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AM16/32B Relay Multiplexer - Page 11
...Applications
The AM16/32B is used to a common output destined for Campbell Scientific's AM16/32A model.
AM16/32B Relay Multiplexer
1. In conjunction with a second AM16/32B, up...Measurements). The AM16/32B is the same as the AM16/32A model. In "2x32" mode the multiplexer can be measured. The datalogger program is a replacement for the datalogger. Up to be multiplexed by a ...
AM16/32B Relay Multiplexer - Page 12
... commercially available sensors.
As purchased, the AM16/32B is intended to the connecting of the mode switch carry shielded multiplexed sensor signals destined for a specific sensor is housed in a 10.2 x 23.9 x 4.6 cm (4.0 x 9.4 x 1.8 in diameter. The four ODD and EVEN COM terminals on the underside of your datalogger manual. The island of four terminals located near...
AM16/32B Relay Multiplexer - Page 14
In general, longer lead lengths necessitate longer measurement delays. Maximum Switching Current***:
500 mA
Contact Specifications
Initial contact resistance:
Up to datalogger manual for details. Refer to 1/8 in .
AM16/32B Relay Multiplexer
Dimensions Length: Width: Depth:
23.9 cm (9.4 in) 10.2 cm (4.0 in) 4.6 cm (1.8 in)
Weight:
693 g (1.5 lb) (approx.)
Mounting Tab Hole Spacing...
AM16/32B Relay Multiplexer - Page 15
.../32B Relay Multiplexer
Surge:
Complies with IEC61000-4-5, test level 3 (±2 kV, 2 ohms coupling impedance)
* Reset and clock protected by 8V varistors; +12V input is protected by +16V transzorb.
** Assumes sequential activation of multiplexers and that control operation of the multiplexer. If your application requires additional multiplexing capability, please consult Campbell Scientific...
AM16/32B Relay Multiplexer - Page 16
... port is grounded on 725 card with older PROMS, instruction Set Port (P20) is generally used .
6 A signal in the range of the sensor input channels. The CR800, CR850, CR3000, CR5000, and CR1000 use the PortSet() instruction to a datalogger control port. AM16/32B Relay Multiplexer
dataloggers connect to the AM16/32B as illustrated in FIGURE 4-1. MUCXAPBOLWEER SHIELD
CR800, CR850...
AM16/32B Relay Multiplexer - Page 19
... connects shield ground to the multiplexer terminals labeled "12V" (+) and "GND". The power supply is convenient to calculate the total power requirements of a system and the expected longevity of your datalogger operator's manual.
4.1.4 Power Supply
The AM16/32B requires a continuous 12 Vdc power supply for 5 ms
PortSet(5,0)
'Reset line set LO (enters "B Addressing" mode)
Delay...
AM16/32B Relay Multiplexer - Page 22
... Programming
SCWin Short Cut Program Builder for Windows can be connected to the common terminals for 20 ms. With panel switch set to generate a program and wiring diagram (FIGURE 5-1). AM16/32B Relay Multiplexer (1H, 1L, 2H, 2L) are connected with 32H, 32L.
SCWin can build many program configurations for Windows program builder)
12 When...
AM16/32B Relay Multiplexer - Page 23
... is stored.
This instruction must also specifically increment an index variable and use that designates the time interval between subscans.
13
SubScan/NextSubScan Syntax: SubScan (SubInterval, Units, Count)
NextSubScan
Where:
SubInterval: constant that variable to program the multiplexer are programmed with CRBasic. AM16/32B Relay Multiplexer
5.1 CRBasic Programming
The...
AM16/32B Relay Multiplexer - Page 24
A numeric or alphabetical code can be used for the SubInterval parameter. If you are in blue). A total of seven differential sensors are using for this instruction will measure the first seven sets of four on the multiplexer (numbers in the 4x16 mode, this SubScan() instruction. This CR1000 program uses the AM16/32B to measure 48 CS616 probes connected...
AM16/32B Relay Multiplexer - Page 25
...
'scan instructions every 5 sec
Battery (Batt_volt)
PanelTemp (Panel_temp,250)
'
'Set flag 1 High every 30 min (Note: User can manually set flag 1 high/low)
If IfTime (0,30,min)Then flag (1)=high
If Flag(1)=high Then
'measure 48ea CS616 probes on AM16/32B in (4x16) mode
PortSet (4,1)
'Set Mux Reset line High
'
I=1
'set of AM16/32B terminals.
AM16/32B Relay Multiplexer
Wiring...
AM16/32B Relay Multiplexer - Page 26
...)
TCDiff (TCTemp(),6,mV20C ,1,TypeT,TRef,True ,0,250,1.0,0)
Portset (1 ,1)
'Set C1 high to Enable Multiplexer
I
'Counter for setting Array element to correct value for mux measurement
'Declare Output Table for the CR3000. The program also measures 6 copper constantan thermocouples. CR5000
C1 C2 IX1 IXR 7H 7L
AM16/32B
Control/Common Sensor Terminals
Reset
Odd H
Clock
Odd...
AM16/32B Relay Multiplexer - Page 29
... to the right of the input location. The input location parameter of a measurement instruction is indexed if a (--) appears to be incremented in Edlog while cursor is that sequential sensors (i.e., those input to be used for details.
#6 Optional Processing -
AM16/32B Relay Multiplexer
NOTE
First pass: Second pass: Third pass:
Input locations
1 2 3 4 5 6
1
2
3
4
sensor...
AM16/32B Relay Multiplexer - Page 36
...completion resistor(s) are installed at the datalogger (FIGURE 6-3).
If measured excitation is completed within the sensor (for multiplexer use), then three probes per SET of measured excitation....the multiplexer COM terminals tie to analog input. The two pairs of COM terminals (ODD H, ODD L and EVEN H, EVEN L) are located at the datalogger panel (example: a Campbell Scientific 107...
AM16/32B Relay Multiplexer - Page 42
..., the enclosure should be taken to three thermocouples per SET; The low sides of each thermocouple are multiplexed in the measured temperatures.
• AM16/32B panel switch set to "4x16" mode. • Sensor to largely dissipate before it reaches the terminals. AM16/32B Relay Analog Multiplexer
Thermal Gradients - Installing the aluminum cover plate (FIGURE 6-10) helps to minimize...
AM16/32B Relay Multiplexer - Page 47
...). To minimize capacitive effects, Campbell Scientific recommends the use of your datalogger manual contains more information. Examples include soil moisture probes and thermistor probes. Installation
The standard AM16/32B may also be connected to the AM16/32B power ground ("GND") establishes this connection.
AM16/32B Relay Analog Multiplexer
7. General Measurement Considerations
Long...
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