CR5000 Measurement and
Control System
Revision: 11/06
Copyright © 2000-2006
Campbell Scientific, Inc.
Warranty and Assistance
The CR5000 MEASUREMENT AND CONTROL SYSTEM is warranted
by CAMPBELL SCIENTIFIC, INC. to be free from defects in materials and
workmanship under normal use and service for thirty-six (36) months from
date of shipment unless specified otherwise. Batteries have no warranty.
CAMPBELL SCIENTIFIC, INC.'s obligation under this warranty is limited to
repairing or replacing (at CAMPBELL SCIENTIFIC, INC.'s option) defective
products. The customer shall assume all costs of removing, reinstalling, and
shipping defective products to CAMPBELL SCIENTIFIC, INC. CAMPBELL
SCIENTIFIC, INC. will return such products by surface carrier prepaid. This
warranty shall not apply to any CAMPBELL SCIENTIFIC, INC. products
which have been subjected to modification, misuse, neglect, accidents of
nature, or shipping damage. This warranty is in lieu of all other warranties,
expressed or implied, including warranties of merchantability or fitness for a
particular purpose. CAMPBELL SCIENTIFIC, INC. is not liable for special,
indirect, incidental, or consequential damages.
Products may not be returned without prior authorization. The following
contact information is for US and International customers residing in countries
served by Campbell Scientific, Inc. directly. Affiliate companies handle
repairs for customers within their territories. Please visit
www.campbellsci.com to determine which Campbell Scientific company
serves your country. To obtain a Returned Materials Authorization (RMA),
contact CAMPBELL SCIENTIFIC, INC., phone (435) 753-2342. After an
applications engineer determines the nature of the problem, an RMA number
will be issued. Please write this number clearly on the outside of the shipping
container. CAMPBELL SCIENTIFIC's shipping address is:
CAMPBELL SCIENTIFIC, INC.
RMA#_____
815 West 1800 North
Logan, Utah 84321-1784
CAMPBELL SCIENTIFIC, INC. does not accept collect calls.
CR5000 MEASUREMENT AND CONTROL SYSTEM
TABLE OF CONTENTS
PDF viewers note: These page numbers refer to the printed version of this document. Use
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PAGE
OV1. PHYSICAL DESCRIPTION
OV1.1 Measurement Inputs...........................................................................................................OV-1
OV1.2 Communication and Data Storage...................................................................................... OV-4
OV1.3 Power Supply and AC Adapter...........................................................................................OV-5
OV2. MEMORY AND PROGRAMMING CONCEPTS
OV2.1 Memory...............................................................................................................................OV-5
OV2.2 Measurements, Processing, Data Storage.........................................................................OV-5
OV2.3 Data Tables......................................................................................................................... OV-6
OV3. PC9000 APPLICATION SOFTWARE
OV3.1 Hardware and Software Requirements ..............................................................................OV-6
OV3.2 PC9000 Installation.............................................................................................................OV-6
OV3.3 PC9000 Software Overview................................................................................................ OV-7
OV4. KEYBOARD DISPLAY
OV4.1 Data Display...................................................................................................................... OV-12
OV4.2 Run/Stop Program............................................................................................................OV-16
OV4.3 File Display........................................................................................................................OV-17
OV4.4 Configure Display.............................................................................................................. OV-19
OV5. SPECIFICATIONS..........................................................................................................OV-20
1. INSTALLATION AND MAINTENANCE
1.1 Protection from the Environment........................................................................................... 1-1
1.2 Power Requirements ............................................................................................................. 1-1
1.3 CR5000 Power Supplies........................................................................................................ 1-2
1.4 Solar Panels........................................................................................................................... 1-4
1.5 Direct Battery Connection to the CR5000 Wiring Panel........................................................ 1-4
1.6 Vehicle Power Supply Connections....................................................................................... 1-4
1.7 CR5000 Grounding................................................................................................................ 1-6
1.8 Powering Sensors and Peripherals ....................................................................................... 1-9
1.9 Controlling Power to Sensors and Peripherals.................................................................... 1-10
1.10 Maintenance ........................................................................................................................ 1-12
2. DATA STORAGE AND RETRIEVAL
2.1 Data Storage in CR5000........................................................................................................ 2-1
2.2 Internal Data Format.............................................................................................................. 2-2
2.3 Data Collection....................................................................................................................... 2-3
2.4 Data Format on Computer................................................................................................... 2-10
i
CR5000 TABLE OF CONTENTS
3. CR5000 MEASUREMENT DETAILS
3.1 Analog Voltage Measurement Sequence.............................................................................. 3-1
3.2 Single Ended and Differential Voltage Measurements.......................................................... 3-4
3.3 Signal Settling Time............................................................................................................... 3-5
3.4 Thermocouple Measurements............................................................................................... 3-7
3.5 Bridge Resistance Measurements.......................................................................................3-17
3.6 Measurements Requiring AC Excitation.............................................................................. 3-19
3.7 Pulse Count Measurements................................................................................................. 3-20
3.8 Self Calibration..................................................................................................................... 3-21
4. CRBASIC - NATIVE LANGUAGE PROGRAMMING
4.1 Format Introduction................................................................................................................4-1
4.2 Programming Sequence........................................................................................................4-2
4.3 Example Program .................................................................................................................. 4-4
4.4 Numerical Entries................................................................................................................... 4-7
4.5 Logical Expression Evaluation...............................................................................................4-7
4.6 Flags ......................................................................................................................................4-8
4.7 Parameter Types ................................................................................................................... 4-9
4.8 Program Access to Data Tables.......................................................................................... 4-10
5. PROGRAM DECLARATIONS ........................................................................................... 5-1
6. DATA TABLE DECLARATIONS AND OUTPUT PROCESSING INSTRUCTIONS
6.1 Data Table Declaration.......................................................................................................... 6-1
6.2 Trigger Modifiers.................................................................................................................... 6-2
6.3 Export Data Instructions......................................................................................................... 6-8
6.4 Output Processing Instructions............................................................................................ 6-11
7. MEASUREMENT INSTRUCTIONS
7.1 Voltage Measurements.......................................................................................................... 7-3
7.2 Thermocouple Measurements............................................................................................... 7-3
7.3 Half Bridges............................................................................................................................ 7-5
7.4 Full Bridges............................................................................................................................ 7-8
7.5 Current Excitation ................................................................................................................ 7-11
7.6 Excitation/Continuous Analog Output.................................................................................. 7-13
7.7 Self Measurements.............................................................................................................. 7-15
7.8 Digital I/O ............................................................................................................................. 7-19
7.9 Peripheral Devices...............................................................................................................7-29
8. PROCESSING AND MATH INSTRUCTIONS............................................................... 8-1
9. PROGRAM CONTROL INSTRUCTIONS....................................................................... 9-1
APPENDIX
A. CR5000 STATUS TABLE....................................................................................................A-1
INDEX ......................................................................................................................................... INDEX-1
ii
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.
