DIGI-STEM Systems and Stems

• 1"  Display, Continuous
• Battery  Operated, up to 18 Months
• Easy  Install
• NEMA-4X  Stainless Housing
• Hose-Down  Proof, Vibration Tolerant
• RTD  or Thermocouple Output (Optional)
• 4-20  mA Transmitter with Local Display, Loop Power
• Selectable  Stems, Integral or Remote 

Wahl's DIGI-STEM Thermometer and  Transmitter Systems provide digital accuracy and reliability for temperature measurements  in rugged industrial environments.

Temperature readings are  continuously displayed on a large 1"LCD,easily readable from over 20 feet. Meter  accuracies are from ± 0.3°F (± 0.2°C). Factory calibration is lot traceable to NIST.

Wahl offers a variety of rigid stems  and remote interface connections to accommodate most installations.

For system control and recording  interface,optional stems are offered with dual sensor elements that provide direct access  to thermocouple or RTD outputs. Or specify DIGI-STEM Transmitter Models DSX300 and DSX310. .

Battery-Powered Display

Display Transmitter

Model

DST200

DST300

DST310

DSX300

DSX310

Range

0 to 199.9°F
-20 to 130.0°C
DSA20: 0 to 199.9°C
DSA21: -20 to 150°C

0 to 300°F
DSA30: 0 to 600°F

2000 to 800°F
100 to 425°C
DSA31: 0 to 800°F
0 to 425°C

0 to 300°F
-18 to 150°C

200 to 800°F
100 to 425°C

Display Resolution

0.1 °F/°C

0.1°: 0 -150°F
1°: above 150°F

0.1 °F/°C

0.1°: 0 -150°F
1°: above 150 - 300°F

0.1 °F/°C

Meter Accuracy

±0.3°F
±0.2°C

±1.1°: 0 -150°F
±2°: above 150°F

±2°: 200 -600°F
±4°: elsewhere

±1.1°: 0 -150°F
±2°: 150 - 300°F

±2°: 200 -600°F
±4°: 600 - 800

Digital Display

Large 1", high-contrast LCD,  update rate 1/sec.

Loop Update

N/A

Continuous

Point Calibration

External

Internal

Ambient Temperature

20 to 130°F (-7 to 54°C)

20 to 158°F (-7 to 70°C)

Ambient Coefficient

0.02 deg/deg from 75°F

0.04 deg/deg from 75°F

Material

Meter Case, fittings, stems: 300  stainless. Window and molding: Polycarbonate. Gasket: silicone

Battery Power

2 "C" cell alkaline

1 lithium "C" cell

2 "C" cell alkaline

N/A

Battery Life

18 months

2 years

18 months

N/A

Loop Power

N/A

12/42 VDC min/max

Loop Output

N/A

4 - 20 ma; fixed zero and span

FM Rating

Options DSAFM: Intrinsically  Safe, Class I, II, and III, Div. 1,2 Groups ABCDEFG

Housing

Rating NEMA. Dimensions  5.3"W × 4.3"H × 2.7"D

Weight

2 lbs.

Remote Sensor Systems

DIGI-STEM® is offered in a variety  of configurations to measure process temperatures remotely located from the meter.  Optional remote sensor cables are available with different stem configurations. Stems can  be specified for a variety of process connections or interfaces, including different  thermowell adapters,penetration probes and immersion probes.

DST200 with optional DSA392HP Dual  RTD Sensor in stem and connection on case. Shown with Platinum-RTD 392HP Meter used for  calibration. 

RTD or Thermocouple Output

Direct Connection: Wahl provides  optional DIGI-STEM with dual element temperature sensors in the stem for direct connection  to recorders and controllers. The primary sensor drives the local display while the  dedicated secondary sensor (RTD or thermocouple) provides access to a 3-or 4-wire RTD  circuit or a thermocouple system interface. The connecting port is 1/2"NPT.

In Situ Calibration: Specify option  DSA392 for in situ calibration of DIGI-STEM Model DST200 without removal from a  process. This instrument has an RTD as the secondary sensor, which allows single-point  calibration using Wahl's highly accurate platinum-RTD Heat Prober 392 Meter. This provides  the accuracy of a laboratory calibration and saves time and money,as well. 

Stainless Steel Stems

1. Cut-to-Length:  Compression seal; for direct immersion in fluids and for thermowell applications.
2. Sanitary: Authorized 3-A Sanitary  Standard 09-09 for 1.5" to 3.0" diameter tube sizes with tri-clamp fitting for  milk,food and pharmaceutical processing.
3. Spring loaded: Maintains a positive force against the bottom of thermowells;not for  direct immersion in fluids; assembly is not sealed.
4. Brazed: For use in  thermowells.
5. Welded: Sealed for  immersion in fluids;for use in thermowells, sanitary, and high-pressure applications. 

