Fluke Biomedical TNT 12000 - Manual (Page 26)

TNT 12000
Users Manual
1-14
Adapters.................................................................. BNC Female to Binding Posts, BNC Female to Banana Plug
Test Leads .............................................................. 91.4 cm
(36 in) safety set with finger guards on probes and shrouded
banana plugs
Invasive Shunt
Shunt Impedance.................................................... 1 Ohm
Sensitivity................................................................ 1 mV per mA
Shunt Signal Input Limit .......................................... 1 A for 30 seconds (Limit set by power dissipation rating of shunt
resistors. Maximum common mode voltage is 500 V).
Input/Output ............................................................ 4 mm Binding posts, 4 mm Banana Plugs
Size ......................................................................... 4.45 cm x 3.66 cm x 1.75 cm
(1.75 in x 1.44 in x 0.69 in)
Weight..................................................................... 45 g (0.1 lb)
Non-Invasive Clamp
Range ..................................................................... 0 – 4 Amps
Sensitivity................................................................ 100 mV/A
Power Source ......................................................... 2 x 1.5 V AA UM3 Batteries
Current Consumption.............................................. 10 mA
Operating Condition ................................................ -10
° C to +50 ° C at 85 % max. RH
DoseMate Specifications
Accuracy ................................................................. ±1 % of rdg ±2 of range resolution steps (see DoseMate Measurment
Ranges) over the range of 18 to 28 ° C and ±2 of reading ±2 range
resolution steps over the full operating temperature range of 0 to
35
° C. This accuracy is exclusive of all ion chamber effects. A 3 %
NIST traceable calibration is provided with each system.
Bias Voltage............................................................ 300 V. The bias voltage is removed from the triaxial input connector at
instrument turnoff.
Ion Chamber Input .................................................. Triaxial-BNC input connector, collector and guard positive-biased
relative to ion chamber body/dosimeter chassis.
Ion Chamber Cable................................................. 1.8 m (6 ft) , Triaxial Male to Male cable
Test Stand............................................................... Machined stainless steel upright tool with baseplate, ion chamber
holder, and tray for HVL filters, which includes the ion chamber stem.
HVL Filter Set.......................................................... Set of nine aluminum filters for half-value layer measurements: one
2 mm, two 1 mm, two 0.5 mm, three 0.1 mm, and one 0.2 mm.
Temperature Accuracy............................................ ±2 ° C (3.6 ° F)
Pressure Accuracy.................................................. ±5 mm Hg
Note
The measured temperature is the internal temperature of the DoseMate,
which may not be the same temperature as the Ion Chamber that is in use.
Adequate time must be allowed for the DoseMate and Ion Chamber to
reach thermal equilibrium before automatic temperature sensing is used.
Measurement Ranges
Values for ion chambers are calculated using nominal sensitivities: 15 cc : 2.4 x 108 R/C, 150 CC: 2.4 x 107 R/C .
15 cc Ion Chamber
Units Effective Range [1] Threshold Resolution Step Size
R 100 μ to 20 60 μ 1 μ
R/s 100 μ to 20 60 μ 1 μ
R/min 5 m to 1200 3.6 m 50 μ
R/hr 100 m to 72 k 216 m 1 m
R/frame [2] 2 μ to 333 m 1 μ 0.02 μ
Gy 1 μ to 0.2 0.52 μ 0.01 μ
Gy/s 1 μ to 0.2 0.52 μ 0.01 μ
Gy/min 50 μ to 12 31.5 μ 0.5 μ
Gy/hr 1 m to 720 1.89 m 0.01 m
Gy/frame [2] 0.02 μ to 333 m 0.008 μ 0.2 n
[1] IEC 61674 effective range at 1 % resolution steps.
[2] At 60 frames/s (1 to 120 frames/selectable).