The ZX90 Series of Decade Resistance Boxes comprise of 10 instruments to cover a resistance range of up to 1,111,111Ω with instruments available in 4, 5, 6 and 7 Decades. Whilst they are low cost these instruments are of high quality and feature precision low contact resistance switches. The resistive elements are made of enamelled manganin wire which is non-inductively wound onto high quality formers. Each resistive element is heat treated and undergoes a controlled ageing process to produce the very highest stability and to achieve low temperature coefficient. The instruments are housed in an attractive metal case which is both robust and dust proof.
ZX series of 6 decade boxes are very high accuracy and stable six-dial instruments. They are designed for accurate and reliable applications in laboratories or onsite use as resistance thermometer simulation. There are 6 models in the series with a maximum resistance of 111,111,100 Ω.
FEATURE
High accuracy and stability;
Low temperature coefficient;
Fully sealed precision switch, no need for cleaning;
Non inductive resistor.
SPECIFICATION
Model No
No. of Decades
Accuracy (%)
Total Resistance(Ω)
Resolution (Ω)
Nominal Power (w)
Dimension (mm)
Weight (kg)
ZX90
4
0.1
0.01 - 111.10
0.01
0.1
200 x 95 x 94
0.85
ZX91
4
0.1
0 - 11110
1
0.1
200 x 95 x 94
0.85
ZX92
5
0.1
0 - 1111.10
0.1
0.1
242 x 95 x 94
1
ZX93
5
0.1
0 - 11111.0
0.01
0.1
242 x 95 x 94
1
ZX94
5
0.1
0 - 111110
1
0.1
242 x 95 x 94
1.1
ZX95
6
0.1
0 - 11111.10
0.01
0.1
284 x 95 x 94
1.15
ZX96
6
0.1
0 - 111111.0
0.1
0.1
284 x 95 x 94
1.25
ZX97
6
0.1
0 - 1111110
1
0.1
284 x 95 x 94
1.25
ZX98
7
0.1
0 - 111111.10
0.01
0.1
327 x 95 x 94
1.35
ZX99
7
0.1
0 - 1111111.0
0.1
0.1
327 x 95 x 94
1.35
Accuracy in Percent (%)
Model
x 100k Ω
x 10k Ω
x 1k Ω
x 100 Ω
x 10 Ω
x 1 Ω
x 0.1 Ω
x 0.01 Ω
Residual Resistance
ZX90
-
-
-
-
±0.1
±0.5
±2
±5
8 ± 2.5mΩ
ZX91
-
-
±0.1
±0.1%
±0.1
±0.5
-
-
10 ± 5mΩ
ZX92
-
-
-
±0.1%
±0.1
±0.5
±2
±5
10 ± 2.5mΩ
ZX93
-
-
±0.1
±0.1%
±0.1
±0.5
±2
-
10 ± 5mΩ
ZX94
-
±0.1
±0.1
±0.1%
±0.1
±0.5
-
-
10 ± 5mΩ
ZX95
-
-
±0.1
±0.1%
±0.1
±0.5
±2
±5
12 ± 2.5mΩ
ZX96
-
±0.1
±0.1
±0.1%
±0.1
±0.5
±2
-
12 ± 5mΩ
ZX97
±0.2
±0.1
±0.1
±0.1%
±0.1
±0.5
-
-
12 ± 5mΩ
ZX98
-
±0.1%
±0.1
±0.1%
±0.1
±0.5
±2
±5
14 ± 2.5mΩ
ZX99
±0.2
±0.1%
±0.1
±0.1%
±0.1
±0.5
±2
-
12 ± 5mΩ
Notes:
Above listed accuracies are under reference conditions: ambient temperature 20℃±1℃, Relative humidity 40% - 60%
Standard operation conditions: ambient temperature 20℃±10℃, relative humidity 25% - 75%;
