Oil Level Indicator — YZF Series
Magnetic pointer-type level indicator for transformer conservator tanks. A float inside the tank drives an external pointer through a magnetic coupling — no shaft penetration, no leakage path. Optional low-oil-level alarm contact for remote monitoring.
- YZF-100
- YZF-120
- YZF2-140
- YZF2-175
- YZF2-200
- YZF2-250
- YZS2-250 / 200 / 140
- YZF-100T
Float type (YZF) and telescopic rod type (YZS) both available. Alarm-contact (signal) variants are quoted on request.
Technical Data
Values below are taken from the manufacturing partner's published catalogue.
| Parameter | Value |
|---|---|
| Accuracy class | 2.5 |
| Protective class | IP55 |
| Ambient temperature | −30 °C to +50 °C |
| Relative humidity | ≤ 90 % at +25 °C |
| Contact capacity | AC 220 V 1 A · DC 220 V 0.3 A |
| Seal performance | No leakage or deformation at 0.3 MPa oil pressure |
| Factory standard | JB/T 10692-2007 |
| Remote transmission option | RS485 / 4–20 mA digital transmitter available |
Available models
| Type | Models | Dial Ø |
|---|---|---|
| Floating-ball pointer type | YZF-100 · YZF-120 · YZF2-140 · YZF2-175 · YZF2-200 · YZF2-250 | 100–250 mm |
| Telescopic rod type | YZS2-140 · YZS2-200 · YZS2-250 | 250 mm |
| Casing gauge | YZF-100T | 100 mm |
| Signal (alarm contact) versions | YZF M-140S / M-200S / M-250S · YZF16M / YZF21M series | 140–250 mm |
Mounting dimensions (mm)
| Type | ØP | α | H | D | d | Bolt holes | Øn × Φ |
|---|---|---|---|---|---|---|---|
| YZF2-250 | 250 | 270° | 170 | 156 | 130 | 6-Φ12 | Φ115 × 6 |
| YZF-250 | 250 | 270° | 170 | 195 | 170 | 6-Φ12 | Φ152 × 8 |
| YZF-200 | 200 | 270° | 155 | 195 | 170 | 6-Φ12 | Φ152 × 8 |
| YZF2-200 | 200 | 120° | 155 | 160 | 135 | 6-Φ12 | Φ115 × 5 |
| YZF3-200 | 200 | 270° | 156 | 156 | 130 | 6-Φ12 | Φ115 × 5 |
| YZF2-175 | 175 | 120° | 100 | 210 | 170 | 4-Φ18 | — |
| YZF2-140 | 140 | 120° | 85 | 140 | 116 | 4-Φ13 | Φ100 × 7 |
| YZF3-140 | 140 | 270° | 160 | 140 | 116 | 4-Φ13 | Φ100 × 7 |
| YZS2-250 | 250 | 270° | 160 | 156 | 130 | 4-Φ13 | Φ152 × 8 |
| YZF-120 | 120 | 120° | 26 | 120 | 108 | 4-Φ6 | Φ108 × 6 |
| YZF-100 | 100 | 120° | 25 | 100 | 88 | 3-Φ7 | Φ88 × 7 |
Dimensions reproduced from the factory catalogue. Check them against your tank flange before ordering — send a photo of the existing unit if you are unsure.
Compliance
Documents are matched to the models and the destination country on your order.
Test and conformity documents applicable to the models you buy are supplied as copies with your quotation and again with the shipping documents. Tell us the destination country and any standard you must satisfy when you enquire — we confirm what can be supplied before you commit.
Document availability is confirmed per model and destination before you order. See how we handle quality & compliance →
Frequently Asked
Will it fit our conservator tank?
Send us the old indicator's photos or the tank flange drawing — we match the mounting dimensions before quoting.
Can we get an alarm output to our SCADA?
Yes, low-level alarm contacts are available. Confirm the contact rating you need with your inquiry.
Replacing an old indicator?
Send photos of the old unit — we match and quote within 24 hours.