Basler Electric BE3-49R-3 Inputs - Manual (Page 2)

CALIBRATION
Proper calibration requires a precision decade resistance
box with 1% accuracy or better. While calibrating the relay,
burden resistors must be connected across the remaining,
open RTD inputs. A temperature and resistance cross-
reference table for your RTDs is also needed. Use the
following procedure to calibrate your relay.
1. Adjust the SET control fully counterclockwise.
2. Connect the decade resistance box to RTD input A and
connect a 10
Ω (style 5HXXX) or 100 Ω (style 5IXXX)
burden resistor across the remaining RTD inputs. The
burden resistor power rating should be ¼ W or greater.
Apply nominal external operating power to the relay.
3. Set the decade resistance box at the value that
corresponds to the desired temperature setpoint.
4. Slowly adjust the SET control clockwise until the A and
TRIP LEDs light and the output relay energizes.
5. Repeat Steps 2 through 4 for SET 2 and SET 3.
MAINTENANCE
BE3 relays are solid-state devices that require no
maintenance. In the event that your relay requires repair,
contact Basler Electric, Highland, IL, USA for return
authorization.
ORDERING INFORMATION
Figure 3 shows the BE3 temperature relay style chart.
FIGURES
Figure 1. BE3-49R Controls, Indicators, and Terminals
Figure 2. BE3-49R Auxiliary Power,
Metering Output, and Output Contact
Connections
Figure 3. BE3-49R Style Number Identification Chart
Publication
9320500990
Revision
D
Instructions
Date
03/14
Page
2 of 2