Campbell SDM-CD16AC User manual

SDM-CD16AC
16-
Channel AC/DC
Relay Controller
Revision: 9/19
Copyright © 1987 – 2019
Campbell Scientific, Inc.

Limited Warranty
“Products manufactured by CSI are warranted by CSI to be free from defects in
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exclusive remedy under this warranty. The Customer assumes all costs of
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Safety
DANGER — MANY HAZARDS ARE ASSOCIATED WITH INSTALLING, USING, MAINTAINING, 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 COMPLETELY ASSEMBLE, 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.com or by
telephoning [phone] (USA). You are responsible for conformance with governing codes and regulations, including safety
regulations, and the integrity and location 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 concerns 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 or underground utility lines.
•Maintain a distance of at least one-and-one-half times structure height, 20 feet, or the distance
required 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.
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.

i
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. Function ..................................................................... 1
2. Control Specifications............................................... 2
3. Power Considerations............................................... 2
4. Installation ................................................................. 3
4.1 Wiring ..................................................................................................4
4.1.1 SDM-CD16AC Power and Control Connections..........................4
4.1.2 Controlled Device to SDM-CD16AC Connections ......................5
4.1.3 Motor Control ...............................................................................6
5. Address Selection Switches ..................................... 7
6. Data Logger Programming........................................ 8
6.1 CRBasic Programming.........................................................................8
6.1.1 SDMCD16AC() Instruction..........................................................8
6.1.2 SDMSpeed() Instruction ...............................................................9
7. Theory of Operation .................................................. 9
8. Program Examples .................................................. 10
8.1 CRBasic Example ..............................................................................10
8.1.1 Controlling Two SDM-CD16ACs ..............................................10
8.1.2 Control Temperature and Fans....................................................10
Figures
1-1. SDM-CD16AC face panel ...................................................................1
3-1. Connection block diagrams..................................................................3
4-1. Switch operation...................................................................................5
4-2. Typical wiring application ...................................................................6
4-3. SDM-CD16AC relay outputs to MCC .................................................7
5-1. Addressing ...........................................................................................8
Tables
4-1. Data Logger to SDM-CD16AC Connections (see caution) .................4

Table of Contents
ii
CRBasic Examples
8-1. Controlling Two SDM-CD16ACs......................................................10
8-2. Using an Array to Set SDM-CD16AC Control Outputs ....................11
8-3. Using an Integer to Set SDM-CD16AC Control Outputs ..................12

1
SDM-CD16AC 16 Channel AC/DC
Controller
1. Function
FIGURE 1-1. SDM-CD16AC face panel
The SDM-CD16AC has 16 AC/DC relay control ports (see FIGURE 1-1). Each
relay port can be controlled by a data logger or controlled manually with a manual
override toggle switch.
The toggle switch has three positions: ON and OFF for manual override, and
AUTO for data logger control. In the ON position, the common (COM) and
normally open (NO) contacts are closed (see FIGURE 4-1). In the AUTO
position, the state of the relays are controlled by the data logger control ports.
The SDM-CD16AC is a synchronously addressed data logger peripheral. Three
ports on the data logger are used to address the SDM-CD16AC, then clock out
the desired state of each of the 16 control ports. Up to 16 SDM-CD16ACs may
be addressed, making it possible to control a maximum of 256 ports from the
three data logger ports.
Compatible Campbell Scientific data loggers use the CRBasic instruction
SDMCD16AC() to control the SDM-CD16AC.

SDM-CD16AC 16 Channel AC/DC Controller
2
2. Control Specifications
Operating temperature: –25 to 50 °C
Operating voltage: 12 VDC nominal (11 to 18 VDC)
Current drain at 12 VDC:6 mA quiescent; 45 mA per active LED
(switch on or auto active)
Total cable length: Cable lengths should be kept as short as
possible; 6 m (20 ft) (for many
applications); lengths longer than 6 m
(20 ft) may be possible for CRBasic data
loggers if the SDMSpeed() instruction is
used
Toggle switch: ON/OFF manual override; AUTO for data
logger control
RELAY SPECIFICATIONS
Arrangement: Single pole double throw
Break before make
Contact material: Gold-clad silver
Individual contact rating: 5 A at 30 VDC, .3 A at 110 VDC, 5 A
1/10 HP at 125 VAC, 5 A 1/6 HP at
277 VAC
Coil voltage: 11 to 18 VDC
Coil resistance: 360 Ohms ±10%
Expected life (contact closures): Mechanical 107
Actuation/release time: Approx. 4 ms
Standards: Underwriters Laboratories (UL) listed
product (E162021)
Canadian Underwriters Laboratories
(CUL) listed product (5Z21)
3. Power Considerations
The SDM-CD16AC power requirements are large compared to most Campbell
Scientific products. For most applications, an external power supply (see
FIGURE 3-1) is recommended to power the SDM-CD16AC.
For some applications, it may be convenient to use the data logger supply to
power the SDM-CD16AC (see FIGURE 3-1). For long-term applications, the
lead acid power supply available with Campbell Scientific data loggers should
be used, allowing the batteries to be float charged. It is not recommended that
the data logger alkaline supply be used to power the SDM-CD16AC for long-
term applications due to its large power requirements.