Transmitter Systems

Wahl offers loop-powered transmitter  versions of DIGI-STEM with continuous, digital, local display. The transmitter is an integral    meter and electronics assembly in NEMA-4X housing with a 4-20mA, 2-wire current  loop. Model DSX300 has a temperature range of 0 to 300°F (-18 to 150°C), while Model  DSX310's range is 200 to 800°F (100 to 425°C). The transmitters incorporate all  DIGI-STEM family features, including stainless steel construction, large digital  display, reliability, and rugged construction.

HANDHELD TEST INSTRUMENTS TM-400 Digital Heat-Prober®

For Industrial Maintenance and Test Applications

Type K Thermocouple, Handheld Meter with Interchangeable Probes

• Moving Air and Gasses
• Hot Plate and Surface Areas
• Liquids and Slurries  Immersion
• Semisolid Melts
• Pipe Surfaces
• Process Spot Testing
• Laboratory and Photo  Processing
• Refrigeration Units
• Exhausts, Duct Works and  Vents
• Molds and Platens
• Bearing Loads
• Combustion Tubes
• Electronic and Electrical  Overheat
• Insulation Checks
• Curing and Drying Oven  Settings
• Food Processing, Preparation,  Storage and Transportation
• Small Component Testing
• TM-400 Product Features
  • Handy, ergonomically designed meter with large-reading LCD.
  • Switches between Fahrenheit and Celsius scale readings.
  • Range of -58° to 1999° Fahrenheit (-50° to 1300° Celsius).
  • Display resolution switch for choice of 1.0° or 0.1°, F or C.
  • Accepts Type K probes with standard ANSI mini-connectors.
  • "Data Hold" button captures and holds the current reading.
  • "Max Hold" button captures and holds the maximum reading.
  • Display annunciation indicates "Hold", "Max", "°F",  "°C" temperature readings in addition to a low battery warning.
  • Powered by four 1.5V, AAA size batteries for 200 hours operation under typical usage  conditions.
  • Supplied completely operational with nylon carrying case with belt loop, one test probe  and four batteries.
  • CE Compliant.

TM-400 Digital Heat-Prober® Handheld Digital Type K Thermocouple Meter Specifications:

• Temperature Scale: User switchable from Fahrenheit to Celsius
• Measurement Range: -58°F to 1999°F and -50°C to 1300°C
• Display Resolution: User switchable, 1.0° or 0.1°, Fahrenheit or Celsius
• Accuracy: At ambient temperatures of 68°F to 82°F (18°C to 28°C):
•           +/- 0.3% of reading + 2°F from -58°F to 1832°F
•           +/- 0.5% of reading + 2°F from 1832°F to 1999°F
•           +/- 0.3% of reading + 1°C from -50°C to 1000°C
•           +/- 0.5% of reading + 1°C from 1000°C to 1300°C
• Temperature Coefficient: 0.1 times the applicable accuracy specification per °F from  32°F to 65°F,  82°F to  122°F
• Input Connector: Standard ANSI mini-connector
• Input Protection: 24V DC or 24V AC rms maximum input voltage on any combination of input  pins
• Display Update Rate: 2.5 times per second
• Ambient Op. Range: 32°F to 122°F (0°C to 50°C) at <80% R.H.
• Storage Temperature: -4°F to 140°F (-20°C to 60°C) at <70% R.H.
• Display: 3 1/2 digit Liquid Crystal Display, max reading of 1999
• Battery: Four 1.5V (AAA, UM-4, RO3) batteries
• Battery Life: Estimated 200 hours for carbon zinc batteries under normal usage conditions.  Display annunciation at lower left of the LCD indicates "low batteries"
• Dimensions: 6 5/8" high, 1 5/8" wide, and 1 3/4" deep, (166 mm X 41mm X 44  mm)
• Weight: 6 oz (170 g), with batteries

Type K Thermocouple Probes and Accessories:

Model No. Description

1. TP-100 Needle-tip Penetration Probe, 4" Shaft, Direct Connect to Meter
2. TP-101 Fine-tip Penetration Probe, 4" Shaft, Direct Connect to Meter
3. TP-102 Sharp-tip Penetration Probe, 6" Shaft, Direct Connect to Meter
4. TP-200 General-purpose Immersion Probe, 8" Shaft, Direct Connect to Meter
5. TP-300 Alligator Clip-on Oven or Air Probe, 4' Length High-Temperature  Insulated Connector Cable
6. TC-801 Heavy-duty Immersion Probe, 8" Shaft with 5" Delrin® Handle and  5' Coiled Extension Cable
7. TC-805 Air/Gas Probe, Shielded Bare Sensor for Ultra-fast Response, 5"  Delrin® Handle and 5' Meter/Probe Connector Cable
8. TC-813 Bolt-on Surface/Oven Probe, 5/8" Diameter Stainless Steel Washer with  4' Length Overbraid High-Temperature Cable
9. TC-869 Spring Articulated Surface Probe, 45° Tip Angle, 8" shaft with  rugged 5" Delrin® Handle, Connected to Meter by 5' Cable
10. TCL-329 Handy Meter-to-Probe Extension Handle with 5' Coiled Cable. Allows  Direct-Connect Probe's Use as a Handle Type Probe
11. TA-70AF 5-Position Thermocouple Meter Calibrator. Allows Quick and Accurate Field  Calibration (for Fahrenheit Scale Only)
12. TA-70AC 5-Position Thermocouple Calibrator (for Celsius Scale Only)

