User manual VAISALA QML201C DATASHEET

[. . . ] www. vaisala. com Vaisala Data Logger QML201C The Vaisala Data Logger QML201C Features/Benefits The QML201C The Vaisala Data Logger QML201C incorporates Vaisala's proven sensor technology. A 32-bit central processing unit (CPU), 24-bit A/D conversion (ADC), autocalibration of the ADC and measurement electronics coupled with advanced data quality control and validation software all ensure the accuracy of data measurement. Easy to install, economical to maintain and upgrade Field-proven reliability and accuracy in harsh environments Low power consumption Extensive calculation and data logging capability Good expandability and high level of customization through open and modular design Built-in TCP/IP connectivity Compact design new sensors, calculations, output formats, and logging schedules at any time to accommodate users' changing requirements. [. . . ] 38400 bps Configurable speed, start bits, data bits, stop bits, parity, XON/XOFF , and checksum 8 . . . 100 %RH TCP/iP Supported protocols ARP UDP/IPTCP/IP FTP SMTP PPP , , , , , (with PAP or CHAP authentication), HTTP(get), Telnet, ICMP Echo, DHCPARP , , NTP DNS, serial port tunneling over TCP/IP , Sensor inputs Accuracy All data for ambient temperature range -50 . . . +60 °C unless otherwise specified Temperature measurement (PT100 sensor, measurement range -50 . . . +80 °C) Typical uncertainty over temperature range: -50 . . . +60 °C < ±0. 04 °C temperature range :-60 . . . +70 °C < ±0. 08 °C Max. +50 °C < ±0. 10 °C Max. error at 0 °C < ±0. 04 °C Voltage measurement uncertainty, temperature range -50 . . . +60 °C ±5. 0 V range < 0. 06 % of reading ±100 µV ±2. 5 V range < 0. 04 % of reading ±50 µV ±250 mV range < 0. 06 % of reading ±6 µV ±25 mV range < 0. 06 % of reading ±5 µV Voltage measurement uncertainty, temperature range -60 . . . +70 °C ±5. 0 V range < 0. 10 % of reading ±150 V ±2. 5 V range < 0. 08 % of reading ±80 V ±250 mV range < 0. 10 % of reading ±10 V ±25 mV range < 0. 10 % of reading ±10 V Frequency measurements ±0. 003 % + resolution up to 20 kHz Common mode range +7 V/-3 V Real-time clock (standard) accuracy Better than 20 s/month back-up time minimum 5 yrs. [. . . ] The reproduction, transfer, distribution or storage of information contained in this brochure in any form without the prior written consent of Vaisala is strictly prohibited. All specifications -- technical included -- are subject to change without notice. [. . . ]