These mechanical gauges combine local pressure indication with upper- and lower-limit electrical contacts. A green pointer sets the lower limit and a red pointer sets the upper limit. The contacts provide signals for external relay, alarm or control circuits in water supply, compressed-air, hydraulic and general industrial equipment.
Direct-contact versions suit basic switching duties. Magnetic-assisted versions improve contact engagement and switching stability. Dry cases suit stable installations, while liquid-filled vibration-resistant versions provide damping for equipment exposed to vibration and pressure pulsation.
| Parameter | YX-60 | YXC-100 | EYXC-100 |
|---|---|---|---|
| Nominal dial | 60mm | 100mm | 100mm |
| Accuracy class | 2.5 | 1.6 | 1.6 |
| Contact type | Direct | Magnetic-assisted | Magnetic-assisted |
| Contact capacity | 10VA, resistive load | 30VA | 30VA configuration |
| Electrical rating | Maximum 1A; maximum 220VDC / 380VAC, subject to the 10VA limit | Use the contact-nameplate voltage | 220VAC configuration |
| Process connection | M14×1.5 | M20×1.5 | M20×1.5; G1/4, PT1/4 and other custom threads |
| Case | Steel | Nickel-plated steel | Powder-coated steel |
| Movement / connection | Brass / brass | Brass connection | Brass movement / solid brass connection |
| Ambient temperature | -5°C to 55°C | According to selected configuration | -40°C to 55°C |
YX-60 uses a bottom radial connection, weighs approximately 168.6g and operates at ≤85% relative humidity. Its temperature influence is ≤0.4% per 10°C departure from 20±5°C. Voltage, current and VA limits must all be satisfied by the connected load.
EYXC-100 positive-pressure full-scale choices are 0.1, 0.16, 0.25, 0.4, 0.6, 1, 1.6, 2.5, 4, 6, 10, 16, 25, 40 and 60MPa. Dial layout, thread, materials, span and accuracy can be customized. Factory checks include a 1.3×FS overpressure test and more than 1,000 pressure/leak-test cycles; these test conditions are separate from working-pressure limits.
| Model group | Nominal dials | Default process connection | Case configuration |
|---|---|---|---|
| EYXC-60 | 60mm | M14×1.5 | Dry, IP54 |
| EYXC-100 / EYXC-150 | 100mm / 150mm | M20×1.5 | Dry, IP54 |
| EYTNXC-60 | 60mm | M14×1.5 | Glycerin or silicone-oil filled, IP65 |
| EYTNXC-100 / EYTNXC-150 | 100mm / 150mm | M20×1.5 | Glycerin or silicone-oil filled, IP65 |
The wider family offers customized spans within -0.1 to 100MPa, accuracy classes 1.0, 1.6 or 2.5, and contact capacities of 10VA direct, 30VA magnetic-assisted or 50VA high-capacity magnetic-assisted. Contact voltage is selected as up to 220VAC or up to 380VAC according to the nameplate. Choose these options as a matched configuration.
| Wire color | Function |
|---|---|
| Yellow | Electrical common |
| Green | Lower-limit output, L |
| Red | Upper-limit output, H |
| Black | Protective earth |
Disconnect electrical power before opening the terminal box or changing settings. Press and turn the red knob to adjust the lower green pointer, release it, then engage and adjust the upper red pointer. Keep the upper setpoint above the lower setpoint. Verify switching with a stable pressure source: H conducts at the upper limit during pressure rise, and L conducts at the lower limit during pressure reduction.
Keep steady pressure below two-thirds of full scale, alternating pressure below one-half and momentary pressure below three-quarters. Use media compatible with copper alloys. Select a vibration-resistant version and suitable damping for severe vibration. Professional calibration and contact checks are recommended every six months.