SDM-CD16AC 16 Channel AC/DC Controller
3
FIGURE 3-1. Connection block diagrams
4. Installation
•The SDM-CD16AC must be installed in an enclosure that provides a
pollution degree 2 environment (normally, only nonconductive pollution;
however, a temporary conductivity caused by condensation may be
expected). All Campbell Scientific enclosures meet this requirement.
•Use copper conductors only.
•Wire Range: 30 −14 AWG
•Tightening Torque: 5 −7 in/lb
•Use minimum 60/75 °C wire.
•Input power must be connected to a class 2 supply only. All Campbell
Scientific power supplies meet the class 2 supply requirements.
Cables connecting the terminals of the data logger and SDM
device should be kept as short as possible to minimize the
risk of corruption of the signals and damage from induced
surges. Where long cable runs (>3 m) are unavoidable and
the cables run outside, some extra protection may be
required for the SDM control terminals. Please contact
Campbell Scientific for further advice. When connecting
wires to the SDM signal terminals, please ensure they are
at ground potential before making the connection, by
touching them to the earth terminal.
For data logger connections, see TABLE 4-1.
CAUTION

SDM-CD16AC 16 Channel AC/DC Controller
4
Multiple SDM-CD16ACs may be wired in parallel by connecting the data
logger side of one SDM-CD16AC to the next. The CABLE5CBL-L or an
equivalent cable is used to connect the module to the data logger. A 0.3 m (1 ft)
cable length should be sufficient when both data logger and SDM-CD16AC are
housed within an ENC12/14; a 0.6 m (2 ft) length may be required if the data
logger and SDM-CD16AC are housed at opposite ends of an EN16/18
enclosure.
CRBasic data loggers should use the SDMSpeed() instruction if the cable
length is longer than 6 m (20 ft).
SDM cables in noisy environments need to be suitably shielded.
4.1 Wiring
4.1.1 SDM-CD16AC Power and Control Connections
Refer to FIGURE 3-1 and TABLE 4-1 for SDM-CD16AC operating power and
control connections to the data logger.
TABLE 4-1. Data Logger to SDM-CD16AC Connections
(see caution)
Connection
Order
SDM-CD16AC
Data Logger
(see notes)
Function
First 12V 12 V on data logger or Power
External supply
Second G Gnd Common ground
C1
SDM-C1
(CR3000,
CR5000) or C1 (other
data loggers)
Data
C2
SDM-C2 (CR3000,
CR5000) or C2 (other
data loggers)
Clock
C3
SDM-C3
(CR3000,
CR5000) or C3 (other
data loggers)
Enable
The order in which connections are made is critical. Always
connect 12 V first, followed by ground, then Control Ports.
The CR6 allows SDM operation through control ports C1, C2, and
C3 as shown in TABLE 4-1. In addition, the Uterminals on the
CR6 may be used in the same manner. U1–U3, U5–U8, and U9–
U11 are usable in the same Data, Clock, Enable order as the C
terminals.
NOTE
CAUTION
NOTE

SDM-CD16AC 16 Channel AC/DC Controller
5
On a CR9000X, SDMs connect to the ports on the CR9032 CPU
Module, and on a CR9000, SDMs connect to the ports on the
CR9080 PAM Module.
4.1.2 Controlled Device to SDM-CD16AC Connections
ELECTROCUTION HAZARD! USE EXTREME CAUTION
WHEN WORKING WITH HIGH VOLTAGE INPUTS. DO
NOT COME IN CONTACT WITH HOT LEADS!
FIGURE 4-1 shows how the switches in each channel operate. NO means
“normally open”, NC means “normally closed”. COM means “common” to
NO and NC.
Position of Contacts When Position of Contacts When
Coil is Energized (ON) Coil Is Not Energized (OFF)
FIGURE 4-1. Switch operation
In most applications, the SDM-CD16AC acts as a switch (controllable break)
in one wire of the circuit powering the controlled device. One side of this break
may have power (hot). FIGURE 4-2 shows an example.
NOTE
DANGER!

