Vaisala Mid-range Data Logger for Temperature, Humidity & Door Switch


  • Measurements are traceable to the International System of units (SI) through national metrology institutes.
  • Software options include vLog for Validation/Mapping and viewLinc continuous monitoring and alarming.
  • The Vaisala OPC-DA Server software can be used to integrate Vaisala DL-series data loggers to non-Vaisala systems

Dpstar is a leading supplier of environmental measurement sensors for temperature, relative humidity, pressure, dew point, CO2, and other environmental condition monitoring for industrial process application and research. Since the ’90s, we earned a reputation as a trusted partner to our clients through our commitment and dedication. We are an authorized distributor and supplier of measuring sensors solutions from renowned manufacturers Vaisala. Vaisala is a global leader in environmental and industrial measurement. Building on 80 years of experience, Vaisala provides observations for a better world. Vaisala is a reliable partner for customers around the world, offering a comprehensive range of innovative observation and measurement products and services.

Vaisala Mid-range Data Loggers are designed for early-stage drug and device development, focusing on speed and cost-effectiveness. Vaisala MR loggers can be use with Vaisala software to monitor and analyze environmental data. They create professional records that can be easily exported to PDF and spreadsheets.

Designed for Controlled Environments

  • Drug discovery, R&D
  • Early phase clinical trials
  • Blood and tissue banks
  • Hospitals and pharmacies
  • Nutraceutical manufacturing
  • Food and dietary supplement applications
  • Aerospace
  • Semiconductors
  • Museums and archives

Simplified Calibration

Easy to install and configure, Vaisala MR loggers are calibrated with an the abbreviated process that provides reliable accuracy in operating environments between -55 to +50 °C (-67 to 122 °F). Vaisala MR loggers include calibrations traceable to SI units through national metrology institutes to ensure cGMP, ISO 9000, and HACCP quality standards.6) Optional services are available, including extended warranties and onsite calibration.

Easy Configuration

Connectivity options include USB, wireless, and Power over Ethernet with the vNet PoE network interface. When Vaisala MR loggers are used with the vNet PoE the device, installation takes minutes. With the vNet device, loggers are automatically identified on your network by the software.

Lean Validation

For applications that require validation, we offer efficient and practical protocols that allow for quick verification of data logger functions.

Software Options

Whether you need multistage alarming sent via text, email, PC display, or dial-out, or to perform a comprehensive mapping study, Vaisala has user-friendly software designed for use in regulated environments, including:

  • viewLinc Continuous Monitoring and Alarming
  • vLogSP for Validation/Mapping applications

Data Logger Options

Six versions of Vaisala MR Loggers are available with up to four channels of temperature-only, temperature + humidity, or Boolean contact channel for door switches/alarm contact recording:

  • DL1000MR – 1 internal temperature channel
  • DL1016MR – 2 channel temperature with probes
  • DL1016MRB – 2 channel with 1 temperature probe, and 1 contact input
  • DL1416MR – 4 channel temperature with probes
  • DL1416MRB – 2 channel temperature with probes, and 2 contact inputs
  • DL2000MR – 2 internal channels temperature and RH


