Vaisala PTB210 SERIES User manual

M210669EN-E
User Guide
Digital Barometers with Serial Output
PTB210 Series

PUBLISHED BY
Vaisala Oyj
Vanha Nurmijärventie 21, FI-01670 Vantaa, Finland
P.O. Box 26, FI-00421 Helsinki, Finland
[phone]
Visit our Internet pages at www.vaisala.com.
© Vaisala 2021
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information contained in this document.
Vaisala makes no representations on this
document’s compliance with the local
rules and regulations applicable at any
given time, and hereby disclaims any and
all responsibilities related thereto.
This document does not create any legally
binding obligations for Vaisala towards
customers or end users. All legally binding
obligations and agreements are included
exclusively in the applicable supply
contract or the General Conditions of Sale
and General Conditions of Service of
Vaisala.

Table of contents
1. About this document.....................................................................................5
1.1 Version information.......................................................................................... 5
1.2 Documentation conventions........................................................................... 5
2. Product overview............................................................................................ 6
2.1 PTB210 product overview................................................................................6
2.2 Safety..................................................................................................................8
2.3 Trademarks........................................................................................................ 8
3. Installation..........................................................................................................9
3.1 Mounting PTB210..............................................................................................9
3.1.1 Static pressure head................................................................................ 10
3.2 Connections.......................................................................................................11
4. Operation..........................................................................................................14
4.1 Settings.............................................................................................................14
4.1.1 .BAUD setting baud rate......................................................................... 14
4.1.2 Setting serial communication parameters............................................ 15
4.1.3 .ID setting identification code.................................................................15
4.1.4 .PMIN / .PMAX setting pressure limits................................................... 15
4.1.5 .MPM measurements per minute............................................................16
4.1.6 .AVRG defining averaging....................................................................... 16
4.2 Operating commands..................................................................................... 16
4.2.1 .P outputting single message................................................................. 16
4.2.2 .BP continuous output............................................................................. 17
4.2.3 .UNIT selecting pressure unit.................................................................. 17
4.2.4 .FORM output with or without unit........................................................ 17
4.2.5 .RESET reset instrument..........................................................................18
4.2.6 .MPCON / MPCOFF set pressure correction on/o..............................18
4.2.7 .CALD setting calibration date................................................................18
4.2.8 .RON/ .ROFF setting RS-485 terminating resistor on/o...................18
4.3 Self-testing.......................................................................................................19
4.3.1 .? basic information of barometer settings...........................................19
5. Calibration and adjustment....................................................................... 21
5.1 Calibration and adjustment............................................................................21
5.2 Using Wizard software....................................................................................21
6. Technical Data................................................................................................25
6.1 PTB210 specifications.................................................................................... 25
Appendix A: FCC Part 15 compliance statement....................................29
Warranty.............................................................................................................31
Technical support............................................................................................. 31
Table of contents
1

Recycling............................................................................................................ 31
PTB210 Series User Guide M210669EN-E
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List of figures
Figure 1 PTB210 with standard accessories..................................................................7
Figure 2 BAROCAP pressure sensor................................................................................7
Figure 3 PTB210 mounting options.................................................................................9
Figure 4 PTB210 dimensions...........................................................................................28
List of figures
3

List of tables
Table 1 Document versions (English)............................................................................. 5
Table 2 PTB210 wiring with RS-232C ............................................................................12
Table 3 PTB210 wiring with RS-485/RS-232C interface...........................................12
Table 4 PTB210 with RS-232C/TTL interface...............................................................12
Table 5 PTB210 measurement performance ..............................................................25
Table 6 PTB210 operating environment ......................................................................26
Table 7 PTB210 inputs and outputs ..............................................................................26
Table 8 PTB210 mechanical specifications ................................................................. 27
Table 9 PTB210 compliance.............................................................................................28
PTB210 Series User Guide M210669EN-E
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1. About this document
1.1 Version information
This document provides instructions for using Digital Barometer PTB210.
Table 1 Document versions (English)
Document code Date Description
M210669EN-E June 2021 • Updated serial output information
• Updated specifications
M210669EN-D June 2009 Previous version
1.2 Documentation conventions
Warning alerts you to a serious hazard. If you do not read and
follow instructions carefully at this point, there is a risk of injury or even death.
WARNING!
Caution warns you of a potential hazard. If you do not read and
follow instructions carefully at this point, the product could be damaged or
important data could be lost.
CAUTION!
Note highlights important information on using the product.
Tip gives information for using the product more eciently.
Lists tools needed to perform the task.
Indicates that you need to take some notes during the task.
Chapter 1 – About this document
5

