With LCD digital display and pulse generator for digital processing

hz5-dr-angleNew! With pulse generator for digital processing Pulse output with higher resolution (50 pulses = 1 litre) Consumption is digitally processable

Data can be statistically evaluated

Cost efficiency becomes calculable

Can be retrofitted to any existing heating or measuring system

Robust and durable

Use energy efficiently and economically

Optimally exploit oil price fluctuations

Constantly transparent heating oil consumption allows exact monitoring of energy costs and stores

Optimally monitor your oil consumption to check the energy saved after modernising your building

Exact Consumption Monitoring

HZ 5 DR oil meter with LCD digital display and pulse generator for digital processing


Technical Data

Measuring accuracy
±1 %
Throughput range:

0.7 to 40 l/h

0.6 to 34 kg/h

Reed contact (HZ 5 DR)
1 Pulse/0.1 l
Nominal pressure
25 bar
Loss of pressure
0.05 bis 0.2 bar
Heating oil types
EL according to DIN 51603
Temperature range
-5°C … +70°C
Burner performance
7 kW bis 400 kW
Connecting thread
DIN 3852-X-G 1/8“ internal
0.6 kg

Pulse Output

  • Connection via screw-clamp terminals
  • Reed contact: max. 30 VDC | Imax = 6 mA
    Rs = 1.0 K-Ohm/0.6W (observe polarity)
  • Principle: The power circuit of a counter or other registering device attached to the plus and minus terminal clamps is closed via the reed contact and 1.0 K-Ohm impedance. The input impedance should be at least 50 K-Ohm to ensure that the additional counter reaches its switching threshold.
  • Pulse value: 1 pulse = 0.02l | 50 pulses = 1l
  • Maximum frequency at 60l/h approx. 1Hz (Due to the reed contact [-debouncing-], use remote counter with dampened input)

LCD Counter

  • 6-digit with 0.1 l display resolution
  • 3V/950 mAh lithium-ion battery
  • Lasts at least 9 years (depending on temperature and moisture)


  • 0 to 60 degrees Celsius
  • Max. 85% RH, non-condensing
    CE-compliant electromagnetic compatibility
  • DIN EN 61326-1 2006-10 version


  • The 6-digit LCD display with 6mm high figures has a display resolution of 0.1 litres (1 decimal point).
  • A built-in 3V/950 mAh lithium battery supplies power. Its operational life is approx. 9 years.
  • The internal reed contact supplies 50 pulses per litre, or 20ml per pulse, to the output clamps. The electronics in the counter turn this into a decadic value with 0.1 litres after 5 pulses in order to operate the counter.
  • Due to the 1.0 K-Ohm internal impedance, a connected remote counter should have an input impedance of at least 50 K-Ohm.
  • The mounting instructions must be observed without fail if an additional counter is connected to the output.



Mounting Options

Available as accessories

  • Attachment sets for pressure-side fitting to 4/6 mm lines
  • Attachment sets for suction-side fitting (single-line system) to 8/10/12 mm lines.

Mounting Instructions

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