Hi guys,
Interesting thread. But just wanted to share that I am not sure if the closed loop circuitry makes any difference.
I have both the DigiCabi AD-70 and the DHC-60 and assuming that the hygrometers are all from similar sources with comparable accuracy (Inaccuracy), the stability of the AD or DHC series seems to be the same to me. I was expecting the DHC series to "outperform" the AD series honestly.... Oh yeah, both these sure beats the analog hygrometer type I had from Akarui or something.
AD series with the digital readout - Once you've "tuned" it via trial and error, keeping the same things in the cabinet gives the same RH% after some time. I presume this is cos the "outgassing" of moisture for the same # of lenses and bodies at approximate the same "dehumification power" of the cabinet results in a RH% that's stable to +/-1%. Gradually reaches an "equilibrium" if you plotted it out on a chart.....
DHC series with digital readout - I thought this would stay on the exact "set RH%" but it also deviates by +/-1%, same as the AD series. Someone explained to me that because the "dehumidification power" is sort of set to like close to max, it tends to overcompensate and then cuts out, and then the RH% goes up and then it turns on again and brings the RH% down and then the cycle repeats..... like a sawtooth graph if you plotted it out.....
Either way, this sure beats having a drybox .... and having to replenish the blue balls. I'd recommend a electric dry cab anytime, just not so sure that I'd pump in extra money for a closed circuit controlled series..... BUT it does give folks a sense of comfort that the RH% is well taken care of and needs no "trial and error".
BTW, here's the maths for the $/L (*I'm obviously bored..... :sticktong)
AD-500 @ $2.63 / L
AD-400 @ $2.67 / L
AD-300 @ $2.76 / L
AD-200 @ $3.13 / L
AD-160 @ $2.94 / L
AD-120 @ $3.13 / L
AD-100 @ $3.08 / L
AD-080 @ $3.10 / L
AD-070 @ $2.97 / L
AD-060 @ $3.13 / L
AD-050 @ $4.20 / L *Note : 40L
DB-036 @ $3.93 / L *Note : 30L
DHC-500 @ $3.09 / L : 17.5% over AD-500
DHC-400 @ $3.21 / L : 20.2% over AD-400
DHC-300 @ $3.02 / L : 9.6% over AD-300
DHC-200 @ $3.52 / L : 12.3% over AD-200
DHC-160 @ $3.43 / L : 16.5% over AD-160
DHC-120 @ $3.82 / L : 22.0% over AD-120
DHC-100 @ $3.78 / L : 22.7% over AD-100
DHC-080 @ $3.98 / L : 28.2% over AD-080
DHC-060 @ $4.30 / L : 37.3% over AD-060
DHC-040 @ $5.95 / L : 41.7% over AD-050 (40L model)
*No 30L DHC models......
Mere 9+% price difference if you go for the 300L models, but hey, how many of us hobbyist have THAT MUCH equipment to dry out ? *ahem* unless u oso keep a stash of chinese herbs etc......
A few interesting "facts"....
- AD-070 best bang for the buck below 200L, else it's the AD-500
- AD-060 is same $/L compared to the AD-120
- DHC-300 only 9.6% over the AD model
I'm sitting here typing this and so far, my AD series hasn't budge from the 40% setting but the DHC has been moving from 37% to 39% with my setting at 38%..... hmmmm.
Anyways, have fun figuring out what suits you ! Just sharing what I have....
*Anyone can add the AIPO prices in for comparison ? Hehehe...... :sweatsm: