DIN Rail Mount Configurable Signal Conditioners

Description

The DRF series DIN rail signal conditioners are designed to accept a broad range of input signals, such as ac and dc voltage and current, frequency, temperature (thermocouple and RTD), and process transducers, and provide standard process outputs of either 4 to 20 mA, or 0 to 10 Vdc. The DRF series feature a modern housing design, that is easily mounted on standard 35 mm DIN rails. Connections are safely and securely made through pluggable screw terminal connectors, with input and output connections on the opposite sides of the module.

Functionality
The DRF series are designed to maximize functionality. The front door of the housing provides easy access to span and offset potentiometers which may be used to field adjust the input and output
signal range.

Isolation
The input, output and power circuits are isolated by 3500 volts of galvanic isolation. The isolation protects against potentially damaging voltages from passing through the signal conditioners into connected systems. The isolation also provides improved measurement accuracy by minimizing the effects of ground loops and electrical noise.

Outputs
Each DRF series signal conditioner is available with current and voltage output (only one may be used at a time). Available output types include 4 to 20 mA or 0 to 10 Vdc. Although pre-configured before shipping from the factory, the output may be changed through an internal jumper change.
Standard outputs are linear and proportional to the signal input. Thermocouple input modules feature special circuitry to linearize the output to the actual temperature rather than the non-linear signal produced by thermocouple sensors.

For Ordering details and technical information on specific models please see the Related Links section below.

SPECIFICATIONS
Common to all Models)
Power: 24 Vdc ±10%, 230 Vac ±10% 50/60 Hz, 115 Vac ±10% 50/60 Hz
Power Consumption: <3.8 VA
Output: 4 to 20 mA and 0 to 10 Vdc
Maximum Voltage Output: 11 Vdc approx.
Minimum Voltage Output: -1 Vdc approx.
Minimum Load Resistance (Voltage): =1 K Ω
Maximum Current Output: 22 mA approx.
Maximum Current Output: -1.5 mA approx.
Maximum Load Resistance (current): =400 Ω
Accuracy: <0.2% or <0.3% depending on model
Linearity: <0.1% or <0.2% depending on model
Thermal Drift: <150 ppm/°C or 250 ppm/°C typical depending on model
Response Time: 70 mS (Process and DC input models); 250 mS (Temperature and AC input models)

Isolation*:
Input to Output: 3500 Veff;
Power to Input: 3500 Veff;
Power to Output: 3500 Veff (for ac powered models), 1K Veff (for dc powered models)
*tested True RMS, 60 sec. leak <1 mA
Electrical Connections: Plug-in screw terminals
Protection: IP-30

MECHANICAL DIMENSIONS
Weight:
(DC Powered): 120 g (4.2 oz)
(AC Powered): 200 g (7 oz)

Dimensions:
(DC powered models):
110 H x 22.5 W x 93 mm D (4.3 x 0.9 x 3.7")
(AC powered models):
110 H x 37 W x 93 mm D (4.3 x 1.46 x 3.7")

Operating Temperature: 0 to 60°C (32 to 140°F)
Storage Temperature: -20 to 70°C (-4 to 158°F)

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