Baker Hughes Druck DPI880 Manual De Instrucciones página 12

2.7 RTD/Ohms Connections
In the examples that follow 2W, 3W, and 4W identify the 2,
3, and 4-wire connections for a RTD or resistance.
2.7.1 Measure/Simulate an RTD or Ohms
To measure/simulate RTD values or Ohms:
1. Connect the instrument (Figure 7 & Figure 8) and, if
necessary, adjust the Set Up (Table 1).
2. Select the task from the task selection menu (Table 2).
3. If necessary, adjust the Settings (Table 4 & Table 5)
and/or the output values to the system (Table 7).
3W
V
Hz
mA +
3W
1
2
1
MENU
ESC
OK
HOLD
a) RTD °C or °F
Figure 7: Example Configuration - To Measure the
Temperature or Resistance
For an input, the display shows the number of RTD or
resistance connections.
Symbol Description
Four-wire RTD attached.
If this symbol does not agree with the number of
connections:
• Make sure that the connections are correct.
• Make sure that the wires and the sensor are
serviceable.
Copyright 2005 Baker Hughes Company.
8 | DPI880 Instruction Manual–English
2W 2W
4W
RTD
COM
TC mA -
4W
30V MAX
°C
mA
1
MENU MENU
OK OK
Pt100
26.04 110.15
850°C
Settings
1
2
Pt100
MENU
ESC
OK
HOLD
Figure 8: Example Configuration - To Simulate the
2.8 Thermocouple (TC) Connections
Attach the TC wires to the applicable TC mini-connector
(Figure 9). The wider blade is the negative. Then attach the
connector to the instrument.
2.8.1 Measure/Simulate a Thermocouple
400
To measure/simulate the TC values:
1. Connect the instrument (Figure 9) and, if necessary,
adjust the Set Up (Table 1).
2. Select the task from the task selection menu (Table 2).
3. Select Settings () to change the operation from
Temperature to mV or mV to Temperature.
4. If necessary, adjust the Settings (Table 4 & Table 5)
and/or the output values to the system (Table 7).
1
2
MENU
ESC
OK
HOLD
100
, , ,
0
3W 2W 2W 4W
V RTD
COM
Hz
mA + mA -
TC
3W 4W
30V MAX
mA
1 1
MENU
OK
Pt100
0.00
850°C
Edit Settings
a) RTD °C or °F
Temperature or Resistance
RTD
V
COM
Hz
mA + TC mA -
3W 4W
30V MAX
1
MENU
OK
CJ=25.4
K
34.7
1372°C
Settings
a) °C or °F (Input)
+
-
-
+
+VE
-
-VE
MENU
OK
0.0
4000
Edit Settings
K
°C
Settings
mV
MENU
OK
0.373
75mV
Settings
b) mV (Input)