WHX
Based on DIN 14462:2023-07, this testing device has been designed to determine flow and static pressure and the resulting volume flow. Each essential component (orifice plate, manometer) and the entire WHX testing device are provided with unique serial numbers. Calibrated at our in-house test stand with traceable standards according to EN 17025, each component, as well as the entire device, is calibrated and documented in a corresponding test protocol. The consistent implementation of the requirements for a measuring system according to DIN 14462:2023-07, EN671, and TRVB 128 S ensures that measurement uncertainties for volume flow determination are minimized and reproducibility is ensured.
Fire hose reels are fixed water withdrawal points in buildings, essential for preventive fire protection. A form-stable hose lines, serve quickly and efficiently extinguish fires in case of an emergency.
Requirements: DIN 14462:2023-07, TRVB 128 S and more
To ensure firefighting water facilities are always ready for use, they need to be checked and maintained at regular annual intervals. This process must be carried out by qualified personnel according to the regulations of the Operational Safety Ordinance and the Technical Rules for Operational Safety. Detailed information on planning, installation, operation, and maintenance can be found in the standards DIN 14462 and DIN EN 671-3.
Each essential component (orifice plate, manometer) and the entire WHX testing device are provided with unique serial numbers. Calibrated at our in-house test stand with traceable standards (EN 17025), each component and the entire device are calibrated and documented in a corresponding test protocol.
The consistent implementation of the requirements for a measuring system according to DIN 14462:2023-07, EN671, and TRVB 128 S ensures minimized measurement uncertainties for volume flow determination and associated reproducibility.
3D - View
Versatile Orifice Plate Selection for Standard Compliance
By choosing the orifice plate set, depending on the need, a testing device can measure flow and static pressure, and consequently the volume flow of fire hose reels according to both standards (DIN 14462 and TRVB 128 S).
| Flow Rate | k-Factor | Minimum Flow Pressure to be Demonstrated |
|---|---|---|
| 24 lpm | 17 | 0,20 MPa (2,0 bar) |
| 48 lpm | 34 | 0,20 MPa (2,0 bar) |
| 100 lpm | 58 | 0,30 MPa (3,0 bar) |
| 200 lpm | 115 | 0,30 MPa (3,0 bar) |
| 300 lpm | 173 | 0,30 MPa (3,0 bar) |
| 200 lpm | 94 | 0,45 MPa (4,5 bar) |
| 400 lpm | 189 | 0,45 MPa (4,5 bar) |
| 600 lpm | 283 | 0,45 MPa (4,5 bar) |
| Flow Rate | Minimum Flow Pressure |
|---|---|
| 60 lpm | 0,30 MPa (3,0 bar) |
| 200 lpm | 0,30 MPa (3,0 bar) |
| 300 lpm | 0,40 MPa (4,0 bar) |
| 300 lpm | 0,55 MPa (5,5 bar) |
| 600 lpm | 0,30 MPa (3,0 bar) |
| 600 lpm | 0,40 MPa (4,0 bar) |
| 600 lpm | 0,50MPa (5,0 bar) |
| 600 lpm | 0,55 MPa (5,5 bar) |
| 800 lpm | 0,15 MPa (1,5 bar) |
For precise, safe, and reproducible measurement, the devices should be recalibrated at the factory at intervals of 24 … 36 months. Key points for determining the calibration interval include:
These points are to be determined and monitored by the user within the recommended timeframe of 24 ... 36 months.
For measuring instruments used for regular inspection, occupational safety verification, quality assurance of products and services, as well as under extreme environmental conditions, we recommend calibration after 12 months.
WHX0-Set2
DIGITAL flow meter including orifice plates, digital manometer, quick coupling, fixing aid, calibration certificate, and transport case.
ZB-WHX-028
The 45° Connection Bend Set comprises an aluminium adapter piece for orifice plates (connection adapter, including seal), a 45° pipe bend made of high-quality cast material with G2 internal thread and G2 external thread for adaptation to a mobile flushing container.
