Siemens Remote Displays SITRANS RD100 - Manual (Page 10)

Page 8 SITRANS RD100 – INSTRUCTION MANUAL 7ML19985JU01
Setup
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 the left screw that holds the display PCB to the enclosure and
loosen the right screw about four turns so the display PCB remains attached to the
enclosure.
3. Rotate the display PCB 90° to gain access to the input signal PCB.
4. Next, connect a calibrated current source as shown in Calibrator connected to input
signal PCB on page 6.
Decimal point selection
The decimal point jumper array is located in the lower right corner of the display PCB
next to the display. It is labeled DP1, DP2, DP3.
Place a jumper over both pins of DP1 for a display of 199.9, DP2 for 19.99, or DP3 for 1.999.
Calibration
LO and HI calibration controls are located to the left of the display (see Calibrator
connected to input signal PCB on page 6).
1. Apply a signal equal to 4 mA and adjust the LO control to display the desired reading.
2. Apply a signal between 16 and 20 mA and adjust the HI control to display the desired
reading.
3. Complete the calibration procedure by making any minor adjustments to the LO and
HI controls.
Installation
To install the meter, remove the display PCB from its enclosure and connect a ½" conduit
fitting to the hole provided. Refer to
Removing display PCB from the loop on page 9 for
WARNINGS:
• If any of the following operations are performed in the hazardous
area, all appropriate hazardous area procedures must be
followed.
• To prevent damage to electronic components caused by
electrostatic discharge, a grounding strap should be worn when
servicing the display.