2. Product overview
2.1 PTB210 product overview
PTB210 is designed for various pressure ranges. It is available in 2 pressure ranges in 3
configurations:
• Serial output for 500 … 1100 hPa
• Serial output for 50 … 1100 hPa
• Analog output with dierent scalings between 500 … 1100 hPa
PTB210 is ideal for outdoor installations and harsh environments. PTB210 is designed to
operate in a wide temperature range, and the electronics housing provides IP65 (NEMA 4)
standardized protection against sprayed water.
The rugged corrosion-resistant housing in combination with the small size facilitates easy
installation and a long lifetime for the barometer.
PTB210 is ideal for use in applications such as weather stations, data buoys, ships, airports, and
agrology. It is also an excellent solution for monitoring barometric pressure in industrial
equipment such as laser interferometers and engine test benches.
In addition, PTB210 integrates directly with Vaisala Static Pressure Head Series SPH10/20. This
pairing oers accurate measurement in all wind conditions.
PTB210 is digitally adjusted and calibrated by using electronic working standards. A higher
accuracy barometer, which is fine-tuned and calibrated against a high-precision pressure
calibrator, is available for the 500 … 1100 hPa pressure range.
PTB210 Series User Guide M210669EN-E
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Figure 1 PTB210 with standard accessories
PTB210 uses the Vaisala BAROCAP sensor, a silicon capacitive absolute pressure sensor
developed by Vaisala for barometric pressure applications. The Vaisala BAROCAP sensor
provides excellent hysteresis and repeatability characteristics and outstanding temperature
and long-term stability. PTB210 is delivered with a traceable factory calibration certificate.
Figure 2 BAROCAP pressure sensor
Chapter 2 – Product overview
7

The BAROCAP® pressure sensor consists of 2 layers of single crystal silicon having a layer of
glass between them. The thinner silicon layer creates an integrated vacuum reference
chamber, and forms a pressure-sensitive silicon diaphragm. The thicker silicon layer is the rigid
base plate of the sensor, and it is clad with a glass dielectric. Thin film metallization has been
deposited to form a capacitor electrode inside the vacuum reference chamber. The other
electrode is the pressure-sensitive silicon diaphragm.
The coecients of thermal expansion of silicon and glass materials used in the BAROCAP®
pressure sensor are carefully matched together to minimize the temperature dependence, and
to maximize the long-term stability. The BAROCAP® pressure sensor is designed to achieve
zero temperature dependence at 1000 hPa, and its long-term stability has been maximized by
thermal ageing at an elevated temperature.
2.2 Safety
Only licensed experts may install electrical components. They
must adhere to local and state legislation and regulations.
WARNING!
2.3 Trademarks
Vaisalaâand BAROCAPâare registered trademarks of Vaisala Oyj.
Windowsâis either a registered trademark or trademark of Microsoft Corporation in the
United States and other countries.
All other product or company names that may be mentioned in this publication are trade
names, trademarks, or registered trademarks of their respective owners.
PTB210 Series User Guide M210669EN-E
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3. Installation
3.1 Mounting PTB210
Due to the compact design of PTB210, you only need to mount the instrument and connect the
wires. Choose one of the following 3 mounting options.
• Remove the pressure fitting and place the barometer on a desired structure. Attach it with
slot-headed screws the O-ring sealing the attachment (A).
• Fix the supplied attachment plate to a desired place and attach the barometer on the
plate with the supplied screws supplied (B).
• Attach PTB210 to a standard rail (DIN 35) with the attachment plate and clip (B). Fasten
the clip and barometer to the plate with the screws supplied. Attach the clip to the rail.
Figure 3 PTB210 mounting options
Always place the barometer so that the pressure fitting is downwards.
Chapter 3 – Installation
9

