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Phone: +86 16626708626Description
Key Technical Specifications
| Parameter | Specification |
| Supply Voltage | 18 to 30 V DC (2.5 W max power consumption) |
| Input Ranges (Bridge) | Field configurable from ±10 mV full scale up to ±200 mV full scale |
| Excitation Voltage | Switch-selectable 1 to 10 V DC regulated bridge excitation supply |
| Output Ranges | Field selectable: 0–5 V, 0–10 V, 0–1 mA, 0–20 mA, 4–20 mA |
| Isolation Architecture | 1800 V AC three-way isolation (Input / Output / Power) |
| Accuracy / Linearity | ±0.1% of full scale span |
| Thermal Drift | ±0.01% of span per °C |
| Mounting Style | 35 mm DIN rail mount (ultra-slim housing) |
| Operating Temperature | 0 to +60°C |
| Configuration Controls | Side-accessible DIP switches with front zero and span potentiometers |
Product Introduction & Supply Chain Strategy
This product is a Brand New Surplus unit. It is not used, not pulled from a decommissioned plant, and not refurbished. All modules undergo rigorous quality verification to ensure OEM-level reliability. The Eurotherm G448-0002 Ultra SlimPak serves as a compact, 3-way isolated signal conditioner engineered to interface strain gauges, load cells, and millivolt pressure transducers directly with PLCs or DCS analog input cards.
Holding this module as New Surplus secures operational stability across weight, force, and pressure monitoring applications. Refurbished signal conditioning cards often carry aged operational amplifiers and degraded DIP switches that introduce calibration drift or signal ripple into sensitive analog control loops. An unstable strain gauge signal can miscalculate batching weights, leading to off-spec product runs or accidental vessel overfills. Sourcing verified New Surplus guarantees original component accuracy, stable excitation power, and immediate drop-in replacement without risking process quality on pre-owned electronics.
Installation & Configuration Guide
1.Pre-Installation (Prep & Safety):Disconnect 24V DC power line and observe ESD protection.
Isolate panel power using Lock-Out/Tag-Out (LOTO) protocols prior to entering the enclosure. Put on a grounded ESD wrist strap. Document existing terminal block wiring connections, excitation wire positions, and side-panel DIP switch settings with high-resolution photographs.
2.Removal:Release terminal connections and disengage DIN rail latch.
Unscrew and label all wiring connected to the screw terminals. Insert a small flathead screwdriver into the DIN rail release latch at the base of the SlimPak housing, pull downward, and lift the old module off the mounting rail.
3.Installation (Clone & Seat):Replicate DIP switch configuration and mount unit.
Set the SW1 and SW2 DIP switches on the new G448-0002 to match the input mV range, excitation voltage level, and output signal mode of the removed unit. Snap the new housing onto the 35 mm DIN rail and reconnect field wiring firmly to the terminal screws.
4.Power-On & Testing:Verify excitation voltage and calibrate zero/span.
Apply 18–30 V DC power and confirm the green power indicator illuminates. Measure the excitation voltage across the bridge sensor terminals with a calibrated DMM. Apply a known zero load, adjust the Zero potentiometer until the output reads 4.00 mA (or 0.00 V), then apply full-scale load and adjust the Span potentiometer to finalize loop calibration.
G448-0002
G448-0002
Firmware/Software Versions & Upgrade Notes
- Analog Processing Architecture: The G448-0002 is a fully analog signal conditioning transmitter that functions without microprocessor firmware or software programming.
- Hardware Revisions: Ensure side-panel DIP switch tables match your specific unit, as minor layout revisions on SW1 and SW2 exist across Eurotherm and Action Instruments manufacturing generations.
- Backward Compatibility: Fully compatible across the entire Eurotherm / Action Instruments Ultra SlimPak G448 footprint for 3-way isolated bridge conditioning applications.
- Configuration Warning: Never change DIP switch settings while power is applied to the module. Changing excitation voltage settings under load can cause transient voltage spikes that damage connected strain gauge bridges.
Frequently Asked Questions (FAQ)
Q: Is this Eurotherm G448-0002 module brand new?
A: Yes, this item is strictly New Surplus in its original factory packaging. It has never been deployed in a panel, used in temporary test rigs, or subjected to component-level circuit repairs.
Q: Why choose New Surplus over a cheaper refurbished signal conditioner?
A: Refurbished analog conditioners frequently suffer from dried electrolytic capacitors and worn multi-turn potentiometers, causing calibration drift when ambient cabinet temperatures rise. Buying New Surplus ensures factory-spec excitation stability, precise zero/span retention, and zero risk of hidden component wear.
Q: Is the Ultra SlimPak G448 series an obsolete line, and why should I stock spares?
A: While the series is a mature platform widely installed in legacy processing plants, direct factory availability can be subject to extended lead times. Storing 1–2 New Surplus units in site buffer stock prevents process downtime when a strain gauge loop fails.
Q: Can the -0002 supply power directly to my load cell?
A: Yes, the -0002 features an integrated, regulated excitation power supply (switch-selectable from 1 to 10 V DC) capable of driving standard 350 Ω strain gauge bridges directly without external power supplies.
Q: How does 3-way isolation benefit my control system?
A: Three-way isolation provides 1800 V AC optical isolation between the input sensor circuit, the process output signal, and the DC power supply. This eliminates ground loops, suppresses common-mode noise, and protects downstream PLC inputs from high-voltage field surges.
Q: What warranty applies to this New Surplus transmitter?
A: We provide a full 1-year replacement warranty on all New Surplus Eurotherm modules. If any hardware defect occurs under standard operating conditions within 12 months, we replace the unit immediately from our stock.
