TPi 595C1 (http://www.tpi-thevalueleader.com/L%20595-0905.pdf) vs Fluke 971 (http://ca.fluke.com/caen/products/Fluke+971.htm?catalog_name=FlukeCanada&category=IAQ_AT(FlukeProducts))
(http://hvactechgroup.com/hvacforum/images/TPI595C1.jpg)
(http://hvactechgroup.com/hvacforum/images/Tpis95specs.jpg)
(http://hvactechgroup.com/hvacforum/images/Fluke971.jpg)
(http://hvactechgroup.com/hvacforum/images/fluke971specs.jpg)
The TPi 595C1 retails for around $350 Canadian, and the Fluke971 retails for around $245 Canadian.
I think this is a good one and it is much cheaper:
Display °F or °C
Data hold
Auto power off
Display relative humidity and temperature simultaneously
Specifications
Temperature range: -4° to 122°F (-20° to 50°C)
Size: 7" x 1-7/8" x 1" (178 x 48 x 25 mm)
Sensors:
Temperature: thermistor bead
Humidity: polymer film (capacitance)
Batteries: 2 standard AAA
Operating range: 4° to 122°F (-20° to 50°C) 0-100% RH
Resolution: 0.1°F/C, 0.1% RH
Accuracy: Relative humidity functions (± 3% RH at 25°C)
Temperature ± 1°F (0.6°C)
Auto-power-off: 5 min. (defeatable)
Response time: Approx. 60 sec.
Update rate: 2-6 sec. depending on function
Weight: 2.65 oz. (75 g)
(http://hvactechgroup.com/logos/yellowjacket.jpg)
Yeah the yellow jacket is nice, same humidity response time, 1/2 the batteries and 1/2 the cost of the fluke. Around $120 Canadian.
That Yellow Jacket look allot like my old UEI meter I was using . I switched to a Amprobe for now.