SDM-CD16AC 16 Channel AC/DC Controller
6
Device
Neutral (-)
Hot (+)
NO
NC
COM
FIGURE 4-2. Typical wiring application
4.1.3 Motor Control
The SDM-CD16AC is a UL approved Start/Stop motor controller. In the figure
below, a typical 5 Amp 115 VAC relay contact circuit shows how to control a
three phase motor starter in a Motor Control Center (MCC). Typically, the data
logger will automatically command the appropriate relay to energize the motor
starter. The relay in the SDM-CD16AC will remain latched until the data
logger program commands that the motor be turned off, at which time the relay
will open the circuit to the motor starter and the motor will stop.
The SDM-CD16AC can be used to control three phase pump motors, air
blowers, and large control valves in the same fashion.

SDM-CD16AC 16 Channel AC/DC Controller
7
FIGURE 4-3. SDM-CD16AC relay outputs to MCC
5. Address Selection Switches
Each SDM-CD16AC can have 1 of 16 addresses. Shipped from the factory, the
address is set at 00. The following table shows switch position and the
corresponding address (see FIGURE 5-1).
Switch A
0 1 2 3
Switch B
0 00 01 02 03
1 10 11 12 13
2 20 21 22 23
3 30 31 32 33
Base 4 Address Matrix
(00, 01, 02 . . . 32, 33)
DATA LOGGER
PS100
POWER
SUPPLY

SDM-CD16AC 16 Channel AC/DC Controller
8
FIGURE 5-1. Addressing
6. Data Logger Programming
In CRBasic, the SDMCD16AC() instruction is used to control the SDM-
CD16AC. Data loggers that are programmed with CRBasic include the CR6,
CR800, CR850, CR1000X, CR1000, CR3000, CR5000, and CR9000(X). The
SDMSpeed() instruction should also be used if the cable length is longer than
20 ft.
6.1 CRBasic Programming
6.1.1 SDMCD16AC() Instruction
Syntax
SDMCD16AC(Source, Reps, SDMAddress)
Remarks
A port on an SDM-CD16AC is enabled/disabled (turned on or off) by sending
a value to it using the SDMCD16AC() instruction. A non-zero value will
enable the port; a zero value disables it. The values to be sent to the CD16AC
are held in the Source array.
The SDMCD16AC() instruction has the following parameters:
Source: The Source parameter is an array which holds the values that will be
sent to the SDM-CD16AC to enable/disable its ports. An SDM-CD16AC has
16 ports; therefore, the source array must be dimensioned to 16 times the
number of repetitions (the number of SDM-CD16AC devices to be controlled).
As an example, with the array CDCtrl(32), the value held in CDCtrl(1) will be
sent to port 1, the value held in CDCtrl(2) will be sent to port 2, etc. The value
held in CDCtrl(32) would be sent to port 16 on the second SDM-CD16AC.

