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4WPB100, 4WPB1K PRT Terminal Input Modules - Page 1
HLG
AG L H L AG H
4WPB100, 4WPB1K PRT Bridge Terminal Input Modules
Revision: 12/06
Copyright © 1996-2006 Campbell Scientific, Inc.
4WPB100, 4WPB1K PRT Terminal Input Modules - Page 2
...this number clearly on the outside of the problem, an RMA number will return such products by Campbell Scientific, Inc. Affiliate companies handle repairs for special, indirect, incidental, or consequential damages. CAMPBELL SCIENTIFIC, INC. is :
CAMPBELL SCIENTIFIC, INC. CAMPBELL SCIENTIFIC, INC.'s obligation under normal use and service for twelve (12) months from defects in lieu...
4WPB100, 4WPB1K PRT Terminal Input Modules - Page 3
... numbers refer to Campbell Scientific Dataloggers..3 4-1. PRT in 4WPB1000 Based on
Maximum Temperature and Input Voltage Range 3 4-2. Circuit Schematic 2 3-1. Wiring for 100 Ohm PRT in 4WPB100 Based on
Maximum Temperature and Input Voltage Range 4
i 4WPB100, 4WPB1K Table of this document. Terminal Input Module 1 2-1. Excitation Voltage for links to specific sections.
1. Wiring...
4WPB100, 4WPB1K PRT Terminal Input Modules - Page 5
...for resistive bridge measurements, voltage dividers, and precision current shunts. Terminal Input Module
2. Specifications
Current limiting 10 kOhm Resistor
Tolerance @ 25 °C
±5%
Power ...rating
±0.01%
4 ppm/°C 8 ppm/°C 0.25 W
1 The 4WPB100 and 4WPB1K are used to provide completion resistors for 4 wire half bridge measurements of 100 Ohm and 1...
4WPB100, 4WPB1K PRT Terminal Input Modules - Page 6
4WPB100, 4WPB1K PRT Bridge Terminal Input Modules
Vx
HI
LO HI LO GND
10k 5% H
Rf
Rf = 100 , 1k
0.01% L
Rs GND
... 2;
Circuit Schematic
3. The black excitation wire is connected to the next differential channel. Datalogger Ex1
1H 1L AG or 2H 2L
4WPB100 L G
PRT
FIGURE 3-1. The dashed lines in Figure 2-1 indicate the sensor wiring. When making 4 wire half bridge measurements, the...
4WPB100, 4WPB1K PRT Terminal Input Modules - Page 7
...
832
1664
790
1581
3 4WPB100, 4WPB1K PRT Bridge Terminal Input Modules
TABLE 3-1. 4WPB100/4WPB1K Connections to the maximum ...Instruction 9 (used with CR10(X), 21X, and CR7).
The result of maximum temperature and the input voltage ranges used with the different dataloggers. The excitation voltages used were chosen with the first measurement range not set to Campbell Scientific...
4WPB100, 4WPB1K PRT Terminal Input Modules - Page 10
4WPB100, 4WPB1K PRT Bridge Terminal Input Modules
4.3 CR7
1: Full Bridge w/mv Excit (P9)
1: 1
Reps
2: 3
± 15 mV Slow Range
3: 3
± 15 mV Slow Range
4: 1
In Card
5: 1
DIFF Channel
6: 1
Ex Card
7: 1
Ex Channel
8: 1
...
4WPB100, 4WPB1K PRT Terminal Input Modules - Page 11
... allows the use of the four wire half bridge Instruction is:
V2 V1
the voltage drop is kept to...a minimum. This insures that noise in the excitation leads. 4WPB100, 4WPB1K PRT Bridge Terminal Input Modules
4.5 CR1000
'CR1000 Series Datalogger
Public Rs_R0, Temp_C
DataTable (...to be made on signal noise and that allow one set of wires to measure the PRT. Because the fixed resistor...
4WPB100, 4WPB1K PRT Terminal Input Modules - Page 12
...error of Rf/R0 is greatest.
Thus, a multiplier of 0.05 °C at 125 °C. The fixed resistor must be 2.102 V to 2.1 volts (e.g., if the 10 kOhm resistor is :
V2 = I ⋅ Rs = Rs V1 I ⋅ R f R f
8 For example, if it is decided to set...33 °C at 60 °C.
4WPB100, 4WPB1K PRT Bridge Terminal Input Modules
The RTD Instruction (16) computes the temperature (°C)...
4WPB100, 4WPB1K PRT Terminal Input Modules - Page 13
...calibration, connect the PRT to the datalogger and program the datalogger to Ro/Rf since Rs=Ro. 4WPB100, 4WPB1K PRT Bridge Terminal Input Modules With the PRT at 0 °C, Rs=Ro. By making a measurement with the 4 wire ..., which is equal to measure the PRT with the PRT in an ice bath, errors in an ice bath (@ 0°C; Thus, the above result becomes Ro/Rf, the reciprocal of the bridge ...
4WPB100, 4WPB1K PRT Terminal Input Modules - Page 14
4WPB100, 4WPB1K PRT Bridge Terminal Input Modules This is a blank page.
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