Rice Lake Washdown - Manual (Page 7)

Introduction 3
1.2 Model Designations
The model identification plate is located on the side of the frame next to the slide-out junction box tray. Include
both model number and serial number when ordering replacement parts.
The following model designations are used to describe the different scale versions:
• HP — Mild steel, high precision, NTEP-certified as “legal-for-trade” and FM-approved load cells.
• HP-H — 20K- and 30K-lb capacity HP models.
• SS — Non-washdown stainless steel, NTEP-certified model, for dry chemical and corrosive environments.
• HE — Washdown stainless steel, external mounted, NTEP-certified model with hermetically-sealed load
cells and NEMA 4X J-box for hostile environments.
1.3 Operating Requirements
Electrical Grounding
For systems where the scale is connected to a 115 VAC circuit, the indicator must be directly connected to an earth
ground with a ground interface cable of no more than 3
 resistance throughout its length.
Load Cell Excitation
Rated Excitation: 10 VDC, Maximum Excitation: 15 VDC
Grade Level Requirements
The supporting surface for the four feet of the scale must be level within
1
/
4
in. of horizontal.
Safe Static Overloading Capacity
Maximum: 150% of scale capacity
Nominal Scale Height
2K–10K lb (1000–5000 Kg) models: 3.5 in (89 mm)
20K lb (10000 Kg) models: 4.0 in (102 mm)
30K lb (15000 Kg) models: 5.0 in (127 mm)