Flow Meters
HYDRAMAG Electromagnetic flow & energy (BTU) meter
Water flowThermal energyThe Hydramag electromagnetic flow meter delivers accurate, low-maintenance volumetric measurement of conductive liquids from DN 4 to DN 800 — bidirectional, with accuracy to ±0.5% of reading and negligible pressure loss
Variant
Key features
- Accuracy to ±0.5% of reading (±0.25% on request), repeatability ±0.2%
- Wide DN 4–DN 800 range, bidirectional 0.06–12 m/s
- No moving parts — negligible pressure loss, virtually maintenance-free
- IP65 / IP67 / IP68 sensor protection for buried or outdoor installations
- 350° swivel display with a wide choice of liners & electrodes
About this product
Overview
The Hydramag is an electromagnetic meter for electrically conductive liquids (water, wastewater, chilled water and process media) with a conductivity of 20 µS/cm or higher. Configured as a flow meter it measures bidirectionally across DN 4 to DN 800 with accuracy to ±0.5% of reading (±0.25% on request); configured as a thermal energy (BTU) meter it adds heating and cooling energy measurement for large-bore district heating and cooling mains (DN 10 to DN 600). With no moving parts it holds accuracy over years of service and adds negligible pressure loss.
A wide choice of liners (hard/soft rubber, PTFE, PVDF, Rilsan, ETFE, PFA, ceramics) and electrodes (stainless steel 1.4571, Hastelloy C4, titanium, tantalum) match the meter to the process fluid; IP65 / IP67 / IP68 protection suits buried, flooded or outdoor installations; and a 350° swivel display keeps readings clear in any mounting position. Integration into M-Bus, Modbus and SCADA networks is via pulse, 4-20 mA, RS-485 (Modbus / M-Bus), M-Bus, HART* or microSD* outputs.
Downloads & documentation
Everything for specification & install
Technical data
Specifications
Full technical data below. Refer to the datasheet for ordering codes and dimensional drawings.
Technical Data
Flow configuration
| Power | 110...230 VAC (50/60 Hz), 24 VAC/VDC with polarity reversal protection |
| Input power | 4.6 VA |
| Transmitter mount | Meter mount (H – standard), Tmax 90 °C, Remote mount (F), Panel mount (P) versions, standard cable length 3 m |
| Diameter nominal | DN 4...800 (other DN upon agreement) |
| Lining material | Rubber (hard, soft, with potable water test certificate): DN 25...DN 800 (Tmax 70 °C) PTFE: DN 10...DN 80 (Tmax 150 °C for separate version), PVDF: DN 4...DN 20 Rilsan: DN 25...DN 800 (Tmax 70 °C for separate version) ETFE: DN 100...DN 800 (Tmax 150 °C), PFA, Ceramics (upon agreement) |
| Electrode material | CrNi steel DIN 1.4571, Hastelloy C4, Titanium, Tantalum |
| Frame | All-welded |
| Sensor material | Flanged– stainless steel and structural steel with polyurethane coating Wafer, Threaded, Food grade – stainless steel |
| Process connections | Wafer (PN25 only) Flanged DIN (EN1092) – carbon or stainless steel Threaded (EN 10226-1) Food grade (DIN 11851 fitting, clamp) |
| Pressure | PN10 (DIN), PN16 (DIN), PN25 (DIN), PN40 (DIN), PN64 (DIN), PN100 (DIN) 10K (JIS), 20K (JIS), 40K (JIS) 150lb (ANSI), 300lb (ANSI) |
