Campbell Scientific SS100 User Manual

SS100 Sensor Simulator
12/10
Copyright © 2007-2010
Campbell Scientific, Inc.

Warranty and Assistance

The SS100 SENSOR SIMULATOR is warranted by Campbell Scientific, Inc. to be free from defects in materials and workmanship under normal use and service for twelve (12) 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
For all returns, the customer must fill out a “Declaration of Hazardous Material and Decontamination” form and comply with the requirements specified in it. The form is available from our website at completed form must be either emailed to repair@campbellsci.com 435-750-9579. Campbell Scientific will not process any returns until we receive this form. If the form is not received within three days of product receipt or is incomplete, the product will be returned to the customer at the customer’s expense. Campbell Scientific reserves the right to refuse service on products that were exposed to contaminants that may cause health or safety concerns for our employees.
www.campbellsci.com/repair
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SS100 Table of Contents
PDF viewers note: These page numbers refer to the printed version of this document. Use the Adobe Acrobat® bookmarks tab for links to specific sections.
1. General .........................................................................1
2. Specifications ..............................................................1
3. Wind Speed and Direction Simulation ....................... 1
4. Tipping Bucket Rain Gage Simulation.......................3
5. Water Level Pressure Transducer Simulation ..........3
i

SS100 Sensor Simulator

1. General

The SS100 is a device used when the Campbell Scientific CR1000/LoggerNet Training Course is taught out-of-house. The SS100 is powered by a nominal 12VDC power source, typically the datalogger itself, and provides several outputs typical of those from sensors commonly measured by Campbell Scientific dataloggers.
The Training Course instructors may use the SS100 in a variety of simulations of their own choosing or use the analogies in this manual.

2. Specifications

Supply Voltage 12VDC
Analog Outputs 0-2.2 VDC
Pulse Outputs High Frequency Pulse: 0-5 VDC, 3-140 Hz, non-linear Low Level AC: 1 VDC, 3-140 Hz, non-linear
Bridge Measurement Full bridge circuit Fixed resistors 5 Kohm Variable resistor 10 Kohm
Switch Closure Momentary push button switch, normally open Approximate duration: 135 ms

3. Wind Speed and Direction Simulation

Sensor: Wind Speed and Direction
Wind Direction (Use SS100 Analog Output) Range: 0-360° Accuracy: +/- 3% Resolution: Wind Direction Voltage: 0-2200 mVDC
Wiring
SS100 CR1000
+ SE1 G
Multiplier and offset calculation: Multiplier = 360 degrees / 2200 mV Offset = 0
1
SS100 Sensor Simulator
CRBasic Measurement Instruction: VoltSe (WindDir,1,mv2500C,1,1,0,_60Hz,360/2200,0)
Wind Speed (Use SS100 High Frequency Pulse Output) Range: 0-50 m/s Accuracy: +/- 5% > 5 m/s or 0.2 m/s < 5 m/s Resolution: 0.1 m/s Wind Speed Output: Linear, Calm = 3Hz, 50 m/s = 140 Hz
Wiring
SS100 CR1000
P P1 G
Multiplier and offset calculation: Using the equation of a line with two known points (0,3) and (50,140): y=mx + b; m = (50-0) / (140-3) = 0.365 m/s / Hz b=y-mx; 50 - .365(140) = -1.095 m/s
CRBasic measurement instruction: PulseCount (WS_ms,1,1 ,0,1,.365,-1.095) 'configured for high frequency
CR1000 Wind Speed and Wind Direction Example
'CR1000 Series Datalogger
'Declare Public Variables Public WS_ms, WindDir
'Define Data Tables
DataTable (SS100,true,-1) DataInterval (0,60,Sec,10) WindVector (1,WS_ms,WindDir,FP2,False,0,0,0) FieldNames ("WS_ms,WindDir,WindDir_SD1") EndTable
'Main Program
BeginProg Scan (1,Sec,0,0)
'Analog Output - Simulated Wind Direction
VoltSe (WindDir,1,mv2500C,1,1,0,_60Hz,360/2200,0)
'Pulse Output - Simulated Wind Speed PulseCount (WS_ms,1,1 ,0,1,.365,-1.095) 'high frequency Hz
'Call Output Tables
CallTable SS100
NextScan EndProg
2

