Digi-Stem® meters and probes are sold separately for a completely customizable system. The Digi-Stem® DST621 model digital thermometer offers all the benefits of our DST600 series digital thermometer, with the addition of a second, four wire RTD wired to an internal 4-20 mA transmitter. The primary RTD is powered by the battery, and acts as the reference thermometer / TiD for the entire system. The second RTD is powered by customer provided 24VDC loop power for complete separation; use the secondary RTD for output to a recorder or control panel. Access the transmitter via a Turck® brand four pin connector for watertight access on the side of the case.
The Wahl Digi-Stem® DST621 Digital Thermometers is designed for critical applications, with low acid canned food processing in mind. A reliable and secure option, the DST621 series features self-checking technology to continuously verify the accuracy of its electronics and indicate any out-of-tolerance condition by displaying "Err" on the screen. The unique Probe ID feature prevents the connection of unauthorized probes to the meter.
The DST621 series uses high precision, high reliability components to meet the requirements of FDA Final Rule 21 CFR Part 113 for replacing traditional Mercury-in-Glass thermometers.
Pt100, Class A 4 wire platinum RTD sensors in MgO packed MI cable with a wide temperature range and high accuracy design for applications that require accurate and reliable temperature monitoring are used. Choose from rigid, remote, or adjustable angle RTD probes built to order to customer specification and sold separately. The DST621 Series utilizes programmable “R0” for “matching” the sensor to meter.
Our Digi-Stems® are known for their reliability and rugged cases. The housing is stainless steel with a NEMA-4X rating. Dimensions are 5.3 inches wide x 4.3 inches high x 2.7 inches deep (13.5cm wide x 10.9 high x 6.9 cm deep). The large 1 inch high LCD display is readable from 30 feet away. Optional panel mount is also available.
Polycarbonate H frame is standard; choose the DST661 with laser welded stainless steel H-Frame for additional protection against RF interference and moisture intrusion.
The primary RTD is powered by one C size, Lithium Thionyl Chloride, 3.6V battery. Due to shipping restrictions, meters with this battery must be shipped by ground transport. For international or air shipping, choose the "I" option, configured for and powered by one AA size, Lithium Thionyl Chloride, 3.6V battery, or the "NB" option for the meter only with no battery included: purchase the required battery from a supplier near your location.