| Min. conductivity of the measured fluid | 20 μS/cm (lower conductivity, upon agreement) |
| Flow meter measuring range (Qmin/Qmax) | Bi-directional for 0.2 to 12 m/s (1/60); 0.12 to 12 m/s (1/100); 0.06 to 12 m/s (1/200) |
| Flow meter accuracy | Accuracy up to 0.5 % (0.25% on request), Repeatability up to 0.2 % |
| Pressure loss | Negligible |
| Additional electrodes | Grounding and detection electrodes for empty piping (DN 10...DN 800) |
| Empty piping detection | DN 10...DN 800 |
| Display unit | LCD 2×16 characters |
| Controls | 2× external button (viewing values) 3× internal button (viewing + parameter changing) |
| Outputs | 2x Impulse/flow switch (max. 400 Hz), 4...20 mA, Interface RS485 (protocols M-BUS/Mod-Bus), M-BUS, HART*, micro SD* (Impulse and current outputs are passive with a possibility of being powered from internal power supply of the meter) |
| Max. ambient temperature | 55 °C |
| Flow sensor degree of protection | IP65, IP67, IP68 |
| Electronics degree of protection | Meter mount (H – head) , Remote mount (F) -IP65 / IP67 and Panel mount (P) – IP54 |
Flow Ranges
| Diameter (DN) mm | Qmin/Qmax Qmin [m3/h] | Qmax [m3/h] | ||
| 1/60 (0,2 m/s) | 1/100 (0,12 m/s) | 1/200 (0,06 m/s) | - (12 m/s) |
|
| DN 4 | 0.01 | - | - | 0.6 |
| DN 6 | 0.02 | - | - | 1.2 |
| DN 8 | 0.04 | - | - | 2.2 |
| DN 10 | 0.06 | 0.034 | - | 3.4 |
| DN 15 | 0.13 | 0.076 | 0.038 | 7.6 |
| DN 20 | 0.24 | 0.142 | 0.071 | 14.2 |
| DN 25 | 0.35 | 0.21 | 0.105 | 21 |
| DN 32 | 0.6 | 0.34 | 0.17 | 34 |
| DN 40 | 0.9 | 0.54 | 0.27 | 54 |
| DN 50 | 1.4 | 0.84 | 0.42 | 84 |
| DN 65 | 2.4 | 1.44 | 0.72 | 144 |
| DN 80 | 3.6 | 2.2 | 1.1 | 220 |
| DN 100 | 5.6 | 3.4 | 1.7 | 340 |
| DN 125 | 8.9 | 5.34 | 2.67 | 534 |
| DN 150 | 13 | 7.6 | 3.8 | 760 |
| DN 200 | 23 | 13.5 | 6.75 | 1350 |
| DN 250 | 35 | 21.1 | - | 2115 |
| DN 300 | 51 | 30 | - | 3050 |
| DN 350 | 70 | 41 | - | 4150 |
| DN 400 | 90 | 54 | - | 5426 |
| DN 500 | 141 | - | - | 8480 |
| DN 600 | 203 | - | - | 12200 |
Thermal energy / BTU configuration
Technical Data
| Power | 230 VAC (50/60 Hz), 24 VAC/VDC with polarity reversal protection |
| Input power | 9.6 VA |
| Type of electronics | Meter mount (H – standard), Remote mount (F) |
| Design | Compact (Tmax 90 °C), Separated (standard cable length 3 m) |
| Diameter nominal | DN 10...600 (other DN upon agreement with the manufacturer) |
| Lining material | Rubber (hard, soft, with potable water test certificate): DN 25...DN 400 (Tmin 0 °C , Tmax 70 °C) PTFE: DN 15...DN 80 (Tmin –25 °C , Tmax 150 °C for separate version) PFA: (upon agreement with the manufacturer) (Tmin –25 °C , Tmax 170 °C) ETFE: DN 100...DN 600 (Tmin –25 °C , Tmax 150 °C) |
| Electrode material | CrNi steel DIN 1.4571, Hastelloy C4, Titanium, tantalum |
| Frame | All-welded |
| Sensor material | Flanged– stainless steel and structural steel with polyurethane coating Wafer, Threaded, Food grade – stainless stee |
| Process connections | Flanged DIN (EN1092) Threaded (EN 10226-1) Clamp/Food Threaded (DIN 32676/DIN 11851) |
| Pressure | PN10– PN40 |
| Min. conductivity of the measured fluid | 20 μS/cm (at a lower conductivity, upon agreement with the manufacturer) |
