No BS Review: William Joseph Infrared Thermometer
The William Joseph Company, on the flyer that accompanies their Infrared Thermometer, commends me on my ability “to recognize really cool technology when I see it.”
Really cool technology. Heck, with the William Joseph Company supplying the copy, this review will write itself.
The William Joseph Infrared Thermometer (WJIT) could not be easier to use. Point it at the water and press the button. The WJIT displays the reading for some time before it shuts itself off. To switch from Fahrenheit to Centigrade, there is a pinhole button on the back that switches between the two.
The WJIT, however, suffers from one major flaw. it is not waterproof. Unlike William Joseph’s earlier model, where they had at least made an effort to waterproof the case, there are no gaskets, no lining. Nothing. If you study the picture, you will note that William Joseph, et al, made absolutely no provision for waterproofing the case.
- What’s wrong with this Picture?
I found out the hard way that this unit was not waterproof. I dropped it in the water. The creek torched the two LR44, 1.5v cells. The unit was worthless for the remainder of the day.
Sooner or later, if it is in your vest, it is going to get wet. Water is pretty much a constant with regard to fishing.
According to the flyer that accompanies the unit, the WJIT will give the most accurate readings when the unit is held as close to the water as possible. I noted that, if the unit is held within a foot, the WJIT measured, on average, a degree, or more, below the the actual temperature of the water’s surface (as measured using a Fluke 53II Thermometer with an Omega .005 Gauge, Teflon Thermocouple). The WJIT’s accompanying flyer indicates that for every foot away from the target, the unit will lose about 2 degrees of accuracy. I found that the WJIT tended to lose about a degree, toward freezing, for every foot it is moved away from the target. However, the ambient temperature seems to affect the accuracy of the unit. For water that is near freezing, 32.3 degrees, with an ambient temperature of 55.2 degrees, the WJIT measures about 10 to 16 degrees warmer as you move the unit away from the target.
Ironically, when measuring hot liquids, the unit failed miserably. I took several readings of a cup of coffee. The Fluke indicated that the coffee was 144.7 degrees, the WJIT consistently indicated that the coffee was 132.9 degrees. Since I spend little time fishing in coffee, I’m not really too concerned about the discrepancy.
To get the most accurate readings, as I’ve noted, the unit must be as close to the water as possible. In practice, I found that when I did hold it as close to the surface as possible, water tended to splash into the unit (the unit complained by displaying the undecipherable error message “Err_25.” In all fairness, though, the unit continued to work).
William Joseph Thermometer - Front View
Is this unit worth $39.00? I don’t think so. It provides moderately accurate, but not “dead-on, balls accurate, ” readings. When used in accordance with William Joseph’s directions, it can get pretty close. Fly fishing, though, is a sport that doesn’t really reward “pretty close.”
The WJIT just not sturdy enough to use. Sooner or later it will go under, or I’ll go under, with the unit attached. After that, it’s unusable.
Save your money.