Mettler Toledo LJ16 Spécifications télécharger pdf (Page 172)

METTLER TOLEDO Weigh Module Systems Handbook

(12/99)14-52

Value Line Weigh Modules

The portions of this specification that have been left blank ( __________ ) should be

filled with information about the specific application. Information for the blanks in

Section 1.1 can be found in Table 14-35. Information for the blanks in Sections 4.2.1 to

4.2.9 can be found in Table 14-36.

General Provisions

1.1

Provide a complete system consisting of ______ (qty) ______ lb

carbon steel weigh modules to convert a freestanding structure into a

scale.

1.2

Each module shall include load cell, compression-mount receiver

plate, and bottom mounting plate.

1.3

The system shall include a stainless steel NEMA 4X/IP65 summing

junction box.

1.4

Each weigh module shall be completely factory assembled.

Mechanical Specifications

2.1

The suspension system shall be comprised of shock absorbing

compression-mount receiver plates that are rigidly bolted to the load

cells. Compression load receivers shall consist of steel inner plates

covered by neoprene rubber.

2.2

Compression-mount receiver plates shall allow for minimal horizontal

movement at each module.

2.3

Each module shall be equipped with an adjustable load cell overload

stop bolt.

Material and Finish Specification

3.1

Load cells shall be made of hardened 17-4ph stainless steel.

3.2

The bottom mounting plates and all spacers shall be zinc-plated

1018 CR carbon steel.

Load Cell Specifications

4.1

All load cells shall meet or exceed the National Institute of Standards

and Technology (NIST) Handbook 44 for Class III weighing devices

and shall be certified by the National Type Evaluation Program

(NTEP) for 5,000 division Class III 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

Load cells shall be constructed of 17-4ph stainless steel and shall

have an environmentally protected strain gauge cavity.

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