Campbell 110PV Instruction Manual

INSTRUCTION MANUAL

110PV Surface

Copyright © 2010- 2017

Campbell Scientific, Inc.

Temperature Probe

Revision: 8/17

Guarantee







This equipment is guaranteed against defects in materials and workmanship.
We will repair or replace products which prove to be defective during the
guarantee period as detailed on your invoice, provided they are returned to us
prepaid. The guarantee will not apply to:

Equipment which has been modified or altered in any way without the
written permission of Campbell Scientific

Batteries
Any product which has been subjected to misuse, neglect, acts of God or

damage in transit.

Campbell Scientific will return guaranteed equipment by surface carrier
prepaid. Campbell Scientific will not reimburse the claimant for costs incurred

in removing and/or reinstalling equipment. This guarantee and the Company’s

obligation thereunder is in lieu of all other guarantees, expressed or implied,
including those of suitability and fitness for a particular purpose. Campbell
Scientific is not liable for consequential damage.

Please inform us before returning equipment and obtain a Repair Reference
Number whether the repair is under guarantee or not. Please state the faults as
clearly as possible, and if the product is out of the guarantee period it should
be accompanied by a purchase order. Quotations for repairs can be given on
request. It is the policy of Campbell Scientific to protect the health of its
employees and provide a safe working environment, in support of this policy a

“Declaration of Hazardous Material and Decontamination” form will be

issued for completion.

When returning equipment, the Repair Reference Number must be clearly
marked on the outside of the package. Complete the “Declaration of
Hazardous Material and Decontamination” form and ensure a completed copy
is returned with your goods. Please note your Repair may not be processed if
you do not include a copy of this form and Campbell Scientific Ltd reserves
the right to return goods at the customers’ expense.

Note that goods sent air freight are subject to Customs clearance fees which
Campbell Scientific will charge to customers. In many cases, these charges are
greater than the cost of the repair.

Campbell Scientific Ltd,

80 Hathern Road,

Shepshed, Loughborough, LE12 9GX, UK

Tel: [phone]

Fax: [phone]

Email: [e-mail]

www.campbellsci.co.uk

PLEASE READ FIRST

About this manual

Please note that this manual was originally produced by Campbell Scientific Inc. primarily for the North
American market. Some spellings, weights and measures may reflect this origin.

Some useful conversion factors:

Area: 1 in2 (square inch) = 645 mm2

Length: 1 in. (inch) = 25.4 mm

1 ft (foot) = 304.8 mm
1 yard = 0.914 m
1 mile = 1.609 km

In addition, while most of the information in the manual is correct for all countries, certain information
is specific to the North American market and so may not be applicable to European users.

Differences include the U.S standard external power supply details where some information (for
example the AC transformer input voltage) will not be applicable for British/European use. Please note,

however, that when a power supply adapter is ordered it will be suitable for use in your country.

Reference to some radio transmitters, digital cell phones and aerials may also not be applicable
according to your locality.

Some brackets, shields and enclosure options, including wiring, are not sold as standard items in the
European market; in some cases alternatives are offered. Details of the alternatives will be covered in
separate manuals.

Part numbers prefixed with a “#” symbol are special order parts for use with non-EU variants or for
special installations. Please quote the full part number with the # when ordering.

Mass: 1 oz. (ounce) = 28.35 g

1 lb (pound weight) = 0.454 kg

Pressure: 1 psi (lb/in2) = 68.95 mb

Volume: 1 UK pint = 568.3 ml

1 UK gallon = 4.546 litres
1 US gallon = 3.785 litres

Recycling information

At the end of this product’s life it should not be put in commercial or domestic refuse but
sent for recycling. Any batteries contained within the product or used during the
products life should be removed from the product and also be sent to an appropriate
recycling facility.

Campbell Scientific Ltd can advise on the recycling of the equipment and in some cases
arrange collection and the correct disposal of it, although charges may apply for some
items or territories.

For further advice or support, please contact Campbell Scientific Ltd, or your local agent.

Campbell Scientific Ltd, 80 Hathern Road, Shepshed, Loughborough, LE12 9GX, UK

Tel: [phone] Fax: [phone]

Email: [e-mail]

www.campbellsci.co.uk

Precautions

DANGER — MANY HAZARD S ARE ASSOCIATED WITH INSTALLING, USING, M AINTAINING, AND WORKING ON
OR AROUND TRIPODS, TOWERS, AND ANY ATTACHMENTS TO TRIPODS AND TOWERS SUCH AS SENSORS,
CROSSARMS, ENCLOSURES, ANTENNAS, ETC. FAILURE TO PROPERLY AND COM P LE TE LY ASS E M BLE ,
INSTALL, OPERATE, USE, AND MAINTAIN TRIPODS, TOWERS, AND ATTACHMENTS, AND FAILURE TO HEED
WARNINGS, INCREASES THE RISK OF DEATH, ACCIDENT, SERIOUS INJURY, PROPERTY DAMAGE, AND
PRODUCT FAILURE. TAKE ALL REASONABLE PRECAUTIONS TO AVOID THESE HAZARDS. CHECK WITH YOUR
ORGANIZATION'S SAFETY COORDINATOR (OR POLICY) FOR PROCEDURES AND REQUIRED PROTECTIVE
EQUIPMENT PRIOR TO PERFORMING ANY WORK.

