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Palmer Wahl DST620_660_Meter | Digi-Stem Dual Sensor RTD Thermometer with Transmitter | 4–20 mA
The DST620_660_Meter is the indicator for the Digi-Stem DST620 and DST660 Series, supplied without a probe. Alongside the battery-powered primary RTD, it carries a second 4-wire RTD wired to an internal 4–20 mA transmitter on 24 V DC loop power. Where the DST621 uses a Turck plug, this version brings the transmitter out through an internal terminal block and 1/2 in NPT female conduit connection, suiting hard-wired installations. The series targets critical duties such as low acid canned food processing, with high reliability components selected for FDA 21 CFR Part 113.
Key features
- Range -45.5 to 260 °C with ±0.1 °F/°C meter accuracy
- Self-checking electronics with "Err" warning
- Probe ID and programmable R0 sensor matching
- DST620 polycarbonate H frame; DST660 laser welded stainless H frame
- Optional "R" selectable resolution and "P" panel mount models
- Specifications
- Downloads
| Part Number | DST620_660_Meter |
| Brand | Palmer Wahl |
| Temperature Range | -45.5 to 260 °C (-50 to 500 °F) |
| Meter Accuracy | ±0.1 °F/°C over 1 year |
| System Accuracy | ±0.2 °C to 148.8 °C; ±0.5% of reading above |
| Secondary Output | 4–20 mA, 24 V DC loop powered |
| Secondary Connection | Terminal block, 1/2 in NPT female conduit |
| Display | 1.0 in 4-digit LCD |
| Ambient | -40 to 70 °C |
| Battery Life | 1+ years at 2 s (C cell) |
| Housing | Stainless steel, NEMA 4X |
| Dimensions | 13.5 x 10.9 x 6.9 cm |
| Weight | 1 kg |
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