PEL Thermohygrometer

All in one meter and data logger compatible with the Tinytag range of loggers.

  • Measures ambient temperature (ºC or ºF) and relative humidity
  • Designed for museums, archives and libraries
  • Replaceable probe
  • Spot measurements with optional logging
  • Displays actual temp/RH while recording changing valves
  • Logging capacity 32000 readings
  • Logging interval 1 second to 10 days

PEL has researched together with leading conservators, curators and librarians to design and produce this thermohygrometer. The manufacturer is a worldwide respected company in the field of temperature and humidity measurement with strong research and development experience. We would not put the PEL logo on the meter unless we were completely satisfied that the technology was of the highest standard.

The meter can be switched off to save battery life with the level displayed, data logging mode is also shown. The actual RH and Temperature are displayed, changing from one to the other every 5 seconds.

Customers already using Tinytag data loggers can use the existing software and cable to activate the meter’s data logging. Alternatively if you are new to Tinytag, additional new data loggers can use the same software and cable.
See 'Recommended' tab for accessories.


Accessories required (See 'Recommended' tab below to purchase):

  • Windows Software and USB Cable - 9903-0010
  • (or purchase separately Windows Software - 9903-0009, and USB cable 9903-USBC)
  • PC Cable RS232 (not USB) - 9903-0007


See specification tab for more details.

Code Description Pack Size Price Stock QTY
P9903-7150 9903-7150 Thermohygrometer Tinytag Each £195.00 (ex VAT) In Stock
Specification Recommended

  • Temperature range -20ºC to +50ºC
  • Humidity range 5 to 95% RH
  • Accuracy ±0.5ºC ±3% RH
  • Display resolution 0.1ºC and 0.1% RH
  • Logger capacity 32,000 Readings
  • Logging interval 1 second to 10 days
  • Power supply 2 x 1.5V AA Alkaline Batteries
  • Dimensions 195mm x 65mm x 23mm
  • Weight 175g (including batteries)

  • Code Description Pack Size Price Stock QTY
    P9903-0009 9903-0009 Tinytag Explorer Software For Windows Each £49.00 (ex VAT) Low Stock
    P9903-0007 9903-0007 Datalogger PC Cable for Tiny Tag and View (not USB) Each £5.00 (ex VAT) In Stock
    P9903-0010 9903-0010 Tinytag Software & USB Cable combined Each £55.00 (ex VAT) In Stock
    P9903-USBC 9903-USBC Tinytag USB Cable Each £20.00 (ex VAT) In Stock
    P9903-9500 9903-9500 Tinytag Service Kit Each £5.00 (ex VAT) In Stock
    P9906-1501 9906-1501 TinyView Temp/RH Each £165.00 (ex VAT) In Stock
    P9903-1506 9903-1506 TinyView Temp/RH with external probe Each £180.00 (ex VAT) Due in Stock
    P9903-1500 9903-1500 Tinytag Ultra RH/Temp Data Logger Each £99.00 (ex VAT) In Stock
    P9903-1550 9903-1550 Tinytag Plus RH/Temp Data Logger 0-100% & -40 to +85C Each £150.00 (ex VAT) Low Stock
    P9903-1555 9903-1555 Tinytag Plus 2 RH/Temp Data Logger with external probe Each £165.00 (ex VAT) In Stock 48hr