Use tripods, towers, and attachments to tripods and towers only for purposes for which they are designed. Do not
exceed design limits. Be familiar and comply with all instructions provided in product manuals. Manuals are
available at www.campbellsci.eu or by telephoning [phone] (UK). You are responsible for conformance
with governing codes and regulati ons, including safety regulati ons, and the integrity and locati on of structures or land
to which towers, tripods, and any attachments are attached. Installation sites should be evaluated and approved by a
qualified engineer. If questions or co ncerns arise regarding installation, use, or maintenance of tripods, towers,
attachments, or electrical connections, consult with a licensed and qualified engineer or electrician.

General

• Prior to performing site or installation work, obtain required approvals and permits. Comply with all

governing structure-height regulations, such as those of the FAA in the USA.

• Use only qualified personnel for installation, use, and maintenance of tripods and towers, and any

attachments to tripods and towers. The use of licensed and qualified contractors is highly recommended.

• Read all applicable instructions carefully and understand procedures thoroughly before beginning work.

• Wear a hardhat and eye protection, and take other appropriate safety precautions while working on or

around tripods and towers.

• Do not climb tripods or towers at any time, and prohibit climbing by other persons. Take reasonable

precautions to secure tripod and tower sites from trespassers.

• Use only manufacturer recommended parts, materials, and tools.

Utility and Electrical

• You can be killed or sustain serious bodily injury if the tripod, tower, or attachments you are installing,

constructing, using, or maintaining, or a tool, stake, or anchor, come in contact with overhead o

nderground utility lines.

u

• Maintain a distance of at least one-and-one-half times structure height, or 20 feet, or the distance

r

equired by applicable law, whichever is greater, between overhead utility lines and the structure (tripod,

tower, attachments, or tools).

• Prior to performing site or installation work, inform all utility companies and have all underground utilities

marked.

• Comply with all electrical codes. Electrical equipment and related grounding devices should be installed

by a licensed and qualified electrician.

r

Elevated Work and Weather

• Exercise extreme caution when performing elevated work.

• Use appropriate equipment and safety practices.

• During installation and maintenance, keep tower and tripod sites clear of un-trained or non-essential

personnel. Take precautions to prevent elevated tools and objects from dropping.

• Do not perform any work in inclement weather, including wind, rain, snow, lightning, etc.

Maintenance

• Periodically (at least yearly) check for wear and damage, including corrosion, stress cracks, frayed cables,

loose cable clamps, cable tightness, etc. and take necessary corrective actions.

• Periodically (at least yearly) check electrical ground connections.

WHILE EVERY ATTEMPT IS MADE TO EMBODY THE HIGHEST DEGREE OF SAFETY IN ALL CAMPBELL
SCIENTIFIC PRODUCTS, THE CUSTOMER ASSUMES ALL RISK FROM ANY INJURY RESULTING FROM IMPROPER
INSTALLATION, USE, OR MAINTENANCE OF TRIPODS, TOWERS, OR ATTACHMENTS TO TRIPODS AND TOWERS
SUCH AS SENSORS, CROSSARMS, ENCLOSURES, ANTENNAS, ETC.

Table of Contents

PDF viewers: These page numbers refer to the printed version of this document. Use the
PDF reader bookmarks tab for links to specific sections.

1. Introduction ................................................................. 1

2. Precautions ................................................................. 1

3. Initial Inspection ......................................................... 1

3.1 Ships With ............................................................................................ 2

4. QuickStart .................................................................... 2

5. Overview ...................................................................... 3

6. Specifications ............................................................. 4

7. Installation ................................................................... 5

7.1 Placement on a Photovoltaic (PV) Module .......................................... 5

7.2 Mounting to a PV Module or Other Device ......................................... 6

7.3 Cable Strain Relief ............................................................................... 7

7.4 Wiring .................................................................................................. 8

7.5 Datalogger Programming ..................................................................... 8

7.5.1 Resistance Measurement ............................................................... 9

7.5.2 Converting Resistance Measurement to Temperature .................. 9

8. Operation ................................................................... 10

8.1 Measurement Details .......................................................................... 10

8.2 Electrical Noisy Environments .......................................................... 10

8.3 Long Lead Lengths ............................................................................ 10

9. Maintenance and Troubleshooting ......................... 11

9.1 Troubleshooting ................................................................................. 11

9.2 Maintenance ....................................................................................... 11

Appendices

A. Importing S

hort Cut Code Into CRBasic Editor ... A-1

B. Example Programs ................................................. B-1

B.1 CR1000 Programs ............................................................................ B-1

B.1.1 Half Bridge CR1000 Program................................................... B-1

B.1.2 4-Wire Half Bridge CR1000 Program ...................................... B-3

B.2 Example CR200X Program.............................................................. B-4

i

Table of Contents

C. Probe Material Properties ....................................... C-1

C.1 3M 9485PC Adhesive ..................................................................... C-1

C.2 Santoprene® ..................................................................................... C-1

Figures

5-1. 110PV Temperature Probe .................................................................. 4

