Low profile, dip-switch
programmable and linearised
transmitter for Pt100
DAT 1111
DAT 1111
GENE AL DESC IPTION
T e transmitter DAT 1111 is designed to provide on output a 4÷20 mA current loop linearised signal proportional wit t e temperature c aracteristic provided
from t e Pt100 connected to its input.
It is possible to connect on input bot Pt100 3 wires and Pt100 2 wires sensors.
It is possible to program t e input range by t e 4 way DIP-switc es available removing t e protection plastic cap located on t e top of device (see t e section
“Input ranges table”).
T e regulation of t e zero and full-scale value are made using t e ZERO and SPAN potentiometers.
T e DAT 1111 is in compliance wit t e Directive 2004/108/EC on t e Electromagnetic Compatibility.
It is oused in a self-extinguis plastic enclosure suitable for DIN B in- ead mounting.
Moreover ( by proper mounting kit ) it is possible to mount t e DAT 1111 on DIN rail.
FEATU ES
- 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 AIL Option)
USE INST UCTIONS
T e transmitter DAT 1111 must be powered by a direct voltage between 10 to 32 V applied to t e terminals +V and -V.
T e 4÷20 mA output signal is measurable in t e power loop as s own in t e section “Output/Power supply connections”; Rload is t e input impedance of
instruments on t e current loop; to obtain a correct measure, t e value of Rload will be calculated as function of t e power supply value ( see section “ Load
c aracteristic”).
T e input connections must be made as s own in t e section "Input connections".
T e Pt100 t ree wires must be connected to t e terminals 1 and 3, connecting t e t ird wire to t e terminal 2.
T e Pt100 two wires must be connected to t e terminals 1 and 3, connecting t e terminal 2 and 3.
T e configuration of t e input range must be made by DIP-switc es. To configure t e device refer to t e section “Input ranges table”.
Regulate t e output value by t e ZERO and SPAN regulations.
To calibrate and install t e 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./o m (100 o m 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 c aracteristic”
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.
T ermal 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%
Weig t about 35 g.
(*)inclusive of ysteresis, linearisation error and power supply voltage variation
(**)internally protected against reverse polarity.
