Campbell CRS451 User manual

CRS451/CRS456
Submersible Water-Level
Recording Sensor
Issued: 3.3.14
Copyright © 2013-2014 Campbell Scientific, Inc.
Printed under licence by Campbell Scientific Ltd.
CSL 996
USER MANUAL

Guarantee
This equipment is guaranteed against defects in materials and workmanship.
This guarantee applies for twelve months from date of delivery. We will
repair or replace products which prove to be defective during the guarantee
period 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,
Campbell Park, 80 Hathern Road,
Shepshed, Loughborough, LE12 9GX, UK
Tel: [phone]
Fax: [phone]
Email: [email protected]
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
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
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.
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, Campbell Park, 80 Hathern Road, Shepshed, Loughborough, LE12 9GX, UK
Tel: [phone] Fax: [phone]
Email: [email protected]
www.campbellsci.co.uk

i
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. Cautionary Statements .....................................1
3. Initial Inspection and Handling Guidelines .....1
3.1 Ships With..............................................................................................2
4. Overview............................................................2
5. Specifications....................................................2
6. Installation.........................................................4
6.1 Appropriate Depth..................................................................................4
6.2 Avoiding Freezing Conditions................................................................4
6.3 Dislodge Bubbles ...................................................................................5
6.4 Well Installation .....................................................................................5
6.5 Other Installations ..................................................................................5
6.6 Battery Voltage Reading ........................................................................5
6.7 Attaching Suspension Cable to CRS451/CRS456..................................6
7. Programming.....................................................7
7.1 Settings...................................................................................................7
7.2 Connect to the CRS451/CR456..............................................................8
7.3 Configure CRS45X for Measurements...................................................8
7.4 Compensating Measurements for Barometric Pressure........................14
7.4.1 Using an Additional CRS45X.....................................................15
7.4.2 Using a Barometer......................................................................15
8. Maintenance ....................................................19
8.1 Every Visit............................................................................................19
8.2 Every Two to Three Years or on a Rotating Schedule .........................20
8.3 Battery Replacement ............................................................................20
9. Troubleshooting..............................................25

ii
Appendices
Appendix A. Calibration Certificate ...................................................................A-1
Appendix B. Conversion to Units of Measurement............................................B-1
Table
B-1. Conversion Factors ..........................................................................B-1

1
CRS451/CRS456 Submersible
Water-Level Recording Sensor
1. Introduction
The CRS451 consists of a water-level and water-temperature sensor that has its
own time clock and memory to store the collected data, in a compact stainless-
steel case. This frees users to place the sensor in remote sites and let it collect data
for long periods of time. The CRS451/CRS456 supports standard time-based
scanning and recording along with event-based recording based on water level
change (Delta) or logarithmic time sequence for pump and slug tests. HydroSci
software is included and supports test set up, data retrieval, and data display.
The CRS451 has a 316L stainless-steel case that can be submerged in most canals,
wells, ponds, lakes, and streams. The CRS456 has a rugged titanium case that
allows it to be used in saltwater or other harsh environments.
Before using the CRS451/CRS456, please study:
Section 2, Cautionary Statements
Section 3, Initial Inspection
Section 6, Installation
2. Cautionary Statements
The CRS451/CRS456 will be damaged if encased in frozen liquid (see
Section 6.2, Avoiding Freezing Conditions, for more information).
Although the CRS451/CRS456 is a rugged and reliable device, it is also a
highly precise scientific instrument and should be handled as such.
Dropping the instrument or allowing it to “free fall” down a well may damage
the transducer.
Confirm the compatibility of the instrument to non-water environments before
installation.
The CRS456 should be used in harsh water applications, including salt water.
3. Initial Inspection and Handling Guidelines
Upon receipt of the CRS451/CRS456, inspect the packaging for any signs of
shipping damage. File damage claims with the shipping company.
Immediately check package contents against the shipping documentation (see
Section 3.1, Ships With). Contact Campbell Scientific with any discrepancies.
The model number and pressure range are etched on the housing.
Check this information against the shipping documentation to
ensure that the expected product was received.

CRS451/CRS456 Submersible Water-Level Recording Sensor
2
3.1 Ships With
#27555 USB 2.0 Cable Type A Male to Micro B Male, 6ft
#29225 HydroSci Software on CD
4. Overview
The CRS451/CRS456, Submersible Water-Level Recording Sensor, provides
reliable, accurate pressure/level measurements that are fully temperature
compensated.
The 24 bit A/D has simultaneous 50/60 Hz rejection and automatic calibration for
each measurement. A number of additional advanced measurement techniques are
employed to harness the best possible performance available from today’s state of
the art pressure sensor technology. The CRS451/CRS456 reverts to a low power
sleep state between measurements. A series of measurements are performed
yielding a temperature and pressure value. This measurement cycle can be as fast
as 1 second.
The design features a piezoresistive sensor housed in a 316L stainless steel
(CRS451) or titanium (CRS456) package to enhance reliability. The rugged
construction makes the CRS451/CRS456 suitable for water level measurement in
irrigation applications, water wells, lakes, streams, and tanks. The titanium
package of the CRS456 makes it ideal for salt water or other harsh environments.
The CRS451/CRS456 has three nose cone options. The weighted nose cone
makes the transducer easier to submerge to depth. The NPT option allows the
sensor to be mounted to a 1/4 inch fitting. The nose cones can be exchanged at a
later time.
Communicating with the CRS451/CRS456 requires a micro USB cable and
HydroSci software running on a computer with Windows XP or later.
Configurable settings can be changed using Campbell Scientific’s HydroSci
software utility.
5. Specifications
Features:
Field replaceable batteries
Campbell Scientific quality
No additional datalogger, enclosure, and power supply; reduces system
costs and simplifies installation
Free customer-friendly software for communication, configuration, data
collection
Fast scan rate
Large data storage capacity
High accuracy
Long battery life