7-1. Types of PV modules .......................................................................... 6

7-2. 110PV mounted to a PV module using Kapton tape ........................... 7

7-3. 110PV’s strain relief label ................................................................... 7

Tables

7-1. Connections to Campbell Scientific Dataloggers ................................ 8

B-1. Wiring for Example Programs ......................................................... B-1

CRBasic Examples

B-1. Half Bridge CR1000 Program ......................................................... B-1

B-2. 4-Wire Half Bridge CR1000 Program ............................................. B-3

B-3. Example CR200X Program ............................................................. B-4

ii

110PV Surface Temperature Probe

NOTE

1. Introduction

The 110PV-L temperature probe uses a thermistor to measure temperature
from –40 to 135 °C. It is designed for measuring the back of photovoltaic (PV)
module temperature but also can be used to measure other surface
temperatures. The 110PV-L is compatible with all Campbell Scientific
dataloggers.

This manual provides information only for CRBasic dataloggers.
It is also compatible with our retired Edlog dataloggers. For Edlog
datalogger support, see an older manual at

www.campbellsci.com/old-manuals.

2. Precautions

• READ AND UNDERSTAND the Safety section at the front of this

manual.

• Do not use epoxy to secure the 110PV to a PV module.

• Prying the 110PV off without heating it will likely damage both the probe

and PV module.

• The 110PV’s cable must be properly strain relieved after mounting the

probe to the measurement surface (Section 7.3, Cable Strain Relief

• Placement of the 110PV’s cable inside a rugged conduit is advisable for

long cable runs, especially in locations subject to digging, mowing, traffic,
use of power tools, animals, or lightning strikes.

• Santoprene

cable, will support combustion in air. It is used because of its resistance to
temperature extremes, moisture, and UV degradation. It is rated as slow
burning when tested according to U.L. 94 H.B. and passes FMVSS302.
However, local fire codes may preclude its use inside buildings.

3. Initial Inspection

• Upon receipt of the 110PV, inspect the packaging and contents for

damage. File damage claims with the shipping company.

• The model number, cable length, and cable resistance are printed on a

label at the connection end of the cable. Check this information against the
shipping documents to ensure the expected product and cable length are
received.

• Refer to the Ships With list to ensure that all parts are included (see

Section 3.1, Ships With

(p. 7)).

®

rubber, which composes the black outer jacket of the 110PV

(p. 2).

1

110PV Surface Temperature Probe

3.1 Ships With

The 110PV ships with:

(2) Adhesive-backed, 3 cm, cable tie mount (pn #2376)
(2) Cable tie, 4-inch, UV stabilized (pn #2207)
(1) Resource DVD

4. QuickStart

Short Cut is an easy way to program your datalogger to measure the 110PV
and assign datalogger wiring terminals. Short Cut is available as a download
on www.campbellsci.eu and the ResourceDVD. The following procedure
shows using Short Cut to program the 110PV.

1. O

2. Double-click the datalogger model.

3. Under the Available Sensors and Devices list, select the Sensors |

pen Short Cut and select to create a new program.

Temperature | Soil Moisture and double-click 110PV. Enter the Cable
Resistance. This value is unique for each 110PV, and is printed on the

heat shrink label attached to the sensor cable. The surface temperature
defaults to degree C. This can be changed by clicking the Temperature
box and selecting one of the other options.

2

110PV Surface Temperature Probe

4. After selecting the sensor, click at the left of the screen on Wiring
Diagram to see how the sensor is to be wired to the datalogger. Short Cut

uses a 3-wire half bridge measurement, and therefore doesn’t use the blue,
green, and white wires. The wiring diagram can be printed out now or after
more sensors are added.

5. Select any other sensors you have, then finish the remaining Short Cut
steps to complete the program. The remaining steps are outlined in Shor

t Help, which is accessed by clicking on Help | Contents |

Cu

Programming Steps.

t

5. Overview

6. If LoggerNet, PC400, RTDAQ, or PC200W is running on your PC, and the
PC to datalogger connection is active, you can click Finish in Short Cut
and you will be prompted to send the program just created to the
datalogger.

7. If the sensor is connected to the datalogger, as shown in the wiring
diagram in step 4, check the output of the sensor in the datalogger suppor

oftware data display to make sure it is making reasonable measurements.

s

The 110PV can provide the photovoltaic (PV) module temperature for solar
energy applications. This measurement is useful since the output of a PV
module is affected by its temperature. As the temperature of the PV module
increases, its output decreases.

The 110PV-L consists of a thermistor encased in an aluminium disk (see
FIGURE 5-1). The aluminium disk protects the thermistor and promotes
heat transfer from surfaces. An adhesive tab on the probe’s aluminium disk
fastens the 110PV to the measurement surface. If the temperature may
exceed 70 °C, also use Kapton tape (pn #27015) to secure the probe to the
measurement surface.

t

3

110PV Surface Temperature Probe

Stain-relief label

Santoprene®-jacketed cable

Thermistor encased

in an aluminium disk

Overmoulded joint

FIGURE 5-1. 110PV Temperature Probe

The –L portion of the probes model number indicates the probe has a user­defined cable length that is specified when the probe is ordered.

