Hazardous Area

Hazardous Area
Precision Digital manufactures a wide range of rugged meters and controllers designed for quick and easy display of a variety of process signals in harsh or hazardous areas. These signals include 4-20 mA, 0-10 V, strain gauge, pulse, thermocouple and RTD. Our hazardous-area instruments are approved by FM, CSA, ATEX, and IECEx as explosion-proof, intrinsically safe, and nonincendive. Many of our explosion-proof models feature SafeTouch® through-glass buttons which ensure safe operation without the need to remove the cover. Intrinsically safe, loop-powered instruments derive their operating power from the 4-20 mA current loop with a relatively low voltage drop, preventing the need to run additional, costly power lines into the hazardous area.

Hazardous Area

  • The ProtEX-RTA PD6820 is an explosion-proof, loop-powered flow rate/totalizer that can display flow rate and total from an analog output (4-20 mA) flowmeter. The fact that this meter is loop-powered means that there is no need to run additional, costly power lines into a hazardous area. The display has a five digit upper display for rate, a seven alpha-numeric character lower display for total, and comes standard with a backlight. Like all ProtEX products, the PD6820 explosion-proof flow rate/totalizer carries FM, CSA, ATEX, and IECEx approvals for use in hazardous areas. Two features that really make this flow rate/totalizer stand out are a wide viewing angle display and SafeTouch® through-glass buttons. These buttons allow the PD6820 to be programmed and operated through the glass, thus eliminating the need to remove the cover in a hazardous area.

  • The ProtEX-RTP PD6830 is an explosion-proof flow rate/totalizer that can display flow rate and total from a pulse output flowmeter. Its display has a five digit upper line for rate, a seven alpha-numeric character lower line for total, and comes standard with a backlight. Like all ProtEX products, the PD6830 carries FM, CSA, ATEX, and IECEx approvals for use in hazardous areas. It can be powered from an included battery or a 24 VDC external power supply. Some features that really make the PD6830 flow rate/totalizer stand out are its automatic unit conversions from flowmeter k-factor units, ability to log up to 1024 data points, and SafeTouch® through-glass buttons. These buttons allow the PD6830 to be programmed and operated through the glass, thus eliminating the need to remove the cover in a hazardous area.


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  • The ProtEX PD6830X is an explosion-proof, RS485 serial input Modbus® RTU scanner capable of scanning up to 16 Modbus variables and displaying them on an easy-to-read, dual-line, LCD display. This Modbus scanner can be programmed as a Modbus RTU master, slave, or snooper. The PD6830X is available in two upper display line configurations: 5-digit decimal display and feet & inches display with bar graph. The lower line is the same for both versions and consists of seven alphanumeric characters. Like all ProtEX products, the PD6830 carries FM, CSA, ATEX, and IECEx approvals for use in hazardous areas. Two features that really make the PD6830X stand out are its wide viewing angle display and SafeTouch® through-glass buttons. These buttons allow the PD6830X to be programmed and operated through the glass, thus eliminating the need to remove the cover in a hazardous area.

  • The ProtEX-MAX PD8-765 explosion-proof, large-display, process and temperature meter offers all the functionality of the Trident X2 as a fully FM, CSA, ATEX, and IECEx approved explosion-proof product. PD8-765's huge 1.2" (30.5 mm) sunlight readable display that is visible from over 30 feet away. This explosion-proof indicator can be field programmed to accept process voltage (0-5 V, 1-5 V, etc.) and current (4-20 mA) inputs, 100 Ohm RTDs, and the four most common thermocouples. The intensity of the display can be adjusted to compensate for various lighting conditions, including direct sunlight. The meter can be programmed and operated without opening the housing by using the built-in SafeTouch® through-glass buttons or the RS485 serial communication port with free Modbus® protocol. Options for the PD8-765 process and temperature indicator include 2 relays, a 4-20 mA output, and a 24 V transmitter power supply.

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  • The ProtEX-MAX PD8-6000 explosion-proof process meter offers all the functionality of the ProVu PD6000 as a fully FM, CSA, ATEX, and IECEx approved explosion-proof product. It accepts a process current (4-20 mA) or process voltage (0-5V, 1-5V, etc.) signal and displays it on a dual-line, 6-digit Sunbright® sunlight readable display. The meter includes a 24 VDC power supply to drive the transmitter and can be equipped with four internal relays and a 4-20 mA output. The PD8-6000 can be programmed and operated without opening the housing by using the built-in SafeTouch® through-glass buttons or the RS485 serial communication port with free Modbus® protocol.

