User manual VAISALA GMW115 QUICK REFERENCE GUIDE

[. . . ] 10 V Signal (-) RS-485 Signal B RS-485 Signal A Power supply (-) Power supply (+) 24 VDC/VAC 0601-002 Figure 2 Connection of Single AC supply to Several Transmitters MOUNTING AND DIMENSIONS Dimensions mA V 0 B A 0 24V mA V 0 B A 0 24V QUICK REFERENCE GUIDE See Figure 3 for wire terminals. Powering 25 Vaisala CARBOCAP® Carbon Dioxide Module GMM112 and Transmitter GMW115 The products require a nominal 24 VDC/VAC power supply maintaining a voltage of 18 . . . [. . . ] Make sure the back plate is mounted in with the same orientation as in Figure 4. GMW115 Cover Opening/Closing SERIAL COMMANDS Serial commands are the same for RS232 and RS485 interface. Polling command for CO2 measurement (ppm): SEND <cr> Setting the interval for the RUN (continuous output) mode: INTV X Y<cr> X = 0 (default) . . . 255 Y = S/MIN/H Starting the continuous mode printing: R<cr> Stopping the continuous mode printing: S<cr> Saving the parameters into the memory: SAVE<cr> Enabling/disabling the RS485 interface: RS485 X<cr> X = ON/OFF Changing the operation mode: SMODE X<cr> X = STOP (default) / RUN / POLL Giving the device address: ADDR X<cr> X = 0 (default) . . . 99 Opening the polling line: OPEN addr<cr> addr = 0 (default) . . . 99 Closing the polling line: CLOSE<cr> 0601-007 TECHNICAL DATA Property Performance Measurement ranges Measurement accuracy (incl. repeatability, nonlinearity and calibration uncertainty) Long-term stability Response time Temperature dependence of reading Pressure dependence of reading Warm-up time Product lifetime Operating environment Operating temperature range Operating humidity range Operating pressure range Inputs and outputs Operating voltage Power consumption Connections Outputs analog serial Recommended external load current output voltage output Electromagnetic compatibility Materials Weight Housing material Description / Value 0 . . . 5000 ppm CO2 ±(2 % of range + 2 % of reading) 0601-006 ± 5 % of range / 5 years 1 min -0. 35 % of reading / °C (typical) + 0. 15 % of reading / hPa (typical) 1 min 10 min full specification > 10 years -5 . . . 1200 hPa 24 V (±20 %) AC/DC <2W Screw terminals, wire size 2 0. 5 . . . 20 mA RS-485, 2-wire, non-isolated Figure 5 Opening the GMW115 Cover SERVICE, CALIBRATION AND ADJUSTMENT These products are designed to operate their lifetime without maintenance The transmitters are calibrated before shipping from the factory. For technical questions, contact the Vaisala technical support; by e-mail helpdesk@vaisala. com, or by fax +358 9 8949 2790. Repair and calibration services are provided by Vaisala Service Centers: Figure 6 Closing the GMW115 Cover SERIAL COMMUNICATION INTERFACES The modules support RS232 or RS485 communication. [. . . ] Visit our Internet pages at GUARANTEE Vaisala issues a guarantee for the material and workmanship of this product under normal operating conditions for two (2) years from the date of delivery. Exceptional operating conditions, damage due to careless handling and misapplication will void the guarantee. [. . . ]