Measurement-computing DBK19 User Manual download pdf

DBK19 14-Channel Thermocouple Card

Overview …… 1

Hardware Setup …… 2

Card Connection …… 2

Card Configuration …… 3

DaqBook/100 Series & /200 Series and DaqBoard [ISA type] Configuration ……3

DaqBook/2000 Series and DaqBoard/2000 Series Configuration …… 3

Software Setup …… 3

DBK19 – Specifications …… 4

Reference Notes:

o Chapter 2 includes pinouts for P1, P2, P3, and P4. Refer to pinouts applicable to your

system, as needed.

o In regard to calculating system power requirements, refer to DBK Basics located near the

front of this manual.

o Refer to the Signal Management chapter for information regarding Two-Point

Calibration of a Temperature Measurement System.

Overview

DaqView Users: When a DBK19 is used with a /2000 Series Device, the Internal Clock Speed

should be set to 100 kHz as described in chapter 3, DBK Setup in DaqView.

The DBK19 can attach to 14 thermocouples (T/C) for temperature measurements. The DBK19 features an

on-board cold junction sensor and a programmable-gain amplifier for measuring type J, K, T, E, N28, N14,

S, R, or B thermocouples. The table shows the temperature range for each thermocouple type.

T/C Type J K T E N28 N14 S R B

Temperature

Range °C

-200 to

760

-200 to

1260

-200 to

400

-270 to

1000

-270 to

400

0 to

1300

0 to

1780

0 to

1780

0 to

1820

Temperature

Range °F

-328 to

1400

-328 to

2300

-328 to

752

-454 to

1832

-454 to

752

32 to

2372

32 to

3236

32 to

3236

32 to

3308

True differential measurements of thermocouples require a bias current referenced to analog common;

therefore, resistors connect each input terminal to the analog common. Filter capacitors across each input

operate with input protection resistors to form single-pole RC low-pass filters.

Each DBK19 includes a cold-junction compensation circuit wired to channel 0. Channels 2 through 15

accept external thermocouples. The DBK19s can be used with other analog expansion cards and feature

screw terminals for direct connection. Up to 16 DBK19s can be attached to a single LogBook or a Daq

Device to measure up to 224 (16 × 14) temperatures.

DBK Option Cards and Modules 879795 DBK19, pg. 1

1 2 3 4

Summary of Contents

Page 1 - Overview

DBK19 14-Channel Thermocouple Card Overview …… 1 Hardware Setup …… 2 Card Connection …… 2 Card Configuration …… 3 DaqBook/100 Series & /200 Seri

Page 2 - Hardware Setup

Note: LogView and DaqView software includes functions for the conversion and linearization of thermocouple readings into temperature data. Progr

Page 3 - Software Setup

Card Configuration Assign a LogBook or Daq device channel number to the DBK19 card. Up to 16 DBK19s can connect to a LogBook or a Daq device. (Optio

Page 4 - DBK19 - Specifications

DBK19, pg. 4 879795 DBK Option Cards and Modules DBK19 - Specifications Name/Function: High-Accuracy Thermocouple Card Connector: DB37 male mat

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Measurement-computing DBK19 User Manual

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