Campbell CR10 PROM Instruction Manual download pdf (Page 10)

CSAT3 THREE DIMENSIONAL SONIC ANEMOMETER

5

4.3 LEVELING

Over flat level terrain, adjust the anemometer

head so that the bubble within the level is in the

bullseye. Over sloping terrain, adjust the

anemometer head so that the horizontal surface

that the bubble level is mounted on, is parallel

to the terrain.

Firmly grasp the sonic anemometer block,

loosen the bolt underneath the block, and adjust

the head accordingly. Finally, tighten the bolt

with a 9/16” wrench.

4.4 FINE WIRE THERMOCOUPLE

A fine wire thermocouple (model FW05 and

FWC-L35) can be mounted to the side of the

anemometer block to measure the temperature

fluctuations. Attach the female connector from

the FWC-L35, with the short screw (#2-56

0.437”, P/N 3514) that was provided with the

thermocouple cover, to the side of the

anemometer. Insert the male connector of the

FW05 into the female connector of the FWC-

L35. Finally, attach the thermocouple cover to

the anemometer block, using the two larger

screws (#4-40 0.75”, P/N 61), so that both the

FW05 and FWC-L35 connectors are covered.

All three screws are UNC threads.

5. WIRING

There are four military style connectors on the

CSAT3 electronics box. They are labeled as

+12V SDM, RS-232, Transducer Head, and

Analog Output. Connect the cable from the

anemometer head to the electronics box

labeled Transducer Head. The anemometer

head cable is 2.13 m (7 ft) in length. Each of

the signal cables is 7.62 m (25 ft) in length.

Connect the appropriate signal cable to the

electronics box. See the Tables 5-1 through

5-7 for details on the wire color scheme.

NOTE: Before extending the SDM signal

cable, read Appendix D.

NOTE: Short haul modems may be used to

lengthen the RS-232 communications

cable. Short haul modems do not include

an RTS signal. The CSAT3's RS-232

drivers can be asserted by a software

setting in the CSAT3. This setting will

always power the RS-232 drivers,

independent of the RTS line. Spark gaps

(model 6536 and 6361) may be required to

protect against transients when using short

haul modems.

TABLE 5-1. CSAT3 Power

Battery

Terminal

Description Color

Positive 12 VDC Red

Negative Ground Black

TABLE 5-2. CSAT3 SDM Output to a

CR23X and CR10(X) Datalogger

Channel Description Color

C1 SDM Data Green

C2 SDM Clock White

C3 SDM Enable Brown

G Digital Gnd Black

G shield Clear

TABLE 5-3. CSAT3 SDM Output to a

21X Datalogger

Channel Description Color

1H SDM Data Green

C1 10 K resistor to 1H

C2 SDM Clock White

C3 SDM Enable Brown

Digital Gnd Black

shield Clear

TABLE 5-4. CSAT3 SDM Output to a

CR9000 Datalogger

CR9000

9080 DB9

Pin

Datalogger

Description Color

8 SDM Data Green

7 SDM Clock White

6 SDM Enable Brown

2 Digital Gnd Black/Clear

TABLE 5-5. CSAT3 RS-232 Output

Pin Out

CSAT3

DB9

Pin

PC

DB9

Pin

Description

2

→

2 Receive Data

3

←

3 Transmit Data

5 5 ground

7

←

7 Request to Send

8

→

8 Clear to Send

1 2 ... 5 6 7 8 9 10 11 12 13 14 15 ... 29 30

Comments to this Manuals

No comments