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Q438 Input Signal Conditioner
Brand: EurothermThe Q438 is a DIN rail mount, potentiometer input signal conditioner with 1,800 Vdc isolation between DC power and the input/ output circuitry.
The input provides a constant voltage and is designed to accept any three-wire potentiometer from 100 to 100 KiloOhms.
The field configurable output is switch selectable providing a 0 to 5 V, 0 to 10 V, 0 to 1 mA, 0 to 20 mA or 4-20 mA DC signal.
Wide ranging, precision zero and span pots, used in conjunction with DIP switches, allow 80% adjustablity of offset and gain to transmit a full scale output from any 20% portion of the potentiometer input.
Features- Accepts potentiometers from 100 to 100 KiloOhms
- Wide ranging zero and span
- ASIC technology
- High density DIN rail mounting
- Flexible DC power supply 9 to 30 Vdc
- SnapLoc plug-in terminals
Specifications
Brand
Accuracy
- ± 0.1 %, Max.
Approvals & Certifications
- CSA C22.2 No. 0-M91 & 142-M1987 (File No. LR42272-84)
- UL (C,US)
- UL 508 (File No. E99775)
Consumption
- Power Consumption: 1.5 W Typical
- Power Consumption: 2.5 W, Max.
Display
- Green LED
Electrical Connectors
- Plug-In Terminal
Electrical Contacts
- Normally Closed
Electrical Rating
- 0-1 mA at 7.5 V, Max.
- 0-20 mA at 12 V, Max.
Excitation Voltage
- Potentiometer Input: 500 mV, 5 mA - Max.
Humidity
- Operating: 15 to 95 % Non-Condensing at 45° C (113° F)
- Soak: 90 % Non-Condensing for 24 Hours at 65° C (149° F)
Hysteresis
- ± 0.1 %, Max.
Input
- 0 to 100 %
- Potentiometer
Input Impedance
- Output Current (Source Impedance): > 100 kiloohms
- Output Voltage (Source Impedance): 1 megaohms
Isolation
- 1,800 Vdc between Line Power & Input, Output
Linearity
- ± 0.1 %, Max.
Mounting
- DIN Rail Mounting
Operating Temperature
- 0° to 55° C (32° to 131° F)
Output
- 0-10 V
- 0-20 mA
- Voltage Drive: 10 mA - Max.
Power Supply
- Universal DC: 9-30 Vdc
Resistance
- Potentiometer Input (End-to-End): 100 ohms to 100 kiloohms
Response Time
- 10 to 90 %: < 200 milliseconds, Typical
Span & Zero Adjustments
- Potentiometer Input (Zero Turn-Up, Span Turn-Down): 80 % of Full Scale Input
Stability
- < ± 0.05 %/°C, Max.
Storage Temperature
- -25° to 70° C (-13° to 158° F)
Switch Type
- DIP Switches