Type K Thermocouple TM-500 Digital Heat-Prober®

For Advanced Industrial Maintenance and Test Applications, Handheld Meter with Interchangeable Probes

1. Advanced temperature measurement capability for today's complex industrial  requirements.
2. With surface probes for monitoring molds, dies, platens, bearing surfaces, hot  plates and electrical components.
3. With immersion probes for subsurface readings of liquids and semi-liquids,  including calibration baths and laboratory testing applications.
4. With penetration probes for internal temperatures of foods, plastic melts,  rubber, etc.
5. With air probes for quick check of gas streams, storage rooms, exhaust pipes or  HVAC ducts.
6. Many other probes for your specific needs.

TM-500 Product Features

• Battery-powered, microprocessor controlled thermocouple meter for use with interchangeable  sensing probes.
• Large LCD provides independent and concurrent temperature readings from two probes.
• Dual probe input accepts one or two Type J or Type K Thermocouple probe(s) with standard  ANSI mini-connectors.
• Selectable temperature scale, Fahrenheit or Celsius readings.
• Type J Range of -328°F to 1,922°F (-200°C to 1050°C).
• Type K Range of -328°F to 2,498°F (-200°C to 1370°C).
• Main LCD displays the temperature reading from either selected probe or the temperature  difference between the two.
• Third LCD displays time or timing duration (hours, minutes, seconds) of max / min or  average temperature events.
• "Recording" mode allows data storage for max, min, and average temperatures  reached over a timed period.
• "Set" mode allows entry of reference and alarm points.
• Completely portable, powered by one 9V battery.
• Supplied with water and shock resistant rubber boot, built-in easel stand, 9V battery, and  two Type K test probes.
• CE Compliant.

Specifications:

• Temperature Scale: User switchable from Fahrenheit to Celsius
• Measurement Range: Type J:-328°F to 1922°F and -200°C to 1050°C
• Type K: -328°F to 2498°F and -200°C to 1370°C
• Display Resolution: 0.1°, Fahrenheit or Celsius
• Accuracy: At ambient temperatures of 64°F to 82°F (18°C to 20°C):
•          +/- 0.05% of reading + 0.6°F from -58°F to 2498°F
•           +/- 0.05% of reading + 1.4°F from -58°F to -328°F, OR
•           +/- 0.05% of reading + 0.3°C from -50°C to 1370°C
•           +/- 0.05% of reading + 0.7°C from -50°C to -200°C
• Temperature Coefficient: 0.1 times the applicable accuracy specification per °C from 0°C  to 18°C and 28°C to 50°C (32°F to 64°F and 82°F to 122°F)
• Input Connector: Standard ANSI mini-connector, Type J or Type K probes
• Input Protection: 24V DC or 24V AC rms maximum input voltage on any combination of input  pins
• Voltage Differential: 1 Volt maximum between T1 and T2
• Display Update Rate: 1 time per second
• Ambient Op. Range: 32°F to 122°F (0°C to 50°C) at <80% R.H.
• Storage Temperature: -4°F to 140°F (-20°C to 60°C) at <70% R.H.
• Display: 5 Digit Liquid Crystal Display
• Battery: One standard 9V (NEDA 1604 or equivalent)
• Dimensions: 7 1/2" high, 3 5/8" wide, and 2 1/8" deep (190 mm X 92 mm X 54  mm)
• Weight: 15.5 oz. (or 440 g) with battery and test probes

Type K Thermocouple Probes and Accessories:

