With mercury type hourmeters now banned in EU, ineed to quickly find an alternative. I have seen brands such as curtis and ENM but neither have exaclty what I am after. Prefer not to go custom made or modified. The most likely is LCD type.
Specs are
requirement: 7000 units over 2 years at least 2000 hours up to about 10000 hours. No better than 1/10 hour resolution required. 1 hour resolution OK for digital type. Bargraph type can be considered Battery powered and time stored by eeprom or similar User intervention to show time acceptable, unit usually not visible to user Trigger voltage lower than 2 volts if possible. External triggering to be achieved by timer being in a current source circuit with 300mA, so high triggering voltage (>2volts) means high current dissipation. (ie burden voltage) can possibly tolerate high burden voltage of 4.5 volts if all other parameters met. size- not bulky 60mm*12mm*12mm is ideal. cost $5 to $10
Can anyone point me to an alternative?