Overview
The 401-400 provides the most complete system testing package available for monitoring two/wire, on/off level transmitters. The receiver is based on reliable technology that’s performed successfully at major plants for decades. The two-wire design allows for continuous self-checking loop diagnostics, which check the twister pair for open and short circuits.
Two wire technology
Continuous level simulation
Proven technology
Verify ™ loop diagnostics
Specs
Power Requirement:
95-145 Vac, 50/60 Hz, 5 watts
215-265 Vac, 50/60 Hz, 5 watts maximum
Power Consumption
Less than 7 watts
Surge Protection
10 Amp Standard
Outputs:
Alarm: DPDT relay contact
Fault: DPDT relay contact
Contact Rating:
120 Vac: 5A non-inductive / 3A inductive
230 Vac: 5A non-inductive / 2A inductive
Min Rating 100mA/ 12 VDC
LED Indication:
Green: Normal when lit (14-20 mA)
Alarm when out (4-10 mA)
Yellow: Fault/Malfunction when lit.
Normal when out.
LEDs are visible through standard Nema 4X housing or optional viewport on explosion-proof housing.
AutoVerify Test Interval:
10 seconds (alarm inhibit 3 seconds)
AutoVerify Inputs
One magnetic key to manually certify entire system operation
Ambient Temperature:
-40°F to 145°F (-40°C to 60°C)
AutoVerify Alarm Latency:
4 seconds maximum (time from AutoVerify test to acknowledgement of a real alarm condition.)
Area Classification:
401-0400 Series receivers are designedfor Non-Hazardous installation.
Connections to hazardous location:
401-04XX-00X output is limited to 24 volts, current will supply one (1) 4-20 mA transmitter
401-04XX-01X output is Intrinsically Safe for Class I, II, III, Div. 1 & 2, Groups A through G.
Intrinsic Safety is provided by STAHL Barrier model 9001/01-280-100-10.
Housing:
Nema 1-4X, 5, and 12 (standard) Explosion-proof (optional)
Nema 1 General Purpose Explosion-proof for Class 1, Groups A, B, C, D, and Class II, Groups E, F, G, Division 1 or 2.
Nema 2 Drip Tight
Nema 3 Weather Resistant
Nema 4 Waterproof
Nema 5 Dust Tight
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