The probe’s cable can terminate in:

6. Specifications

Features:

• Pigtails

(option –PT).

• Connector that attaches to a prewired enclosure (option –PW). Refer

to www.campbellsci.eu/prewired-enclosures for more information.

• Connector that attaches to a CWS900 Wireless Sensor Interface

(option –CWS). The CWS900 allows the 110PV to be used in a
wireless sensor network. Refer to www.campbellsci.eu/cws900 for
more information.

• Easy to install—adh

the back of a solar panel or other device

• Aluminium disk protects thermistor and promotes heat transfer from

surfaces

• Makes accurate measurements in environments with heavy

electromagnetic interference

• Compatible with Campbell Scientific CRBasic dataloggers: CR200(X)

series, CR300 series, CR6 series, CR800 series, CR1000, CR1000X,
CR3000, and CR5000

that connect directly to a Campbell Scientific datalogger

esive strips on the 110PV’s smooth face adhere to

4

110PV Surface Temperature Probe

Temperature Range: –40 to 135 °C

Survival Range: –50 to 140 °C

Accuracy

1

Worst Case:

±0.2 °C (–40 to 70 °
±0.5 °C (71 to 105 °C)
±1 °C (106 to 135 °C)

Ma

ximum Steinhart-Hart

Linearization Error:

Maximum Cable Length: Disk

Diameter:

Overa

ll Probe Length:

0.0024 °C at –40 °C

304.8 m (1000 ft)

2.54 cm (1.0 in)

6.35 cm (2.5 in)

Overmoulded Joint Dimensions

idth:

W
Height:
Length:

Cable Diameter:

1.12 cm (0.44 in)

1.47 cm (0.58 in)

5.72 cm (2.25 in)

0.622 cm (0.245 in)

Material

Disk:
Cable Jacket:

Anodized Aluminium
Santoprene

Cable/Probe Connection: Santoprene

C)

®

®

7. Installation

7.1 Placement on a Photovoltaic (PV) Module

Weight: 90.7 g (0.2 lb) with 3.2 m (10.5 ft) cable

1

The overall probe accuracy is a combination of the thermistor’s interchangeability
specification, the accuracy of the bridge resistor, and error of the Steinhart-Hart
equation. The major error component is the interchangeability specification (tolerance)
of the thermistor. The bridge resistor has a 0.1% tolerance with a 10 ppm temperature
coefficient. Effects of cable resistance is discussed in Section 8.3, Long Lead Lengths (p.

.

10)

If you are programming your datalogger with Short Cut, skip Section 7.4,

(p. 8), and Section 7.5, Datalogger Programming (p. 8). Short Cut does

Wiring
this work for you. See Section 4, QuickStart

(p. 2), for a Short Cut tutorial.

The PV module may or may not have distinctive solar cells (FIGURE 7-1). If
the PV module does not have distinctive solar cells, center the 110PV on the
back of the PV module. If the module has several distinctive photocells, center
the 110PV on the back of the photocell that is the middle of the PV module.

5

110PV Surface Temperature Probe

PV module without

distinctive solar cells

PV module with

distinctive solar cells

GURE 7-1. Types of PV modules

FI

7.2 Mounting to a PV Module or Other Device

The 110PV includes an adhesive mounting strip adhered to the flat surface of
the aluminium disk. To mount the 110PV, remove the paper from the
mounting strip and adhere it to the back of the PV module or other device.
The mounting strip must be adhered to a clean surface for its adhesive to
function properly.

If the temperature might exceed 70 °C, use Kapton tape (pn #27015) to secure
the probe to the measurement surface (see FIGURE 7-2). To ensure that the
probe is adequately fastened to the measurement surface, use three strips of
Kapton tape:

1. Pl

ace the first strip of tape across the sensor and rub the tape surface to

remove bubbles.

2. Place the other strips of tape on the first strip of tape and rub the tape
surface to remove bubbles. The three strips of tape should form an “H”
(FIGURE 7-2).

6

110PV Surface Temperature Probe

NOTE

CAUTION

F

IGURE 7-2. 110PV mounted to a PV module using Kapton tape

7.3 Cable Strain Relief

The 110PV’s cable must be properly strain relieved after mounting the probe to
the measurement surface. To accomplish this, the probe comes with cable ties
and a cable tie mount. A yellow label on the 110PV’s cable indicates where the
cable should be tied down (see FIGURE 7-3).

Placement of the cable inside a rugged conduit is advisable for
long cable runs, especially in locations subject to digging,
mowing, traffic, use of power tools, animals, or lightning strikes.

F

IGURE 7-3. 110PV’s strain relief label

Do not use epoxy to secure the 110PV to a PV module.

7

110PV Surface Temperature Probe

TABLE 7-1. Connections to Campbell Scientific Dataloggers

⏚

⏚

⏚

⏚

NOTE
NOTE

7.4 Wiring

When Short Cut software is used to generate the datalogger
program, the sensor should be wired to the channels shown on the
wiring diagram created by Short Cut.

