
Pelton Wheel Flow Sensor
measuring
•
monitoring
•
analyzing
DPM
● Flow Range: 0.24...4.8 GPH to 0.8...80 GPH
● Brass or Stainless Steel Bodies
● Frequency Pulse or 4-20 mA Outputs
● Long-Life Sapphire Axle/Bearing Assembly
● Compact Design
KOBOLD companies worldwide:
ARGENTINA, AUSTRALIA, AUSTRIA, BELGIUM, BULGARIA, CANADA, CHILE, CHINA, COLOMBIA,
CZECH REPUBLIC, EGYPT, FRANCE, GERMANY, HUNGARY, INDIA, INDONESIA, ITALY, MALAYSIA,
MEXICO, NETHERLANDS, PERU, POLAND, REPUBLIC OF KOREA, ROMANIA, SINGAPORE, SPAIN,
SWITZERLAND, TAIWAN, THAILAND, TUNISIA, TURKEY, UNITED KINGDOM, USA, VIETNAM
01/09-19-2018
KOBOLD Instruments, Inc.
1801 Parkway View Drive
Pittsburgh, PA 15205
Main Ofce:
1.800.998.1020
1.412.788.4890
info@koboldusa.com
www.koboldusa.com

Pelton Wheel Flow Sensor Model DPM
Description
The DPM Series flow sensor uses the pelton wheel principle to
measure the flow of water and water-based, low-viscosity liquids that
are optically transparent. Liquid passes through a nozzle at the inlet of
the flow body and is precisely directed onto a flat-blade pelton turbine.
The flow sensor’s pelton turbine wheel rotates at a speed proportional
to flow rate. The movement of the pelton wheel is detected optically,
and the signal from the optical sensor is processed as an amplified
pulse or 4-20 mA signal, both of which are proportional to flow rate.
In addition to the DPM Series pelton wheel flow sensor’s compact
design, the inlet flow is redirected via a nozzle; therefore, no inlet or
outlet straight piping is required and allows the unit to be mounted in
any orientation with the axle remaining in the horizontal plane. These
features make the DPM Series flow sensor ideal for mounting in
locations where space is tight.
Specifications
Accuracy
DPM..K000 & DPM..F300: ±2.5% of f. s.
DPM..L, DPM..C & DPM..Z: ±1.5% of f. s.
Maximum Pressure: 230 PSIG
Operating Temperature: -10...176 °F
Electrical Protection: IP 65
Materials of Construction
Housing: 316L SS or Ni-Plated Brass
depending on model number
Nozzle: 316L SS
Axle/Bearing: Sapphire
Pelton Wheel: Polypropylene
Receiver: Polysulfone
O-ring: NBR for Brass housings,
FKM for 316L SS housings
Electrical Specifications
Frequency Output
Output Type
DPM..K000: NPN, open collector,
10 mA max.
DPM..F300: PNP, open collector,
25 mA max.
Input Power
DPM..F300: 24 VDC ±20%
DPM..K000: 4.5-12 V
Frequency Range: Based on model number
2
DC
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Electrical Connection
DPM..K000: 5 ft. PVC cable
DPM..F300: Micro-DC plug,
4-pin male
4-20 mA Output
Output Type: 4-20 mA, 3-wire
Max. Loop Load: 500 ohms
Power Requirement: ±24 VDC 20%
Electrical Protection: IP 65
Electrical Connection: Micro-DC plug,
4-pin male or
DIN 43650
(Hirschmann) plug
Compact Electronics
Output Types: Analog output with
1 open collector
switch or 2 open
collector switches
Analog Output: 4-20 mA, 3-wire
RL<500 ohms
Switch Type: PNP open
collector based on
ordering code
Switch Rating: 300 mA Max. short
circuit protected
Power Requirement: 24 VDC ±20%
Display Type: 3 digit LED
User Programmable
Functions: Transmitter span,
switch setpoint,
lockout code
Housing: 304 SS
Electrical Connection: M-12 Micro-DC plug,
5-pin male
No responsibility taken for errors;
subject to change without prior notice.

Order Details (Example: DPM-1170 N1 K000)
4.46"
0.51"0.49"
D
1.25"
1.57"
M4
M12x1
3.11"
0.51"
0.49"
D
M4
1.25"
1.57"
Pelton Wheel Flow Sensor Model DPM
Range
Water
[GPH]
Approx
Frequency
[Hz] at
Max Flow
DP at
Max. Flow
[PSI]
Housing Material
Brass 316L SS
Fitting
Size
Output/Electronics
0.24...4.8 165 13.5 DPM-1153.. DPM-1553..
0.8...11.1 228 16.8 DPM-1157.. DPM-1557..
..K000 = OEM Frequency Output with 5 ft. PVC Cable
..F300 = Frequency Output Micro-DC Plug
0.8...15 217 17.7 DPM-1160.. DPM-1560..
..N1.. = 1/8" NPT
..L343 = 4-20 mA, 3-Wire Output with Micro-DC Plug
..N2.. = 1/4" NPT
0.8...30 344 13.2 DPM-1170.. DPM-1570..
..L443 = 4-20 mA, 3-Wire Output with DIN 43650 Plug
..G1.. = G 1/8
0.8...48 372 8.8 DPM-1180.. DPM-1580..
..G2.. = G 1/4
..C34P* = Compact Electronics, 4-20 mA , 1 PNP Switch
..C30R* = Compact Electronics, 2 PNP Switches
0.8...60 415 8.3 DPM-1190.. DPM-1590..
..Z340* = Analog Indicator + 4-20 mA, 3-Wire
0.8...80 439 8.3 DPM-1195.. DPM-1595..
Accessories: Part Number 807.037 = Mating 4 pin Micro-DC connector with 6 ft. cable for output ..F300 & ..L343
Part Number 807.007 = Mating 5 pin Micro-DC connector with 6 ft. cable for output ..C34P, ..C30R & ..Z340
* Please specify flow direction when ordering
Plug-On Display: for Model DPM-..L443 (4-20 mA Output, DIN Plug Connector)
4-Digit LED, Plug Connector DIN 43 650, 3-wire, Power Supply Via Analog Output AUF-3000
Dimensions
DPM with Frequency Output (..K000)
M4
1.25"
Description Model Number
DPM with Micro-DC Plug (..F300, ..L343)
M4
0.51"
0.49"
0.51"0.49"
1.25"
No responsibility taken for errors;
subject to change without prior notice.
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3

Pelton Wheel Flow Sensor Model DPM
Dimensions
DPM with Compact Electronic (..C30R, ..C34P) DPM with ..L443 Output (Shown with AUF-3000 Display)
168
DPM with Analog Output and Pointer Indicator (..Z340)
M12x1
161
Ø 79,7
M4
13
32
12,5
11,5
40
M4
D
32
40
4
13
12,5
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No responsibility taken for errors;
subject to change without prior notice.