Setup
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.
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
Page 8 | SITRANS RD100 – INSTRUCTION MANUAL | 7ML19985JU01 |
