Specifications

METTLER TOLEDO Weigh Module Systems Handbook
(12/99)14-36
2.10 Module assembly shall withstand force equal to 100% of the rated
capacity in any horizontal or vertical plane without mechanical
failure.
3 Material and Finish Specification
3.1 Load cells shall be made of E4340 alloy tool steel and load pins
shall be made of hardened 17-4ph stainless steel.
3.2 Top and bottom mounting plates shall be abrasive blasted to 1.5 to
2.5 mils profile per SSPC-SP10 (Near White Blast).
3.3 Mounting plates shall be painted with Carboline 890 high-build epoxy
enamel. Coating must be cured to 3-6 mils DFT.
3.4 Coating must meet USDA regulations for incidental food contact.
3.5 Coating shall be lead and chromate free and cannot contain any
substance defined as carcinogenic by the U.S. EPA.
3.6 Coating must be suitable for salt solution immersion.
3.7 Coating must be chemical resistant per ASTM D3912 (Splash,
Spillage, and Fumes).
4 Load Cell Specifications
4.1 All load cells shall meet or exceed the National Institute of Standards
and Technology (NIST) Handbook 44 for Class IIIL weighing devices
and shall be certified by the National Type Evaluation Program
(NTEP) for 10,000 division Class IIIL accuracy.
4.2 Load cells shall have the following individual characteristics:
4.2.1 Rated Capacity (R.C.): ____________
4.2.2 Rated Output: ____________
4.2.3 Zero Balance: ____________
4.2.4 Combined Error Due To
Non-Linearity & Hysteresis: ____________
4.2.5 Non-Repeatability: ____________
4.2.6 Temperature Compensation: ____________
4.2.7 Terminal Resistance
Input: ____________
Signal: ____________
4.2.8 Excitation Voltage: ____________
4.2.9 Insulation Resistance: ____________
4.2.10 Maximum Loads
Safe Overload: 150% of R.C.
Ultimate Overload: 300% of R.C.
Safe Side Load: 100% of R.C.
4.3 Each load cell shall have an environmentally sealed strain gauge
cavity.
4.4 Each load cell shall have an integral conduit fitting on the cable
entrance into the load cell for enhanced moisture protection.
4.5 Each load cell shall have a data plate affixed to the load cell which
clearly shows:
4.5.1 Manufacturer
4.5.2 Capacity
4.5.3 Part Number
4.5.4 Serial Number
4.5.5 Class Number
4.5.6 NTEP Certificate of Conformance Number
4.5.7 Maximum Divisions (Nmax)
4.5.8 Load Cell Vmin
4.6 Load cells shall be mounted to the base plate with high strength
grade 5 bolts minimum.