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 Posted - 31/07/2008 : 19:33:38
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An on/off stat is a dimming stat; they turn on the heat source until they reach the desired temp, then turn off until the sensor realizes the temp drop, then it turns back on again.
The table lamp dimmers are similar to the pulse stats that I explained before, but with the table lamp dimers, the room the viv is in shouldn't rise or fall in temp (fluctuate) often & should remain stable within a couple of degrees C. Then the temp will remain the same constantly when the table lamp dimmer is set. I have found mine to work perfect & they're on ebay for like £6 incl. del. !
Hope you can sort it but for now a 4.5*C fluctuation I wouldn't worry about too much. |
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Blackecho
The Corn Snake Admin
United Kingdom
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dazb
The Corn Snake Moderator
United Kingdom
1278 Posts |
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Blackecho
The Corn Snake Admin
United Kingdom
4379 Posts |
Posted - 31/07/2008 : 20:12:44
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I do have one of those, just trying a new style with my new vivs but wasn't expecting such a large temperature range, thought it might be +/- 1C, not +/- 2C
Cheers though. |
 
www.theroyalpython.co.uk/forum
Location: Rotherham
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Blackecho
The Corn Snake Admin
United Kingdom
4379 Posts |
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Blackecho
The Corn Snake Admin
United Kingdom
4379 Posts |
Posted - 31/07/2008 : 20:29:05
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'HabiStat Dimming Thermostat
The Dimming thermostat is the most accurate method of temperature control and will control a wide variety of heaters. It requires a minimum load of 40 watts and has a maximum load capacity of 600 watts. It is the only thermostat that can be recommended for use with incandescent light bulbs and uses the latest technology in a manner similar to the pulse proportional thermostat. Instead of pulses of power being supplied to the heater, it is supplied with a continuous but variable supply of power or voltage. In principle this has a similar effect to the light dimmers or rheostats used in the home.
How a dimming thermostat works.
The desired temperature is set on the dial. Both the cage and the heater are cold so the heater is supplied with full power from the thermostat. As the set temperature is neared, the power to the heater is reduced steadily until, at the set temperature, it levels out. With this steady supply of power to the heater it makes for exceptionally accurate temperature control and extends the life of heaters considerably.' |
www.theroyalpython.co.uk/forum
Location: Rotherham
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Blackecho
The Corn Snake Admin
United Kingdom
4379 Posts |
Posted - 31/07/2008 : 21:46:16
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So there's not much between pulse and dimming, but the on/off one I purchased is pretty rubbish  |
www.theroyalpython.co.uk/forum
Location: Rotherham
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891 Posts |
Posted - 31/07/2008 : 22:54:56
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Dimming is on/off. If the dimming stat is linked to a light, when it reaches the set max temp the light goes off then when the temp drops the stat kicks in again & the light comes back on.
If you linked a pulse stat to a light it would be constantly flickering or going on off on off on off on off, etc, etc.
The table lamp dimmer if linked to a light will keep the light on but the higher the setting the brighter the light & hotter the temp will be. So if linked to a heatmat the higher the setting the hotter the heatmat. |
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Blackecho
The Corn Snake Admin
United Kingdom
4379 Posts |
Posted - 01/08/2008 : 08:32:15
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| The Habistat Dimming Thermostat I quoted above says that it doesn't turn it on and off, it just reduces the power, effectively dimming the bulb but never actually going off. |
www.theroyalpython.co.uk/forum
Location: Rotherham
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Posted - 01/08/2008 : 10:08:01
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| Yeah I know what you mean now I had a 25w miniture bulb (golf ball) in a glass tank before & I now remember when the output was at its lowest, just the filiment in the bulb would glow very very dim - which caused the bulb to actually break over time. (not shatter) |
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Blackecho
The Corn Snake Admin
United Kingdom
4379 Posts |
Posted - 01/08/2008 : 10:16:44
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So my choices are:
A) An on/off Stat that varies by ~5C
B) A Pulse Proportional Stat that is going to flicker the light on and off but is more accurate
C) A Dimming Thermostat which won't flicker, is accurate, but will kill the bulb quicker!
Should have stuck with mats! |
www.theroyalpython.co.uk/forum
Location: Rotherham
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Posted - 01/08/2008 : 10:39:13
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| Well the last stat was I think because the golf ball bulbs were not really made for heating vivariums, but do work as a heat/light source. Basically I didn't use them again for that as they broke down. Try a ceramic bulb with a guard & use a pulse stat or go back to a heatmat. Is this for a corn snake or royal ? |
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Blackecho
The Corn Snake Admin
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