  • The ProtEX-MAX PD8-6001 explosion-proof level indicator offers all the functionality of the ProVu PD6001 as a fully FM, CSA, ATEX, and IECEx approved explosion-proof product. It is specifically designed to display level in feet & inches, instead of the usual decimal format. The meter accepts a process current (4-20 mA) or process voltage (0-5V, 1-5V, etc.) signal and displays that signal on a dual-line display with convenient feet and inches designations on the upper line. The upper display can even read fractions of an inch in 8ths or 16ths. The lower line can be used to indicate a tag or to display the input in another scale, such as volume in gallons or liters. The PD8-6001 includes a 24 VDC power supply to drive the transmitter and can be equipped with four internal relays and a 4-20 mA output. It can be programmed and operated without opening the housing by using the built-in SafeTouch® through-glass buttons or the RS485 serial communication port with free Modbus® protocol.

  • The ProtEX-MAX PD8-6060 offers all the functionality of the ProVu PD6060 as a fully FM, CSA, ATEX, and IECEx approved explosion-proof product. It accepts two inputs of either a process current (4-20 mA) or process voltage (0-5V, 1-5V, etc.) signal. It displays these signals on a dual-line, 6-digit Sunbright® sunlight readable display. The meter can be customized such that these two inputs are displayed in a variety of ways, including both at the same time with tags or the result of math functions performed on one or both of the inputs. The PD8-6060 includes a 24 VDC power supply to drive the transmitter and can be equipped with four internal relays and a 4-20 mA analog output. It can be programmed and operated without opening the housing by using the built-in SafeTouch® through-glass buttons or the RS485 serial communication port with free Modbus® protocol.

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  • The ProtEX-MAX PD8-6080 Super Snooper Modbus® scanner offers all the functionality of the ProVu PD6080 as a fully FM, CSA, ATEX, and IECEx approved explosion-proof product. It is a multi-purpose display and controller capable of scanning up to 16 process variables and includes dual analog process inputs. The scanner can be programmed as a Modbus RTU master, slave, or snooper. It is the ideal display for Modbus multivariable transmitters or for existing Modbus networks with transmitters in need of a conveniently located display in a hazardous area. As a master, the PD8-6080 can read up to 16 Modbus registers on up to 16 Modbus devices and automatically alternate each of these process variables (PVs) on the dual-line display along with a unit and tag for each. In snooper mode, the scanner can read any Modbus variables being polled by a master, which allows you to easily add a display into an existing Modbus network. Powerful math functions may be applied to the analog or Modbus inputs, such as addition, difference, average, and ratio. The PD8-6080 includes a 24 VDC power supply to drive the transmitter and can be equipped with four internal relays and two 4-20 mA outputs. It can be programmed and operated without opening the housing by using the built-in SafeTouch® through-glass buttons.

  • The ProtEX-MAX PD8-6081 Super Snooper feet & inches Modbus® scanner offers all the functionality of the ProVu PD6081 as a fully FM, CSA, ATEX, and IECEx approved explosion-proof product. It displays level information on a specially designed feet & inches display, instead of the usual decimal format. It is the ideal display for hazardous areas with Modbus level or multivariable transmitters and is capable of scanning up to 16 process variables. Its unique feet & inches upper LED display can indicate up to 99 feet, 11 and 15/16 inches. The 6-digit lower display can indicate units, tags, or other variables such as volume, temperature, or density. The PD8-6081 also has dual analog inputs, for integrating traditional 4-20 mA or voltage inputs in the display scanning. The scanner can be setup as a Modbus master, slave, or snooper. Various math functions may be applied to the analog or Modbus inputs, such as addition, difference, average, and ratio. The PD8-6081 includes a 24 VDC power supply to drive the transmitter and can be equipped with four internal relays and two 4-20 mA outputs. It can be programmed and operated without opening the housing by using the built-in SafeTouch® through-glass buttons.

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  • The ProtEX-MAX PD8-6100 offers all the functionality of the ProVu PD6100 as a fully FM, CSA, ATEX, and IECEx approved explosion-proof product. It accepts strain gauge & load cell inputs and mV signals up to 300 mV (unipolar) and ± 250 mV (bipolar) for weight and force measurement applications. With a max output current of 350 mA at 10 V, it can support up to twelve (12) 350 Ω load cells (minimum load resistance of 28 Ω), making them ideal for multipoint weight measurement applications. The PD8-6100 strain gauge meter’s dual-line display and powerful dual-scale capability allows the measurement to be displayed in two different units of measure. Another use for the PD6100’s dual-lines is to simply display the units of measure on the bottom line. SafeTouch® through-glass buttons allow for access to zero, tare, and other functions without the need to remove the enclosure cover. The PD8-6100 includes a 24 VDC power supply to drive the sensors and can be equipped with four internal relays and two 4-20 mA outputs.

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