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Low profile, dip-switch
programmable and linearised
transmitter for Pt100
DAT 1111
DAT 1111
GENERAL DESCRIPTION
The transmitter DAT 1111 is designed to provide on output a 4÷20 mA current loop linearised signal proportional with the temperature characteristic provided
from the Pt100 connected to its input.
It is possible to connect on input both Pt100 3 wires and Pt100 2 wires sensors.
It is possible to program the input range by the 4 way DIP-switches available removing the protection plastic cap located on the top of device (see the section
“Input ranges table”).
The regulation of the zero and full-scale value are made using the ZERO and SPAN potentiometers.
The DAT 1111 is in compliance with the Directive 2004/108/EC on the Electromagnetic Compatibility.
It is housed in a self-extinguish plastic enclosure suitable for DIN B in-head mounting.
Moreover ( by proper mounting kit ) it is possible to mount the DAT 1111 on DIN rail.
FEATURES
- Input from Pt100
- Input scale in °C or °F
- Zero and Span programmable by DIP-switches
- 4÷20 mA current loop linearised output
- Good accuracy and linearity
- EMC compliant – CE mark
- Suitable for DIN B in-head mounting
- Option for DIN rail mounting in compliance with EN 50022 (DIN RAIL Option)
USER INSTRUCTIONS
The transmitter DAT 1111 must be powered by a direct voltage between 10 to 32 V applied to the terV and -V.
The 4÷20 mA output signal is measurable in the power loop as shown in the section “Output/Power supply connections”; Rload is the input impedance of
instruments on the current loop; to obtain a correct measure, the value of Rload will be calculated as function of the power supply value ( see section “ Load
characteristic”).
The input connections must be made as shown in the section "Input connections".
The Pt100 three wires must be connected to the terminals 1 and 3, connecting the third wire to the terminal 2.
The Pt100 two wires must be connected to the terminals 1 and 3, connecting the terminal 2 and 3.
The configuration of the input range must be made by DIP-switches. To configure the device refer to the section “Input ranges table”.
Regulate the output value by the ZERO and SPAN regulations.
To calibrate and install the transmitter refer to sections " DAT1111: configuration and calibration" and “Installation Instructions”.
TECHNICAL SPECIFICATIONS (Typical at 25 °C and in nominal conditions)
Input
Sensor type RTD Pt100 in according to IEC 60751
Minimum input Span 50 °C (122 °F)
Zero programmability From -50 °C (-58 °F) up to + 50 °C (122 °F)
Span programmability From 50 °C (122 °F) up to 650 °C (1202 °F)
Excitation current 1 mA typ.
Line resistance influence 0.05 % of f.s./ohm (100 ohm max. balanced per wire)
Output
Output type 4 ÷ 20 mA on current loop
Sensor interruption signalling Positive out of scale (> 20 mA)
Maximum output signal 35 mA
Load resistance (Rload) see section “Load characteristic”
Response time (from 10 to 90 % of f.s.) 300 ms
Warm-up time 3 min.
Performances
Calibration error ± 0.1 % of f.s.
Linearity error (*) ± 0.15 % of f.s.
Thermal drift 0.03 % of f.s./°C
Power supply voltage (**) 10÷32 Vdc
Electromagnetic Compatibility (EMC)
( for industrial environments ) Immunity: EN 61000-6-2; Emission : EN 61000-6-4.
Operating Temperature -20 ÷ 70 °C
Storage Temperature -40 ÷ 85 °C
Humidity (not condensed) 0 ÷ 90%
Weight about 35 g.
(*)inclusive of hysteresis, linearisation error and power supply voltage variation
(**)internally protected against reverse polarity.