To prevent water from flowing along the cable and gathering near the feed-
through, make sure that the cable is upwards from the barometer.
PTB210 has IP65 housing. You can mount it outdoors without any additional protection. Make
sure that rainwater cannot block the open pressure fitting. Vaisala recommends connecting a
piece of a tube with inner diameter of 4 mm or more to the fitting.
You can also use a static pressure head, SPH10/20 to protect the pressure channel
from rain and minimize the eect of wind.
3.1.1 Static pressure head
The pressure fitting supplied with the transmitter is not a static pressure head. It is not suitable
for turbulent or high-speed static wind conditions. In demanding wind conditions, Vaisala
recommends using Vaisala static pressure head SPH10/20. PTB210 digital barometers can be
directly integrated to SPH10/20. PTB210 with SPH10/20 provide accurate measurement in all
wind conditions.
PTB210 Series User Guide M210669EN-E
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3.2 Connections
There are 3 dierent serial output interfaces available for PTB210 digital barometers:
• RS-232C
• RS-485/232C
• RS-232C/TTL
The connections depend on the output protocol in use.
Vaisala recommends isolating the free wire ends.
Chapter 3 – Installation
11

Table 2 PTB210 wiring with RS-232C
Wire color Signal
Grey RX
Green TX
Blue Ground
Pink Supply voltage (5 ... 28 V DC)
Brown Not connected
White Not connected
Yellow Power down mode (TTL level: 0 V = o, 5 V = on)
Table 3 PTB210 wiring with RS-485/RS-232C interface
Wire color Signal
Grey RX (with RS-232C)
Green TX (with RS-232C)
Blue Ground
Pink Supply voltage (8 ... 18 V DC)
Brown RS-485 -
White RS-485 +
Yellow Power down mode (TTL level: 0 V = o, 5 V = on)
The 2 output protocols cannot be used simultaneously. Connect either RX/TX or
RS-485 wires.
Table 4 PTB210 with RS-232C/TTL interface
Wire color Signal
Grey RX (with RS-232C)
Green TX (with RS-232C)
Blue Ground
Pink Supply voltage (5 ... 28 V DC)
Brown RXD (TTL level)
White TXD (TTL level)
Yellow Power down mode (TTL level: 0 V = o, 5 V = on)
PTB210 Series User Guide M210669EN-E
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The 2 output protocols cannot be used simultaneously. Connect either RX/TX or
RXD/TXD wires.
More information
‣.RON/ .ROFF setting RS-485 terminating resistor on/o (page 18)
Chapter 3 – Installation
13

