Fill-Rite TN740AN1CAA1LAI 23-38 LPM 4-Digit Mechanical Fuel Transfer Meter, Liters (NOT FOR FLUID RESALE)
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Features
- 4-Digit Mechanical Register: A 4-digit register counts each batch and resets by knob, while a separate totalizer keeps the lifetime count. It is all mechanical, so there are no batteries to change on a lube truck or in a shop.
- Made for Gear and Motor Oil: Fill-Rite lists these meters for gear oils and motor oils, and its manual places the TN740 and TN760 in hydraulic and lube oil service. Each one is calibrated at the factory for a set viscosity range.
- High-Pressure Housing: An anodized aluminum case around a resin metering chamber takes up to 1,000 PSI on the TN740 and 400 PSI on the TN760, which suits pressurized oil lines and lube truck reels.
- Plus or Minus 2% Accuracy: Fill-Rite lists ±2% accuracy with 0.25% repeatability. The calibration screw covers about ±3% to make up for wear, and Fill-Rite suggests rechecking the meter once it is installed.
- Female NPT In-Line Ports: The meter sits in the line on female NPT ports, 1" on the TN740 and 1-1/2" on the TN760. Flow can run left to right, right to left or upward, and the register can face up or out.
- Wide Temperature Range: Fill-Rite rates the TN700 meters from -15 to 180°F (-26 to 82°C). Above 120°F the pressure rating comes down, so check with us before running hot oil near the limit.
Description & Fitment
The TN740AN1CAA1LAI is the liter-reading TN740, Fill-Rite's 1,000 PSI meter for gear and motor oil on 1" female NPT ports. Its spec table lists 2 to 38 LPM; the TN manual gives 4 to 40 LPM for oils of 125 to 5,000 cSt and 1.5 to 15 LPM for heavier ones. The register counts in liters, with a reset knob and lifetime totalizer.
Fitment & Compatibility
Check your setup: a 1" NPT oil line rated up to 1,000 PSI. Gallon version: TN740AN1CAA1TAI. Larger 1-1/2" ports at 400 PSI: TN760AN1CAB1LAF (liters).
Not for: systems that need 3A sanitary equipment, which Fill-Rite's TN manual rules out, and any fluid outside its factory viscosity range; switching fluids can call for new gears and recalibration. Never reset the register while fluid is flowing.
About Fill-Rite
Fill-Rite is a Gorman-Rupp company that designs and builds transfer equipment for fuel, oil and chemicals: electric and hand-operated transfer pumps, plus the meters, nozzles, hose and filters that go with them. Its sites are in Fort Wayne, Indiana and Lenexa, Kansas.
Its transfer pumps are built around cast-iron rotary vane bodies, and Fill-Rite stands behind them with a tiered warranty that runs for the life of the pump castings, 5 years on the motor and 2 years on wear parts.
Buying Fill-Rite from Prestige Truck. Fill-Rite asks for proof of purchase with any warranty claim, so keep your Prestige Truck order receipt with your records.
Frequently Asked Questions
Does this TN740 count in liters or gallons?
Liters. The TN740AN1CAA1TAI is the same meter with a gallon register.
What flow range should I expect?
It depends on the oil. Fill-Rite's manual rates the TN740 at 4 to 40 LPM for 125 to 5,000 cSt oils and 1.5 to 15 LPM for 5 to 50,000 cSt; its spec table lists 2 to 38 LPM.
Can I use a TN740 or TN760 on diesel?
They are calibrated for oils. Fill-Rite lists gear and motor oils, and its manual says a different viscosity needs different gears and recalibration. For diesel, the TN860 is the matching TN meter.
Should I add a strainer?
Yes. Fill-Rite's manual calls for a strainer on the inlet side to catch weld slag and pipe scale, plus a thermal relief valve on any section where closed valves on both sides could lock the meter in.
How often should it be recalibrated?
Fill-Rite gives no fixed interval; once a year is common, anywhere from 6 to 36 months can be right depending on flow, volume and the oil. Keep a record of each check.
Can I reset it while oil is flowing?
No. Fill-Rite warns that resetting during flow strips gears in the register and disables the meter. Stop the flow first, then reset.
Installation
Here's the short version. Follow Fill-Rite's manual (below) for the full procedure, wiring and safety steps.