ZB-WHX-029
The 90° Connection Bend Set includes the aluminium adapter piece (straight connection piece, including seal) for orifice plates, a 90° pipe bend made of high-quality cast material with G2 internal and external threads for adaptation to a mobile flushing container.
ZB-WHX-030
The Storz C Adapter Set consists of an aluminium adapter piece for orifice plates (connection adapter, including seal) and a fixed Storz C coupling, allowing the WHX to be easily connected to a C-52 hose for wall hydrant testing.
ZB-WHX-019
The connection adapter has a G2 external thread for adaptation to a mobile flushing container and serves as a holder for the orifice plates.
ZB-WHX-031
The 45° pipe bend has a G2 external thread and a G2 internal thread for adaptation to a mobile flushing container.
ZB-WHX-032
The 90° pipe bend has a G2 external thread and a G2 internal thread for adaptation to a mobile flushing container.
ZB-WHX-033
The thread adapter from G2 to G2 ½ external thread is for the 45° and 90° connection bends, allowing them to be mounted on a flushing container with either G2 or G2 ½ threads.
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ZB-WHX-027
The Screw Cap DN 150 Set consists of a PE-HD screw cap, a 45° connection piece with G2 internal and external threads made of high-quality plastic, and the aluminium adapter piece (connection adapter, including seal) for the orifice plates. The DN 150 screw cap allows the system to be ideally mounted on an IBC container for hydrant testing.
| Measurement Accuracy | |
|---|---|
| Manometer: | Accuracy Class 0,5 |
| Process Conditions | ||
|---|---|---|
| Display Range | 0 ... 1,6 MPa (16 bar) | |
| Connection: | Storz C-52 | |
| Measurement Ranges: | ||
| 24 l/min. | at 0,20 MPa (2,0 bar) | |
| 48 l/min. | at 0,20 MPa (2,0 bar) | |
| 100 l/min. | at 0,30 MPa (3,0 bar) | |
| 200 l/min. | at 0,30 MPa (3,0 bar) | |
| 300 l/min. | at 0,30 MPa (3,0 bar) | |
| 200 l/min. | at 0,45 MPa (4,5 bar) | |
| 400 l/min. | at 0,45 MPa (4,5 bar) | |
| 600 l/min. | at 0,45 MPa (4,5 bar) |
| Operating Conditions | |
|---|---|
| Medium: | Water |
| Operating Temperature: | 4 ... 50 °C (39.2 … 122 °F) |
| Max. Operating Pressure: : | 1.6 MPa (16 bar) |
| Certificate of Measurement Accuracy | |
|---|---|
| Manometer: | with |
| Orifice Plate(s) with Manometer: | with |
| Structural Design | |
|---|---|
| Housing Tube: | Anodized Aluminium |
| Hose Shut-off with Bracket Handle: | Aluminium |
| Pistol Grip: | Plastic |
| Storz Coupling: | Aluminium |
| Orifice Plates: | Stainless Steel |
| Seal: | NBR |
| Union Nut: | Aluminium |
| Fixing Aid: | Stainless Steel |
For recalibration of the testing devices, please send the complete system consisting of digital manometer, orifice plate(s), union nut, ball valve, measuring device body, and hose connection – preferably in the associated transport case.
The scope of delivery for the recalibrated WHX testing device includes the testing device sent to us, a corresponding calibration seal on the measuring device body with the calibration date (month/year), and the detailed calibration certificate.
Our own standards for good service entail returning the sent testing devices within about 5 ... 7 working days. If there are any unexpected deviations and/or repairs, we communicate these promptly and directly.
Yes, for this purpose, we have straight connection pieces with a 45° and 90° bend for a Storz C connection in our delivery program.
Yes, for this purpose, we recommend our "pressure-neutral" flush box HTLDV080 from our delivery program.
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