19 20
17 18
15 16
13 14
11 12
910
56
34
12
SE
2
1
HL
HL
HL
DIFF
25 26
23 24
21 22
SE
12
11
H L
H L
H L
DIFF
VX1
VX3
VX2
VX4
G
C6
C5
C7
C8
G
CONTROL I/O
POWER
Logan, Utah
CR5000 MICROLOGGER
78
4
3
HL
27 28
14
13
HL
CAO1
CAO2
IX1
IX2
>2.0V
G
<0.8V
5V
5V
UP
7
6
5
HL
HL
HL
33 34
31 32
29 30
17
16
15
H L
HL
HL
CONTRO
IX3
IX4
IXR
P1
P1
C1C2C3
G
SDI-12
12V
G
SDM-C1
SDM-C2
SDM-C3
G
12V
POWER OUT
'
,
_
A B C
D E F
Hm
PgUp
1
2
G H I
J K L
M N O
Graph/
char
4
5
P R S
T U V
W X Y
End
PgDn
7
8
- + (
* / )
< = >
Del
Ins
ESC
0
SN:
3
6
9
HL
35 36
H L
G
8
18
L I/O
C4
SW-12
SW-12
CURSOR
ALPHA
SHIFT
Spc Cap
BKSPC
$ Q Z
ENTER
HL
37 38
H L
G
G
POWER IN
11 - 16 VDC
9
19
CAUTION
DC ONLY
12V
G
12V
MADE IN USA
10
HL
CS I/O
39 40
20
H L
RS-232
COMPUTER
(OPTICALLY ISOLATED)
GROUND
LUG
pc card
status
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
OV-1
CR5000 Overview
t
SWITCHED
VOLTAGE
EXCITATION
(VX)
Excite
BrFull
BrFull6w
BrHalf
BrHalf3W
BrHalf4W
12
1
HL
21
11
HL
VX1
34
2
HL
23 24
22
12
HL
VX2
VX3
SE
DIFF
SE
DIFF
CONTINUOUS ANALOG
OUTPUTS (CAO)
ExciteCAO
SWITCHED CURRENT
EXCITATION (IX)
ExciteI
Resistance
56
78
910
3
4
HL
HL
25 26
27 28
13
14
HL
HL
VX4
CAO1
CAO2
IX1
IX2
IX3
5
HL
29 30
15
HL
IX4
11 12
6
HL
31 32
16
HL
IXR
P1
P2
13 14
7
HL
33 34
17
HL
PULSE INPUTS
PulseCount
PulseCountRese
15 16
17 18
8
HL
HL
35 36
37 38
18
HL
HL
CONTROL I/O
C1C2C3
C4
CONTROL I/O
PortGet
PortSet
ReadIO
TimerIO
WriteIO
19 20
9
10
HL
39 40
19
20
HL
COMPUTER RS-232
CS I/O
(OPTICALLY ISOLATED)
ANALOG INPUTS
Voltage
VoltDiff
VoltSE
Thermocouple
TCDiff
TCSE
Bridge measurements
(use VX)
BrFull
BrFull6W
BrHalf
BrHalf3W
BrHalf4W
Others
Resistance
PanelTemp
PeriodAvg
AM25T
SIGNAL
GROUND (
FOR
Analog
Pulse
Excitation
CS I/O
DSP4 (Data Tables and Output)
),
GC5C6C7C8G>2.0VG>0.8V5V5VGSDI-12
CONTROL I/O POWER
Logan, U
CR5000 MICROLOGGER
POWER UP
PowerOff
(program
control)
UP
tah
SDI-12 12 V
SDM CONNECTIONS
CS7500
CSAT3
SDMINT8
SDMSpeed
SDMTrigger
12VGSDM-C1
SDM-C2
SDM-C3G12VGSW-12
POWER OUT
'
_
,
A B C
Hm
1
G H I
J K L
Graph/
char
4
P R S
T U V
End
7
- + (
Del
SN:
SW-12
G
CAUTION
DC ONLY
G12V
POWER IN
11 - 16 VDC
GROUND
LUG
pc card
status
RS-232
CHARGER INPUT
GROUND LUG
D E F
CURSOR
PgUp
M N O
W X Y
PgDn
< = >
ESC
3
6
9
ALPHA
SHIFT
Spc Cap
BKSPC
$ Q Z
ENTER
POWER IN
POWER GROUND (G),
FOR
5V
2
5
8
* / )
Ins
0
SW-12
12V
MADE IN USA
PCMCIA PC CARD
CardOut (Data Tables
and Output)
SWITCHED 12 VOLTS SW-12
PortSet
SW12
OV-2
FIGURE OV1-2. CR5000 Panel and Associated Instructions.
OV1.1.2 Signal Grounds ( )
The Signal Grounds ( ) should be used as the reference for Single-ended
Analog inputs, Excitation returns, and sensor shield wires.
Signal returns from the CAO and Pulse channels should use the
located on the CAO and Pulse terminal strip to minimize current flow through
grounds on the analog terminal strips.
the
OV1.1.3 Power Grounds (G)
The Power Grounds (G) should be used as the returns for the 5V, SW12, 12V,
and C1-C8 outputs. Use of the G grounds for these outputs with potentially
large currents will minimize current flow through the analog section, which
can cause Single-ended voltage measurement errors.
OV1.1.4 Ground Lug
The large ground lug is used to connect a heavy gage wire to earth ground. A
good earth connection is necessary fix the ground potential of the datalogger
and to send to earth transients that come in on either the G or
are shunted to ground via the spark gaps protecting other inputs.
CR5000 Overview
terminals
terminals or
OV1.1.5 Power In
The G and 12V terminals on the unplugable Power In connector are for
connecting power from an external battery to the CR5000. These are the only
terminals that can be used to input battery power; the other 12V and SW-12V
terminals are out only. Power from this input will not charge internal CR5000
batteries. Power to charge the internal batteries (17-28 VDC or 18 VRMS AC)
must be connected to the charger input on the side of the LA battery back.
OV1.1.6 Switched 12 Volts SW-12
The SW-12 terminals provide an unregulated 12 volts that can be switched on
and off under program control.
OV1.1.7 Switched Voltage Excitation (VX)
Four switched excitation channels provide precision programmable voltages
within the ±5 Volt range for bridge measurements. Each analog output will
provide up to 50 mA between ±5 V.
OV1.1.8 Switched Current Excitation (IX)
Four Switched Current Excitation channels provide precision current
excitations programmable within ±2.5 mA for resistance or bridge
measurements.