Connections to Campbell Scientific dataloggers are given in TABLE 7-1. Most
CRBasic dataloggers can measure the 110PV using either a 4-wire half bridge
or 3-wire half bridge. The CR200(X) dataloggers can only use a 3-wire half
bridge. The 4-wire half bridge method is preferred because it reduces cable
errors. The 4-wire half bridge method requires two differential input channels
and one voltage excitation channel. The 3-wire half bridge method uses one
single-ended input channel and one voltage excitation channel.

Multiple probes can be connected to the same excitation channel. The number
of probes per excitation channel is physically limited by the number of lead
wires that can be inserted into a single voltage excitation terminal,
approximately six.

Colour Description

Black Voltage Excitation Voltage Excitation Voltage Excitation

Red Signal Differential Input (H) Single-Ended Input

Purple Signal Reference Differential Input (L)

Blue Signal Reference

Clear Shield

Green Sense + Differential Input (H) Not Used

White Sense – Differential Input (L) Not Used

7.5 Datalogger Programming

Short Cut is the best source for up-to-date datalogger programming code.
Programming code is needed when:

• Creating a program for a new datalogger installation

• Adding sensors to an existing datalogger program

If your data acquisition requirements are simple, you can probably create and
maintain a datalogger program exclusively with Short Cut. If your data
acquisition needs are more complex, the files that Short Cut creates are a great
source for programming code to start a new program or add to an existing
custom program.

4-Wire

Half Bridge

3-Wire

Half Bridge

Not Used

Short Cut cannot edit programs after they are imported and edited
in CRBasic Editor.

8

110PV Surface Temperature Probe

A Short Cut tutorial is available in Section 4, QuickStart
import Short Cut code into CRBasic Editor to create or add to a customized
program, follow the procedure in Appendix A, Importing Short Cut Code Into
CRBasic Editor

(p. A-1).

Programming basics for CRBasic dataloggers are provided in the following
sections. Complete program examples for select CRBasic dataloggers can be
found in Appendix B, Example Programs
programming examples for Edlog dataloggers are provided at

www.campbellsci.com\old-manuals.

If applicable, please read Section 8.2, Electrical Noisy Environments
Section 8.3, Long Lead Lengths
Measurement details are provided in Section 8.1, Measurement Details

7.5.1 Resistance Measurement

The CR300 series, CR6, CR800, CR850, CR1000, CR1000X, CR3000,
CR5000, and CR9000(X) can use either the BrHalf4W() instruction or
BrHalf() instruction to measure the 110PV. The BrHalf4W() instruction
reduces cable errors, but the BrHalf() instruction requires fewer input
channels.

A typical BrHalf4W() instruction is:

BrHalf4W(Dest,1,mV2500,mV2500,1,Vx1,1,2500,True ,True ,0,250,1.0,0)

(p. 2). If you wish to

(p. B-1). Programming basics and

(p. 10), and

(p. 10), prior to programming your datalogger.

(p. 10).

A typical BrHalf() instruction is:

BrHalf(Dest,1,mV2500,1,Vx1,1,2500,True ,0,250,1.0,0)

The CR200(X)-series dataloggers use the ExDelSe() instruction to measure the
110PV. The ExDelSe() instruction has the following syntax:

ExDelSE( Dest, Reps, SEChan, ExChan, ExmV, Delay, Mult, Offset )

A multiplier of 1.0 and offset of 0.0 should be used in the ExDelSe(),
BrHalf4W(), and BrHalf() instructions to provide a temperature in degrees
Celsius. For Fahrenheit, multiply the calculated Celsius temperature by 1.8
then add 32.

7.5.2 Converting Resistance Measurement to Temperature

The Steinhart-Hart equation is used to convert the resistance measurement to
temperature.

Temp_C = (1/(A+B*LOG(T110PV_Res)+C*(LOG(T110PV_Res))^3))-273.15

The coefficients used for the Steinhart-Hart equation are:

A=1.129241*10
B=2.341077*10
C=8.775468*10–8

–3

–4

9

110PV Surface Temperature Probe

t

EX

RVV+

=

990,4

990,4











−= 1990,4

V

V

R

EX

t

3

))(ln()ln(

1

TT

K

RCRBA

T++=

8. Operation

8.1 Measurement Details

Understanding the details in this section is not necessary for general operation
of the 110PV Probe with our dataloggers.

Simple half bridge measurement, ignoring cable resistance, has a measured
voltage, V, of:

Wh
resistor and R

The resistance of the thermistor is:

ere V

is the excitation voltage, 4,990 ohms is the resistance of the fixed

EX

is the resistance of the thermistor

t

The Steinhart-Hart equation is used to calculate temperature from Resistance:

Where TK
are:

= 1.129241x10

A
B = 2.341077x10
C = 8.775468x10

is the temperature in Kelvin. The Steinhart-Hart coefficients used

–3

–4

–8

8.2 Electrical Noisy Environments

AC power lines, pumps, and motors, can be the source of electrical noise. If the
110PV probe or datalogger is located in an electrically noisy environment, the
110PV probe should be measured with the 60 or 50 Hz rejection option as
shown in Appendix B.1.1, Half Bridge CR1000 Program

B.1.2, 4-Wire Half Bridge CR1000 Program

8.3 Long Lead Lengths

Cable resistance can cause significant error. For each 110PV, the cable
resistance (ohms) is printed on the heat shrink label on the sensor cable. When
measuring the 110PV in a 3-wire configuration, the cable resistance can be
subtracted from the measured resistance value (see Appendix B.1.1, Half
Bridge CR1000 Program

(p. B-4)).

