YOKOGAWA 279301, Руководство пользователя

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IM 2793-01E
― 2 ―
3. SPECIFICATIONS
Resistance Range:
Dial Composition:
Resolution:
Accuracy:
0.100 to 1111.210 Ω
0.001 Ω × 10 + 0.01 Ω × 10 +
0.1 Ω × 11 + 1 Ω × 10 + 10 Ω × 10 +
100 Ω × 10
0.001 Ω
± (0.01% + 2 mΩ)
279301
Temperature Coefficient:
(At temperature 23 ± 2º C, humidity 45 to 75%)
Input Power: Max.0.1 W
More than 500 MΩ (at 500 VDC)
between panel and circuit
0.25 W per step
Within 1 W for overall instrument
Temperature Raise: Less than 30 ºC
at maximum power rating.
Max. Allowable Power:
Max. Allowable Current:
Insulation Resistance:
1000 VAC 1 minute
between panel and circuit
Approx. 116 × 497 × 140 mm
Approx. 4.8 kg
User's Manual 1 copy
Dielectric Strength:
Dimensions:
Weight:
Accessory:
(×10
-6
/º C)
(×10
-6
/ºC
2
)
α
β
20
T.C.
Dial 100 Ω
step
10 Ω
step
1 Ω
step
0.1 Ω
step
−5 to +10
−0.3 to −0.7
−5 to+20
Approx. *
20 to 90 Approx. *
90 to 900
Rt = R {1 + α (t − 20) + β (t − 20) }
20 20
2
20
Rt : Resistance Value at t ºC
R : Resistance Value at 20 ºC
* Inculuding T.C. of wiring and switches resistance
(60 μΩ /º C)
100 Ω step
10 Ω step
1 Ω step
0.1 Ω step
50 mA
150 mA
500 mA
1.5 A
Resistance Range:
Dial Composition:
Accuracy:
0 to 111.1110 MΩ
100 Ω × 10 + 1 kΩ × 10 +
10 kΩ × 10 + 100 kΩ × 10 +
1 MΩ × 10 + 10 MΩ × 10
279303
Temperature Coefficient:
(At temperature 23 ± 2ºC,
humidity below 75%,
incuding residual resistance approx. 0.05
Ω )
More than 10
11
Ω (at 1000 VDC)
between panel and circuit
Max. Allowable Input (Current ∙ Voltage) :
Insulation Resistance:
2500 VAC 1 minute
between panel and circuit
Approx. 116 × 497 × 140 mm
Approx. 4.8 kg
User's Manual 1 copy
Dielectric Strength:
Dimensions:
Weight:
Accessory:
100 Ω, 1 kΩ, 10 kΩ, and 100 kΩ step
± (0.05% + 0.05 Ω)
1 MΩ and 10 MΩ step
± 0.2%
10 kΩ, 100 kΩ , 1 M Ω, and 10 MΩ step
100 Ω and 1 kΩ step
Rt = R {1 + α (t − 20) + β (t − 20) }
20 20
2
α = (− 2 to +20) × 10
-6
/ºC
β = − (0.3 to 0.7) × 10
-6
/ºC
20
2
±30 × 10
-6
/ºC
20
Where Rt : Resistance Value at t ºC
R : Resistance Value at 20 ºC
Variation of resistance with temperature change is
shown in the following equation:
100 Ω step
1 kΩ step
10 kΩ step
100 kΩ step
1 MΩ step
10 MΩ step
100 mA
30 mA
10 mA
3 mA
2000 V
2000 V
2000 V
(100 kΩ to 600 kΩ )
(700 kΩ to 1 M Ω)