Cr5000 overview, Ov1. physical description, Ov1.1 measurement inputs – Campbell Scientific CR5000 Measurement and Control Module User Manual

Page 5: Ov1.1.1 analog inputs, Ov-1

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OV-1

CR5000 Overview

The CR5000 provides precision measurement capabilities in a rugged, battery-operated
package. The system makes measurements at a rate of up to 5,000 samples/second with
16-bit resolution. The CR5000 includes CPU, keyboard display, power supply, and analog
and digital inputs and outputs. The on-board, BASIC-like programming language includes
data processing and analysis routines. PC9000 Software provides program generation
and editing, data retrieval, and realtime monitoring.

CAUTION
DC ONLY

SN:

Logan, Utah

MADE IN USA

CR5000 MICROLOGGER

H

L

1

DIFF

1

2

H

L

2

3

4

H

L

3

5

6

H

L

4

7

8

H

L

5

9 10

H

L

6

11 12

H

L

7

13 14

H

L

8

15 16

H

L

9

17 18

H

L

10

CS I/O

(OPTICALLY ISOLATED)

RS-232

COMPUTER

19 20

SE

H

L

11

DIFF

21 22

H

L

12

23 24

H

L

13

25 26

H

L

14

27 28

H

L

15

29 30

H

L

16

31 32

H

L

17

33 34

H

L

18

35 36

CONTROL I/O

CONTROL I/O

POWER

UP

GROUND

LUG

pc card

status

G

G 12V

12V

Hm

A B C

D E F

J K L

G H I

M N O

T U V

P R S

W X Y

* / )

- + (

< = >

Spc Cap

$ Q Z

, ' _

1

2

PgUp

ENTER

BKSPC

SHIFT

ESC

PgDn

End

Del

Ins

Graph/

char

3

4

5

6

7

8

9

0

CURSOR

ALPHA

POWER IN

11 - 16 VDC

H

L

19

37 38

H

L

20

39 40

SE

VX1

VX2

VX3

VX4

CAO1

CAO2

IX1

IX2

IX3

IX4

IXR

P1

P1

C1

C2

C3

C4

G

C6

C5

C7

C8

G

G

>2.0V

<0.8V

5V

5V

G

SDI-12

12V

G

SDM-C2

SDM-C3

SDM-C1

G

12V

G

SW-12

SW-12

G

POWER OUT

FIGURE OV1-1. CR5000 Measurement and Control System

OV1. Physical Description

Figure OV1-2 shows the CR5000 panel and the associated program
instructions. Unless otherwise noted, they are measurement instructions
(Section 7).

OV1.1 Measurement Inputs

OV1.1.1 Analog Inputs

There are 20 differential or 40 single-ended inputs for measuring voltages up
to

±5 V. A thermistor installed in the wiring panel can be used to measure the

reference temperature for thermocouple measurements, and a heavy copper
grounding bar and connectors combine with the case design to reduce
temperature gradients for accurate thermocouple measurements. Resolution on
the most sensitive range is 0.67

µV

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