Post by Professor Lake Shore on Jan 31, 2017 16:33:35 GMT -5
On my temperature instrument, why is 25 ohm and 50 ohm my only choices for heater power?
The heater outputs are designed to work optimally with 25- or 50-ohm heater resistance, so they’re considered “standard” values. But heater resistance can be set for other values, too. For any resistance less than 50 ohms, use the 25 ohm setting; and for any higher heater resistance, use the 50 ohm setting. The user max. current setting is useful when using a non-standard heater resistance value. For more information about the User Max Current setting, see the table in the instrument’s user manual that provides examples of different heater resistances and max. current settings, and the resulting maximum heater power.