PTB110 User's Guide
Contents
1. C 1 0 hPa 40 60 C 1 5 hPa Long term stability 0 1 hPa year Supply voltage 10 30 VDC Supply voltage control With TTL level trigger Negligible Supply voltage sensitivity Current consumption Output voltage 500 1100 Hz 0 1 hPa Output frequency Resolution Load resistance Load capacitance Settling time 10 kohm minimum 1 s to reach full accuracy after power up 500 ms to reach full accuracy after a pressure step Response time Acceleration sensitivity Negligible Pressure connector M5 10 32 internal thread Pressure fitting Barbed fitting for 1 8 Minimum pressure limit 0 hPa abs Maximum pressure limit 2000 hPa abs Electrical connector A removable connector for five wires AWG 28 16 Pin 1 External triggering Pin 3 Supply ground Housing material plastic ABS PC blend cover Metal mounting plate Weight Terminals Housing classification IP 32 SAFETY PRECAUTIONS The PTB110 delivered to you has been tested for safety and approved as shipped from the factory Note the following precautions WARNING Ground the product and verify outdoor installation grounding periodically to minimize shock hazard CAUTION Do not modify the device Improper modification can damage the product or lead to malfunction ESD Protection Electronic Discharge ESD can cause immediate or latent damage to electronic circuits Vaisala products are adequately protected again2. y DIN MOUNTING FOOT CUSTOMER PORT PIN 1 EXT TRIGGER IN SHUTDOWN MODE PRESSURE PORT OPERATING MODES The PTB110 barometer has two operating modes the normal and the shutdown mode The factory setting is the normal mode 1 Normal Mode The device is in the normal mode when the power on jumper is connected see figure on the following page m In the normal mode the barometer measures continuously when powered up Shutdown Mode The device is in the shutdown mode when the power on jumper is not connected In the shutdown mode the barometer can be turned on or off by switching the pin 1 The pin 1 is located at the customer port on the left edge of the screw terminal The other jumpers inside the barometer are set at the factory and they must not be touched ELECTRICAL CONNECTIONS The PTB110 barometer contains a screw terminal block located at the customer port The screw terminal includes the electrical input output pins presented in the table below Description Value Pin 1 EXT_TRIG External trigger input Pin 1 is used as a power on off switch in shutdown mode as follows Power off 0 VDC Power on 5 VDC Pin 2 AGND Analog ground Pin 3 GND Pin 4 SUPPLY Supply voltage Pin 5 VOUT FOUT Voltage output Frequency output In the normal mode no connection to the Pin 1 EXT TRIG is recommended The barometer is protected against a reverse operating voltage Both gr
3. ceed the invoice price of any Product for which a warranty claim is made nor shall Vaisala in any circumstances be liable for lost profits or other consequential loss whether direct or indirect or for special damages
4. cts VAISALA USER S GUIDE Vaisala BAROCAP Barometer PTB110 Series Several pressure ranges Accuracy 0 3 hPa at 20 C Long term stability 0 1 hPa year On off control with external trigger Output voltage 0 2 5 or 0 5 VDC frequency output Current consumption less than 4 mA Mountable on a 35 mm wide DIN rail NIST traceable certificate included BAROCAP sensor www vaisala com M210839EN A PRODUCT DESCRIPTION The PTB110 barometer is a micro controller based barometer including a voltage or frequency output The barometer can be supplied with several pressure ranges The output of the barometer is a calibrated barometric pressure reading The barometer uses the Vaisala BAROCAP Sensor a silicon capacitive sensor developed by Vaisala for barometric pressure measurement applications The BAROCAP sensor is especially designed for accurate and stable measurement of barometric pressure INSTALLATION The PTB110 barometer is intended to be installed indoors Installing outdoors requires a protecting enclosure A DIN rail mounting option enables the mounting of the barometer on a 35 mm wide standard DIN mounting rail The barometer should be installed in a vertical position with the connectors pointing downwards to prevent accumulation of condensated water UP POWER ON JUMPER AND OFFSET ADJUSTMENT BUTTONS UNDER THE PLASTIC COVER 4
5. en the cover and the metal mounting plate As you press the tool slightly the cover will open up Inserting the Cover Place the short and solid side of the cover against the left edge of the metal plate Ensure that the metal clamps slide into the hollows in the cover Then press the cover against the metal plate until it clicks in place INNER STRUCTURE OF THE BAROMETER BUTTONS GREEN RED LED POWER ON OTHER JUMPER JUMPERS SET AT FACTORY HAE Tt a CUSTOMER PORT pi ADJUSTMENT AND CALIBRATION Calibration of the PTB110 series barometers is NIST traceable and the barometers are supplied with a NIST traceable calibration certificate There are two push buttons available for the offset fine adjustment inside the barometer see the figure on the previous page The adjustment step is 0 05 hPa OPERATING THE BUTTONS Restoring Adjustments To restore the adjustments press and hold down the left button while switching on the barometer After releasing the button a green LED starts flashing When the factory adjustments are in use the green LED flashes twice When the user adjustments are in use the green LED flashes three times Now you can change the factory adjustments to user adjustments or vice versa by pressing the left button Return to the normal operating mode by switching the power off and on in sequence Using Analog Output Test Mode To activate the test mode press and hold down the right bu