OV1.1.9 Continuous Analog Outputs (CAO)
Two Continuous Analog Outputs (CAO) with individual outputs under
program control for proportional control (e.g., PID algorithm) and waveform
generation. Each analog output will provide up to 15 mA between ±5 V.
OV-3
CR5000 Overview
OV1.1.10 Control I/O
OV1.1.11 Pulse Inputs
OV1.1.12 Power Up
There are 8 digital Input/Output channels (0 V low, 5 V high) for frequency
measurement, digital control, and triggering.
Two Pulse input channels can count pulses from high-level (5 V square wave),
switch closure, or low-level A/C signals.
The CR5000 allows shutting off power under program control. The Power Up
inputs allow an external signal to awaken the CR5000 from a powered down
state (PowerOff, Section 9). When the CR5000 is in this power off state the
ON Off switch is in the on position but the CR5000 is off. If the "<0.5 " input
is switched to ground or if the ">2" input has a voltage greater than 2 volts
applied, the CR5000 will awake, load and run the “run on power-up” program.
If the "< 0.5" input continues to be held at ground while the CR5000 is
powered on and goes through its 2-5 second initialization sequence, the
CR5000 will not run “run on power-up” program.
OV1.1.13 SDM Connections
The Synchronous Device for Measurement (SDM) connections C1,C2, and C3
along with the adjacent 12 volts and ground terminals are used to connect
SDM sensors and peripherals.
OV1.2 Communication and Data Storage
OV1.2.1 PCMCIA PC Card
One slot for a Type I/II/III PCMCIA card. The keyboard display is used to
check card status. The card must be powered down before removing it. The
card will be reactivated if not removed.
CAUTION
OV1.2.2 CS I/O
OV1.2.3 Computer RS-232
Removing a card while it is active can cause garbled data
and can actually damage the card. Do not switch off the
CR5000 power while the card is present and active.
A 9-pin serial I/O port supports CSI peripherals.
OV-4
RS-232 Port
OV1.3 Power Supply and AC Adapter
The CR5000 has two base options the low profile without any power supply
and the lead acid battery power supply base. The low profile base requires an
external DC power source connected to the Power In terminal on the panel.
The battery base has a 7 amp hour battery with built in charging regulator and
includes an AC adapter for use where 120 VAC is available (18 VAC RMS
output). Charging power can also come from a 17-28 VDC input such as a
solar panel. The DCDC18R is available for stepping the voltage up from a
nominal 12 volt source (e.g., vehicle power supply) to the DC voltage required
for charging the internal battery.
OV2. Memory and Programming Concepts
OV2.1 Memory
The CR5000 has 2MB SRAM and 1MB Flash EEPROM. The operating
system and user programs are stored in the flash EEPROM. The memory that
is not used by the operating system and program is available for data storage.
The size of available memory may be seen in the status file. Additional data
storage is available by using a PCMCIA card in the built in card slot.
CR5000 Overview
OV2.2 Measurements, Processing, Data Storage
The CR5000 divides a program into two tasks. The measurement task
manipulates the measurement and control hardware on a rigidly timed
sequence. The processing task processes and stores the resulting
measurements and makes the decisions to actuate controls.
The measurement task stores raw Analog to Digital Converter (ADC) data
directly into memory. As soon as the data from a scan is in memory, the
processing task starts. There are at least two buffers allocated for this raw
ADC data (more under program control), thus the buffer from one scan can be
processed while the measurement task is filling another.
When a program is compiled, the measurement tasks are separated from the
processing tasks. When the program runs, the measurement tasks are
performed at a precise rate, ensuring that the measurement timing is exact and
invariant.
Processing Task: Measurement Task:
Digital I/O task
Read and writes to digital I/O ports
(ReadI/O, WriteI/O)
Processes measurements
Determines controls (port states) to set next scan
Stores data
Analog measurement and excitation sequence and
timing
Reads Pulse Counters
Reads Control Ports (GetPort)
Sets control ports (SetPort)
OV-5
CR5000 Overview
OV2.3 Data Tables
The CR5000 can store individual measurements or it may use its extensive
processing capabilities to calculate averages, maxima, minima, histogams,
FFTs, etc., on periodic or conditional intervals. Data are stored in tables such
as listed in Table OV2-1. The values to output are selected when running the
program generator or when writing a datalogger program directly.
Table OV2-1. Typical Data Table
TOA4 StnName Temp
TIMESTAMP RECORD RefTemp_Avg TC_Avg(1) TC_Avg(2) TC_Avg(3) TC_Avg(4) TC_Avg(5) TC_Avg(6)
TS RN degC degC degC degC degC degC degC
Avg Avg Avg Avg Avg Avg Avg
1995-02-16 15:15:04.61 278822 31.08 24.23 25.12 26.8 24.14 24.47 23.76
1995-02-16 15:15:04.62 278823 31.07 24.23 25.13 26.82 24.15 24.45 23.8
1995-02-16 15:15:04.63 278824 31.07 24.2 25.09 26.8 24.11 24.45 23.75
1995-02-16 15:15:04.64 278825 31.07 24.21 25.1 26.77 24.13 24.39 23.76
OV3. PC9000 Application Software
PC9000 is a Windows™ application for use with the CR5000. The software
supports CR5000 program generation, real-time display of datalogger
measurements, graphing, and retrieval of data files.
OV3.1 Hardware and Software Requirements
The following computer resources are necessary:
• IBM PC, Portable or Desktop
• 8 Meg of Ram
• VGA Monitor
• Windows 95 or newer
• 30 Meg of Hard Drive Space for software
• 40 Meg of Hard Drive Space for data
• RS232 Serial Port
OV-6
The following computer resources are recommended:
• 16 Meg of Ram
• 33 MHz 486 or faster
• Mouse
OV3.2 PC9000 Installation
To install the PC9000 Software:
• Start Microsoft Windows
• Insert diskette 1 (marked 1 of 2) in a disk drive.
• From the Program Manager, select F
• Type (disk drive):\setup and press Enter e.g. a:\setup<Enter>
• The setup routine will prompt for disk 2.
ile menu and choose Run
You may use the default directory of PC9000 or install the software in a
different directory. The directory will be created for you.
To abort the installation, type Ctrl-C or Break at any time.
OV3.3 PC9000 Software Overview
This overview points out the main PC9000 functions and where to find them.
PC9000 has extensive on-line help to guide the user in its operation, run
PC9000 to get the details. A CR5000 is not necessary to try out the
programming and real time display options; a demo uses canned data for
viewing. Without a CR5000, there are no communications with the
datalogger; operations such as downloading programs and retrieving data will
not function.
Figures OV3-1 and OV3-2 show the main PC9000 menus. The primary
functions of PC9000 are accessed from the File, Comm, Realtime, and
Analysis selections on the main menu (Figure OV3-1).
