The TE-5007XZ is a 7-day mechanical timer recognizable by its bright yellow timer dial that uses a series of on/off trippers to set the sampling schedule for high volume ambient air samplers. This 220-volt 60Hz model provides reliable timing control for EPA-compliant TSP and PM10 sampling operations requiring extended unattended sampling periods.
Mechanical Operation
The TE-5007XZ uses a mechanical clock mechanism with adjustable trippers around the timer dial to program sampling schedules. The timer controls constant flow rate through filter media while turning the sampler on and off and registering elapsed time. This mechanical design ensures consistent operation without reliance on digital components that may be affected by power fluctuations or electrical interference in field environments.
Key Specifications
- Voltage: 220 volts AC
- Frequency: 60 Hz
- Timer cycle: 7-day programmable
- Control method: Mechanical on/off trippers
- Visual indicator: Bright yellow timer dial
Compatibility
The TE-5007XZ is compatible with Tisch Environmental's complete line of high volume air samplers including:
- TSP and PM10 mass flow controlled (MFC) systems
- Volumetric flow controlled (VFC) PM10 particulate samplers
- TSP samplers meeting EPA requirements for flow rates between 39-60 cfm per 40 CFR Part 50, Appendix B
- PM10 samplers measuring particles 10 microns or less per 40 CFR Part 50, Appendix J
For 220V 50Hz applications, use model TE-5007X. For 110V 60Hz systems, use standard model TE-5007. Replacement clock drive mechanism available as part TE-5007-4XZ for this 220V 60Hz configuration.
Installation and Setup
The male cord set of the timer plugs into line voltage and integrates directly with the sampler's motor control system. The bright yellow dial provides clear visual indication of current timer position and programmed sampling periods. Mechanical trippers can be positioned around the dial to create custom sampling schedules matching specific monitoring requirements or regulatory protocols.
Applications
Essential for ambient air quality monitoring programs requiring:
- EPA-compliant TSP and PM10 sampling per federal reference methods
- Extended unattended operation in remote monitoring locations
- Consistent sampling schedules for regulatory compliance data
- Ambient air monitoring to determine suspended particulate levels and impact assessment of specific sources on ambient particulate levels