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DZR Gear Wheel Flowmeter
Brand: KOBOLD Instruments, IncThe KOBOLD Gear Wheel Flow Meter Series DZR have been designed for a flow measurement for viscous fluids. The measuring unit consists of a pair of gear wheels which is moved by the flow according to the principle of gear wheel motor.
The bearings are according to the material combination either ball bearings or gliding bearings.
The movement of the gears is sampled without contact by means of two sensors located in the cover. Between sensor compartment and measuring chamber is located a pressure-resistant, non-magnetic separator plate.
The different versions vary through housing materials, bearing assembly, through the medium being used and the accuracy. The mounting position and flow direction is arbitrary.
Specifications
Brand
Accuracy
- ± 0.3 % for DZR-1 & DZR-6
- ± 0.5 % for DZR-2, DZR-4 & DZR-5
- ± 1 % for DZR-3
Ambient Temperature Range
- 0° to 60° C (32° to 140° F)
Approvals & Certifications
- ATEX - II 2 D Ex IA D 21 T125° C
- ATEX - II 2 G Ex IA IIC T4
- ATEX - M2 Ex IA I
Bearing Material
- Bronze
- Tungsten Carbide
BSP Connection
- G 1” Female
- G 1/2” Female
- G 1/8” Female
- G 3/8” Female
Circuit Protection
- Short Circuit Proof
Consumption
- 0.9 W - Power Consumption
- 120 mA - Current Consumption
Differential Pressure
- psi: 232.1 (kPa: 1,600, bar: 16) - Max.
Display
- 4-Digit LED Display
Duty Cycle
- ± 15 %
Electrical Connectors
- DIN 43650
- Plug Connection
Electrical Protection
- Reverse Polarity
Enclosure, Body Material
- 316L Stainless Steel
- Speroidal Iron
Environmental Protection
- IP65
Filter
- 20 micron
Flow Rate
- 0.008-2 to 3-700 L/minute
Materials of Construction
- 5117 Stainless Steel - Gear Wheels
- Cast Iron
- F51 Stainless Steel - Gear Wheels
Maximum System Pressure
- psi: 4,569 (kPa: 31,500, bar: 315) for DZR-x011 to DZR-x015
- psi: 5,802 (kPa: 40,000, bar: 400) for DZR-x001 to DZR-x010 & DZR-017/-18
Output
- 0 to 20 mA
- 2 Pulse Output Signals, Rectangular
- 250 ohms - Max.
- 4-20 mA
- 50 ohms (10 Vdc)
Output Format
- Relay Output - 2 x Normally Open
Power Requirement
- 0.3 W
Ratio
- 1:1
Relay Output
- 24 V / 1 A
Repeatability
- < 0.1 % of Measured Value
Resolution
- 62.5 to 40,000 Pulse/Litre
Seat / Seal Material
- EPDM
- FEP
- FPM
Supply Voltage
- 12 Vdc (± 20 %)
- 24 Vdc (± 20 %)
Switch Type
- PNP
Temperature Range
- 0° to 80° C (32° to 176° F) - Fluid Temperature
- Maximum
