Cropico RM8 Datasheet0 pages

RM8
WIDE RANGE, COMPACT & VERSATILE 8 DECADE
RESISTANCE BOX WITH DOUBLE POLE SWITCHING
Resistance Decades & Standards
RM8 SPECIFICATIONS
Terminals
2 binding posts will accept 4mm banana plugs and spade tags.
1 terminal for connection to panel/earth
Dimensions
254mm x 145mm x 80mm (W H D) approx
Mass
0.95 kg
Resistors
Power Rating: 1 watt per resistor
Lower decades (0.01 & 0.1 ohm) Manganin wire wound,
other decades metal film
Temperature coefficient: 10ppm/°C
Switches
Rotary 2 poles in parallel, contacts silver plated brass with
positive click mechanism. Insulation >50,000 Mega ohm
Residual Resistance
< 0.1 ohm
Test Voltage
1kV dc between terminals and panel
The model RM8 decade resistance box is designed to
compliment our range of resistance boxes, offering a very wide
range 0.01 ohm to 1 Mega ohm in a compact and versatile unit.
The low decade steps of 0.01 ohm enable very high resolution,
when simulating resistance values and the power rating is 1.0
watt per coil. The RM8 uses double pole switching to minimize
the effects of contact resistance. The lower value decades
(0.01 and 0.1 ohm) are manufactured from Manganin resistance
wire and the other decades from selected metal film resistors.
This offers good stability combined with excellent load and
temperature coefficients. Housed in a hardwood case with metal
panel the size is only 254 x 145 x 80mm and the connections are
with 4mm binding posts that will accept spade or banana plugs.
Decades Accuracy Maximum Current
10 x 100K½
10 x 10K½
10 x 1K½
10 x 100½
10 x 10½
10 x 1½
10 x 0.1½
10 x 0.01½
± 0.1%
± 0.1%
± 0.1%
± 0.1%
± 0.5%
± 1%
± 5%
± 10%
0.003A
0.01A
0.033A
0.1A
0.3A
1.0A
1.0A
1.0A
key feature RM8
8 decades n
Wide range 0.01 ohm to 1 Mega ohm n
Accuracy 0.1% n
Exceptional value for money n
Compact size n
Power rating 1W / coil n
Bracken Hill, South West Industrial Estate, Peterlee, County Durham, SR8 2SW United Kingdom
Tel: +44 (0) 191 586 3511 Fax: +44 (0) 191 586 0227 Email: sales@cropico.com Web: www.cropico.com