DISCONTINUED - 3-1/2 Digit (Pt100) RTD Meters, 1/8 DIN3-1/2 Digit (Pt100) RTD Meters, 1/8 DIN
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- Platinum 100 O RTD Input
- 1 mA Excitation Current
- 2-, 3- or 4-Wire Connection
- -200 to 820°C in 1°C Steps (-M)
- -199.9 to 199.9°C in 0.1°C Steps (-R)
- °C or °F, Jumper-Selectable
- Platinum Curve Linearization
- 120 dB CMR, 70 dB NMR
- 1 or 10 mV/deg Linearized Recorder Output
- Bright, 14 mm (0.56") LED Display
- Display Hold and Test
- 115/230 Vac Power
- EMI/RFI Filter for AC Power
- Screw-Terminal Barrier Strip
- Short 104 mm (4.1") Deep ¹/8 DIN Case Options
- Isolated 9 to 32 Vdc Power or 26 to 56 Vdc Power
- NEMA 4 (IP65) Splash-Proof Lens Cover
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This product is no longer available. Please see HGST as a possible alternative or contact our Engineering department for a viable replacement.
The DP302-M and -R are low-cost 3-1/2 digit (±1999 count) temperature indicators for use with platinum 100 O RTD’s with alpha of 0.00385. They are complete with 1 mA sensor excitation, sensor-break detection, and platinum curve linearization. Resolution is 1° (-M) or 0.1° (-R). Readout can be in °C or °F, as selected by push-on jumpers. The electrical connection can be by 2-, 3-, or 4-wires. High accuracy is provided by positive current feedback and matched, graded components.
Mechanical features include a bright 14 mm (0.56") display, a screw-terminal barrier strip for signal and power, and a compact 1/8 DIN case that requires less than 104 mm (4.1") behind the panel. Electrical features include jumper selection of °C or °F, a linearized recorder output of 1 or 10 mV per degree, and 1 mA current excitation. The current source is tied to the reference of the A/D converter for true ratiometric operation and immunity to changes in line voltage.
Options are isolated 9 to 32 Vdc or 26 to 56 Vdc power, a PCB edge connector for display control and output of 4.7 Vdc and -4.7 Vdc power, and a splash-proof lens cover which meets NEMA 4 (IP65) requirements.