CR5000 Overview
OV-7
CR5000 Overview
File Edit Realtime Analysis Tools Collect Display Windows Help
CommLink
Alarms List . . .
ield Monitor . . .
F
Virtual M
Virtual O
-Y Plotter . . .
X
istogram . . .
H
Fast Fourier T
Level Crossing Histogram . . .
et/Set Variable . . .
G
Display Data Graph 1 . . .
Display Data Graph 2
ID2000 . . . Ctrl + I
eter . . .
'Scope . . .
ransform . . .
Select S
Select P
Logger C
Logger Status . . .
D
ownload . . .
Save and Download
Logger F
Di
agnostics
Data Retrieval . . .
cheduled Data Retrieval . . .
S
eries Linked Station . . .
arallel Linked Station . . .
lock . . .
iles . . .
. . .
Realtime Display
& Graphing
Display Data in Tables Collected From CR5000.
Graphing requires no special processing of the data
and provides rapid feedback to the operator.
Collect data from CR5000
PC to CR5000
communications.
CR9000 Program Generator
000 Program Generator
CR5
CR9000 Program Editor . . .
CR5000 Program Editor . . .
Open W
Open Data Table I
Open D
Convert Binary to ASCII File . . .
P
Printer Setup . . .
D
File Manager . . .
E
Exit PC9000
iring Diagram . . .
ata File . . .
rint . . .
OS Shell . . .
xplorer . . .
nfo File . . .
Menu-driven Program Generation.
Direct Editing of Program
View/Edit Wiring Diagram & DataTable
Information (Created by Program Generator)
View Data Collected from CR5000
OV3-1. PC9000 Primary Functions
OV-8
CR5000 Overview
File Edit Realtime Analysis Tools Collect Display Windows Help
Undo Ctrl + Z
Date & Time
Select All
Strip Remarks and Spaces Ctrl + S
Cut Ctrl + X
Copy Ctrl + C
Paste Ctrl + V
Delete
Delete Line Ctrl + Y
Wrap Text Ctrl + W
Go To Line . . .
Find Ctrl + F
Replace Ctrl + R
OV3-2. PC9000 Editing, Help, and User Preferences
Editing Options for
Active Windows
Colors . . .
Fonts . . .
Defaults . . .
Change fonts
and/or Colors for
Active Windows.
Tile Horizontal . . .
Tile Vertical . . .
Cascade . . .
Arrange Icons . . .
ork Area Setup . . .
W
List of Windows
PC9000 Help Contents . . .
earch PC9000 Help . . .
S
CRBasic Help Contents . . .
Search CR
Obtaining Technical Support . . .
A
bout PC9000 . . .
Software Versions . . .
Basic Help . . .
OV3.3.1 File
OV3.3.2 Edit
Program Generator
Guides the user through a series of menus to configure the measurement types:
thermocouple, voltage, bridge, pulse counting, frequency, and others. Creates
a CR5000 program, wiring diagram, output table, description, and
configuration file.
Program Editor
Create programs directly or edit those created by the program generator or
retrieved from the CR5000. Provides context-sensitive help for the CR5000's
BASIC-like language.
REALTIME
Virtual Meter
Updates up to five displays simultaneously. Choices include analog meter,
horizontal and vertical bars, independent scaling/offset, multiple alarms, and
rapid on-site calibration of sensors
OV-9
CR5000 Overview
OV3.3.3 Analysis
OV3.3.4 Tools
OV3.3.5 Collect
Virtual Oscilloscope
Displays up to six channels. Time base variable from milliseconds to hours.
X-Y Plotter
Allows comparison of any two measurements in real time.
Data Graphing
Displays up to 16 fields simultaneously as strip charts or two multi-charts with
up to 8 traces each. Includes 2D/3D bars, line, log/linear, area, and scatter.
Line statistics available for max/min, best fit, mean, and standard deviation.
Handles files of unlimited size. Historical graphing requires no special
processing of the data and provides rapid feedback to the operator.
Control and Communications
Supports PC to CR5000 communications: clock read/set, status read, program
download, and program retrieval.
OV3.3.6 Display
OV3.3.7 Windows
OV3.3.8 Help
Collect data from CR5000 data tables
Configure the font and color scheme in an active window.
Size and arrange windows.
On-line help for PC9000 software.
OV-10
OV4. Keyboard Display
CR5000 Overview
Power Up Screen
Press any key
CAMPBELL
SCIENTIFIC
CR5000 Datalogger
06/18/2000, 18:24:35
CPU: TRIG.CR5
Running.
for Main Menu
(except < >)
Data
Run/Stop Program
File
Status
Configure, Settings
Adjust contrast with < >
< lighter darker >
Real Time Tables
Real Time Custom
Final Storage Data
Reset Data Tables
Graph Setup
New
Edit
Copy
Delete
Run Options
Directory
Format
ROM Version : xxxx
OS Version : xxxx
OS Date : xxxx
OS Signature
Serial Number
Rev Board
Station Name : xxxx
Program Name : xxxxx
StartTime : xxxxx
Run Signature
DLD Signature
Battery : xxxx
Set Time/Date
Settings
Display
OV-11
CR5000 Overview
OV4.1 Data Display
Data
Run/Stop Program
File
Status
Configure, Settings
Curs or to Data
and Press
Enter
Real Time Tables
Real Time Custom
Final Storage Data
Reset Data Table
Graph Setup
List of Data Tables created by
active program
List of Data Tables created by
active program
List of Data Tables created by
active program
OV-12
All Tables
List of Data Tables created by
active program
Graph Type: Scope
Scaler: Manual
Upper: 0.000000
Lower: 0.000000
Display Val Off
Display Max Off
Display Mi n Off
OV4.1.1 Real Time Tables
List of Data Tables created by
active program. For Example,
Table1
Temps
Public
Cursor to desired
Table and press
Enter
Tref : 23.0234
TCTemp(1) : 19.6243
TCTemp(2) : 19.3429
TCTemp(3) : 21.2003
TCTemp(3) :
Flag(1) : -1.0000
Flag(2) : 0.00000
Flag(3) : 0.00000
Flag(4) : 0.00000
Public Table values
can be changed.
Cursor to value and
press Enter to edit
value.
CR5000 Overview
Tref : 23.0234
TCTemp(1) : 19.6243
TCTemp(2) : 19.3429
TCTemp(3) : 21.2003
TCTemp(3)
2
Flag(1) : -1.0000
Flag(2) : 0.00000
Flag(3) : 0.00000
Flag(4) : 0.00000
Press Graph/ Char
for Graph of
selected field
30.0 22.35
_____
___ ____
__
20.00
New values are displayed as they
are stored.
