Instruction manual

Introduction
Specifications
1-8 Model 5030i SHARP Instruction Manual Thermo Fisher Scientific
The beta measurement chamber houses an RTD temperature sensor. The
T-sensor directly measures the temperature of the incoming sample stream
for a continuous air mass compensation, and the flow system. The flow and
ambient sensor measurements are combined within a firmware algorithm to
maintain an accurate measurement and control of volumetric flow at the
inlet and through the differential orifice.
The Model 5030i also includes three pressure sensors to measure the
differential pressure across a subsonic orifice, vacuum under the filter tape,
and barometric pressure. The flow P-sensor is solely used for measurement
at the orifice for flow rate control. The vacuum sensor is used for air mass
compensation, as an indicator for clogging of the system and is included in
the volumetric flow control. The barometric P-sensor is used for air mass
compensation and for volumetric flow rate regulation.
The volumetric flow system is built on a calibrated feedback signal from the
CPU to the proportional valve signal. By using this flow control, flow
stability is easily maintained.
With regard to the hybrid, 5030i SHARP Monitor methodology, the
nephelometer and beta attenuation concentrations are calculated and both
values are digitally filtered (e.g. averaged) with an elastic time constant that
is a function of the real-time concentrations. The time constant of this
dynamic digital filter will vary with concentrations. It is the ratio of those
two digitally filtered concentrations that becomes a dynamic correction
factor for the real-time nephelometer, and the product of this correction
factor and nephelometer becomes the SHARP Monitor concentrations.
Table 1–1 lists the specifications for the Model 5030i.
Table 1–1. Model 5030i Specifications
Safety/Electrical Designations
Designed to meet:
CE: EN 61326:1997 + A1:1998 + A2:2001 + A3:2003, EN:61010-1
UL: 61010-1:2004
CSA: C22.2 No. 61010-1:2004
FCC: Part 15 Subpart B, Class B
Source and Detector
IR LED, 6mW, 880 nm Silicon/Hybrid Amplifier Photodetector
β Source: Carbon-14, <3.7 MBq (<100 Ci) Sealed Source Device
Proportional Radiation Detector
Standard System Configuration
Menu-driven software for user interaction via 320 x 420 pixels graphics display
Specifications