Vaisala DL1700 Thermocouple Data Loggers


  • Accepts type J, K, T, E, R and S thermocouples
  • No programming or complicated equations required
  • Highly accurate replacement for data acquisition systems
  • Traceable to SI units through national metrology institutes

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 DL1700 Thermocouple Data Loggers are highly accurate for temperature monitoring and perfect for tough environments. Vaisala DL1700 data loggers can be used with Vaisala software, either viewLinc or vLog, allowing you to download, display, and analyze environmental data. With viewLinc, get continuous alarm alerts, real-time remote monitoring, and complete data coverage. vLog is a simple tool for validation and mapping tasks. Reports are customizable and exportable to meet regulatory requirements. These user-friendly data loggers support standard thermocouples, offering up to five channels and a wide temperature range from -240 °C to +1760 °C.

Vaisala DL1700 series caters to various needs, including validated and non-validated applications. Opt for Vaisala DL1700 VL series for GxP-compliant environments, or Vaisala DL1700 SP series for other applications. DL1700 series data loggers include calibrations traceable to SI units through national metrology institutes.

5) Measurement results are traceable to the international system of units (SI) through national metrology institutes (NIST USA, MIKES Finland, or equivalent) or ISO/IEC 17025 accredited calibration laboratories.

Key Benefits

  • Ideal for extreme temperatures
    For use in multiple applications in temperatures ranging from -240 °C to 1760 °C.
  • Easy to use
    No programming or complicated equations are required. The viewLinc software allows you to put in the type of thermocouple you are using and calculates accordingly.
  • Used with multiple thermocouple types
    Compatible with type J, K, T, E, R, and S thermocouples depending on the application temperature range.


  • Ideal for extreme temperatures from -240 °C to +1760 °C.
  • Accepts type J, K, T, E, R, and S thermocouples.
  • No programming or complicated equations are required.
  • Highly accurate replacement for bulky data acquisition systems.
  • Traceable to SI units through national metrology institutes.


Interfaces RS-232 serial, USB, Ethernet, WiFi network interface available
Internal clock Accuracy: ±1 min./month at -25 … +70 °C
Software viewLinc for Monitoring,
Alarming and Reporting vLogVL for Validation/
Mapping GxP environments
vLogSP for graphing and reporting non-GxP
OPC Server to add Vaisala loggers to any OPCcompatible
monitoring system
Temperature Accuracy
Temperature Measurement Range Accuracy at Midrange Resolution at Mid-range
Type K -220 … +1370 °C B326(-364 … +2498 °F) ±1.3 °C (±2.3 °F) 0.37 °C (0.67 °F)
Type J -130 … +900 °C (-202 … +1652 °F) ±1.0 °C (±1.8 °F) 0.29 °C (0.52 °F)
Type T -240 … +350 °C (-400 … +662 °F) ±1.2 °C (±2.2 °F) 0.34 °C (0.61 °F)
Type E -110 … +740 °C (-166 … +1364 °F) ±0.70 °C (±1.3 °F) 0.20 °C (0.36 °F)
Type R -50 … +1760 °C (-58 … +3200 °F) ±4.4 °C (±7.9 °F) 1.3 °C (2.3 °F)
Type S -50 … +1700 °C (-58 … +3092 °F) ±5.1 °C (±9.2 °F) 1.5 °C (2.7 °F)
Operating Environment
Operating temperature -40 … +85 °C (-40 … +185 °F)
Operating humidity 0 … 100 %RH (non-condensing)
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
Mechanical Specifications
Dimensions 85 × 59 × 26 mm (3.4 × 2.1 × 1 in)
Weight 60 g (2.7 oz)
Mounting 3M Dual Lock™ fasteners
Power source Internal 10-year lithium battery
(Battery life specified with sample
interval of 1 min. or longer)
Cold Junction Temperature Channel
Measurement range -40 … +85 °C (-40 … +185 °F)
Accuracy ±0.25 °C over +20 … +30 °C
(±0.45 °F over +68 … +86 °F)
±0.35 °C over -25 … +70 °C
(±0.63 °F over -13 … +158 °F)
Data Logger Inputs
1700 Model Number of Channels Enabled
Thermocouple CJT Total
170-54T 4 1 5
Note: One channel is designated for Cold Junction Temperature (CJT) reference using an on-board precision-tolerance thermistor.
Thermocouple Input Channels
Compatible Thermocouple Types: J, K, T, E, R, S
Initial Accuracy
Input range -7.2 … +55.4 mV
Resolution 0.016 mV
Initial Accuracy ±0.042 mV at +25 °C (+77 °F)
Input Impedance: 10M Ω
Input range -7.2 … +55.4 mV
Resolution 0.016 mV
1-Year Accuracy ±0.055 mV at +25 °C (+77 °F)
Additional Error
At 3 V/m RF field from 450 MHz … 580 MHz ±0.350 mV
At 3 V conducted RF from 3 MHz … 80 MHz ±1.0 mV
Memory type Non-volatile EEPROM
Data sample capacity 135,165 12-bit samples
Memory modes User-selectable wrap (FIFO) or stop when memory is full. User-selectable start time.
Sampling rates User-selectable from once every 10 seconds to once a day. (Battery life specified with sample interval of 1 min. or longer)
Recording span Recording span depends upon sample interval selected and number of channels enabled.
Spare Parts and Accessories
Thermocouple probe EPT-22T-20T
Type T
Conductors Copper/Constantan
Operating range -200 … +200 °C (-328 … +392 °F)
Length 6.096 m (20 ft)
Error ±1 °C … ±1.5 %


Vaisala DL1700 Thermocouple Data Loggers_DpstarGroup