(p. B-1), and Appendix B.2, Example CR200X Program

(p. B-1), and Appendix

(p. B-3).

10

Alternatively, the 110PV-L’s cable includes leads allowing it to be measured
with a 4-wire half bridge configuration, which corrects for cable resistance (see
Appendix B.1.2, 4-Wire Half Bridge CR1000 Program

(p. B-3)).

110PV Surface Temperature Probe

NOTE

CAUTION

Additional settling time may be required for lead lengths longer than 300 feet,
where settling time is the delay before the measurement is made. The 60 and
50 Hz integration options include a 3 ms settling time; longer settling times can
be entered into the Settling Time parameter.

9. Maintenance and Troubleshooting

For all factory repairs, customers must get an RMA. Customers
must also properly fill out a “Declaration of Hazardous Material
and Decontamination” form and comply with the requirements
specified in it. Refer to the
manual for more information.

9.1 Troubleshooting

Symptom: Temperature is NAN, –INF, –9999, –273

Verify the red wire is connected to the correct single-ended analogue input
channel as specified by the measurement instruction, the black wire is
connected to the switched excitation channel as specified by the measurement
instruction, and the purple wire is connected to datalogger ground.

Assistance page at the front of this

Symptom: Incorrect Temperature

Verify the multiplier and offset parameters are correct for the desired units
(Section 7.5, Datalogger Programming
damage and possible moisture intrusion.

If the 110PV needs to be sent to Campbell Scientific for
repairs, remember that the probe must be heated to 70 to
80 °C before removing it from the measurement surface.
Prying the probe off without heating it will likely damage both
the probe and the PV module.

Symptom: Unstable Temperature

Try using the 60 or 50 Hz integration options, and/or increasing the settling
time. Make sure the clear shield wire is connected to datalogger ground, and
the datalogger is properly grounded.

9.2 Maintenance

The 110PV probe requires minimal maintenance. Periodically check cabling
for proper connections, signs of damage, and possible moisture intrusion.

(p. 8)). Check the cable for signs of

11

110PV Surface Temperature Probe

12

Appendix A. Importing Short Cut Code

NOTE

Into CRBasic Editor

This tutorial shows:

• How to import a Short Cut program into a program editor for

additional refinement

• How to import a wiring diagram from Short Cut into the comments of

a custom program

Short Cut creates files, which can be imported into CRBasic Editor. Assuming
defaults were used when Short Cut was installed, these files reside in the
C:\campbellsci\SCWin folder:

• .DEF (wiring and memory usage information)

• .CR2 (CR200(X)-series datalogger code)

• .CR300 (CR300-series datalogger code)

• .CR6 (CR6-series datalogger code)

• .CR8 (CR800-series datalogger code)

• .CR1 (CR1000 datalogger code)

• .CR1X (CR1000X datalogger code)

• .CR3 (CR3000 datalogger code)

• .CR5 (CR5000 datalogger code)

Use the following procedure to import Short Cut code and wiring diagram into
CRBasic Editor.

1. Create the Short Cut program following the procedure in Section 4,
QuickStart

file name used when saving the Short Cut program.

2. Open CRBasic Editor.

3. Click File | Open. Assuming the default paths were used when Short Cut
was installed, navigate to C:\CampbellSci\SCWin folder. The file of
interest has the .CR2, .CR300, .CR6, .CR8, .CR1, .CR1X, .CR3, or .CR5
extension. Select the file and click Open.

4. Immediately save the file in a folder different from
C:\Campbellsci\SCWin, or save the file with a different file name.

Once the file is edited with CRBasic Editor, Short Cut can no
longer be used to edit the datalogger program. Change the name
of the program file or move it, or Short Cut may overwrite it next
time it is used.

5. The program can now be edited, saved, and sent to the datalogger.

6. Import wiring information to the program by opening the associated .DEF
file. Copy and paste the section beginning with heading “-Wiring fo
CRX
pasting, edit the information such that an apostrophe (') begins each line.
This character instructs the datalogger compiler to ignore the line whe
c

ompiling.

(p. 2). Finish the program and exit Short Cut. Make note of the

r

XX–” into the CRBasic program, usually at the head of the file. After

n

A-1

Appendix B. Example Programs

TABLE B-1. Wiring for Example Programs

⏚

⏚

⏚

⏚

CRBasic Example B-1. Half Bridge CR1000 Program

'CR1000 Series Datalogger

Units T110PV_Temp_C=Deg C

Datalogger Connection

Colour Description

Black Voltage Excitation VX1 or EX1 VX1 or EX1

Red Signal SE1 Diff 1H

Purple Signal Reference

Blue Signal Reference Not Used

Clear Shield

Green Sense + Not Used Diff 2H

White Sense – Not Used Diff 2L

B.1 CR1000 Programs

B.1.1 Half Bridge CR1000 Program

'This example program measures a single 110PV-L probe utilizing
'the BrHalf instruction once a second and stores the average
'temperature in degrees C every 10 minutes.