SDM-CD16AC 16 Channel AC/DC Controller
9
If the Source parameter is defined as a Long variable, but it is dimensioned
less than 16X Reps, Source will act as a binary control for the instruction
whose bits 0…15 will specify control ports 1…16, respectively. In this
situation, Source (1) will be used for the first Rep; Source (2) will be used for
the second Rep, and so on.
Reps: The Reps parameter is the number of SDM-CD16AC devices that will
be controlled with this instruction.
SDMAddress: The SDMAddress parameter is used to define the address of the
CD16AC that will be controlled with this instruction. Valid SDM addresses are
0 through 14. Address 15 is reserved for the SDMTrigger() instruction. If the
Reps parameter is greater than 1, the data logger will increment the SDM
address for each subsequent device that it communicates with.
6.1.2 SDMSpeed() Instruction
The SDMSpeed() instruction is used to change the speed at which data is
clocked to and from attached SDM devices. Slowing down the clock rate may
be necessary when many SDM devices are connected to the data logger, or
even when a single SDM device is connected over a long cable.
•Many applications do not require the use of SDMSpeed().
•If intermittent communications with several devices connected at once is
experienced, or when using long cables, use SDMSpeed() to increase the
bit period above the default. Try doubling the bit period until a stable link
is achieved.
•To maximize communication speeds because of skipped scans, decrease
the bit period.
Changing the clock rate is accomplished by changing the bit period of the
clock signal. A short bit period equates to a faster clock rate and faster data
transfer. A long bit period equates to a slower clock rate and a slower data
transfer more suitable for long cable lengths or many connected devices.
The syntax of this instruction is as follows:
SDMSpeed(BitPeriod)
The BitPeriod argument can be a constant or variable integer. If the
SDMSpeed() instruction is not included in the program, the default bit period
for the clock line will be used. If the bit period specified is smaller than the
minimum or larger than the maximum, the data logger will default to the
minimum or maximum bit period, respectively. Refer to CRBasic Editor Help
for the default, minimum, and maximum bit period for each data logger.
7. Theory of Operation
The SDM-CD16AC is a synchronously addressed peripheral. C2 and C3,
driven high by the data logger, initiate a cycle. While holding C3 high, the data
logger drives C2 as a clock line and C1 as a serial data line. The data logger

SDM-CD16AC 16 Channel AC/DC Controller
10
shifts out a data bit on C1 (LSB first) on the falling edge of the C2 clock. The
SDM-CD16AC shifts in the C1 data bit on the rising edge of the C2 clock.
The first 8 bits clocked out represent the SDM-CD16AC address. If the address
matches the SDM-CD16AC's address, the SDM-CD16AC is enabled. If
enabled, the next 16 bits are shifted into the SDM-CD16AC, each bit
controlling one port, the first of which controls port 1.
When the 16 control bits are clocked in, C2 is held high while C3 is pulsed low
then high to latch the control bits. The data logger then lowers both C3 and C2
to complete the cycle.
8. Program Examples
8.1 CRBasic Example
8.1.1 Controlling Two SDM-CD16ACs
In the following CR1000X program example, a counter is used to fill an array
called src() that will control two SDM-CD16ACs.
CRBasic Example 8-1. Controlling Two SDM-CD16ACs
'Dimension Variables
Public src(32)
Dim i, count, mask(16)
'Program
BeginProg
for i=1 to 16
mask(i) = 2^(i-1)
next i
Scan(20,msec,2,0)
count = count + 1
for i=1 to 32
src(i) = count AND mask(((i-1) MOD 16) +1)
next i
SDMCD16AC(src(),2,1)
NextScan
EndProg
8.1.2 Control Temperature and Fans
In this example, the SDM-CD16AC is used to control the temperature between
23 and 28 °C in each of 5 greenhouses. In each greenhouse, the SDM-CD16AC
controls a heating unit, a refrigerating unit, and an air-mixing fan according to
the following conditions.
Heating unit: Activate when temperature < 23.5 °C. Deactivate when
temperature > 25.5 °C
Cooling unit: Activate when temperature > 27.5 °C. Deactivate when
temperature < 24.5 °C
Mixing fan: Activate whenever the heating or cooling units are activated.
Activate for 5 minutes out of every 15 minutes.

SDM-CD16AC 16 Channel AC/DC Controller
11
The program assumes the temperature measurements have been made, and the
average temperature for each greenhouse is computed and residing in the
appropriate variable
Input Location assignments are as follows:
Variable Array
Description
Temp(5)
Avg temp, greenhouse 1..5
Heat(5)
Heater control, greenhouse 1..5 SDM-CD16AC
Port 1..5
Cool(5)
Cooler control, greenhouse 1..5 SDM-CD16AC
Port 6..10
Fan(5)
Fan control, greenhouse 1..5 SDM-CD16AC
Port 11..15
CD16_Output(16)
EXAMPLE 1: the actual values used to control
the SDM-CD16: CD16_Output(I), I = 1 to 5 are
for Heat, I = 6 to 10 are for Cooling, I= 11 to 15
are for Fans
CD16_Output as Long
EXAMPLE 2: the actual value used to control
SDMCD the CD16_Output bits set the SDM-
CD16AC ports. bits 0 to 4 are for ‘Heat, 5 to 9 are
for Cooling, 10 to 14 are for Fans
CRBasic Example 8-2 uses an array of values to set the SDM-CD16AC control
outputs:
CRBasic Example 8-2. Using an Array to Set SDM-CD16AC Control Outputs
'Program name: SDMCD16Example1.CR1
'\\\\\\\\\\\\\\\\\\\\\\\\\ DECLARATIONS /////////////////////////
Public Flag(8) as boolean
Public I
Public Temp(5)
Public Heat(5)
Public Cool(5)
Public Fan(5)
'CD16_Output(I), I = 1 to 5 are for Heat, I = 6 to 10 are for Cooling,
'I = 11 to 15 are for Fans
Dim CD16_Output(16)
'\\\\\\\\\\\\\\\\\\\\\\\\\\\ PROGRAM ////////////////////////////
BeginProg
Scan(5,Sec, 3, 0)
For I = 1 to 5
If (Temp(I) < 23.5) Then
Heat(I) = 1
ElseIf (Temp(I) >= 25.5) Then
Heat(I) = 0
EndIf
If (Temp(I) >= 27.5) Then
Cool(I) = 1
ElseIf (Temp(I) < 24.5) Then
Cool(I) = 0
EndIf
If (Heat(I) <> 0) OR (Cool(I) <> 0) Then
Fan(I) = 1
Else
Fan(I) = 0

