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The PRIMA CO2 Flowmeter Regulator with Heater Model 838CR-H (110V) is essentially the same high-quality, specialized regulator as the 220V model, with one critical difference: the voltage requirement for the built-in heater.
This specific model is designed for use in regions or facilities that operate on a 110V (or 120V) electrical system, ensuring the heating element functions correctly.
Key Specifications for 838CR-H (110V)
The core regulating and flow measurement specifications are consistent across the 838CR-H series, as certified to EN ISO 2503 standard:
| Feature |
Specification |
Detail |
| Gas Type |
Carbon Dioxide CO2 |
Used primarily for MIG/TIG welding and industrial applications. |
| Heater Voltage |
110V (or 120V) AC |
The key difference—must match the wall power socket voltage to prevent freezing. |
| Body Construction |
Rugged Forged Brass |
Provides strength, safety, and durability. |
| Inlet Pressure |
Max 4,500 psi approx 310bar) |
Calibrated gauge shows the high pressure inside the CO2 cylinder. |
| Flow Rate |
0 - 25 L/min (Liters per Minute) |
Measured by the flowmeter tube for accurate gas delivery. |
| Safety |
External Safety Relief Valve |
Protects the high-pressure side of the regulator. |
| Flowmeter |
Polycarbonate Outer Cover |
Transparent cover allows for 360circ reading and protects the flow tube. |
Why the Heater Voltage Matters
The primary function of the heater remains the same: to prevent the regulator from freezing up due to the Joule-Thomson effect (the extreme cooling of gas during rapid expansion).
The 110V vs. 220V distinction is crucial for electrical safety and function:
-
Usage: You must ensure the regulator's specified voltage (110V in this case) matches the voltage of the power outlet you plug the heater into.
-
Mismatches:
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Plugging a 110V heater into a 220V outlet will cause the heater to overheat and fail almost instantly, potentially creating a fire hazard.
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Plugging a 220V heater into a 110V outlet will result in the heater running at only a quarter of its intended power, rendering it ineffective at preventing $CO_2$ freeze-up.
In summary, the PRIMA 838CR-H 110V is the version specifically built for environments using the standard 110-120V power supply for its essential anti-freeze heating element.
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