Crompton 007系列和239系列模拟电表继电器 Analogue Meter Relays
1. Crompton 239系列 Meter Relays
239-302A 2 Output Relays, 2 Set Points, High/Low Control
239-301A 1 Output Relay, 1 Set Point, High Control Only
239-307A 1 Output Relay, 1 Set Point, Low Control Only
239-300A 1 Output Relay, 2 Set Points, High/Low Control
239-30TA 2 Output Relays, 2 Set Points, High/Low Control, Thermocouple Applications
Fitted with Cold Junction Compensation Circuitry
239-30RA 2 Output Relays, 2 Set Points as 239-30TA but for RTD Applications
239-304A 2 Output Relays, 2 Set Points, High Relay Downscale Energized,
Low Relay Upscale Energized
239-305A 2 Output Relays, 2 Set Points, both Relays Downscale Energized
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One relay, two setpoints
Upscale de-energised, down scale energised.
Typical applications: Liquid level control,
load shedding & power factor correction. 239-300
One relay, one set point
Upscale energised, downscale de-energised.
Typical application: High alarm. 239-301
Two relays, two set points
Mid band de-energised, outside band energised.
Typical applications: High and Low alarm, High alarm plus shut down. 239-302
Two relays, two setpoints
Both upscale energised, downscale de-energised
Typical application: High alarm plus shutdown. 239-303
Two relays, two setpoints
High and low midband energised,
outside band de-energised. No time delay.
Typical application: High alarm plus shutdown. 239-304
Two relays, two set points
Both upscale de-energised,downscale energised.
Typical application: Frequency monitoring. 239-305
One relay, one set point
Upscale de-energised, downscale energised.
Typical application: Low alarm. 239-307
Two relays, two set points
Midband de-energised, outside band energised.
Operates from from 2, 3 or 4 wire resistance temperature detector (RTD).
Typical application: Temperature indication / control. 239-30R
Two relays, two set points
Midband de-energised, outside band energised.
Operates from thermocouple input. Cold junction compensation and
thermocouple break protection are standard features.
Typical application: Temperature indication / control. 239-30T
$ Applications应用
Voltage monitoring/ control current monitoring 电压监测/控制电流监测
Overload alarm 过载报警
Battery monitoring/charging 电池监测/充电
Temperature indication 温度指示
Temperature control 温度控制
Load shedding 负载脱落
Power factor correction 功率因数校正
Frequency monitoring 频率监控
Level control 液位控制
2. Crompton 007系列 Meter Relays
007-300A One relay, two setpoints Upscale de-energized, down scale energized
007-301A One relay, one setpoint Upscale energized, downscale de-energized
007-302A Two relays, two setpoints Mid band de-energized, outside band energized
007-303A Two relays, two setpoints Both upscale energized, downscale de-energized
007-304A Two relays, two setpoints High and low midband energized, outside band de-energized – no time delay
007-305A Two relays, two setpoints Both upscale de-energized, downscale energized
007-307A One relay, one setpoint Upscale de-energized, downscale energized
007-30RA Two relays, two setpoints Midband de-energized, outside band energized – operates
from 2, 3 or 4 wire RTD
007-30TA Two relays, two setpoints Midband de-energized, outside band energized – operates from
thermocouple input
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