LRA25 Datasheet, PDF (1/2 Pages) TOCOSAMERICA, INC. – 25mm Diameter, Single-Turn,Wirewound Industrial Panel Controls

LRA25 Series
TOCOS®
PANEL CONTROLS
25mm Diameter, Single-Turn, Wirewound Industrial Panel Controls
LRA25
Features
Ⅲ 25mm diameter, single-turn industrial panel controls Ⅲ Wirewound element Ⅲ High linearity, ؓ0.5% max.
Ⅲ Single unit, single shaft Ⅲ Linear taper Ⅲ ؓ5% standard total resistance tolerance Ⅲ Metal shaft and bushing
Ⅲ Wide operating temperature of ؁10؇C to ؀100؇C Ⅲ Panel mounting style only Ⅲ Right angle ear-lug terminals
Ⅲ 6mm diameter shafts in slot, flat or round end styles Ⅲ Standard 20mm shaft length
Specifications
Electrical
Standard Resistance Range . . . . . . . . . . . . . 500Ω to 20kΩ
Resistance Tolerance . . . . . . . . . . . . . . . . . . ؓ5% standard
(ؓ2% or ؓ1% special order )
End Resistance . . . . . . . . . . . . . . . . . . . . . . . . . . 0.2% max.
Resistance Taper . . . . . . . . . . . . . . . . . . . . . . . . . . B = linear
Independent Linearity . . . . . . . . . . . . . . . . . . . ؓ0.5% max.
Power Rating . . . . . . . . . . . . . . . . . . . . . .1.5 watts at ؀40؇C
Insulation Resistance . . . . . . .100MΩ minimum at 500VDC
Dielectric Strength . . . . . . . . . . . . . . . . . . 500VAC, 1 minute
Theoretical Resolution
Resistance ( Ω )
500
1,000
2,000
Resolution ( % )
0.27
0.21
0.17
Resistance ( Ω )
5,000
10,000
20,000
Resolution ( % )
0.12
0.08
0.09
Mechanical
Mechanical Travel . . . . . . . . . . . . . . . . . . . . . . . . . . 300؇ؓ5؇
Shaft Torque . . . . . 70.2 to 306 gf • cm (0.973 to 4.242 oz • in)
Stop Strength . . . . . . . . . . . . 10.2 kgf • cm (141.4 oz • in) max.
Mounting Nut Torque . . . . . . 15 kgf • cm (207.94 oz • in) max.
Solderability . . . . . . . . . . . . . . . . . . . . . . . 235؇C, 3 seconds
Marking . . . . . . . . . . Taper, resistance, resistance tolerance,
terminal identification, date code
Environmental
Temperature Range . . . . . . . . . . . . . . . . . ؁10؇C to ؀100؇C
Temperature Characteristics . . . . . . . . . . .؀85؇C, 5 hours
without load
∆T/R ⁾ؓ5%
Low Temperature Exposure . . .؁10؇C, 1 hour without load
∆T/R ⁾ؓ3%
Load Life . . . . . . . . . . . . ؀40؇C, 1,000 hours with rated load
∆T/R ⁾ؓ3%
Moisture and Load Life . . . . . . . . . . . .؀40؇C, 90-95%RH,
500 hours with 1/10 rated load
∆T/R ⁾ؓ5%
Vibration . . . . . . . . . . . . . . . . . . .10-55Hz, 1.5mm amplitude,
2 directions, 2 hours each
∆T/R ⁾ؓ1%
Soldering Heat Resistance . . . . . . . . . . 350؇C, 3.5 seconds
∆T/R ⁾ؓ2%
Rotational Life . . . . . . . . . 15,000 cycles with 1/2 rated load
∆T/R ⁾ؓ3%
∆T/R = Total Resistance Change
TOCOS AMERICA, INC.
61
1177 East Tower Road, Schaumburg, IL 60173 Tel: [phone] Fax: [phone] E-mail: [e-mail] www.tocos.com