Model No. Description

1. TP-100 Needle-tip Penetration Probe, 4" Shaft, Direct Connect to Meter
2. TP-101 Fine-tip Penetration Probe, 4" Shaft, Direct Connect to Meter
3. TP-102 Sharp-tip Penetration Probe, 6" Shaft, Direct Connect to Meter
4. TP-200 General-purpose Immersion Probe, 8" Shaft, Direct Connect to Meter
5. TP-300 Alligator Clip-on Oven or Air Probe, 4' Length High-Temperature  Insulated Connector Cable
6. TC-801 Heavy-duty Immersion Probe, 8" Shaft with 5" Delrin® Handle and  5' Coiled Extension Cable
7. TC-805 Air/Gas Probe, Shielded Bare Sensor for Ultra-fast Response, 5"  Delrin® Handle and 5' Meter/Probe Connector Cable
8. TC-809 Heavy-duty Surface Probe with Snap-in Tips, 5" Shaft, 5"  Delrin® Handle. Order "S" (straight), "H" (45°) or "R"  (90°) suffix
9. TC-813 Bolt-on Surface/Oven Probe, 5/8" Diameter Stainless Steel Washer with  4' Length Overbraid High-Temperature Cable
10. TC-869 Spring Articulated Surface Probe, 45° Tip Angle, 8" shaft with  rugged 5" Delrin® Handle, Connected to Meter by 5' Cable
11. TCL-329 Handy Meter-to-Probe Extension Handle with 5' Coiled Cable. Allows  Direct-Connect Probe's Use as a Handle Type Probe
12. TA-70AF 5-Position Thermocouple Meter Calibrator. Allows Quick and Accurate Field  Calibration (for Fahrenheit Scale Only)
13. TA-70AC 5-Position Thermocouple Calibrator (for Celsius Scale Only)

Own This Workhorse 1370/2500 Series Temperature Measurement System

• Temperature  Measurement Range: Type K, -100  to 2,500 °F or -70 to 1,370°C
• Resolution:  1°F or 1°C
• Calibration  and Error Standard: in accordance with standards DIN43710 and BS1847
• Meter  Accuracy @25°C (77F): ±0.2% of reading ±1 digit
• Series  Mode Rejection: 50dB at 60Hz
• Zero  Drift: Automatically corrected with Auto-zero
• Environmental  Temperature Range: -20 to 120°F (-29 to 49°C)
• Size/Weight:  3" wide × 6" long  × 1" high ((7.5 cm × 15 cm × 2.5 cm                          10.5 oz. (283 gm)

Heat-Prober® portable thermocouple thermometers and probes are the most rugged and reliable made for process and maintenance temperature measurements.

The pocket sized microprocessor-based Heat-Prober Type K thermometer updates readings three times per second with an accuracy of ±0.2% of reading ±1 digit and 1°F/°C resolution. The precision cold junction is compensated with a unique, permanently calibrated circuit.

Advanced electronics are housed in ABS plastic, thoroughly tested for environmental integrity and subjected to 4-foot drop tests, battery life and running life tests. All units are calibrated with simulated EMF inputs and powered during a high-temperature burn-in cycle.

The result is a thermometer so durable and reliable that it comes with a 3-year warranty. Heat-Prober's standard large LCD for enhanced readability and Maxi-Temp® peak hold help to assure your peak performance in monitoring temperatures.

WP410 Hand Held Thermometer with Printer

• Measures  from -328 to 2192°F (-200 to 1200°C)
• Auto ranging  resolution of 0.1/1°F/C
• Use  Type K thermocouple
• Large  0.375" LCD temperature digits
• Five  selectable automatic printing intervals
• Battery  or AC-line operated
• Standard  1 1/2" thermal paper

Wahl's new WP-410 Portable Temperature Printer fits in the palm of your hand, yet comes with features found only in larger instruments.

The printer's microprocessor circuit provides an auto ranging decimal point and polarity of ± 0.1° from -72 to 572°F (-50 to 300°C) and ±1° thereafter. The complete temperature range is -328 to 2192°F (-200 to 1200°C) with an accuracy of ± 0.3% of reading ±2 digits.

Completely portable, the WP410 continuously monitors and displays temperature data while offering selectable printing intervals from 3 second to one hour. The unit's thermal printer can temperatures unattended for up to 30 days.

Each print run includes a time and data heading. Every printed temperature is either data or sequentially stamped. Time is on a 24-hour clock. Sequential numbering is 0000-9999.

The portable instrument is compatible with a wide range of Wahl Type K thermocouple probes. These include probes for stationary, moving surface, liquid, air, semi-solid and special applications. 

SPECIFICATIONS
Input                               Type K, accepts miniature TC connectors
Temperature Range      -328 to 2192° F (-200 to 1200°C)
Resolution                     0.1° from -72 to 572°F (-50 to 300°C), 1° thereafter
Accuracy                      ± 0.5% rdg ±2 digits ( Resolution 0.1°)
                                       ± 0.3% rdg ±2 digits ( Resolution .1°)
LCD Display Size         .375" digit, temperature; .188" time
Printing Rate                 1 second per line with memory backup
Printing Digit/Size        .188"
Calendar Set                  Yr/mo/day/hr/min/sec
Weight (ounces)           12
Dimensions (inches)     2-3/4W × 7-3/4D × 3/4 to 1-5/8H
Power Supply                4 AA (R6) alkaline batteries