| Flow meter measuring range (qi/qs) | 1/60, 1/100, 1/200 |
| Flow meter accuracy | up to 0.5 % (pro 0.1...10m/s) |
| Repeatability | up to 0.2 % (pro 0.1...10m/s) |
| Pressure loss | Negligible |
| Additional electrodes | Grounding and detection electrodes for empty piping (DN 10...DN 600) |
| Empty piping detection | DN 10...DN 600 |
| Display unit | LCD 2×16 characters, backlit |
| Controls | 2× external button (viewing values) 3× internal button (viewing + parameter changing) |
| Outputs | 2x Impulse/flow switch (max. 400 Hz), 4...20 mA, Interface RS485, M-Bus |
| Max. ambient temperature | 5-55 °C |
| Flow sensor degree of protection | IP65, IP67, IP68 |
| Electronics degree of protection | Meter mount (H – head) , Remote mount (F) -IP67 |
Flow Ranges
| Diameter (DN) mm | 1/60 (m3/h) L1 | 1/100 (m3/h) L2 | 1/200 (m3/h) L3 | Qp (m3/h) | Qs (m3/h) |
|---|---|---|---|---|---|
| DN 10 | 0.06 | 0.034 | - | 1.7 | 3.4 |
| DN 15 | 0.13 | 0.076 | 0.038 | 3.8 | 7.6 |
| DN 20 | 0.24 | 0.142 | 0.071 | 7.1 | 14.2 |
| DN 25 | 0.35 | 0.21 | 0.105 | 10.5 | 21 |
| DN 32 | 0.6 | 0.34 | 0.17 | 17 | 34 |
| DN 40 | 0.9 | 0.54 | 0.27 | 27 | 54 |
| DN 50 | 1.4 | 0.84 | 0.42 | 42 | 84 |
| DN 65 | 2.4 | 1.44 | 0.72 | 72 | 144 |
| DN 80 | 3.6 | 2.2 | 1.1 | 110 | 220 |
| DN 100 | 5.6 | 3.4 | 1.7 | 170 | 340 |
| DN 125 | 8.9 | 5.34 | 2.67 | 267 | 534 |
| DN 150 | 13 | 7.6 | 3.8 | 380 | 760 |
| DN 200 | 23 | 13.5 | 6.75 | 675 | 1350 |
| DN 250 | 35 | 21.1 | - | 1057.5 | 2115 |
| DN 300 | 51 | 30 | - | 1525 | 3050 |
| DN 350 | 70 | 41 | - | 2075 | 4150 |
| DN 400 | 90 | 54 | - | 2713 | 5426 |
| DN 500 | 141 | - | - | 4240 | 8480 |
| DN 600 | 203 | - | - | 6100 | 12200 |
Dimensions
| Connection (mm) | Constructional length (mm) | Total height in (mm) | ||||||
| Compact design | Compact design | |||||||
| Flanged | Wafer | Clamp Food thread | Threaded connection | Flanged | Threaded | Flanged | Threaded | |
| DN | L1 | L2 | L3 | L4 | H1 | H2 | H3 | H4 |
| DN 10 | 200 | 90 | 180 | 190 (3/8”) | 173 | 177 | 86 | 90 |
| DN 15 | 200 | 90 | 180 | 190 (1/2”) | 173 | 177 | 86 | 90 |
| DN 20 | 200 | 90 | 180 | 200 (3/4”) | 173 | 182 | 86 | 95 |
| DN 25 | 200 | 90 | 180 | 200 (1”) | 178 | 187 | 91 | 100 |
| DN 32 | 200 | 90 | 190 | 230 (1 1/4”) | 183 | 192 | 96 | 105 |
| DN 40 | 200 | 110 | 210 | 245 (1 1/2”) | 188 | 200 | 101 | 113 |
| DN 50 | 200 | 110 | 230 | 254 (2”) | 196 | 210 | 109 | 123 |
| DN 65 | 200 | 130 | 275 | - | 206 | - | 119 | - |
| DN 80 | 200 | 130 | 285 | - | 213 | - | 126 | - |
| DN 100 | 250 | 200 | 300 | - | 226 | - | 139 | - |
| DN 125 | 250 | 200 | - | - | 239 | - | 152 | - |
| DN 150 | 300 | 200 | - | - | 254 | - | 167 | - |
| DN 200 | 350 | 200 | - | - | 284 | - | 197 | - |
| DN 250 | 450 | - | - | - | 327 | - | 240 | - |
| DN 300 | 500 | - | - | - | 352 | - | 265 | - |
| DN 350 | 550 | - | - | - | 382 | - | 295 | - |
| DN 400 | 600 | - | - | - | 412 | - | 325 | - |
| DN 500 | 600 | - | - | - | 892 | - | 797 | - |
| DN 600 | 600 | - | - | 1025 | - | 930 | - | |
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