QML201C VAISALA | Alldatasheet

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Technical content

Features

  • 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 Vaisala Data Logger QML201C is built using proven sensor technology by Vaisala. 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, ensure the accuracy of data measurement. Easy to use Sensor measurements, statistical calculations, data logging, and data transmissions are performed according to configuration done with the Vaisala Lizard Setup Software. The software has many setup options and advanced features. Easy to upgrade The system architecture enables QML201C to be easily upgraded with new sensors, calculations, output formats, and logging schedules at any time to accommodate the changing requirements of the users. The basic system provides RS‑ 232, RS‑ 485, and SDI‑ 12 ports for interfacing with almost any type of telemetry, terminal, display, and smart sensor. With optional plug-in modules, the number of serial ports can be extended from 2 to up to 8 ports, enabling multiple RS‑ 232, RS‑ 485, SDI‑ 12, and Ethernet connections. Easy to expand QML201C can also be expanded with another QML201C unit that offers 10 additional differential analog channels and serial lines. A digital I/O unit adds 8 digital outputs and 8 digital inputs for sensors, power optimizing, and unmanned control functions based on user-defined requirements. 202 [7.96] 192 [7.56] 59 [2.32]95 [3.75] mm [in] QML data logger dimensions

Operating temperature −50 … +60 °C (−58 … +140 °F) Extended operating temperature −60 … +70 °C (−76 … +158 °F) Storage temperature −60 … +70 °C (−76 … +158 °F) Operating humidity 0 … 100 %RH Inputs and outputs Processor 33 MHz, 32‑ bit Motorola A/D conversion 24‑ bit Memory 2 MB RAM and 4 MB program Data logging memory 3.3 MB internal Flash memory External memory card capacity 2 GB on CompactFlash card Sensor inputs 10 analog inputs (20 single-ended inputs) 2 counter/frequency inputs External powering 8 … 30 V DC Power consumption < 10 mA / 12 V (typically with basic 5 sensors) Communication specifications Serial Standard RS‑ 232 2‑ wire RS‑ 485 SDI‑ 12 Optional 2 optional plug‑ in slots for communication modules to increase the number of the serial I/O channels up to 8 pcs Fast serial expansion bus for connecting digital I/O module, for example Speed 300 … 38 400 bps Configurable parameters Speed, start bits, data bits, stop bits, parity, XON/XOFF, and checksum Ethernet Standard IEEE 802.3 2 plug‑ in slots for Ethernet modules DSE101 Speed 10 Mbps (10BASE‑ T) Can also be connected to 100/1000 Mbps (100/1000BASE‑ T) networks with 10 Mbps Parameters Full/Half duplex with auto- negotiation TCP/IP Supported protocols ARP, UDP/IP, TCP/IP, FTP, SMTP, PPP (with PAP or CHAP authentication), HTTP (GET), Telnet, ICMP Echo, DHCP, NTP, DNS, serial port tunneling over TCP/IP Accuracy specifications All data for ambient temperature range −50 … +60 °C (−58 … +140 °F) unless otherwise specified. Temperature measurement (Pt100 sensor) Measurement range −60 … +70 °C (−76 … +158 °F) Uncertainty over −60 … +70 °C (−76 … +158 °F) < ±0.02 °C, typically Maximum error over −50 … +60 °C (−58 … +140 °F) < ±0.04 °C Maximum error over −60 … +70 °C (−76 … +158 °F) < ±0.08 °C Maximum error at 0 °C (+32 °F) 1) < ±0.02 °C Voltage measurement Uncertainty over temperature range −5 … +30 °C (14 … +86 °F): ±5 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 Uncertainty over temperature range −40 … +60 °C (−40… +140 °F): ±5 V range < 0.06 % of reading ±100 μV ±2.5 V range < 0.04 % of reading ±50 μV ±250 mV range < 0.15 % of reading ±15 μV ±25 mV range < 0.15 % of reading ±10 μV Uncertainty over temperature range −50 … +60 °C (−58 … +140 °F): ±5 V range < 0.08 % of reading ±100 μV ±2.5 V range < 0.08 % of reading ±50 μV ±250 mV range < 0.15 % of reading ±15 μV ±25 mV range < 0.15 % of reading ±10 μV Uncertainty over temperature range −60 … +70 °C (−76 … +158 °F): ±5 V range < 0.12 % of reading ±150 μV ±2.5 V range < 0.12 % of reading ±80 μV ±250 mV range < 0.20 % of reading ±20 μV ±25 mV range < 0.20 % of reading ±10 μV Common mode range +7 V / −3 V Frequency measurement Uncertainty over temperature range −60 … +70 °C (−76 … +158 °F): 20 Hz … 8000 Hz < 0.04 % of reading 8000 Hz … 20000 Hz < 0.40 % of reading Real-time clock (standard) Accuracy Better than 20 s/month Backup time 5 years minimum with CR1220 battery 1) Verified with QML data logger at 0 °C (+32 °F). Compliance EU directives EMC Directive (2014/30/EU) RoHS Directive (2011/65/EU) amended by 2015/863 EMC immunity EN 61326‑ 1, industrial environment EMC emissions CISPR 32 / EN 55032, Class B Compliance marks CE, RCM Published by Vaisala | B210718EN-H © Vaisala 2021 All rights reserved. Any logos and/or product names are trademarks of Vaisala or its individual partners. Any reproduction, transfer, distribution or storage of information contained in this document is strictly prohibited. All specifications — technical included — are subject to change without notice. www.vaisala.com