| Model 420s - Specifications
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- Accommodates up to 5000 V Cable Voltage
- Extended Temperature Range
- Light Weight
- Small Size
- Encapsulated Shock Resistance
- Metal Encased
- Isolated Two-Wire Transmitters
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- Fast, Reliable Response
- Low Cost Industrial Monitor
- Current Overload Protection
- Never Requires Calibration
- Complete Electrical Isolation
- Single Supply Voltage
- Supply Reversal Protection
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STANDARD CURRENT RANGES:
A.C. Amps, RMS
0-5
MAX WEIGHT: 3/4 OZ.
No Mounting Required!
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PERFORMANCE SPECIFICATION
With Optimum Load Resistance |
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Accuracy |
1/4 of 1%
of reading |
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| Repeatability |
0.25% Full Scale |
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| Response Time |
150 Milliseconds Maximum |
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| Temperature Range |
-25 deg. C to 85
deg. C |
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| Temperature Coefficient |
0.04% F.S./ deg. C |
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| Conductor Cable Voltage |
5000
Volts (Insulated Cable) |
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| Supply Voltage |
5 to 40 V.D.C. |
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| Signal Out |
4 to 20 mA |
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| Frequency Nominal |
50 / 60 Hz |
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| CONNECTION SPECIFICATION |
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| Conductor Cable Size |
Up To 0.25"dia |
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| Wire Range - Top Terminal |
14 to 22 AWG |
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| Dielectric Withstand |
16 KV / mm |
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CHARACTERISTIC CURVE
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OPTIMUM LOAD RESISTANCE
The optimum load resistance
is actually the sum of the line resistance, receiver resistances
and added external load resistance. However, in many applications,
the line resistance and receiver resistances are negligible
in comparison to the added external load resistance. The
following equation may apply:
| RL = ( VS
- 5 ) X 40 Where: |
RL = Load Resistance
in Ohms.
VS = Supply Voltage in Volts D.C.
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| Manufacturer maintains
right to change specifications without notice; prices as of January
1, 2001. |
