E-Mon D-Mon Impeller Meters
Hot Water Meters with Pulse Output

H130 3/4" Single-jet (Inferential) Impeller Meter
The impeller movement is transferred by a magnetic coupling to the hermetically vacuum sealed register. (Formerly model 5UM-20)

H150 1" & 1 1/2" Multijet (Inferential) Impeller Meter
The impeller and magnet are the only moving parts in the measuring chamber. The impeller movement is transferred by a magnetic coupling to the evacuated and hermetically sealed register, which can be turned to any position for easy reading. Installation. The meter must be installed in a clean pipeline, free from any foreign materials. The meter shall be installed with the direction of flow as indicated by the arrow cast in the meter case. The meter may be installed in horizontal or inclined lines up to 45°, with the register facing upward. Note, the meter must have 10 pipe diameters ahead of the unit and 5 after, of straight pipe, to insure proper flow through the meter. (Formerly model KMM)

H190 (MTH) 1" & 1 1/2"  High Temp / Multijet (Inferential) Impeller Meter
The impeller and magnet are the only moving parts in the measuring chamber. The impeller movement is transferred by a magnetic coupling to the vacuumized and hermetically sealed register, which can be turned to any position for easy reading. Installation . The meter must be installed in a clean pipeline, free from any foreign materials. The meter shall be installed with the direction of flow as indicated by the arrow cast in the meter case. The meter may be installed in horizontal or inclined lines up to 45°, with the register facing upward. Note, the meter must have 10 pipe diameters ahead of the unit and 5 after, of straight pipe, to insure proper flow through the meter.

H4300 Sizes 2", 3", 4" & 6" Woltman Horizontal Impeller (Inferential) Meter
The impeller and magnet are the only moving parts in the measuring chamber. The impeller movement is transferred by a magnetic coupling to an evacuated and hermetically sealed register, which can be read in any of four cardinal points without breaking the calibration seal.  (Formerly model WPH)

H4400 2", 3" & 4" Woltman Vertical Impeller (Inferential) Meter
The impeller, shaft and magnet are the only moving parts in the measuring element. The magnetic coupling transfers the impeller movement to an o-ring sealed register.  Low Flow Performance At Its Highest For Hot Water This family of meters offers a wide measuring range with improved low flow performance.