4. Operation
PTB210 can be operated through a serial line by using suitable terminal software like
Windows® Hyper Terminal. The commands are described in the following pages.
The format of the commands is .ZZZ.xxx
zzz Defines an event
xxx Given parameter value
When there are several barometers on the same line, it is necessary to use an instrument-
specific identification code in front of the command, such as 123.BAUD.9600, where 123 is
the ID-code. See .ID setting identification code (page 15). The code directs the command to
that specific instrument. This prevents any inconsistency between the barometers and the host
system. A barometer reacts only to a command with its ID, or the one without the code.
You can type common setting commands without the ID code. The settings apply to all
barometers simultaneously.
The barometer does not echo the given commands nor confirm the new settings
by echoing them. You can check the settings with the command ?.
4.1 Settings
To activate the new setting, reset the barometer with the
command .reset<cr>.
4.1.1 .BAUD setting baud rate
.BAUD.xxxx
xxxx Baud rate (1200 ... 19200)
Example
.BAUD.9600 (commands invisible)
.RESET
PTB210 Series User Guide M210669EN-E
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4.1.2 Setting serial communication parameters
The following parameter combinations are available for PTB210. The factory setting for the
parameters is E71.
.E71
or
.O71
or
.N81
The command sets the serial communication parameters of either a single barometer or all the
barometers.
4.1.3 .ID setting identification code
.ID.xxx
xxx Identification code (max. 15 characters)
The default ID code is 0. When several barometers are on the same line, use the ID
code to direct the command to a specific instrument separately.
The barometer handles the ID code as characters, for example 0001, 01 and 1 are
dierent codes
4.1.4 .PMIN / .PMAX setting pressure limits
You can define a lower and a higher pressure limit to the barometer. You can define, for
example, the calibrated pressure range to a host system.
.PMIN.xxxx
xxxx Lower pressure limit (0 ... 15000 hPa)
If current pressure is under the limit, the barometer outputs ****.** instead of the pressure
reading.
.PMAX.xxxx
Chapter 4 – Operation
15

xxxx Higher pressure limit
4.1.5 .MPM measurements per minute
.MPM.xxx
xxx Number of measurements per minute (6 ... 4200)
The command sets the number of measurements performed in one minute. As default, the
MPM is 60.
60 min-1 = 1 s-1 = 1 measurement per second
4.1.6 .AVRG defining averaging
.AVRG.xxx
xxx Number of measurements of which the average
is calculated (0 ... 255). The default AVRG is 0.
The command sets the number of measurement points that are used for the calculating an
average pressure reading. This is not a moving average.
Example
If the number of measurements per minute is set to 30 and the averaging to 5, the pressure
reading is updated every 10 seconds.
4.2 Operating commands
To activate a new setting, reset the barometer with the command .reset.
4.2.1 .P outputting single message
.P
The command outputs the latest multi-point corrected pressure reading with 2 decimals.
.P<cr> (command invisible)
1012.99
PTB210 Series User Guide M210669EN-E
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4.2.2 .BP continuous output
.BP
The command outputs the multi-point corrected pressure reading continuously. The output
interval depends on the measurement rate and the averaging. To stop the output, press
ENTER.
.P<cr> (command invisible)
997.99
998.01
998.01
...
998.02
<cr> (command invisible)
4.2.3 .UNIT selecting pressure unit
.UNIT.x
x 0 (hPa)
1 (mbar)
2 (inHg)
3 (psia)
4 (torr) 10 (bar)
5 (mmHg)
6 (kPa)
7 (Pa)
8 (mm H2O)
9 (in H2O)
10 (bar)
The default value is 0.
4.2.4 .FORM output with or without unit
.FORM.0
The command cancels the unit output after pressure reading. This is also the factory setting for
the output format.
1017.61
Chapter 4 – Operation
17

1017.61
The command adds the unit to the output. The standard output field is for 6 characters. The
first character is always a space.
1017.61 hPa
4.2.5 .RESET reset instrument
.RESET
The command resets the barometer and activates the setting changes.
4.2.6 .MPCON / MPCOFF set pressure correction on/o
You can set multi-point corrections on or o with .MPCON and .MPCOFF. See Calibration and
adjustment (page 21).
.MPCON
The command activates the multi-point corrections.
.MPCOFF
The command deactivates the multi-point corrections.
4.2.7 .CALD setting calibration date
.CALD stores the last calibration date in the memory of the barometer.
.CALD.xxx
xxx Calibration date, max. 15 characters
Example
.CALD.991015
4.2.8 .RON/ .ROFF setting RS-485 terminating resistor on/o
PTB210 barometers have a built-in RS485 terminating resistor, which is o by default. You can
set the resistor on or o with the .RON/.ROFF commands. If the barometer is in the end of
the serial line, set the resistor on especially when long cables are used.
PTB210 Series User Guide M210669EN-E
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