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LLAC4 Four-channel, Low-Level AC Conversion Module - Page 3
...The warranty for installation services performed by surface carrier prepaid within the continental United States of Campbell's product warranty. Campbell's obligation under this warranty is not liable for twelve (12) months from defects in lieu of all other locations, Campbell will return such products by Campbell such as programming to customer specifications, electrical connections to...
LLAC4 Four-channel, Low-Level AC Conversion Module - Page 4
...fill out a "Statement of the problem, an RMA number will be returned without prior authorization. Campbell Scientific reserves the right to refuse service on the outside of product receipt or... to the customer at www.campbellsci.com/repair. The following contact information is :
CAMPBELL SCIENTIFIC, INC. directly. Affiliate companies handle repairs for customers within three days of the ...
LLAC4 Four-channel, Low-Level AC Conversion Module - Page 5
...Measurements 2 4. Program Examples 4 Figures
1. LLAC to specific sections.
1. Specifications 2 3. LLAC4 four-channel, low-level AC conversion module 1 2. Use the PDF reader bookmarks tab for links to TTL 3
Tables
1. General Description 1 2. Wiring 3 5. Sensor Output Frequencies 2 2. Control Port Compatibility 3
i LLAC4 Table of Contents
PDF viewers: These page numbers...
LLAC4 Four-channel, Low-Level AC Conversion Module - Page 7
... low-level AC signals a datalogger can monitor. LLAC4 Four-Channel, Low-Level AC Conversion Module
1. General Description
The LLAC4 is especially useful for wind profiling applications.
LLAC4 four-channel, low-level AC conversion module
1 Compatible...-MA, 05305 Wind Monitor-AQ, 03001 Wind Sentry Set, and 03101 Wind Sentry Anemometer. P1
P2 FROMPS3ENSOR
P4
12V G
TO D1
DADT2ALODG3GER
D4...
LLAC4 Four-channel, Low-Level AC Conversion Module - Page 8
.... Measurements
Sensors, such as the low-level AC on the datalogger's control ports. TABLE 1.
LLAC4 Four-Channel, Low-Level AC Conversion Module
2. The frequency response of rotation.
Table 2 shows some common dataloggers and their compatible control port specifications.
2 This AC signal is proportional to ±0.5V
16 mV @ 1 Hz
±20 V
8.0 W x 5.4 H x 2.5 D cm...
LLAC4 Four-channel, Low-Level AC Conversion Module - Page 9
... other dataloggers would be applied to a 0-5 V square wave on the LLAC4. The LLAC4 also requires that 12 V be appropriate choices.
D1 can make high frequency...wired to an appropriate datalogger control port that have three wires: signal, reference, and drain. P4 on the LLAC4 and the reference and drain wires to read either type of anemometer in high wind situations. A low-level AC...
LLAC4 Four-channel, Low-Level AC Conversion Module - Page 10
...C5
PLL
C6
C1/SDI-12
C7
C2
C8
P_SW
G
G
CR1000 Example Program
'CR1000 Series Datalogger 'LLAC4 Sample Program 'Record 10-minute average wind speed in m/s for: '1 RM Young 05103-L Wind Monitor ...RM Young 05103, 05106, 05305, propeller type anemometers, and RM Young 03101 cup anemometer. LLAC4 Four-Channel, Low-Level AC Conversion Module
5. Program Examples
Using the CR1000, let's measure...
LLAC4 Four-channel, Low-Level AC Conversion Module - Page 11
... Series Datalogger
Public Pulse_LLAC(2)
BeginProg Scan (1,Sec,0,0) 'Measure low level AC signal (RMY 05103) on LLAC4 wired to C7 and C8 on CR5000 TimerIO (Pulse_LLAC,11000000,88000000,10,mSec) 'NOTE: Only ports CR5000 C7 and C8 'support Function 8 (frequency in m/s for: '1 RM Young 05103-L Wind Monitor Anemometer '1 RM Young 05106-L Marine Wind...
LLAC4 Four-channel, Low-Level AC Conversion Module - Page 12
LLAC4 Four-Channel, Low-Level AC Conversion Module 'Main Program BeginProg Scan (1,Sec) PulseCount (RMY05103WS,P_LL,0,1,0.098,0.0) PulseCount (RMY05106WS,C1,0,1,0.098,0.0) PulseCount (RMY05305WS,C2,0,1,0.1024,0.0) PulseCount (RMY03101WS,P_SW,0,1,0.750,0.20) If RMY03101WS < 0.21 Then RMY03101WS = 0.0 EndIf CallTable WindSpd NextScan EndProg
6
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