Campbell CS500-LC Manuel utilisateur

INSTRUCTION MANUAL

CS500-LC Temperature and

Relative Humidity Probe

for MetData1

4/97

Campbell Scientific, Inc.

Warranty and Assistance

The CS500-LC TEMPERATURE AND RELATIVE HUMIDITY PROBE

FOR METDATA1 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

CAMPBELL SCIENTIFIC, INC. does not accept collect calls.

CS500-LC TEMPERATURE AND RELATIVE HUMIDITY PROBE

FOR METDATA1

1. GENERAL

The Model CS500 temperature and relative

humidity probe uses a 1000 ΩPRT (DIN 43760B)

to measure temperature and a Vaisala capacitive

humidity sensor (INTERCAP) to measure relative

humidity. Internal signal conditioning provides an

output of 0 to 1000 mV for both temperature (-40°C

to +60°C) and relative humidity (0% to 100%).

1.1 SPECIFICATIONS

Temperature Measurement Range: -40°C to +60°C

Temperature Accuracy: ±0.5°C @ -40°C,

±0.4°C @ -20°C, ±0.6°C @ +60°C

Relative Humidity Range (for the specified

accuracy): 10% to 90%

Relative Humidity Accuracy: ±2.0% @ 10%

±3.0% @ 90%

Typical Long-Term Stability: Better than

±1.0% per year

Supply Voltage: 7-28 VDC

Current Consumption: Typically < 2 mA

Diameter: 0.47 inches (12 mm)

Length: 2.66 inches (68 mm)

Housing Material: ABS Plastic

2. INSTALLATION

The CS500 must be housed inside a solar

radiation shield when used in the field. The

41301 6-Plate Radiation Shield (see Figure 1)

mounts to a CM6/CM10 tripod. The CS500 is

held within the 41301 with a mounting clamp

(See Figure 2).

The 41002 12-Plate Radiation Shield (see

Figure 3) mounts to a CM6/CM10 tripod. The

UT12VA 12-Plate Radiation Shield mounts to a

UT3 or UT930 tower with the UT018 horizontal

mounting arm.

The CS500 is held in place, within the 41002 or

UT12VA Radiation Shield, via an adaptor,

Model 41381. The 41381 adaptor is threaded

onto the bottom of the CS500 (see Figure 4).

The 41004 12-Plate Radiation Shield, used with

207 probes, can be converted to a 41002 with

P/N 6638.

FIGURE 1. CS500 and 41301 Radiation

Shield on a CM6/CM10 Tripod Mast

FIGURE 2. CS500 and 41301

Radiation Shield

Mounting Clamp

CS500-LC TEMPERATURE AND RELATIVE HUMIDITY PROBE FOR METDATA1

FIGURE 3. CS500 and 41002 Radiation

Shield on a CM6/CM10 Tripod Mast

FIGURE 4. Radiation Shield, CS500, and

41381 Adaptor

3. CONNECTION

The CS500 cable is attached to the MetData1

connector labeled #1. Ensure internal jumper

#1 is open as shown in Figure 5.

CS800Default

HMP35C

LI190SB

LI200S

CS500\HMP45C

Open

#1 #2 #3

FIGURE 5. MetData1 Jumper Configuration

4. DATALOGGER PROGRAMMING

NOTE: Information in this section is not

necessary when programming the

MetData1 with the Short Cut Program

Builder software.

The CS500 is measured by two single-ended

voltage instructions (Instruction 1). The

multiplier and offset for temperature in degrees

Celsius is 0.1 and -40 respectively. The

multiplier and offset for temperature in degrees

Fahrenheit is 0.18 and -40 respectively. The

multiplier and offset for relative humidity is 0.1

and 0 respectively.

Instruction 86 sets control port 1 high. Control

port 1 turns on the 12 V switch circuit which

supplies power to the CS500.

MetData1 Datalogger Program Instructions

01: P86 Do

01: 41 Set high Port 1

02: P22 Excitation with Delay

01: 3 EX Chan

02: 0 Delay w/EX (units=.01sec)

03: 10 Delay after EX (units=.01sec)

04: 0 mV Excitation

41002 12-Plate

Radiation Shield

Lock Nut Tightens

Against Adapter

CS500

41381 Ada

ter

Tripod Mast

Internal Threads Secure

the CS500 to Adapter

CS500-LC TEMPERATURE AND RELATIVE HUMIDITY PROBE FOR METDATA1

03: P1 Volt (SE)

01: 1 Rep

02: 25 2500 mV 60 Hz rejection

Range

03: 2 IN Chan

04: 1* Loc [:Temp_C ]

05: .1** Mult

06: -40 Offset

04: P1 Volt (SE)

01: 1 Rep

02: 25 2500 mV 60 Hz rejection

Range

03: 1 IN Chan

04: 2* Loc [:RH_prc ]

05: .1 Mult

06: 0 Offset

05: P86 Do

01: 51 Set low Port 1

* Proper entries will vary with input location

assignment.

** For degrees Fahrenheit use a multiplier

of 0.18.

5. MAINTENANCE AND CALIBRATION

The CS500 probe requires minimal

maintenance. Check monthly to make sure the

radiation shield is free from debris. The white

screen on the sensor’s end should also be

cleared of dust and debris.

When installed in close proximity to the ocean

or other bodies of salt water (e.g., Great Salt

Lake), a coating of salt (mostly NaCl) may build

up on the radiation shield, sensor, filter and

even the chip. NaCl has an affinity for water.

The humidity over a saturated NaCl solution is

75%. A buildup of salt on the filter or chip will

delay or destroy the response to atmospheric

humidity.

The filter can be rinsed gently in distilled water.

If necessary, the chip can be removed and

rinsed as well. Do not scratch the chip while

cleaning or drying. To speed up the drying

process you may lay the chip on a clean paper

towel so it will absorb the water away.

Replace the humidity chip every two years.

Contact Campbell Scientific, Inc. at

(801) 753-2342 for replacements.

CS500-LC TEMPERATURE AND RELATIVE HUMIDITY PROBE FOR METDATA1

This is a blank page.

Campbell Scientific Companies

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Logan, Utah 84321

UNITED STATES

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UNITED KINGDOM

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Please visit www.campbellsci.com to obtain contact information for your local US or International representative.

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