Vaisala PTB220Case Manuale utente

PTB220TS / CASE

USER'S GUIDE

U370EN-1.1

JUNE 1999

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PUBLISHED BY

1999

No part of this manual may be reproduced in any form or

by any means, electronic or mechanical (including

photocopying), nor may its contents be communicated to a

third party without prior written permission of the

The contents of instruction manuals are subject to change

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Table of contents

PRODUCT DESCRIPTION................................................................................ 1

OPERATION ................................................................................................ 2

Operating voltage.................................................................... 2

Tilting frame............................................................................ 3

Battery..................................................................................... 3

RS232...................................................................................... 3

RS485...................................................................................... 4

LED Indicators......................................................................... 4

ASSEMBLING THE CASE AND AN EXISTING BAROMETER ........................... 5

TECHNICAL DATA........................................................................................... 7

Electronics............................................................................... 7

Electromagnetic compatibility................................................. 7

Battery..................................................................................... 7

Housing ................................................................................... 7

Accessories............................................................................. 7

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USER'S GUIDE___________________________________________________________________________

1 __________________________________________________________________________ U370EN-1.1

PRODUCT DESCRIPTION

The PTB220TS and a PTB220AxB2Ax barometer (order specified) are

assembled together at factory to become a Transfer/travelling standard.

It is also possible to assemble the customer's existing PTB220

barometer and separately ordered wooden case (PTB220CASE); see the

instructions on page 5. Please note, that there are certain requirements

for the PTB220 barometer to be compatible with the case. The

barometer should have the following features:

−1, 2 or 3 pressure transducers

−class A accuracy

−local display

−RS232/485 serial interface

This guide gives the basic operating instructions of the PTB220TS. It

does not, however, replace the operating manual of the PTB220 series

digital barometers. For detailed operation instructions and descriptions

refer to the User's Guide of the PTB220.

The PTB220TS includes the following parts

•a wooden (oak) carrying case

•wide and comfortable carrying handle

•two key locks

•a space reserved for small parts and documents in the case lid

•tilting frame where the barometer is mounted for table-top use

•incorporated sealed lead acid battery (YUASA NP0.8-12)

•power cord for recharging from car cigarette lighter socket

•DC plug for a local mains adaptor cord

•pressure connectors: for 1/8" tubing and a 5 mm connector

•9-pin sub D-connector (male)

•6 pin 5 mm screw-terminal bus (female)

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USER'S GUIDE___________________________________________________________________________

U370EN-1.1___________________________________________________________________________2

OPERATION

Remove the PTB220TS from the package and connect a wall adapter to

recharge the battery. Switch the power on. The barometer is now ready

for use. For detailed operation instructions and descriptions refer to the

User's Guide of the PTB220 series digital barometers.

NOTE The pressure port is closed, if the pressure connector is detached. For

measurement, the connector MUST be on place.

Operating voltage

DC voltage of 10...25 VDC is required to operate the barometer. A

power cord with a suitable plug-in connector is supplied with the

PTB220TS for use with a local power source. It is very important to

observe the polarity of the DC supply voltage.

NOTE Negative terminal is in the center.

If the wall adapter is used, the barometer will operate from the mains

and at the same time recharge the internal lead battery of the

PTB220TS. If no adapter is used the PTB220 barometer will operate

using the internal lead battery.

FIGURE 1Back plate of the PTB220TS tilting frame

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OPERATION_____________________________________________________________________________

VAISALA ______________________________________________________________________________3

Tilting frame

The barometer is mounted in a separate wooden case, tilting frame. It

can be set to three different positions: horizontal, ~20° and ~40°. For a

tabletop use, the tilting frame can be removed from the case by lifting

upwards.

NOTE The pressure connector has to be removed before closing the wooden

carrying case.

Battery

The battery gives a twelve-hour service period. The period is even

longer if the back light is not used. Recharging lasts about 12 hours and

is therefore typically done overnight.

