| Overview | 
| Specifications | Download
Manual |
| Q. | What pulse rate do I need on my MD meter? |
| A. | It depends on the application. If you are using the
meter to pace a chemical metering pump, see "Using SeaMetrics Meters with
Liquid Metronics Metering Pumps" (also applicable to other brands of pump).
If the signal is going to a water treatment control, such as a cooling
tower control, which counts pulses, one pulse per 10 or 100 gallons is
very commonly used.
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| Q. | Should I order an MDE or an MDR meter? |
| A. | The only difference is the pickup. The MDE has a solid-state
pickup, the MDR has a mechanical reed switch, which is commonly called
a "dry contact". If your controller calls for a dry contact, go with an
MDR. All SeaMetrics controls, and LMI chemical metering pumps, accept
the MDE. The advantage of the ME is that it has no moving parts and in
theory can last forever, while the MDR has a finite life, like a light
bulb. (If you order an MDE for use with an LMI pump, be sure to specify
the LMI connector, which makes the meter totally plug-compatible with
the pump.)
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| Q. | Can I change the pulse rate on an MD meter? |
| A. | Yes. It requires unscrewing the retaining ring and
removing the lens. The instruction manual on this website has detailed
instructions.
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