Scaler Manual
Press Ins for
Graph Setup
Upper: 30.000000
Lower: 20.000000
Display Val On
Display Max On
Display Min On
Graph Type Roll
OV-13
CR5000 Overview
)
OV4.1.2 Setting up Real Time Custom Display
List of Data Tables created by
active program. For Example,
Table1
Temps
Public
Cursor to desired
Table and Press
Enter
Tref
TCTemp(1)
TCTemp(2)
TCTemp(3)
TCTemp(3
Flag(1)
Flag(2)
Flag(3)
Flag(4)
Cursor to position for next value
and Press Enter
Cursor to desired
Field and Press
Enter
TCTemp(3) : 24.9496
New values are displayed as they
are stored.
:
:
:
:
:
:
:
OV-14
OV4.1.3 Final Storage Tables
_
List of Data Tables created by
active program. For Example:
Table1
Temps
CR5000 Overview
Cursor to desired
Table and Press
Enter
Use Hm (oldest), End (newest),
PgUp (older) , PgDn (newer),
←, →, ↑
, and ↓ to move around
in data table.
TimeStamp Record Tref TC(1) TC(2) TC(3)
"2000-01-03 00:12:38" 0 21.934 22.8419
"2000-01-03 00:12:39" 1 24.1242 21.8619 21.9173 22.8364
"2000-01-03 00:12:40" 2 24.1242 21.8786 21.9229 22.8364
"2000-01-03 00:12:41" 3
"2000-01-03 00:12:42" 4
"2000-01-03 00:12:43" 5
"2000-01-03 00:12:44" 6
"2000-01-03 00:12:45" 7
"2000-01-03 00:12:46" 8
5 :2000-01-03 00:12:43
Tref TC(1)
24.1242 : 21.8786
24.1242 : 21.8786
24.1242 : 21.8675
21.8675
24.1242 : 21.8675
24.1242 : 21.8675
24.1242 : 21.8398
21.9173 22.8419
21.9173 22.8253
21.9118 22.8364
21.9173 22.8087
21.9173 22.8142
21.9395 22.8253
"2000-01-03 00:12:47" 9 24.1242 21.8176 21.9118 22.8308
"2000-01-03 00:12:48" 10 24.1242 21.8342 21.945 22.8364
"2000-01-03 00:12:49" 11 24.1242 21.8453 21.9506 22.8364
Press Ins for Jump To screen.
Go to Record:
Press Graph/ Char for
Graph of selected field.
←, →
Use
, PgUp, PgDn
to move cursor and
window of data graphed.
5
press Ins to edit
Table Size:
1000
Current Record:
759
30.0 21.87
______
______ _______
____ ___ ____
__
20.00
Press Ins for
Graph Setup
Scaler Manual
Upper: 30.000000
Lower: 20.000000
Display Val On
Display Max On
Display Min On
Graph Type Roll
OV-15
CR5000 Overview
OV4.2 Run/Stop Program
PCCard Display
Data
Run/Stop Program
File
Status
Configure, S e ttin g s
Cursor to
PCCard and
Press Enter
Remove Card
Forma t Card
Table Status
Card Status
CPU:
List of Programs
No Prog ra m
CRD:
List of Programs
You may now
remov e the Card.
CR500 0 close s ta ble s first.
All Card Data
Will be Lost!
Proceed?
Yes
No
List of Data Ta b les on card
created by active program
PC Card Status:
Battery OK
5Volt Card
WP Disabled
OV-16
OV4.3 File Display
Data
Run/Stop Program
File
Status
Configure, Settings
Curs o r to
File and
Press Enter
New
Edit
Copy
Delete
Run Options
Directory
Format
CR5000 Overview
New F i le Name:
CPU: .CR5
CRD: .CR5
CPU:
CRD:
Copy
From
To
Execute
List of files on
CPU or Card.
CPU: Program
No Program
CRD: Program
CPU:
All programs and other files
will be lost!
Proceed?
Yes List of Programs
No
OV-17
CR5000 Overview
D
p
)
p
OV4.3.1 File: Edit
List of Program files on CPU: or
CRD: For Example:
CPU:
TCTEMP.CR5 0
RACE.CR5 0
Cursor to desired Program
and Press Enter
The Program Editor in PC9000 is recommended for writing and editing
datalogger programs. Changes in the field can be made with the keyboard
display.
Save Changes?
Yes
No
ESC
CR5000
' TCTemp.CR5
Public TREF,TC(3),FLAG(8)
D ataTable (Temps,1,1000)
Sample (1,TREF,IEEE4)
Sample (3,TC(),IEEE4)
Edit Directly or Cursor to first
character of line and Press
Enter
ENTER
Edit Instruction
Blank Line
Create Block
DataTable (Temps,1,1000)
DataTable (Temps,1,1000
Sample (1,TREF,IEEE4)
Sample (3,TC(),IEEE4)
EndTable
Press Ins
Edit Instruction parameters with
Cursor down to
highlight desired
block and press
Enter
INSERT
Instruction
Function
Blank Line
Block
Insert Off
arameter names and some pick lists:
DataTable
TableName
> Temps
TrigVar
1
Size
1000
Insert blank line
Block Commands
Copy
Cut
Delete
BeginProg
Scan(1,sec,3,0)
To insert a block created by this
operation, cursor to desired place in
rogram and press Ins.
OV-18
OV4.4 Configure Display
Data
Run/Stop Program
File
Status
Configure, Settings
Cursor to
Configure,
Settings and
Press Enter
Set Tim e /Date
Settings
Display
CR5000 Overview
05/24/2000, 15:10:40
Year 2000
Month 5
Day 24
Hour 15
Minute 10
Set
Cancel
Security Enable
RS-23 2 Time Out: No
CR5000 Off
Light Dark
<- * ->
Enter Passwords:
Level 1:
Level 2:
Level 3:
click
Enter
Num
Password
Turn off dis play
Back Light
Contrast Adjust
Display Time O ut: No, Ye s (if yes)
Time out (min) 1
OV-19
CR5000 Overview
OV5. Specifications
Electrical specifications are valid over a -25° to +50°C range unless otherwise specified;testing over -40° to +85°C available as
an option, excludes batteries. Non-condensing environment required. Yearly calibrations are recommended to maintain electrical specifications.
PROGRAM EXECUTION RATE
The CR5000 can measure one channel and store the
result in 500 µs; all 40 SE* channels can be measured
in 8 ms (5 kHz aggregate rate).
ANALOG INPUTS
DESCRIPTION: 20 DF* or 40 SE, individually
configured. Channel expansion provided through
AM16/32, AM416, and AM25T Multiplexers.
RANGES, RESOLUTION, AND TYPICAL INPUT
NOISE: Basic Resolution (Basic Res) is the A/D
resolution of a single conversion. Resolution of
DFM* with input reversal is half the Basic Res.
Noise values are for DFM with input reversal;noise
is greater with SEM.*
Input Basic 0 Int. 250 µs Int. 20/16.7 ms Int.