Manufacturer: YUASA

Type: NP 0.8-12

NOTE To prolong the battery lifetime it is recommended to recharge the

battery when not in use.

RS232

The pin assignment of the RS232 serial interface D-connector of the

PTB220TS/CASE is as following:

1234

6789

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U370EN-1.1___________________________________________________________________________4

PIN SIGNAL

1 not used

2 TX

3 RX

4 not used

5 ground for RS 232

6 not used

7 not used

8 not used

9 not used

RS485

The pin assignment of the RS485 serial interface connector of the

PTB220TS/CASE is as following:

PIN SIGNAL

1not used

2RS485 HI

3not used

4not used

5RS485 LO

6not used

LED Indicators

There are four LED indicators in the back plate of the tilting frame. The

LED indicators inform the user of operating status of the barometer.

The green PWR led indicates that the PTB220 barometer is switched

ON.

The red BATT led indicates that the internal lead battery is being

recharged. When the battery is fully charged the led returns dark.

The yellow TX / RX leds indicate that there is activity in the serial line.

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ASSEMBLING THE CASE AND AN EXISTING BAROMETER_________________________________________

VAISALA ______________________________________________________________________________5

ASSEMBLING THE CASE AND AN

EXISTING BAROMETER

To assemble the existing PTB220 digital barometer and the wooden

case follow the instructions below.

NOTE! It is recommended to remove the cover hinge of the barometer

by loosening its screws. Then the cover can easily be detached after the

barometer is installed into the case.

1. Remove the wooden tilting frame from

the case.

2. Unscrew the base plate.

3. Attach the PTB220 onto the base with

four M6x16 screws.

4. Thread the flat cable between the

battery covering and the base plate.

Connect the cable to D-terminal.

5. Remove the original 1/8" pressure

fitting of the barometer. Then, attach

the pressure tubing connector to the

PTB220. It is recommended to use

Loctite 572 joint paste for sealing.

6. Place the assembly into the tilting

frame. Check that the flat cable and

the pressure tubing come out of the

back opening.

7. Attach the base with six screws.

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TECHNICAL DATA_________________________________________________________________________

6 __________________________________________________________________________ U370EN-1.1

8. Insert the battery into its

covering. Place the conducting

wire end to left-hand side.

9. Attach the spacers (2 pcs

M3x12). Fix the support bar of

the pressure port to the

spacers.

10. Attach the M3x18 spacers (4

pcs).

11. Connect the flat cable and the

battery conducting wires to the

electronics board.

12. Fasten the back plate by using

the M3x18 spacers and M3x5

screws.

13. Place the tilting frame back

into the case. The barometer is

now ready for use.

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ASSEMBLING THE CASE AND AN EXISTING BAROMETER_________________________________________

VAISALA ______________________________________________________________________________7

TECHNICAL DATA

Electronics

Supply voltage 10...25 VDC

Current consumption 50 mA in battery operation (display

backlight on)

300mA / 10V, 130mA / 25V

(recharging, battery empty)

100mA / 10V, 40mA / 25V (battery

full)

Communication interfaces RS232 full-/half-duplex

RS485 half-duplex

Connectors 9-pin female sub D-connector

6 pin 5 mm screw-terminal bus

Electromagnetic compatibility

PTB220TS/CASE with the PTB220 barometer is fully compatible

according to standards:

−EN50081-1 (EN 55022 class B)

−EN50082-1 (IEC801-2:1991, IEC 1000-4-3:1995 + ENV 50204,

EC 801-4:1988).

Battery

Type NP0.8-12 (12V / 800mAh)

Manufacturer YUASA

Operating time 12 hours continuous use (display

backlight on)

Recharging time 12 h (typical)

Fuse 1 A

Housing

Size (W x H x D) 25 cm x 24 cm x 22 cm

Weight 7 kg (including the barometer)

Accessories

Order code Description

17371 AC adapter for 230 VAC with EURO plug

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