ºF (- 80° to + 80°C) Power requirements: Four 9 V alkaline batteries supplied, 100 hours operation Calibration: The Model 190N is calibrated against a NIST traceable “Tissue Equivalent Proportional Counter” and |
 |
 |
 |