Process

Process
Process meters are high precision instruments designed to measure, display, alarm, and control a wide range of process variables, such as 4-20 mA and 0-10 V analog inputs. Precision Digital’s process meters are available with relays, analog and open collector outputs, 24 V transmitter power supply, programmable function keys and advanced signal input conditioning, all of which greatly increase their functionality and utility. Many of these meters include sunlight-readable, dual-line LED displays, wide angle viewing, increased power efficiency, and digital serial communications. Process meters are available in NEMA 4X front digital panel meters as well as FM, CSA, ATEX, and IECEx approved explosion-proof and intrinsically safe meters for hazardous areas.

Process

  • The Nova PD540 is a digital temperature controller with auto-tuning PID capabilities that is available in 1/16, 3/16, 1/8, and 1/4 DIN sizes. Models include standard one-directional control (i.e. heating or cooling) or bi-directional heating and cooling control. One of four user programmable set points may be selected for PID control in the form of time proportional relay on/off output, time proportional voltage pulse output, or 4-20 mA signal control. Its universal input accepts 23 input varieties, including thermocouple, RTD, and voltage inputs, and it can be easily configured for a 4-20 mA input. It is available with up to three (3) relays, two (2) 4-20 mA analog outputs, two (2) digital inputs, and an RS485 serial communication option which includes protocols for master/slave set point control, Modbus® ASCII and RTU, as well as PC software.

    Why you should buy:
    • Auto-Tuning PID Controller
    • Temperature and Process Inputs
    • Heating & Cooling
  • The Nova PD550 is a digital temperature controller with two ramp and soak programs capable of storing 15 segments each for precision PID set point control. It is available in 1/16, 3/16, 1/8, and 1/4 DIN sizes. At the completion of a program, the controller can hold the set point, stop the outputs, or loop to one of the 30-segment programs. Its universal input accepts 23 input varieties, including thermocouple, RTD, and voltage inputs, and it can be easily configured for a 4-20 mA input. It is available with up to three (3) relays, two (2) 4-20 mA analog outputs, four (4) digital inputs, and an RS485 serial communication option which includes protocols for master/slave set point control, Modbus® ASCII and RTU, as well as PC software.



    Why you should buy:
    • Two Ramp & Soak Programs
    • Auto-Tuning PID
    • Temperature and Process Inputs
  • The Nova PD560 is a digital meter that accepts a wide variety of process and temperature inputs and is available in 1/8 and 1/4 DIN sizes. Its universal input accepts thermocouple, RTD, and voltage inputs, and it can be easily configured for a 4-20 mA input. It is available with up to three (3) relays, a 4-20 mA analog outputs, two (2) digital inputs, and an RS485 serial communication option which includes protocols for master/slave set point control, Modbus® ASCII and RTU, as well as PC software.





    Why you should buy:
    • Two Ramp & Soak Programs
    • Temperature and Process Inputs
  • The Nova PD570 is a digital limit controller that accepts a wide variety of process and temperature inputs and is available in 1/16 and 1/4 DIN sizes. Its universal input accepts thermocouple, RTD, and voltage inputs, and it can be easily configured for a 4-20 mA input. It features a latching relays, an alarm relay, and an RS485 serial communication option which includes protocols for master/slave set point control, Modbus® ASCII and RTU, as well as PC software.




    Why you should buy:
    • Temperature and Process Inputs
    • High or Low Limit Control
  • The PD650 is a large display, analog input process meter with flow rate/totalizer and batch control capabilities housed in a rugged, die-cast aluminum, NEMA 4X enclosure. It accepts the common process signals such as 4-20 mA, 0-5 VDC, 1-5 VDC and 0-10 VDC and displays these signals in engineering units on a 2.3" (58.42 mm) large, high efficiency, 4 1/2 digit LED display. The 115/230 VAC models also provide two isolated 24 V power supplies to drive both the input and output loops. Options include up to 4 relays for alarm or batch control and an isolated 4-20 mA transmitter output.

  • The PDS178 Watchdog Temperature Scanning & Alarming System brings together a popular combination of Precision Digital products: the Trident meter, the Minimux II scanner, and the PDA2821 NEMA 4X enclosure. The scanner automatically switches between up to eight (8) input signals (4-20 ma, ±10 V, TC, or RTD) and sends them to the Trident meter for display. Signal switching is done via DPST reed relays. The Watchdog can be used in a variety of temperature and process monitoring applications. A very common application for this system is to monitor bearing temperatures. The Trident meter included with this system is available with standard 0.56" (14.2 mm) high LED digits or large 1.2" (30.5 mm) high LEDs.

  • The PD655 is a large display, analog input process meter with flow rate/totalizer and batch control capabilities housed in a rugged, impact-resistant, glass-filled, polycarbonate NEMA 4X enclosure. Each accepts the common process signals such as 4-20 mA, 0-5 VDC, 1-5 VDC and 0-10 VDC and displays these signals in engineering units on a large, high efficiency, 4 1/2 digit LED display. The meter also provide two isolated 24 V power supplies to drive both the input and output loops. Options include up to 4 relays for alarm or batch control and an isolated 4-20 mA transmitter output.