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Jewell Instruments
Jewell Instruments A906 Little Dipper Biaxial IPI
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A906 Little Dipper: ±12/30/50° biaxial; ±2.5 V or 0–5 V; temp ch. RFQ.
Download datasheet PDF
RFQ cart holds BOM lines only. Submit for engineering quote.
Key parameters
Measuring range
High-Gain ±12°; Standard ±30°; Wide-Angle ±50° (biaxial IPI)
Accuracy
Nonlinearity max 0.8% FS (HG), 1%/4% (Std half/full), 7% (WA); nonrepeatability 0.01–0.02°
Output
±2.5 VDC bipolar or 0–5 VDC unipolar; channels X-tilt, Y-tilt, Temperature
Supply
+8 to +24 VDC (bipolar); +10.5 to +26.5 VDC (0–5 V); 7 mA typ, reverse-polarity protected
Housing
Cylindrical ABS housing; Delrin guide fins
Protection
Submersible to 72 psi (≈5 bar); waterproof ABS housing
Fits biaxial in-place inclinometer (IPI) strings where you need a Jewell A906 Little Dipper—High-Gain ±12°, Standard ±30°, or Wide-Angle ±50° with ±2.5 V or 0–5 V outputs plus a temperature channel.
Key advantages
- Ranges — HG ±12°; Std ±30°; WA ±50°
- Resolution — <0.005° / <0.01° / <0.02° (HG/Std/WA at 1 mV)
- Accuracy — Nonlinearity max 0.8% FS (HG) to 7% (WA)
- Outputs — ±2.5 V bipolar or 0–5 V; X, Y, Temperature
- Platform — A906 Little Dipper biaxial IPI
Typical applications
- Geotechnical IPI strings.
- Dam / embankment tilt arrays.
- Structural biaxial monitoring.
Selection guide
- HG / Std / WA
- Output polarity
- Cable length
Common mistakes
- WA nonlinearity ignored.
- Wrong gain for expected tilt.
- Temperature channel unused for correction.
When to RFQ / what to tell us
- Gain version, cable.
- Quantity, ship-to.
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Specs
| Spec | Value |
|---|---|
| SKU | 39618 |
| Brand | Jewell Instruments |
| Model | A906 Little Dipper |
| Product type | Tiltmeter |
| Measuring range | High-Gain ±12°; Standard ±30°; Wide-Angle ±50° (biaxial IPI) |
| Accuracy | Nonlinearity max 0.8% FS (HG), 1%/4% (Std half/full), 7% (WA); nonrepeatability 0.01–0.02° |
| Resolution | <0.005° / <0.01° / <0.02° (HG/Std/WA at 1 mV) |
| Output signal | ±2.5 VDC bipolar or 0–5 VDC unipolar; channels X-tilt, Y-tilt, Temperature |
Documents
FAQ
Q: Ranges? A: ±12°, ±30°, or ±50°.
Q: Outputs? A: ±2.5 V or 0–5 V plus temperature.
Q: What should I send for a quote? A: Gain/cable, quantity, ship-to.
Links
| Parameter | Value |
|---|---|
| Measuring range | High-Gain ±12°; Standard ±30°; Wide-Angle ±50° (biaxial IPI) |
| Accuracy | Nonlinearity max 0.8% FS (HG), 1%/4% (Std half/full), 7% (WA); nonrepeatability 0.01–0.02° |
| Output | ±2.5 VDC bipolar or 0–5 VDC unipolar; channels X-tilt, Y-tilt, Temperature |
| Supply | +8 to +24 VDC (bipolar); +10.5 to +26.5 VDC (0–5 V); 7 mA typ, reverse-polarity protected |
| Housing | Cylindrical ABS housing; Delrin guide fins |
| Protection | Submersible to 72 psi (≈5 bar); waterproof ABS housing |
| Ambient temperature | Operating/storage −25 to +70 °C |
| Mounting | Standard inclinometer casing, grouted/direct burial; vertical or horizontal borehole orientation |
| Sensor type | Biaxial electrolytic in-place inclinometer (Little Dipper / A906) |
| Resolution | <0.005° / <0.01° / <0.02° (HG/Std/WA at 1 mV) |
| Time Constant | 0.15 s; natural frequency 10 Hz |
| Cable | 6-conductor 24 AWG shielded PVC; 3 m standard |
| Weight | 0.35 kg (0.75 lb) |