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Presys Instruments
2.3 - Process Input Signal Connections
The Indicator presents specific inputs for connection of thermocouples, RTD,
current (mA) or voltage (V). See the different types and ranges of input sensors in
table 1, section 1.3 on Technical Specifications.
The connections explained below refer to the different types of input
which exist in the several models of the DMY-2015 Indicator. Make only the
connections allowed by the specific inputs in your instrument.
In order to avoid noise in the wiring, use twisted pair cable and cross sensor
connection wire inside a metallic tube or use shielded cable. Make sure to connect
only one shield wire end either to board terminal or to sensor ground, as shown in the
next items.
WARNING: GROUNDING TWO SHIELD WIRE ENDS MAY CAUSE NOISE IN THE
INDICATOR.
2.3.1 - Thermocouple Input
When using only one thermocouple, connect it to input 1, in order to get a
better precision in the temperature measurement, since the cold junction sensor is
placed near input 1.
In order to reduce the error due to cold junction compensation, use thermal
paste in the rear, at the terminals where the thermocouple is connected to the cold
junction sensor.
Fig. 3 - Indicator terminals
DMY - 2015
Installation
Página 7
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