Rng (mV) Res (µV) (µV RMS) (µV RMS) (µV RMS)
±5000 167 70 60 30
±1000 33.3 30 12 6
±200 6.67 8 2.4 1.2
±50 1.67 3.0 0.8 0.3
±20 0.67 1.8 0.5 0.2
ACCURACY
MINIMUM TIME BETWEEN MEASUREMENTS:
COMMON MODE RANGE: ±5 V
DC COMMON MODE REJECTION: >100 dB with
NORMAL MODE REJECTION: 70 dB @ 60 Hz
SUSTAINED INPUT VOLTAGE WITHOUT DAMAGE:
INPUT CURRENT: ±2 nA typ., ±10 nA max. @ 50°C
INPUT RESISTANCE: 20 GΩ typical
ACCURACY OF INTERNAL THERMOCOUPLE
REFERENCE JUNCTION:
†
:
±(0.05% of Reading + Offset) 0° to 40°C
±(0.075% of Reading + Offset) -25° to 50°C
±(0.10% of Reading + Offset) -40° to 85°C
Offset for DFM w/input reversal =
Offset for DFM w/o input reversal =
Offset for SEM = 2Basic Res + 10 µV
Zero Integration: 125 µs
250 µs Integration: 475 µs
16.7 ms Integration: 19.9 ms
20 ms Integration: 23.2 ms
input reversal (>80 dB without input reversal)
when using 60 Hz rejection
±16 Vdc
±0.25°C, 0° to 40°C
±0.5°C, -25° to 50°C
±0.7°C, -40° to 85°C
Basic Res +1 µV
2Basic Res + 2 µV
ANALOG OUTPUTS
DESCRIPTION: 4 switched voltage; 4 switched cur-
rent; 2 continuous voltage; switched outputs active
only during measurements, one at a time.
RANGE: Voltage (current) outputs programmable
between ±5 V (±2.5 mA)
RESOLUTION: 1.2 mV (0.6 µA) for voltage (current)
outputs
ACCURACY: ±10 mV (±10 µA) for voltage (current)
outputs
CURRENT SOURCING: 50 mA for switched voltage;
15 mA for continuous
CURRENT SINKING: 50 mA for switched voltage;
5 mA for continuous (15 mA w/selectable option)
COMPLIANCE VOLTAGE: ±5 V for switched current
excitation
RESISTANCE MEASUREMENTS
Provides voltage ratio measurements of 4- and 6-wire
full bridges, and 2-, 3-, 4-wire half bridges. Direct
resistance measurements available with current excitation. Dual-polarity excitation is recommended.
VOLTAGE RATIO ACCURACY
excitation reversal and an excitation voltage of at
least 2000 mV.
±(0.04% Reading + Basic Res/4) 0° to 40°C
±(0.05% Reading + Basic Res/4) -25° to 50°C
±(0.06% Reading + Basic Res/4) -40° to 85°C
ACCURACY
†
WITH CURRENT EXCITATION:
Assumes input and excitation reversal, and an
excitation current, I
±(0.075% Reading + Basic Res/2I
±(0.10% Reading + Basic Res/2I
±(0.12% Reading + Basic Res/2I
†
: Assumes input and
, of at least 1 mA.
x
x
x
) 0° to 40°C
x
) -25° to 50°C
) -40° to 85°C
PERIOD AVERAGING MEASUREMENTS
DESCRIPTION: The average period for a single
cycle is determined by measuring the duration of a
specified number of cycles. Any of the 40 SE
analog inputs can be used; signal attenuation and
ac coupling may be required.
INPUT FREQUENCY RANGE:
Input Signal (peak to peak) Min. Max.
Rng (mV) Min. Max.
±5000 600 mV 10 V 2.5 µs 200 kHz
±1000 100 mV 2.0 V 5.0 µs 100 kHz
±200 4 mV 2.0 V 25 µs 20 kHz
1
Maximum signals must be centered around
datalogger ground.
RESOLUTION: 70 ns/number of cycles measured
ACCURACY: ±(0.03% of Reading + Resolution)
1
Pulse W. Freq
PULSE COUNTERS
DESCRIPTION: Two 16-bit inputs selectable for switch
closure, high frequency pulse, or low-level ac.
MAXIMUM COUNT: 4 x 10
SWITCH CLOSURE MODE:
Minimum Switch Closed Time: 5 ms
Minimum Switch Open Time: 6 ms
Maximum Bounce Time: 1 ms open without
being counted.
HIGH FREQUENCY PULSE MODE:
Maximum Input Frequency: 400 kHz
Maximum Input Voltage: ±20 V
Voltage Thresholds: Count upon transition
from below 1.5 V to above 3.5 V at low frequen-
cies. Larger input transitions are required at high
frequencies because of 1.2 µs time constant filter.
LOW LEVEL AC MODE:
Internal ac coupling removes dc offsets up to
±0.5 V .
Input Hysteresis: 15 mV
Maximum ac Input Voltage: ±20 V
Minimum ac Input Voltage (sine wave):
(mV RMS) Range (Hz)
20 1.0 to 1000
200 0.5 to 10,000
1000 0.3 to 16,000
9
counts per scan
DIGITAL I/O PORTS
DESCRIPTION: 8 por ts selectable as binar y inputs or
control outputs.
OUTPUT VOLTAGES (no load):high 5.0 V ±0.1 V;
low < 0.1 V
OUTPUT RESISTANCE: 330 Ω
INPUT STATE: high 3.0 to 5.3 V; low -0.3 to 0.8 V
INPUT RESISTANCE: 100 kΩ
EMI and ESD PROTECTION
The CR5000 is encased in metal and incorporates
EMI filtering on all inputs and outputs. Gas discharge
tubes provide robust ESD protection on all terminal
block inputs and outputs. The following European
standards apply.
EMC tested and conforms to BS EN61326:1998.
Details of performance criteria applied are available
upon request.
Warning: This is a Class A product. In a domestic
environment this product may cause radio interference
in which case the user may be required to correct the
interference at the user’s own expense.
CPU AND INTERFACE
PROCESSOR: Hitachi SH7034
MEMORY: Battery-backed SRAM provides 2 Mbytes
for data and operating system use with
128 kbytes reserved for program storage.
Expanded data storage with PCMCIA type I,
type II, or type III card.
DISPLAY: 8-line-by-21 character alphanumeric or
128 x 64 pixel graphic LCD display w/backlight.
SERIAL INTERFACES: Optically isolated RS-232
9-pin interface for computer or modem. CSI/O
9-pin interface for peripherals such as CSI
modems.
BAUD RATES: Selectable from 1,200 to 115,200 bps.
ASCII protocol is eight data bits, one start bit, one
stop bit, no parity.
