Digi-Stem® DST611 & 651 Series RTD Probes

Digi-Stem Meters & Probes are sold separately and paired together to create a complete custom system. This listing is for the probe only.

Please review our Order Guide and choose the stem length, fitting, and other specifications needed to build and quote a complete probe.

Description

Digi-Stem® meters and probes are sold separately for a completely customizable system.  Pair your Digi-Stem® DST611/DST651 Series Meter with an adjustable angle, straight or angle rigid, or remote probe to meet the requirements of your installation.  DST611 & 651 probes utilize ten conductor cables for dual sensor remote probes.  Note that the secondary RTD is entirely independent, powered by customer provided 24VDC loop power.  The primary RTD sensor, LCD screen, and meter electronics are powered by the internal battery, and comprise the "TID" (temperature indicating device.) Access the secondary sensor via external four pine Turck® connector for watertight access.

Use the quick disconnect option to disconnect the meter and probe for lab calibration, while leaving the cable in place for easy removal and replacement.

DST611 & 651 Series probes feature our unique Probe ID feature available on rigid probes and remote probes with a cable length of 25 meters or less.  Probe ID prevents the connection of unauthorized probes to your DST611 meter; using an unauthorized probe will display a "Prb" error on the LCD screen.  If you don't want Probe ID, please ask for it to be disabled when ordering.

Digi-Stem® DST611 & 651 Series probes utilize Pt100, Class A, 4 wire platinum RTD sensors in MgO packed MI cable.  Programmable RØ allows any initial tiny probe error to be offset in the meter.  Sanitary probes are in compliance with 3A Standard 74-06.

To build your probe, refer to our probe configuration matrix.  Choose one option from each section to build a standard probe configuration.

NIST Traceable Certificate of conformance is available. Read our statement on Calibrating Digi-Stem® Systems for use as Food Processing TID's

Don't see what you need?  We build custom designed probes to meet the requirements of special applications.  Contact us for more information.

Specifications

RTD Sensors

2 - Pt100 Class A 4-wire platinum RTD sensors in MgO packed MI Cable. R0 = 100Ω, Alpha = .00385 Ω/Ω/°C

Process Connection

1/2 inch NPT Fitting
3/4 inch NPT Fitting
1-1/2 inch diameter 3-A Sanitary Standard 74-06; Welded Only, 316L SS Only
2 inch diameter 3-A Sanitary Standard 74-06; Welded Only, 316L SS Only
2-1/2 inch diameter 3-A Sanitary Standard 74-06; Welded Only, 316L SS Only
3 inch diameter 3-A Sanitary Standard 74-06; Welded Only, 316L SS Only
1-1/4 inch x 18 NEF2 Swivel Nut Fitting
1/2 inch NPSM Swivel Nut Fitting
Unthreaded Transition Fitting

Mounting Style

Adjustable Angle (Not available on Remote Stems)
Rigid (Bottom Connected)
Remote (Meter Mounting Bracket sold separately)

Probe Stem Type

Welded
Spring Loaded for 1/2 inch NPT and 3/4 inch NPT process connections and 1/4 inch stem diameter only. Allows approximately 1 inch of spring travel.

Probe Stem Material / Construction

304 SS, Temp Rating 400°F (204°C)
316L SS, Temp Rating 400°F (204°C): not available with tapered bulb

Probe Stem Diameter

1/4 inch
3/8 inch
5/8 inch stem with 7/16 inch tapered bulb (only available in 3.5 inch, 6 inch, 8 inch, 9 inch, and 12 inch lengths)
1/2 inch

Probe Stem Length

Up to 72 inches in length, in 1/4 inch increments

Remote Probes Only: Meter Connection to Cable

Fixed (Cable attached to meter via 1/2 inch NPT fitting, must be disconnected from PCB to separate from meter.)
Quick Disconnect - Straight Connection (Cable attached via IP68 rated TURCK 4-pin plug & receptacle)
Quick Disconnect - 90° Connection (Cable attached via IP68 rated TURCK 4-pin plug & receptacle)

Remote Probes Only: Cable Type

PVC, Temperature Rated 221°F / 105°C. Ten pin connector.

Remote Probes Only: Cable Length

Up to 200 meters in length. Specify exact length required. Probe ID feature is available on remote probes with a cable of 25 meters or less.

Remote Probes Only: Cable Connection to Probe

Fixed (Cable permanently attached to probes process fitting)
Quick Disconnect - Straight Connection (Cable attached via IP67 rated TURCK plug & receptacle)
Quick Disconnect - 90° Connection (Cable attached via IP67 rated TURCK plug & receptacle)