BrHalf BrHalf4W

Diff 1L

110PV-L Wiring Configuration

'
'Lead Colour
'Black
'Red
'Purple
'Blue

Green Not Used N/A

'
'White Not Used N/A
'Clear AG Shield

'

Declare variables for temperature measurement using Half Bridge configuration

Public T110PV_mV
Public T110PV_Res
Public T110PV_Temp_C
Public T110PV_Temp_F

'

Declare Constants to be used in Steinhart-Hart equation

Const A=1.129241*10^-3
Const B=2.341077*10^-4
Const C=8.775468*10^-8
Const R_cable=0 'see sensor cable for cable resistance

Declare variable units

'

Units T110PV_mV= millivolts
Units T110PV_Res=Ohms

CR1000 Channel Description
VX1 Voltage Excitation
SE1 Signal
AG Signal Reference
Not Used N/A

B-1

Appendix B. Example Programs

Units T110PV_Temp_F=Deg F

EndProg

'

Define a data table for 10 minute averages

DataTable (AvgTemp,1,1000)

DataInterval (0,10,Min,10)
Average (1,T110PV_Temp_C,FP2,False)

EndTable

B

eginProg

Scan (1,Sec,3,0)

'Measure 110PV-L probe

BrHalf (T110PV_mV,1,mV2500,1,Vx1,1,2500,True ,0,_60Hz,1.0,0)

'Convert mV to ohms

T110PV_Res=4990*(1-T110PV_mV)/T110PV_mV

'Subtract off cable resistance (see 110PV-L cable for R_cable)

T110PV_Res= T110PV_Res-R_cable

'Using the Steinhart-Hart equation to convert resistance to temperature

T110PV_Temp_C = (1/(A+B*LOG(T110PV_Res)+C*(LOG(T110PV_Res))^3))-273.15

'Convert Celsius to Fahrenheit

T110PV_Temp_F = T110PV_Temp_C * 1.8 + 32

'Call AvgTemp data table

CallTable AvgTemp

NextScan

B-2

CRBasic Example B-2. 4-Wire Half Bridge CR1000 Program

'CR1000 Series Datalogger

EndProg

Appendix B. Example Programs

B.1.2 4-Wire Half Bridge CR1000 Program

'This example program measures a single 110PV-L probe utilizing the
'BRHalf4Winstruction once a second and stores the
'average temperature in degrees C every 10 minutes.

'

110PV-L Wiring Configuration
'Lead Colour
'Black
'Red
'Purple
'Blue
'

Green DIFF2H Sense +
'White DIFF2L Sense ­'Clear AG Shield

'Declare variables for temperature measurement using Half Bridge configuration

Public T110PV_mV
Public T110PV_Res
Public T110PV_Temp_C
Public T110PV_Temp_F

Declare constants to be used in Steinhart-Hart equation

'

Const A=1.129241*10^-3
Const B=2.341077*10^-4
Const C=8.775468*10^-8

CR1000 Channel Description
VX1/EX1 Voltage Excitation
DIFF1H Signal
DIFF1L Signal Reference
AG Signal Reference

'

Declare variable units

Units T110PV_mV= millivolts
Units T110PV_Res=Ohms
Units T110PV_Temp_C=Deg C
Units T110PV_Temp_F=Deg F

'

Define a data table for 10 minute averages

DataTable (AvgTemp,1,1000)

DataInterval (0,10,Min,10)
Average (1,T110PV_Temp_C,FP2,False)

EndTable

B

eginProg

Scan (1,Sec,3,0)

'Measure 110PV-L probe

BrHalf4W (T110PV_mV,1,mV2500,mV2500,1,Vx1,1,2500,True,True,0,_60Hz,1.0,0)

'Convert mV to ohms

T110PV_Res=4990 *T110PV_mV

'Use the Steinhart-Hart equation to convert resistance to temperature

T110PV_Temp_C = (1/(A+B*LOG(T110PV_Res)+C*(LOG(T110PV_Res))^3))-273.15

'Convert Celsius to Fahrenheit

T110PV_Temp_F = T110PV_Temp_C * 1.8 + 32
CallTable AvgTemp

NextScan

B-3

Appendix B. Example Programs

CRBasic Example B-3. Example CR200X Program

'CR200 Series Datalogger

B.2 Example CR200X Program

'This example program measures a single 110PV-L probe
'once a second using the ExDelSE instruction and stores
'the average temperature in degrees C every 10 minutes.