6. hrough a normal wear and tear or accident b misuse or other unsuitable or unauthorized use of the Product or negligence or error in storing maintaining or in handling the Product or any equipment thereof c wrong installation or assembly or failure to service the Product or otherwise follow Vaisala s service instructions including any repairs or installation or assembly or service made by unauthorized personnel not approved by Vaisala or replacements with parts not manufactured or supplied by Vaisala d modifications or changes of the Product as well as any adding to it without Vaisala s prior authorization e other factors depending on the Customer or a third party Notwithstanding the aforesaid Vaisala s liability under this clause shall not apply to any defects arising out of materials designs or instructions provided by the Customer This warranty is expressly in lieu of and excludes all other conditions warranties and liabilities express or implied whether under law statute or otherwise including without limitation any implied warranties of merchantability or fitness for a particular purpose and all other obligations and liabilities of Vaisala or its representatives with respect to any defect or deficiency applicable to or resulting directly or indirectly from the Products supplied hereunder which obligations and liabilities are hereby expressly cancelled and waived Vaisala s liability shall under no circumstances ex
7. ounds AGND and GND are in the same electrical potential in the barometer Both three wire and four wire connections can be used However it is recommended to use the four wire connection especially if the signal wires are long The connections can be made as illustrated below FOUR WIRE CONNECTION THREE WIRE CONNECTION READING THE OUTPUT The barometric pressure P can be calculated from the measured output voltage Uout using a simple equation P P U low out range where Py Lower limit of the pressure range hPa L rines Pressure full range hPa U ange Voltage full range V U2 Measured output voltage V Example Pressure range 500 1100 hPa Voltage output 0 5 V Measured output voltage 4 V 1100 500 4Pa P 500hPa 4V 980hPa NOTE The low end of the output voltage range of the barometer saturates at about 50 mV In the frequency output 1 hPa equals 1 Hz www vaisala com M210839EN A INSERTING AND REMOVING THE COVER The adjust buttons and the power on jumper are located inside the barometer In order to adjust the measurement the plastic cover of the barometer must be removed For safety reasons turn off the power when opening the cover You can power off the device by pulling out the connector from the customer port Correspondingly you can power on the device by plugging the connector back into the customer port Removing the Cover Stick a flat end screwdriver betwe
8. rge and otherwise on the same conditions as for the original Product or part without extension to original warranty time Defective parts replaced in accordance with this clause shall be placed at the disposal of Vaisala Vaisala also warrants the quality of all repair and service works performed by its employees to products sold by it In case the repair or service works should appear inadequate or faulty and should this cause malfunction or nonfunction of the product to which the service was performed Vaisala shall at its free option either repair or have repaired or replace the product in question The working hours used by employees of Vaisala for such repair or replacement shall be free of charge to the client This service warranty shall be valid for a period of six 6 months from the date the service measures were completed This warranty is however subject to following conditions a A substantiated written claim as to any alleged defects shall have been received by Vaisala within thirty 30 days after the defect or fault became known or occurred and 4 b The allegedly defective Product or part shall should Vaisala so require be sent to the works of Vaisala or to such other place as Vaisala may indicate in writing freight and insurance prepaid and properly packed and labelled unless Vaisala agrees to inspect and repair the Product or replace it on site This warranty does not however apply when the defect has been caused t
9. st ESD for their intended use However it is possible to damage the product by delivering electrostatic discharges when touching removing or inserting any objects inside the equipment housing To make sure you are not delivering high static voltages yourself e Handle ESD sensitive components on a properly grounded and protected ESD workbench When this is not possible ground yourself to the equipment chassis before touching the boards Ground yourself with a wrist strap and a resistive connection cord When neither of the above is possible touch a conductive part of the equipment chassis with your other hand before touching the boards e Always hold the boards by the edges and avoid touching the component contacts www vaisala com M210839EN A RECYCLING Recycle all applicable material Dispose of batteries and the unit according to statutory regulations Do not dispose of with regular household refuse WARRANTY Vaisala hereby represents and warrants all Products manufactured by Vaisala and sold hereunder to be free from defects in workmanship or material during a period of twelve 12 months from the date of delivery save for products for which a special warranty is given If any Product proves however to be defective in workmanship or material within the period herein provided Vaisala undertakes to the exclusion of any other remedy to repair or at its own option replace the defective Product or part thereof free of cha
10. tton while switching on the barometer The function forces the voltage or frequency output to 50 of the scale As an indication of the test mode the red LED is lit Return to the normal operating mode by switching the power off and on in sequence Offset Correction To activate the offset correction mode press and hold down both buttons switching on the barometer The green and red LEDs are lit Now you can adjust the offset correction upwards or downwards Each time when pressing the left button the offset goes down by one step 5 Pa and the green LED flashes once Each time when pressing the right button the offset goes up by one step 5 Pa and the red LED flashes once Return to the normal operating mode by switching the power off and on in sequence Dimensions www vaisala com Lean PTB110 IE VAISALA M210839EN A TECHNICAL DATA Operating range 1 hPa 1 mbar Pressure ranges Description Value Linearity Notes Description Value Defined as 2 standard deviation limits of end point non linearity hysteresis error or repeatability error ii Defined as 2 standard deviation limits of inaccuracy of the working standard including traceability to NIST Defined as the root sum of the squares RSS of end point non linearity hysteresis error repeatability error and calibration uncertainty at room temperature Total accuracy 15 25 C 0 3 hPa 0 40 C 0 6 hPa 20 45
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