3
R70-32 (WEB)
REV(12-04) D
Next, you will need to determine the
type
of micro-
processor controller PC board that is installed in your
recorder. Refer to Figures 1A, 1B and 1C and
compare these figures to the microprocessor controller
PC board that is installed in your recorder.
TYPE "A" CONTROLLER PC BOARD
If your recorder has a
Type A
microprocessor
controller PC board installed, then locate screw
terminal blocks J6 and JP5. Screw terminal block J6 is
normally used when connecting an RTD temperature
probe and JP5 is normally used to supply a signal input
to the recorder from a VOLTAGE or CURRENT type
probe. JP5 may also be used when connecting a
second RTD temperature probe (on a two pen
recorder). Refer to Figure 1A for the location of J6
and JP5 on the microprocessor PC board.
Figure 1A:
Microprocessor PC Board (Type “A”).
TYPE “B” CONTROLLER PC BOARD
If your recorder has a
Type B
microprocessor
controller PC board installed, then locate screw
terminal blocks J3 and J4 on the microprocessor PC
board. These screw terminal blocks are used to
provide signal input to the recorder for up to two
pens. Refer to Figure 1B for the location of J3 and J4
on the micro-controller PC board.
VIN
(located on
screw terminal block J4) is used to provide a signal
input to the recorder from a VOLTAGE type probe,
+5V
can be used to power an external probe.
Figure 1B:
Micro-Controller PC Board (Type B).
TYPE “C” CONTROLLER PC BOARD
If your recorder has a
Type C
microprocessor
controller PC board installed, then locate screw
terminal block J3 on the microprocessor PC board.
This screw terminal block is used to provide a signal
input to the recorder for one pen. Refer to Figure 1C
for the location of J3 on the micro-controller PC
board.
Figure 1C:
Micro-Controller PC Board (Type C).
Summary of Contents for 3940 Series
Page 5: ...Thermo Electron Corporation iv Model 3940 Series Thermo Electron Corporation Preface ...
Page 7: ......
Page 19: ......
Page 25: ......
Page 29: ......
Page 47: ......
Page 51: ......
Page 53: ......
Page 54: ...Model 3940 Series 7 1 Thermo Electron Corporation Section 7 Refrigeration Schematics ...
Page 55: ......
Page 56: ...Model 3940 Series 8 1 Thermo Electron Corporation Section 8 Electrical Schematics ...
Page 57: ...8 2 Model 3940 Series Thermo Electron Corporation Section 8 Electrical Schematics ...
Page 58: ...Model 3940 Series 8 3 Thermo Electron Corporation Section 9 Electrical Schematics ...
Page 59: ......
Page 60: ...8 4 Model 3940 Series Thermo Electron Corporation Section 9 Electrical Schematics ...
Page 61: ...Model 3940 Series 8 5 Thermo Electron Corporation Section 9 Electrical Schematics ...
Page 62: ...8 6 Model 3940 Series Thermo Electron Corporation Section 9 Electrical Schematics ...
Page 63: ......
Page 76: ...11 R70 32 WEB REV 12 04 D Figure 7 6 Recorder Case Dimensions ...