Section 5
OM6622T-A-00
30 January
2018
5-5
5.2.2.
Set Up
1.
Ensure that the 6622T Thermometry Bridge is switched on and have the following
resistors ready for connection to the 6622T or pre-connected to scanner channel
leads from the optional 6664C scanner as defined above.
2.
Set these standard resistors into the controlled temperature environment and allow
time for them to stabilize. The Guildline model 6634A offers up to 10 of these resistors
in a temperature stabilized rack mountable chamber. Open the BridgeWorks Data
Acquisition Software in the computer.
5.2.3.
Verification
1.
Use the “Test Sequence” function of the “Configuration” menu of the BridgeWorks
Data Acquisition Software to measure the resistance ratio of each resistor pair with
the corresponding excitation current and reversal rate listed below. See the
BridgeWorks Software User’s Manual for the particulars of running a test
sequence. These measurements can also be made manually. If they are made
manually, allow sufficient time for the measurement to settle (1 – 2 hours) and
ensure that all measurements made that are related to a given closure are within 24
hour of each other.
Meas.
No.
R
X
Resistor
R
s
Resistor
Excitation
Current
Reversal
Rate
Meas.
Mode
Tests 1 – 13 for all 6622T T-Option bridges.
1
10
10
3.16mA
20s
Normal
2
10
10
3.16mA
20s
Normal
3
100
100
1.0mA
20s
Normal
4
100
100
1.0mA
20s
Normal
5
1k
1k
1.0mA
20s
Normal
6
1k
1k
1.0mA
20s
Normal
7
25
10
2.0mA
20s
Normal
8
100
25
0.5mA
20s
Normal
9
100
10
0.5mA
20s
Normal
10
300
100
0.5mA
20s
Normal
11
1k
300
0.2mA
20s
Normal
12
1k
100
0.2mA
20s
Normal
2. For each resistor pair, calculate and report the interchange closure error. For example, if
the Rx:Rs ratio of the first measurement is R
a
and the Rx:Rs ratio of the second
measurement, where the two resistors are exchanged with one another, is R
b
, then the
interchange error e
i
in ppm of the nominal ratio is:
Содержание 6622T Series
Страница 2: ......
Страница 8: ...OM6622T A 00 30 January 2018 vii...
Страница 10: ...OM6622T A 00 30 January 2018 ix...
Страница 16: ...Section 1 OM6622T A 00 30 January 2018 1 6...
Страница 34: ...Section 3 OM6622T A 00 30 January 2018 3 8 Figure 3 3 Rear Panel Connections Low Ohm Mode with 6623...
Страница 35: ...Section 3 OM6622T A 00 30 January 2018 3 9 Figure 3 4 Rear Panel Connections Low Ohm Mode with 6623A 300...
Страница 37: ...Section 3 OM6622T A 00 30 January 2018 3 11 Figure 3 5 Rear Panel Connections PRT SPRT...
Страница 80: ...Section 4 OM6622T A 00 30 January 2018 4 42...
Страница 92: ...Section 6 OM6622T A 00 30 January 2018 6 6...
Страница 114: ...Section 7 OM6622T A 00 30 January 2018 7 22...