CLOCK ACCURACY: ±1 minute per month
SYSTEM POWER REQUIREMENTS
VOLTAGE:11 to 16 Vdc
TYPICAL CURRENT DRAIN: 400 µA software power
off; 1.5 mA sleep mode; 4.5 mA at 1 Hz (200 mA
at 5 kHz) sample rate.
INTERNAL BATTERIES: 7 Ahr rechargeable base
(optional); 1650 mAhr lithium batter y for clock and
SRAM backup, 10 years of service typical, less at
high temperatures.
EXTERNAL BATTERIES: 11 to 16 Vdc; reverse
polarity protected.
PHYSICAL SPECIFICATIONS
SIZE: 9.8” x 8.3” x 4.5” (24.7 cm x 21.0 cm x 11.4 cm)
WEIGHT: 4.5 lbs (2.0 kg) with low-profile base;
Terminal strips extend 0.4” (1.0 cm).
12.2 lbs (5.5 kg) with rechargeable base
WARRANTY
Three years against defects in materials and
workmanship.
*SE(M): Single-Ended (Measurement)
*DF(M): Differential (Measurement)
†
Sensor and measurement noise not included.
We recommend that you confirm system
configuration and critical specifications with
Campbell Scientific before purchase.
OV-20
Section 1. Installation and Maintenance
1.1 Protection from the Environment
The normal environmental variables of concern are temperature and moisture.
The standard CR5000 is designed to operate reliably from -25 to +50°C (-40°C
to +85°C, optional) in noncondensing humidity. When humidity tolerances are
exceeded, damage to IC chips, microprocessor failure, and/or measurement
inaccuracies due to condensation on the various PC board runners may result.
Effective humidity control is the responsibility of the user.
The CR5000 is not hermetically sealed. Two half unit packets of DESI PAK
desiccant are located by the batteries. A dry package weighs approximately 19
grams and will absorb a maximum of six grams of water at 40% humidity and
11 grams at 80%. Desiccant packets can be dried out by placing the packets in
an oven at 120°C for 16 hours (desiccant only, not the CR5000).
Campbell Scientific offers two enclosures for housing a CR5000 and
peripherals. The fiberglass enclosures are classified as NEMA 4X (water-tight,
dust-tight, corrosion-resistant, indoor and outdoor use). A 1.25" diameter
entry/exit port is located at the bottom of the enclosure for routing cables and
wires. The enclosure door can be fastened with the hasp for easy access, or
with the two supplied screws for more p e r m anent applications. The white
plastic inserts at the corners of the enclosure must be removed to insert the
screws. Both enclosures are white for reflecting solar radiation, thus reducing
the internal enclosure temperature.
The Model ENC 12/14 fiberglass enclosure houses the CR5000 and one or
more peripherals. Inside dimensions of the ENC 12/14 are 14"x12"x5.5",
outside dimensions are 18"x13.5"x8.13" (with brackets); weight is 11.16 lbs.
The Model ENC 16/18 fiberglass enclosure houses the CR5000 and several
peripherals. Inside dimensions of the ENC 16/18 are 18"x16"x8¾", outside
dimensions are 18½"x18¾"x10½" (with brackets); weight is 18 lbs.
1.2 Power Requirements
The CR5000 operates at a nominal 12 VDC. Below 11.0 V or above 16 volts
the CR5000 does not operate properly.
The CR5000 is diode protected against accidental reversal of the positive and
ground leads from the battery. Input voltages in excess of 18 V may damage
the CR5000 and/or power supply. A transzorb provides transient protection by
limiting voltage at approximately 20 V.
System operating time for the batteries can be determined by dividing the battery
capacity (amp-hours) by the average system current drain. The CR5000
typically draws 1.5 mA in the sleep state (with display off), 4.5 mA with a 1 Hz
sample rate, and 200 mA with a 5 kHz sample rate.
1-1
Section 1. Installation and Maintenance
1.3 CR5000 Power Supplies
The CR5000 may be purchased with either a rechargeable lead acid battery or
with a low profile case without a battery.
While the CR5000 has a wide operating temperature range (-40 to +85°C
optional), the lead acid battery base is limited to -40 to +60°C. Exceeding this
range will degrade battery capacity and lifetime and could also cause
permanent damage.
1.3.1 CR5000 Lead Acid Battery BASE
Temperature range: -40° to +60°C
Charging voltage: 17 to 24 VDC or 18 V RMS AC
NOTE
In normal operation a charging source should be connected to
the base at all times. The CR5000 stops measuring at ~11 V.
Battery life is shortened when discharged below 10.5 V.
The CR5000 includes a 12 V, 7.0 amp-hour lead acid battery, an AC
transformer (18 V RMS AC), and a temperature compensated charging circuit
with a charge indicating LED (Light Emitting Dio de). An AC transformer or
solar panel should be connected to the base at all times. The charging source
powers the CR5000 while float charging the lead acid batteries. The internal
lead acid battery powers the datalogger if the charging source is interrupted.
The lead acid battery specifications are given in Table 1.3-1.
The leads from the charging source connect to a wiring terminal plug on the
side of the base. Polarity of the leads to the connector does not matter. A
transzorb provides transient protection to the charging circuit. A sustained
input voltage in excess of 40V will cause the transzorb to limit voltage.
The red light (LED) on the base is on during charging with 17 to 24 VDC or
18 V RMS AC. The switch turns power to the CR5000 on or off. Battery
charging still occurs when the switch is o ff.
Should the lead acid batteries require replacement, consult Figure 1.3-1 for
wiring.
1-2
Section 1. Installation and Maintenance
LEAD ACID BATTERY REPLACEMENT
6V 7AH
LEAD ACID
BATTERY
++
6V 7AH
LEAD ACID
BATTERY
RED
BLACK
WHITE
--
FIGURE 1.3-1. Lead Acid Battery Wiring
Monitor the power supply using datalogger Instruction “Battery”. Incorporate
this instruction into data acquisition programs to keep track of the state of the
power supply. If the system voltage level consistently decreases through time,
some element(s) of the charging system has failed. Battery measures the
voltage at the CR5000 electronics, not the voltage of the lead acid battery. The
measured voltage will normally be about 0.3 V less than the voltage at the
internal or external 12 V input. This voltage drop is on account of a Schottkey
diode. External power sources must be disconnected from the CR5000 to
measure the actual lead acid battery voltage.
TABLE 1.3-1. CR5000 Rechargeable Battery and AC Transformer
Specifications
Lead Acid Battery
Battery Type Yuasa NP7-6
Float Life @ 25oC 3 years minimum
Capacity 7.0 amp-hour
Shelf Life, full charge 6 months
Charge Time (AC Source) 40 hr full charge, 20 hr 95% charge
Operating temperature -40°C to 60°C
AC Transformer
Input: 120 VAC, 60 Hz
Isolated Output: 18 VAC 1.2 Amp
There are inherent hazards associated with the use of sealed lead acid batteries.
