Product Description
The RDP Electrosense GT2500-1.25 is a precision miniature LVDT (Linear Variable Differential Transformer) gauging transducer designed for high-accuracy displacement and position measurement. Based on the GT2500 platform with a ±2.5mm (±0.1") measurement range, it employs precision linear bearings for optimized repeatability and uses a spring-return armature mechanism — ideal for applications where direct mechanical connection to the measured component is not possible. The "-1.25" suffix designates a 1.25m integral cable configuration (variant from the standard 2m), offering the same performance in a compact stainless steel rod-profile housing with infinite resolution and no electrical contact across the sensing element.
Technical Specifications
| Specification | Value |
|---|---|
| Brand | RDP Electrosense |
| Model / Part Number | GT2500-1.25 |
| Product Series | GT Precision LVDT Gauging Transducer |
| Sensor / Transducer Type | LVDT (Linear Variable Differential Transformer) |
| Measurement Range | ±2.5mm (±0.1") |
| Sensitivity (Nominal) | 375 mV/V |
| Linearity Error (Standard) | ±0.25% F.S. |
| Linearity Error (Optional) | ±0.1% F.S. |
| Repeatability | 0.00015 mm (0.000006") |
| Excitation / Supply (Acceptable) | 0.5V to 7V rms, 2kHz to 10kHz (sinusoidal) |
| Excitation / Supply (Calibrated) | 5V rms, 5kHz (sinusoidal) |
| Output Load | 100k Ohms minimum |
| Analog Output Type | AC Voltage (V/V ratiometric) |
| Operating Temperature Range | -40°C to +100°C (-40°F to +212°F) |
| Temperature Coefficient (Span) | ±0.01% F.S./°C (typical) |
| Body Length (L) | 58mm (2.26") |
| Armature Nominal Stroke (X) | 20.3mm (0.80") |
| No-Clamp Zone (B) | 18mm (0.71") |
| Body Diameter (D1) | 0.315" (8mm nominal) |
| Total Weight | 13g (0.4oz) |
| Spring Force at X (Nominal) | 1.1N (4.1oz) |
| Spring Rate | 2.6 N/cm (24.2 oz/inch) |
| Inward Over-Travel | 0.8mm (0.03") |
| Outward Over-Travel | 0.3mm (0.01") |
| Armature Return Type | Spring Return |
| Housing Material | Stainless Steel |
| Body Shape | Cylindrical (Rod Profile) |
| Bearing Type | Precision Linear Bearings |
| Resolution | Infinite (non-contact) |
| Electrical Termination | 1.25m Integral Cable (end/axial exit) |
| Cable Exit Style | End (Axial) Exit |
We warranty all items for 30 days from date of purchase.