4. Tipping Bucket Rain Gage Simulation

Sensor: Tipping Bucket Rain Gage
Signal Output: Momentary switch closure activated by tipping bucket
mechanism.
Rainfall per tip: 0.01 in.
Wiring
SS100 CR1000
P P2 G
CR1000 Tipping Bucket Rain Gage Simulation Example
'CR1000 'Declare Variables and Units
Public rain_fall
Units rain_fall=inch
'Define Data Tables
DataTable (rain_fall,True,-1) DataInterval (0,1,Min,0) Totalize (1,rain_fall,FP2,0) EndTable
'Main Program
BeginProg Scan (1,Sec,1,0)
'Tipping bucket 0.01" per tip.
PulseCount (rain_fall,1,2,2,0,0.01,0) CallTable (rain_fall) NextScan EndProg
SS100 Sensor Simulator

5. Water Level Pressure Transducer Simulation

Sensor: Submersible pressure transducer
Input: Precise excitation voltage 2.5 VDC
Output: Full bridge differential voltage, linear output, maximum negative
voltage equivalent to zero pressure, maximum positive output equivalent to maximum pressure. Must calibrate in field to determine offset and maximum and minimum pressures.
3
SS100 Sensor Simulator
CR1000 Water Level Pressure Transducer Simulation Example
'CR1000 Series Datalogger
'Declare Public Variables
Public depth_ft
'Define Data Tables
DataTable (SS100,true,-1) DataInterval (0,60,Sec,10) Minimum (1,depth_ft,FP2,0,False) EndTable
'Main Program
BeginProg Scan (1,Sec,0,0)
'Bridge Measurement - Simulated Water Level
BrFull (depth_ft,1,mv2500C,2,Vx1,1,2500,True ,True ,0,_60Hz,0.15,26.14)
'Call Output Tables
CallTable SS100
NextScan EndProg
Wiring
SS100 CR1000
Vin EX1 V1out 2H V2out 2L G
Multiplier and offset calculation: Results with mult = 1, offset = 0, minimum depth = -177, maximum =
500. Assuming the range of the sensor is 0-100 feet, calculate the multiplier and offset using equation of line; m = 0.15, offset = 26.14.
CRBasic measurement instruction: BrFull (depth_ft,1,mv2500C,2,Vx1,1,2500,True ,True ,0,_60Hz,0.15,26.14)
4
Campbell Scientific Companies
Campbell Scientific, Inc. (CSI)
815 West 1800 North
Logan, Utah 84321
UNITED STATES
www.campbellsci.com • info@campbellsci.com
Campbell Scientific Africa Pty. Ltd. (CSAf)
PO Box 2450
Somerset West 7129
SOUTH AFRICA
www.csafrica.co.za • cleroux@csafrica.co.za
Campbell Scientific Australia Pty. Ltd. (CSA)
PO Box 444
Thuringowa Central
QLD 4812 AUSTRALIA
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Campbell Scientific do Brazil Ltda. (CSB)
Rua Luisa Crapsi Orsi, 15 Butantã
CEP: 005543-000 São Paulo SP BRAZIL
www.campbellsci.com.br • suporte@campbellsci.com.br
Campbell Scientific Canada Corp. (CSC)
11564 - 149th Street NW
Edmonton, Alberta T5M 1W7
CANADA
www.campbellsci.ca • dataloggers@campbellsci.ca
Campbell Scientific Centro Caribe S.A. (CSCC)
300 N Cementerio, Edificio Breller
Santo Domingo, Heredia 40305
COSTA RICA
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80 Hathern Road
Shepshed, Loughborough LE12 9GX
UNITED KINGDOM
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1, rue de Terre Neuve - Les Ulis
91967 COURTABOEUF CEDEX
FRANCE
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Avda. Pompeu Fabra 7-9, local 1
08024 Barcelona
SPAIN
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Please visit www.campbellsci.com to obtain contact information for your local US or International representative.
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