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Parrs Hi-Accuracy Thermo-Hygrometer with Dew Point & Wet Bulb

Code: W509
  • £122 ex. VAT
  • (FREE UK Delivery)
  • ( £146.40 inc. VAT )
| Usually despatched within 24 hours
Why Buy From PARRS
Free Delivery on everything & No Quibble Returns No hidden charges at the checkout, delivery is free to UK mainland
3 Year Guarantee All products are backed by a minimum 3 Year Guarantee against manufacturing defects
Parrs Priority Enjoy great discounts with a Parrs Priority Customer Account
Buy from the Experts Over 130 years experience in supplying workplace equipment

High accuracy humidity and air temperature meter with wet bulb and dew point temperatures.

  • Ideal for a wide range of industrial and laboratory applications.
  • Displays temperature in °C or °F.
  • Dew point and wet bulb temperatures displayed at the touch of a button.
  • Simultaneous display of humidity and temperature readings.
  • Sampling rate of 2 times per second.
  • 55mm LCD dual display with backlight.
  • Connected probe with 2m coiled cable.
  • Data hold freezes displayed measurements.
  • Min/max Memory for temperature, humidity, dew point and wet bulb.
  • Low battery indication-Auto power off after approx. 15 minutes of no activity.
  • Impact-resistant ABS case with rubber moulded grip and tripod mount bush.
  • Tripod available to purchase separately.
  • Supplied with a soft carry case and battery.


 TemperatureHumidityDew PointWet Bulb
Range-35° to 100°C0% to 100%RH-35° to 100°C0° to 80°C
(-10° to +70°C)
(rest of range)
 ±2%RH (40%-60%)

±3%RH (20%-40%)
±3%RH (60%-80%)
±4%RH (0%-20%)
±4%RH (80%-100%)
 ±1.0°C ±1.0°C
Power1 x 9V PP3 Alkaline battery   
Dimensions185 x 66 x 33mm   


FREE Delivery
Delivery is FREE on all orders to UK Mainland.

Next Day Delivery
Products held in stock at our warehouse in Redditch state FREE NEXT DAY DELIVERY. Orders received for these products before 3.00pm are despatched the same day for delivery to you next day (excludes remote areas of the UK and weekend deliveries).

Lead times for non-stocked items are also shown on the product page. If you require a product earlier than stated please call our Customer Service Team Tel: 01527 585777.

No Quibble Returns/Refunds
We believe that PARRS products are the best you can buy. However, if for any reason you are not happy with your purchase, we shall replace the item or refund the purchase price subject to our standard Terms and Conditions.

Please call our Customer Service Team on Tel: 01527 585777 or email

Credit or Debit Card

We accept all major credit/debit cards, your payment will have to pass the 3D secure check and will then be processed immediately through our secure site. 

PayPal & Amazon Pay

For fast, easy payments you can use your PayPal account, once payment is received your order will be processed immediately.

Pay on Account 

Opt to pay by invoice on your 30 day credit account.

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