Interfaces RS-232 serial, Ethernet, USB, Wi-Fi, vNet PoE network interface
Software • vLog Validation/Mapping
• viewLinc Continuous Monitoring & Alarming
• OPC Server to add Vaisala loggers to any OPC compatible monitoring system
Internal clock accuracy ±1 min/month
0 to +50 °C (+32 to +122 °F)
Power source Internal 10-year lithium battery 1)
EMC compliance FCC Part 15 and CE
EN 50581:2012
EN 55032:2012/AC:2013 Class B
EN 61326-1:2013
RoHS compliance 2011/65/EU
1) Typical battery life specified with sample interval of 1 min or longer.
Memory type Non-volatile EEPROM
Memory mode User-selectable wrap (FIFO) or stop when memory is full
Sampling rates User-selectable rates from once every 10 seconds to once per day (Typical battery life specified with sample interval of 1 min or longer)
Data Sample Capacity
DL1000MR 48 100 12-bit samples
DL1016MR/MRB 68 600 16-bit samples
DL1416MR/MRB 101 375 16-bit samples
DL2000MR 122 197 12-bit samples
Mechanical Specifications
Dimensions 85 × 59 × 26 mm (3.4 × 2.3 × 1 in)
Weight 76 g (2.7 oz)
Mounting 3M Dual Lock™ Fasteners
Snap-in connector for secure probe connections
Temperature Sensors
Internal sensor type Precision-tolerance epoxy encapsulated NTC thermistor
Cable construction 2 mm (0.07 in) Diameter, Teflon coated cable
External Temperature Probes
Sensor tip Stainless steel
Diameter 3.2 mm (1/8 in)
Length 38 mm (1.5 in)
Probe Cable Lengths
DL1016MR/MRB 3 m (10 ft)
DL1416MR/MRB 7.6 m (25 ft)
DL1000MR Internal Temperature Sensor
Range and Accuracy
Logger operating range -35 … +85 °C (-31 … +185 °F)
Calibrated measurement range -25 … +70 °C (-13 … +158 °F)
Resolution 0.02 at +25 °C (0.04 at +77 °F)
Accuracy over temperature range 1) at -25 … +70 °C (-13 … +122 °F) ±0.5 °C (±0.9 °F)
1) Initial accuracy includes all known influence quantities present at the time of calibration including calibration uncertainty, mathematical fit, data logger resolution, hysteresis, and reproducibility. Not included is any drift related to atypical contamination or misuse.
DL2000MR Internal Temperature/RH Sensor
Temprature Range and Accuracy
Operating Range -35 … +85 °C (-31 … +185 °F)
Calibrated Measurement Range -25 … +70 °C (-13 … +158 °F)
Accuracy over temperature range 1) at -25 … +70 °C (-13 … +122 °F) ±0.5 °C (±0.9 °F)
Resolution 0.02 °C at +25 °C (0.04 °F at +77 °F)
Relative Humidity Range and Accuracy
Calibrated measurement points • 45 %RH at +10 °C (+50 °F)
• 10 %RH and 80 %RH at +25 °C (+77 °F)
• 45 %RH at +25 °C (+77 °F)
• 45 %RH at +45 °C (+113 °F)
Operating Range 0 … 100 %RH (non-condensing)
Temperature range +20 … +30 °C (68 … 86 °F) 10 … 90 %RH ±2.0 %RH
Temperature range -20 … +20 °C,
+30 … +70 °C (-4 … 68 °F, 86 … 158 °F)
10 … 90 %RH ±3.0 %RH
Resolution 0.05 %RH
Humidity sensor Vaisala HUMICAP 180R
Stability ±2 %RH over 2 years
1) Initial accuracy includes all known influence quantities present at the time of calibration including calibration uncertainty, mathematical fit, data logger resolution, hysteresis and reproducibility. Not included is any drift related to atypical contamination or misuse.
DL1016/1416MR External Temperature Sensors
Range and Accuracy
Logger operating range 0 … +50 °C (32 … +122 °F)
Probe operating range -95 … +70 °C (-139 … +158 °F)
Calibrated measurement range -55 … +50 °C (-130 … +122 °F)
Resolution 0.01 °C at +25 °C (0.02 °F at +77 °F)
Accuracy over temperature range 1) at -55 … +50 °C (-67 … +122 °F) ±0.5 °C (±0.9 °F)
1) Specification for external channels is for a probe calibrated to the specified channel of the data logger, with the logger at 0 °C to +50 °C (32 °F to +122 °F).
Temperature Probe
EPT-TDB: Thermal Dampening Block, for use in refrigerators and freezers. The block simulates a glycol bottle to reduce alarms generated by opening and closing doors.
Boolean Contact Cables
EPT-DS-25 Available cable with magnetic contact switch – 7.6 m (25′) for use with MRB loggers.
Validation Documents
VL-VPE-VLNC-43 Express Validation IQ is eight tests, OQ is eleven tests. Testing includes security testing for users.


Vaisala Mid-Range Data Logger For Temperature, Humidity & Door Switch_DpstarGroup