Products > Control Valves > Controllers, Sensors & Ancillary Products

MODEL
TYPICAL APPLICATIONS
SPECIFICATIONS
     

TR890

The TR890 Series Electronic PID Controller is designed for use on applications where large load changes are expected, or extreme accuracy and fast response times are needed. With full auto-tune capabilities and a large selection of available inputs, the TR890 Series is ideally suited for use with a Watson McDaniel Control Valve.

Features:
  • Multiple Sizes
  • ± 0.3% Accuracy
  • Keyboard Programmable
  • Reverse or Direct Acting
  • Auto-Tuning PID
  • Manual Output Override
  • 4-Digit LED Displays for Process and
    Set Values
  • Nov-volatile EEPROM Data Storage
CATALOG SPEC SHEET(S)
Models:
TR891:
48 x 48 mm (1/16 DIN)
TR892:
72 x 72 mm
TR893:
96 x 96 mm (1/4 DIN)
TR894:
96 x 48 mm (1/8 DIN)
Case Material: Polyphenylene Oxide (PPO)
Accuracy: ± 0.3%
Inputs:  Multi: Switchable between Thermocouple, RTD & mV Scalable
Current: 4-20, 0-20 mA
Voltage: -1-1, 0-1, 0-2, 0-5, 1-5, 0-10 VDC
Control Output:
Current: 4-20 mA (600 Ω max)
Contact: Proportional Cycle, 1-20 sec.
SSR Drive Voltage: Proportional Cycle, 1-20 sec.
Voltage: 0-10 VDC (2 mA max)
Supply Voltage:
  100-240 VAC, 50-60 Hz
  24 VAC, 50/60 Hz
  24 VDC
     

TJD, TKD

The Watson McDaniel Connection Head is available with both Type J and Type K Thermocouples. The weather proof head provides a conduit connection and is available in cast aluminum (screw cover), polypropylene (flip cover) and stainless steel (screw cover). The stem is either welded directly to the 1/2” NPT threaded connection, or is spring-loaded to provide maximum sensitivity. The spring-loaded stem must always be installed in a thermowell.

Features:
  • Cast Aluminum, Polypropylene or Stainless Steel
  • Weather Proof
  • Welded or Spring Loaded Stem
CATALOG SPEC SHEET(S)
Models: TJD, TKD
Head Material: Aluminum, Polypropylene, Stainless Steel
Stem Material: 316 SS
Stem Diameter: 1/4"
Stem Length: 2 1/2", 4", 6", 9", 12"
Insulation: Ceramic
Hot Junction: Ungrounded
Process Connection: 1/2" NPT Welded or Spring-Loaded
Conduit Connection: 3/4" NPT Female
Color Code: Type J: Black, Type K: Yellow
Temperature Range: 32 - 1382 °F (Type J), 32 - 2282 °F (Type K)
     

TDD, TMD

The Watson McDaniel Connection Head is also available with Type D and Type M RTD (Resistive Temperature Device) Sensors. The weather proof head provides a conduit connection and is available in cast aluminum (screw cover), polypropylene (flip cover) and stainless steel (screw cover). The stem is either welded directly to the 1/2” NPT threaded connection, or is spring-loaded to provide maximum sensitivity. The spring-loaded stem must always be installed in a thermowell.

Features:
  • Cast Aluminum, Polypropylene or Stainless Steel
  • Weather Proof
  • Welded or Spring Loaded Stem
CATALOG SPEC SHEET(S)
Models: TDD, TMD
Head Material: Aluminum, Polypropylene, Stainless Steel
Stem Material: 316 SS
Stem Diameter: 1/4"
Stem Length: 2 1/2", 4", 6", 9", 12"
Insulation: Ceramic
Hot Junction: 3-Wire
Process Connection: 1/2" NPT Welded or Spring-Loaded
Conduit Connection: 3/4" NPT Female
Sensor Material: Platinum
Temperature Range: -50 - 700 °F
     

76 Series

 
For applications in which the process media may be corrosive or contained under pressure, the use of a Thermowell is required to prevent damage to the sensing bulb. A Thermowell will also facilitate the removal of the sensing bulb and thermal system from the operating process. Because the sensing bulb is isolated from the fluid, this allows the sensing bulb to be removed without having to drain the liquid below the bulb insertion point.

Note: To prevent leakage of the process media, spring loaded sensors must always be installed in a thermowell. CATALOG SPEC SHEET(S)
Model: 76 Series
Material: Brass, Carbon Steel, Monel, 304 SS, 316 SS
External Thread: 1/2" - 1" NPT
Stem Lengths: 2 1/2", 4", 6", 9", 12", 15", 18", 24"
Lagging Extension Option: 1" (4" stem only), 2" (6" stem only), 3" (9" thru 24" stem only)
Pressure Rating (PSI):
Brass: 3170 @ 150°F
C. Steel: 5000 @ 70°F
Monel: 5530 @ 70°F
304 SS: 6550 @ 70°F
316 SS: 6540 @ 70°F
     

TA901

The TA901 Electropneumatic (I/P) Transducer converts a milliamp current signal to a linearly proportional pneumatic output pressure. This transducer is designed for control applications that require a high degree of reliability and repeatability. The TA901 is used in the control operation of valve actuators and pneumatic valve positioners in the petrochemical, HVAC, energy management, textile, paper, and food & drug industries.

Features:
  • 4 to 20 mA Input
  • 3 to 15 PSI Output
  • Intrinsically Safe
  • Zero and Span Adjustments
CATALOG SPEC SHEET(S)
Model: TA901
Input: 4-20 mA
Output: 1-17 PSIG (can be calibrated to provide 1-9 PSIG or 9-17 PSIG)
Connections, Pneumatic: 1/4" NPT
Connections, Electric: 1/2" NPT
Air Supply Pressure: 3-100 PSIG
Accuracy:
Terminal-Based Linearity: < ±0.75% of span
     

TA987

The TA987 Air Filter/Regulator is recommended for filtering and regulating the pressure of plant compressed air, and for delivering clean, dry air at the proper pressure to pneumatic control devices. Supply air enters the inlet port, passes through the filtering element, and exits through the reducing valve to the outlet port. The filtering element removes particles as small as 40 microns. A drip well is provided for the accumulation of oil and water and a drain cock is included to allow purging of the unit. The filtering element is readily accessible for cleaning by removal of the drip well bowl.

Features:
  • Cast Aluminum Housing
  • Removable Nylon Mesh Filter
  • Low Air Consumption
  • Drip Well
CATALOG SPEC SHEET(S)
Model: TA987
Housing Material: Cast Aluminum
Max Supply Pressure: 250 PSIG
Output Pressure Range: 0-30 PSIG, adjustable
Port Size: 1/4" NPT
Filter: Removes particles 40 microns or greater

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Controllers, Sensors & Ancillary Products