Fluke 961A/961B/961C Temperature Humidity Logger with USB Connection

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Product overview: Fluke 961A/961B/961C Temperature Humidity Logger with USB Connection

Record and read data at any time, easy to use​

No additional data cable is required, by simply using the USB interface of the Fluke 961, you can easily read temperature and humidity report in PDF generated automatically, and you can also quickly export the temperature and humidity data in the Logger in the form of tables, charts, and text. Up to 32,000 sets of data for long-term logging without exporting frequently. The Fluke 961 Series Temperature Humidity Logger with USB Connection is a convenient tool for monitoring temperature and humidity in food, pharmaceutical, cold-chain and cold storage industries.

Recommended usage scenario: Long term logging, viewing data on demand

  • Cold-chain transportation
  • Cold storage validation
  • Fresh food
  • Temporary transhipment
  • Refrigerators and freezers
  • Ultra-low temperature storage

Specifications: Fluke 961A/961B/961C Temperature Humidity Logger with USB Connection

 961A961B961C
Detailed Specifications
Sensor TypeInternalExternalExternal
Temperature Measurement
Temperature Measurement Range-30.0 °C to 70.0 °C-85.0 °C to 150.0 °C-40.0 °C to 85.0 °C
Accuracy± 0.4 °C±(0.3 + 0.005 x |readings|) °C± 0.4 °C
Resolution0.1 °C
Humidity Measurement
Range0% to 100.0% RHNA0% to 100.0% RH
Accuracy±3% RH (20 to 80% RH @ 25 °C);
±5% RH (<20% RH, >80% RH @ 25 °C)		NA±3% RH (20 to 80% RH @ 25 °C);
±5% RH (<20% RH, >80% RH @ 25 °C)
Resolution0.1% RHNA0.1% RH
Date Storage32 000
Logging Interval10 s to 24 hr
Start ModePress button or use software
Stop ModePress button, use software or stop-when-full
Alarm ThresholdUp to 3 upper temperature limits and 2 lower temperature limits
1 upper humidity limit and 1 lower humidity limit
Alarm TypeSingle / Cumulative
Report FormatPDF (direct read via a PC), Excel and TXT (via PC software)
General Specifications
TemperatureOperating-30 °C to 70 °C (the Logger)
Storage-30 °C to 70 °C (the Logger)
AltitudeOperating2 000 m
Storage12 000 m
Relative HumidityOperating0% RH to 100% RH, non-condensing
Storage<75% RH
Power SupplyBattery typeCR2450 x 1
Battery Life1 year (logging @ 15 min interval, 25 °C)
SafetyIEC 610101-1, Pollution Degree 2
Dimensions (L x W x H)107 mm x 47 mm x 17 mm (No external probe)
Weight60 g (with battery)88 g (with battery)78 g (with battery)
IP RatingIEC 60529: IP65
Electromagnetic Compatibility (EMC)IEC 61326-1: Basic Electromagnetic Environment; CISPR 11: Group 1, Class A
Group 1: Equipment intentionally generates and/or uses conductive-coupled RF energy, which is necessary for its internal operation.
Class A: Equipment is suitable for use in all establishments other than domestic and those directly connected to a low-voltage power supply network that supplies buildings used for domestic purposes. There may be potential difficulties in ensuring electromagnetic compatibility in other environments due to conducted and radiated disturbances.
Caution: This equipment is not intended for use in residential environments and may not provide adequate protection to radio reception in such environments.

Models: Fluke 961A/961B/961C Temperature Humidity Logger with USB Connection

Fluke 961A/961B/961C

Fluke 961A/961B/961C Temperature Humidity Logger with USB Connection


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Fluke 961A Temperature Humidity Logger with USB Connection

Standard Accessories

  • Fluke 961A Temperature Humidity Logger
  • Mounting bracket and screws
  • Velcro hook and loop fastener

Fluke 961B Temperature Humidity Logger with USB Connection

Standard Accessories

  • Fluke 961B Temperature Humidity Logger
  • Mounting bracket and screws
  • Velcro hook and loop fastener

Fluke 961C Temperature Humidity Logger with USB Connection

Standard Accessories

  • Fluke 961C Temperature Humidity Logger
  • Mounting bracket and screws
  • Velcro hook and loop fastener