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Note: The information contained here concerns only the SITRANS RD100 CE
version. For additional information, please consult the complete RD100
instruction manual on the enclosed CD.
Note: Except where noted, all specifications apply to operation at +25 °C (+77 °F).
Display
• 1.1 " (27.9 mm) high LCD, numeric display range from -1000 to 1999
• Optional backlight
Calibrator Connected to main board with no backlight
S+ Signal Positive Connection
S- Signal Negative Connection
B- Signal Negative Connection
if Using Backlight
For calibration, a calibrated current source and a screwdriver are required.
Calibration connections
To access the input terminals, remove the enclosure cover and the display PCB.
1.
Loosen the four screws on the enclosure cover and remove the cover.
2.
Completely loosen both thumb screws that hold the main board to the enclosure.
3.
Turn the main board over to gain access to the reverse side.
4.
Next, connect a calibrated current source as shown in Calibrator connected to main
board with no backlight above.
Calibration
LO and HI coarse and fine calibration controls are located below the display (Calibrator
connected to main board with no backlight above)
1.
Apply a signal equal to 4 mA and adjust the LO coarse control followed by the LO
fine control to display the desired reading.
2.
Apply a signal between 16 and 20 mA and adjust the HI controls to display the
desired reading.
3.
Complete the calibration procedure by making any minor adjustments to the LO and
HI fine controls.
MAIN BOARD BACK SIDE
-
+
CALIBRATED
CURRENT SOURCE
MAIN BOARD FRONT SIDE
J2 - Decimal Point Location Selection
R4 - HI Calibration Coarse Control
R5 - HI Calibration Fine Control
R6 - LO Calibration Coarse Control
R7 - LO Calibration Fine Control
Maximum Voltage Drop
• 1 V at 20 mA
• 4 V at 20 mA with optional backlight active
Calibration
• Four-step coarse and fine control; non-interacting zero and span
Approvals
• CE Marked
Note: This product is not approved by either FM nor CSA
Control loop connected to main board with backlight
MAIN BOARD BACK SIDE
-
POWER
SUPPLY
+
4-20mA
Control loop connected to main board without backlight
MAIN BOARD BACK SIDE
-
POWER
SUPPLY
+
4-20mA
WARNING: To prevent damage to electronic components
caused by electrostatic discharge, a grounding strap should
be worn when servicing the display.
WARNING: Electrostatic hazard. Clean only with a moist cloth.
Protect enclosure from exposure to chemical solvents and exces-
sive ultraviolet (UV) light (such as sunlight).
Loop connections
Disconnect power to the loop and install the meter as illustrated in either Control loop
connected to main board with backlight or Control loop connected to main board without
backlight above. Connect the negative terminal to S- to disable the backlight option or
connect it to B- to enable the backlight option. Replace the enclosure cover.
Removing display PCB from the loop
The display PCB cannot be removed from the loop as there is no separate loop PDB in
the CE Marked version of the SITRANS RD100.
Field wiring is
made to the back
side of the main
board which is
mounted in
the enclosure.
S+ Signal Positive Connection
S- Signal Negative Connection
B- Signal Negative Connection
if Using Backlight
-
+
TRANSMITTER
Field wiring is
made to the back
side of the main
board which is
mounted in
the enclosure.
S+ Signal Positive Connection
S- Signal Negative Connection
B- Signal Negative Connection
if Using Backlight
-
+
TRANSMITTER
LIM685ASI_A - 05/16
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