Impulse DSCP20 User Manual download pdf

Configurable Transmitters

DSCP

For information call 800-444-7644

178

DSCP20

Programmable 2-Wire Temperature Transmitter, DIN Mount

▲

Features

 Low-Cost Non-Isolated 4-20mA Transmitter

 No Power Supply Required, Powered

from Output Loop Current

 Interfaces to All Standard Thermocouples

and RTDs

 Software Configurable Input Type and Range

 Open and Short-Circuit Input Detection

 Configurable with or without Output Loop

Power Connected

 Mounts on Standard DIN Rail

 -25°C to +80°C Operating Temperature

 CE Compliant

Figure 1: DSCP20 Block Diagram

Description

Each DSCP20 2-wire transmitter is designed for measuring temperature using

thermocouples or RTDs. The input type, measurement range, and other

features are software configurable. A PC, the DSCX-887 and DSCX-416

interface cables, and the DSCX-895 configuration software are required to

configure the transmitter. Communication is serial RS-232C.

The DSCP20 can interface to 12 industry standard thermocouple types: J, K,

T, E, R, S, B, N, L, U, C, and D. Cold junction compensation is selectable as

either internal or external. Three RTD types, Pt 100, Ni 100, and Cu 50* can

be interfaced in a two, three or four wire connection. All inputs are linearized

using up to 23 points of interpolation, and total errors are less than ±0.2%.

Other configurable features include: zero point and input range adjustment,

output response for open or short-circuit sensor or cable failure, normal or

inverted output, ripple suppression for 50Hz or 60Hz, and output time response.

The DSCX-895 configuration software allows query, print-out and saving of

configuration settings, display of input measurement value, and display of

interpolation table points.

*Call factory for Cu RTD information.

Thermocouple Type and Material

B Pt30Rh-Pt6Rh

E NiCr-CuNi

J Fe-CuNi

K NiCr-Ni

L Fe-CuNi

N NiCrSi-NiSi

R Pt13Rh-Pt

S Pt10Rh-Pt

T Cu-CuNi

U Cu-CuNi

C W5 Re/W26 Re

D W3 Re/W25 Re

Type Material

(see Electrical

Connections

on page 182 for

connection details)

1 2 3 4 5

Configurable Transmitters 1

Summary of Contents

Page 1 - Configurable Transmitters

Configurable TransmittersDSCPFor information call 800-444-7644178DSCP20Programmable 2-Wire Temperature Transmitter, DIN Mount▲ Features Low-Cost No

Page 2

DSCPVisit our website www.dataforth.com179Configurable TransmittersDSCPSpecificationsInput Range, Thermocouple Reference Table 1Thermocouple Types:B,E

Page 3

Configurable TransmittersDSCPFor information call 800-444-76441804. Output characteristic0) Standard 4-20mA1) Inverted 20-4mA5. Open and short-circuit

Page 4

DSCPVisit our website www.dataforth.com181Configurable TransmittersDSCP0...40 X X X X0...50 X X XXXX XX0...60 X X XXXX XX0...80 X X XXXXX XX0...100 X

Page 5

Configurable TransmittersDSCPFor information call 800-444-7644182Electrical ConnectionsDimensionsTable 5: Accessories and Spare PartsDSCP20 Clipped on

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Impulse DSCP20 User Manual

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