- Flush the piping first, keep the port caps on until you are ready, and check that no packing material is inside the meter.
- Fit a strainer on the inlet side, plus a thermal relief valve on any section where closed valves on both sides could lock the meter in; Fill-Rite also suggests inlet, outlet and bypass/calibration valves.
- Orient the meter so it stays full: flow left to right, right to left or upward, never against the arrow on the case; the register can face up or out.
- Put pipe compound on the male threads (no PTFE tape), and secure the meter to a mounting support so the piping carries no stress.
- Fill slowly: throttle the inlet valve, open the outlet, start the pump and open the inlet gradually; do not run at full rate until the air is purged.
- Recheck calibration after installing: three tests against a prover, master meter or scale holding at least 60 seconds of flow, then trim with the calibration screw (about ±3%).
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Specifications
| Brand | Fill-Rite |
|---|---|
| Part Number | TN740AN1CAA1LAI |
| Series | TN700 (TN740 / TN760) |
| Metering | Nutating disc, positive displacement |
| Register | 4-digit mechanical, resettable, with totalizer |
| Power | None (mechanical) |
| Accuracy | ±2% |
| Repeatability | 0.25% |
| Operating temperature | -15 to 180°F (-26 to 82°C) |
| Compatible fluids | Gear oils, motor oils |
| Ports | Female NPT |
| Construction | Anodized aluminum case, resin metering chamber |
| Pulse output | No |
| Display | 4-digit resettable register + non-resettable totalizer |
| Units | Liters |
| Flow range | 2 to 38 LPM (spec table); 4 to 40 LPM at 125-5,000 cSt, 1.5 to 15 LPM at 5-50,000 cSt (manual) |
| Max pressure | 1,000 PSI |
| Inlet | 1" female NPT |
| Outlet | 1" female NPT |
| Included | Meter, reset knob |
| Dimensions | 5.5" H x 9" W x 7.5" D |
| Weight | 7.9 lb |
| Shipping weight | 9 lb |
| Warranty | 2 years (Fill-Rite TN Series meter term) |
| UPC | 089404100981 |
Warranty, shipping & returns
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Warranty
Fill-Rite's limited warranty policy lists the TN Series meters under a 2-year term: every meter component is warranted against defects in material and workmanship for 2 years.- Coverage runs from the date of sale, or the delivery date if that is later, and only the original purchaser is covered; it does not transfer to a later owner.
- It applies to products bought from Fill-Rite or a seller Fill-Rite authorizes in the United States or Canada, and Fill-Rite needs proof of purchase with a claim. Without proof of purchase or delivery, Fill-Rite starts the clock at the date code on the product.
- Small items such as fasteners, washers, labels, nameplates, rivets, emblems, packaging, thread tape, wire nuts and paperwork are not covered.
- It does not cover misuse, neglect, accident, negligence, improper installation or maintenance, or repairs done by anyone other than Fill-Rite or its authorized representative.
- Fill-Rite's remedy is a replacement, or a refund of the price paid when a replacement or repair is not practical. Its liability is capped at the purchase price and it excludes incidental and consequential damages where the law allows. Implied warranties are limited to the length of this warranty.
- Please do not send the product back on your own: if Fill-Rite asks for a return, it issues a return number and pays the freight.
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Free shipping
Ships free to the lower 48 states, with no minimum order.- Order by 5 PM ET on a business day and it starts processing the same day.
- Most orders arrive within 1-5 business days.
- We email your tracking number as soon as it ships.
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Inspect on delivery
Check the aluminum case, the register glass and the reset knob for cracks, and leave the protective port caps on until the meter goes into the line. Check it as soon as it arrives.- Look for crushed ends, punctures or tears in the carton.
- If something looks wrong, take photos of the box and the parts (and if a driver asks you to sign, note the damage on the receipt).
- Open the box and check the parts against the parts list before you install.
- Email support@prestigetruck.com right away with your order number, a short note and photos. We send a replacement or a full refund at no cost to you.
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30-day returns
Return it within 30 days of delivery, unused, in the original packaging, with proof of purchase.- Email support@prestigetruck.com with your order number. We reply within 1-2 business days with instructions.
- Damaged, defective or wrong item: we send a prepaid label or arrange a pickup.
- Changed your mind: you pay return shipping. No restocking fee.
- Refunds go back to your original payment method within 7 business days of approval. See our returns policy.