Under normal operation, lead acid batteries generate a small amount of
hydrogen gas. This gaseous by-product is generally insignificant because the
hydrogen dissipates naturally before build-up to an explosive level (4%)
occurs. However, if the batteries are shorted or overcharging takes place,
hydrogen gas may be generated at a rate sufficient to create a hazard.
Campbell Scientific recommends:
1. A CR5000 equipped with standard lead acid batteries should NEVER be
used in applications requiring INTRINSICALLY SAFE equipment.
2. A lead acid battery should not be housed in a gas-tight enclosure.
1-3
Section 1. Installation and Maintenance
1.3.2 Low Profile CR5000
The low profile CR5000 option is not supplied with a battery base. See
Section 1.5 and 1.6 for external power connection considerations.
1.4 Solar Panels
Auxiliary photovoltaic power sources may be used to maintain charge on lead
acid batteries.
When selecting a solar panel, a rule-of-thumb is that on a stormy overcast day
the panel should provide enough charge to meet the system current drain
(assume 10% of average annual global radiation, kW/m
information, if available, could strongly influence the solar panel selection.
For example, local effects such as mountain shadows, fog from valley
inversion, snow, ice, leaves, birds, etc. shading the panel should be considered.
Guidelines are available from the Solar e x Corporation for solar panel selection
called "DESIGN AIDS FOR SMALL PV POWER SYSTEMS". It provid e s a
method for calculating solar panel size based on general site location and
system power requirements. If you need help in determining your system
power requirements contact Campbell Scientific's Marketing Department.
2
). Specific site
1.5 Direct Battery Connection to the CR5000 Wiring Panel
Any clean, battery backed 11 to 16 VDC supply may be connected to the 12 V
and G connector terminals on the front panel. When connecting external
power to the CR5000, first, remove the green power connector from the
CR5000 front panel. Insert the positive 12 V lead into the right-most terminal
of the green connector. Insert the ground lead in the left terminal. Double
check polarity before plugging the green connector into the panel.
Diode protection exists so that an external battery can be connected to the green
G and 12 V power input connector, without loading or charging the internal
batteries. The CR5000 will draw current from the source with the largest
voltage. When power is connected through the front panel, switch control on
the standard CR5000 power supplies is by-passed (Figure 1.7-1).
1.6 Vehicle Power Supply Connections
1.6.1 CR5000 with Battery Base
The best way to power a CR5000 with battery base from a vehicle’s 12 V
power system is to use the DCDC18R to input the power to the CR5000’s
charger input (Figure 1.6-1). With this configuration the CR5000’s batteries
are charged when the vehicle power is available. When the vehicle’s voltage is
too low or off, the CR5000 is powered from its internal batteries.
1-4
Section 1. Installation and Maintenance
19 20
17 18
15 16
13 14
11 12
910
12
SE
2
1
HL
HL
DIFF
3
HL
4
HL
5
HL
6
HL
HL
8
7
HL
78
56
34
9
HL
10
HL
23 24
21 22
SE
12
11
H L
H L
DIFF
VX1
VX3
VX2
VX4
G
C6
C5
C7
C8
G
CONTROL I/O
Logan tah
CR5000
easurement and Control System
25 26
13
H L
POWER
UP
CAO1
>2.0V
G
CAO2
<0.8V
27 28
HL
IX1
5V
ROND
CS I/O
RS-232
COPTER
(OPTICALLY ISOLATED)
L
pc card
status
DCDC1R
BOOST REGULATOR
V in
V out
(11-16)
V
G 18V G
MADE IN
USA
29 30
16
15
14
H L
HL
IX2
IX3
IX4
IXR
P1
5V
G
SDI-12
12V
G
SDM-C1
SDM-C2
A B C
m
1
L
raph
char
4
P R S
T V
End
-
Del
ns
SN
2
5
0
P1
SDM-C3
17
H L
CONTROL I/O
C1C2C3
G
12V
POWER OUT
D E
Pgp
3
N O
6
W
PgDn
ESC
18
H L
G
SW-12
CRSOR
ST
Spc Cap
BSPC
ENTER
ALPA
C4
SW-12
19
HL
G
12V
POWER N
11 - 16 VDC
CATON
DC ONL
12V
ADE N SA
H L
20
39 40
37 38
35 36
33 34
31 32
FIGURE 1.6-1. CR5000 with DCDC18R
It is also possible to use the vehicle's 12 V power system as the primary supply
for a CR5000 with a battery base (Figure 1.6-2). When a vehicle’s starting
motor is engaged, the system voltage drops considerably below the 11 volts
needed for uninterrupted datalogger function. Diodes in the CR5000 in series
with the 12 V Power In connector allow the battery base to supply the needed
voltage during motor start. The diodes also prevent the separate power
systems of the CR5000 and vehicle from attempting to charge each other.
Because this configuration does not charge the CR5000 batteries, it is not
recommended.
CR5000
Panel
+12V
G
FIGURE 1.6-2. Alternate Connect on to Vehicle Power Supply
1-5
Section 1. Installation and Maintenance
1.6.2 CR5000 with Low Profile Base (No Battery)
If a CR5000 without batteries is to be powered from the 12 Volts of a motor
vehicle, a second 12 V supply is required. When the starting motor of a
vehicle with a 12 V electrical system is engaged, the voltage drops
considerably below 11 V, which would cause the CR5000 to stop measurement
every time the vehicle is started. The second 12 V supply prevents this
malfunction. Figure 1.6-3 shows connecting the two supplies to a CR5000
without a battery base. The diodes allows the vehicle to power the CR5000
without the second supply attempting to power the vehicle.
CR5000
Panel
+12V
G
FIGURE 1.6-3. Connecting CR5000 without Battery Base to Vehicle
1.7 CR5000 GROUNDING
Grounding of the CR5000 and its peripheral devices and sensors is critical in
all applications. Proper grounding will ensure the maximum ESD
(electrostatic discharge) protection and higher measurement accuracy.
1.7.1 ESD Protection
An ESD (electrostatic discharge) can originate from several sources. However,
the most common, and by far potentially the most destructive, are primary and
secondary lightning strikes. Primary lightning strikes hit the datalogger or
sensors directly. Secondary strikes induce a voltage in power lines or sensor
wires.
The primary devices for protection against ESD are gas-discharge tubes
(GDT). All critical inputs and outputs on the CR5000 are protected with GDTs
or transient voltage suppression diodes. The GDTs fire at 150 V to allow
current to be diverted to the earth ground lug. To be effective, the earth
ground lug must be properly connected to earth (chassis) ground. As shown in
Figure 1.7-1, the power ground and signal ground are independent lines until
joined inside the CR5000.
Power Supply
1-6
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