The EM5000 measures positive, negative or differential pressure using a magnetic helix movement and a clear pointer dial. It requires no external power or liquid fill. A reinforced nylon housing, polycarbonate lens and PTFE pointer provide a compact assembly for HVAC, filter monitoring, cleanrooms, ventilation ducts, fans, dust extraction and laboratory equipment.
| Parameter | Specification |
|---|---|
| Measuring medium | Air and compatible noncorrosive gases |
| Pa / kPa scales | 0–125Pa, 0–250Pa, 0–500Pa, 0–1kPa, 0–2.5kPa and 0–3kPa |
| Water-column scales | 0–25mmH₂O and 0–50mmH₂O |
| Accuracy | ±5%FS at 21.1°C |
| Operating temperature | -7°C to 60°C for the current specified configuration |
| Continuous total-pressure rating | 30psig, approximately 2.067bar, at either pressure port |
| Surge-pressure rating | 50psig, approximately 3.445bar |
| Housing / lens | Reinforced nylon / polycarbonate |
| Pointer | PTFE |
| Finish | Black |
| Standard connection | Rear barbed connections for 3/16in inside-diameter tubing |
| Optional connection | 1/8in NPT male pressure ports |
| Reference overall dimensions | 73.82mm × 61.93mm |
| Reference weight | 170g |
| Power supply | Not required |
Total-pressure ratings refer to the pressure applied to the case connections, separately from the low differential measuring span. Surge capacity does not increase the continuous operating rating.
To zero the gauge, vent both ports and keep the instrument in its final mounting position. Remove the front cover by turning it counterclockwise, then use the hex key on the adjustment below the ZERO marking. Replace the cover after adjustment. Re-zero whenever the operating orientation changes; ranges below 5inH₂O equivalent use vertical mounting unless separately calibrated.
| Feature | M3 mounting construction |
|---|---|
| Flush panel opening | Ø66.5mm |
| Mounting holes | Two M3 threads on 59.85mm centers |
| Pressure-port positions | 22.66mm vertical spacing and 1.44mm lateral offset |
| Port reference diameters | Ø10.2mm and Ø6.3mm |
| Bracket holes | Two Ø3.5mm holes on 59.85mm centers; Ø19.75mm center opening |
| Surface-mount panel holes | Two Ø10.5mm pressure-port clearance holes and two Ø4mm mounting holes |
| Mounting hardware | Two M3×40mm screws, two M3 nuts and one flush-mount bracket |
For flush mounting, insert the gauge through the panel and place the bracket over the upper port marked “-”. Secure the screws and nuts. For surface mounting, pass the two pressure ports through their clearance holes and secure the gauge vertically. Keep the overpressure-relief opening unobstructed.
The upper port is low pressure, marked LO or “-”; the lower port is high pressure, marked HI or “+”. For positive pressure, connect HI and vent LO. For vacuum, connect LO and vent HI. For differential pressure, connect the higher and lower pressures to the matching ports. Avoid overtightening optional threaded fittings.
No lubrication or scheduled maintenance is required. Keep the cover clean, inspect the pressure tubing and periodically check zero with both sides vented. For a calibration check, connect a suitable reference gauge in parallel through a tee, apply pressure slowly and compare stable readings.
The English manual includes complete operating procedures and both metric and earlier imperial mounting details. Use the dimensions and fasteners matching the supplied construction.
