Specifications

Section 3. CR3000 Measurement Details
The program was run on a Druck water level pressure transducer with 200 feet
of cable. The first six measurements are shown in Table 3.3-1. All 20 values
are plotted in Figure 3.3-1. The reading has settled by the fourteenth
measurement, PT(14), thus a settling time of 1400 µs is adequate.
Table 3.3-1. First Six Values of Settling Time Data
TOA5 Pepe' CR3000 1079 CR3000.Std.01.00 CPU:Settlebridge.CR3 1455 Settle
TIMESTAMP RECORD PT(1) PT(2) PT(3) PT(4) PT(5) PT(6)
TS RN
Smp Smp Smp Smp Smp Smp
1/3/2000 23:34 0 0.03638599 0.03901386 0.04022673 0.04042887 0.04103531 0.04123745
1/3/2000 23:34 1 0.03658813 0.03921601 0.04002459 0.04042887 0.04103531 0.0414396
1/3/2000 23:34 2 0.03638599 0.03941815 0.04002459 0.04063102 0.04042887 0.04123745
1/3/2000 23:34 3 0.03658813 0.03941815 0.03982244 0.04042887 0.04103531 0.04103531
1/3/2000 23:34 4 0.03679027 0.03921601 0.04022673 0.04063102 0.04063102 0.04083316
Settling Time
0.037
0.038
0.039
0.04
0.041
0.042
0.043
0.044
12345678910111213141516171819
Time (x100 us)
mV/Volt
Series1
Series2
Series3
Series4
Series5
FIGURE 3.3-1. Settling Time for Pressure Transducer
3.4 Thermocouple Measurements
A thermocouple consists of two wires, each of a different metal or alloy, which
are joined together at each end. If the two junctions are at different
temperatures, a voltage proportional to the difference in temperatures is
induced in the wires. If the junctions are at the same temperature, there is no
voltage. When a thermocouple is used for temperature measurement, the wires
are soldered or welded together at the measuring junction. The second
3-8