'

'Lead Colour
'Black
'Red
'Purple

'
'White Not Used N/A
'Clear AG Shield

'Declare variables for temperature measurement

Public T110PV_mV
Public T110PV_Res
Public T110PV_Temp_C
Public T110PV_Temp_F

'

Const A=1.129241*10^-3
Const B=2.341077*10^-4
Const C=8.775468*10^-8
Const R_cable=0 'see sensor cable for cable resistance

110PV-L Wiring configuration for program example

'Blue

Green Not Used N/A

Declare constants to be used in Steinhart-Hart equation

CR200(X) Channel Description
VX1 Voltage Excitation
SE1 Signal
AG Signal Reference
Not Used N/A

'

Declare variable units

Units T110PV_mV= millivolts
Units T110PV_Res=Ohms
Units T110PV_Temp_C=Deg C

'

Define a data table for 10 minute averages

DataTable (AvgTemp,1,1000)

DataInterval (0,10,min)
Average (1,T110PV_Temp_C,False)

EndTable

'Main Program

BeginProg

Scan (1,Sec)

'Measure 110PV-L probe with SE1

ExDelSE (T110PV_mV,1,1,Ex1,mV2500,500,1.0,0)

'Convert mV to ohms

T110PV_Res = 4990*(2500/T110PV_mV)-4990

'Subtract off cable resistance (see 110PV-L cable for R_cable)

T110PV_Res = T110PV_Res-R_cable

'Using the Steinhart-Hart equation to convert resistance to temperature

T110PV_Temp_C = (1/(A+B*LOG(T110PV_Res)+C*(LOG(T110PV_Res))^3))-273.15

'Convert Celsius to Fahrenheit

T110PV_Temp_F = T110PV_Temp_C * 1.8 + 32

'Call AvgTemp data table

CallTable AvgTemp
NextScan

EndProg

B-4

Appendix C. Probe Material Properties

The probe consists of 6061 aluminium (clear anodized), thermistor,
3M9485PC adhesive, and Santoprene® jacketed cable.

C.1 3M 9485PC Adhesive

Humidity Resistance: High humidity has a minimal effect on adhesive
performance. Bond strengths are generally higher after exposure for 7 days at
90 °F (32 °C) and 90% relative humidity.

U.V. Resistance: When properly applied, nameplates and decorative trim parts
are not adversely affected by outdoor exposure.

Water Resistance: Immersion in water has no appreciable effect on the bond
strength. After 100 hours in room temperature water the bond actually shows
an increase in strength.

Temperature Cycling Resistance: Bond strength generally increases after
cycling four times through:

• 4 hours at 158 °F (70 °C)

• 4 hours at –20 °F (–29 °C)

• 16 hours at room temperature

C.2 Santoprene

Chemical Resistance: When properly applied, adhesive will hold securely
after exposure to numerous chemicals including gasoline, oil, Freon™ TF,
sodium chloride solution, mild acids, and alkalis.

Heat Resistance: Adhesive 350 is usable for short periods (minutes, hours) at
temperatures up to 350 °F (177 °C) and for intermittent longer periods (days,
weeks) up to 250 °F (121 °C).

Low Temperature Service: –40 °F (–40 °C). Parts should be tested for low
temperature shock service.

®

The following information is from Advanced Elastomer Systems; Santoprene
Rubber Fluid Resistance Guide; pp 2, 3, 9; copyright 2000.

C-1

Appendix C. Probe Material Properties

C-2

Appendix C. Probe Material Properties

C-3

Appendix C. Probe Material Properties

C-4

Campbell Scientific Companies

Campbell Scientific, Inc.

815 West 1800 North

Logan, Utah 84321

UNITED STATES

www.campbellsci.com • [e-mail]

Campbell Scientific Africa Pty. Ltd.

PO Box 2450

Somerset West 7129

SOUTH AFRICA

www.campbellsci.co.za • [e-mail]

Campbell Scientific Southeast Asia Co., Ltd.

877/22 Nirvana@Work, Rama 9 Road

Suan Luang Subdistrict, Suan Luang District

Bangkok 10250

THAILAND

www.campbellsci.asia • [e-mail]

Campbell Scientific Australia Pty. Ltd.

PO Box 8108

Garbutt Post Shop QLD 4814

AUSTRALIA

www.campbellsci.com.au • [e-mail]

Campbell Scientific Canada Corp.

14532 – 131 Avenue NW

Edmonton AB T5L 4X4

CANADA

www.campbellsci.ca • [e-mail]

Campbell Scientific Centro Caribe S.A.

300 N Cementerio, Edificio Breller

Santo Domingo, Heredia 40305

COSTA RICA

www.campbellsci.cc • [e-mail]

Campbell Scientific Ltd.

Campbell Park

80 Hathern Road

Shepshed, Loughborough LE12 9GX

UNITED KINGDOM

www.campbellsci.co.uk • [e-mail]

Campbell Scientific Ltd.

3 Avenue de la Division Leclerc

92160 ANTONY

FRANCE

www.campbellsci.fr • [e-mail]

Campbell Scientific (Beijing) Co., Ltd.

8B16, Floor 8 Tower B, Hanwei Plaza

7 Guanghua Road

Chaoyang, Beijing 100004

P.R. CHINA

www.campbellsci.com • [e-mail]

Campbell Scientific do Brasil Ltda.

Rua Apinagés, nbr. 2018 ─ Perdizes

CEP: 01258-00 ─ São Paulo ─ SP

BRASIL

www.campbellsci.com.br • [e-mail]

Please visit www.campbellsci.com to obtain contact information for your local US or international representative.

www.campbellsci.de • [e-mail]

www.campbellsci.es •

Campbell Scientific Ltd.

Fahrenheitstraße 13

28359 Bremen

GERMANY

Campbell Scientific Spain, S. L.

Avda. Pompeu Fabra 7-9, local 1

08024 Barcelona

SPAIN

[e-mail]