SDM-CD16AC 16 Channel AC/DC Controller
12
EndIf
Next I
If TimeInToInterval(10,15,Min) Then Flag(2) = True
If TimeInToInterval(0,15,Min) Then Flag(2) = False
If Flag(2) = True then
For I = 1 to 5
Fan(I) = 1
Next I
EndIf
For I = 1 to 5
CD16_Output(I) = Heat(I)
CD16_Output(I+5) = Cool(I)
CD16_Output(I+10) = Fan(I)
Next I
SDMCD16AC(CD16_Output(), 1, 0)
NextScan
EndProg
CRBasic Example 8-3 uses an integer instead of an array to set the SDM-
CD16AC control outputs:
CRBasic Example 8-3. Using an Integer to Set SDM-CD16AC Control Outputs
'Program name: SDMCD16Example2.CR1
'\\\\\\\\\\\\\\\\\\\\\\\\\ DECLARATIONS /////////////////////////
Public Temp(5)
Public TimedFanOn as Boolean
Dim I as Long
Dim CD16_Output as Long
'Note: CD16_Output bits set the SDM-CD16AC ports. bits 0 to 4 are for Heat,
'5 to 9 are for Cooling, 10 to 14 are for Fans
'\\\\\\\\\\\\\\\\\\\\\\\\\\\ PROGRAM ////////////////////////////
BeginProg
Scan(5,Sec, 3, 0)
For I = 1 to 5
If (Temp(I) < 23.5) Then 'Set appropriate Heater Bit High:
CD16_Output = CD16_Output OR 2^(I-1)
ElseIf (Temp(I) >= 25.5) Then 'Set appropriate Heater Bit Low:
CD16_Output = CD16_Output AND (&H7FFF - 2^(I-1))
EndIf
If (Temp(I) >= 27.5) Then 'Set appropriate Cooler Bit High:
CD16_Output = CD16_Output OR 2^(I+4)
ElseIf (Temp(I) < 24.5) Then 'Set appropriate Cooler Bit Low:
CD16_Output = CD16_Output AND (&H7FFF - 2^(I+4))
EndIf
Next I
CD16_Output = (CD16_Output AND&H3FF) 'Set all Fan Bits Low
'Turn on Fan Bits for active Heaters or Coolers:
CD16_Output = CD16_Output OR (((CD16_Output*2^5) OR (CD16_Output*2^10)) AND &H7C00)
If TimeInToInterval(10,15,Min) Then TimedFanON = True
If TimeInToInterval(0,15,Min) Then TimedFanON = False
If TimedFanON = True Then CD16_Output = CD16_Output OR &H7C00
SDMCD16AC(CD16_Output(), 1, 0)
NextScan
EndProg

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Phone: [phone]
Email: [email protected]
Website: www.campbellsci.co.za
Southeast Asia
Location: Bangkok, Thailand
Phone: [phone]
Email: [email protected]
Website: www.campbellsci.asia
Spain
Location: Barcelona, Spain
Phone: [phone]
Email: [email protected]
Website: www.campbellsci.es
UK
Location: Shepshed, Loughborough, UK
Phone: [phone]
Email: [email protected]
Website: www.campbellsci.co.uk
USA
Location: Logan, UT USA
Phone: [phone]
Email: [email protected]
Website: www.campbellsci.com