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-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 FarVu PD6870 is an explosion-proof, loop-powered process meter with 1" display digits in a field-mountable enclosure designed for demanding applications in hazardous areas or in the harshest environmental conditions. The meter derives all of its power from the 4-20 mA loop with a small 1 V drop so there is no need to run additional, costly power lines into a hazardous area. Like all ProtEX products, the PD6870 loop-powered indicator carries FM, CSA, ATEX, and IECEx approvals for use in hazardous areas. It is programmed using four easy-to-access, front-mounted control dials.




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  • 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 PD8-150 offers all the functionality of the Vigilante II PD150 as a fully FM, CSA, ATEX, and IECEx approved explosion-proof product. It provides alarming and monitoring capabilities for all of your level, pressure, flow, and other process switches. These explosion-proof alarm annunciators are available in two models; the PD8-154 has four (4) inputs and the PD8-158 has eight (8) inputs. Each model accepts inputs from relays, float switches, digital outputs, and many other discrete (on/off) devices. They can be field programmed for all common ISA alarm sequences including first out indication and provide alarm signaling through front panel LEDs and a built in 85 dB horn. The silence, acknowledge, and reset functions can be operated without opening the housing by using the built-in SafeTouch® through-glass buttons. Custom printed message labels can be included with your order at no additional charge.

    PD8-154
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  • The ProtEX-MAX PD8-6210 offers all the functionality of the ProVu PD6210 as a fully FM, CSA, ATEX, and IECEx approved explosion-proof product. It is an analog input (4-20 mA, 0-5 V, 1-5 V, etc.) digital batch controller specifically designed for single and multi-stage batching applications. It provides excellent but simple batch control capabilities with features such as preclose relays and automatic overrun correction for more accurate batches and convenient SafeTouch® through-glass buttons for simple operation and menu navigation without having to remove the cover. The preclose deactivates a specific relay before the batch is finished in order to allow slower fill rates and increased accuracy. Automatic overrun correction keeps the batch size accurate over time and with system wear. The PD8-6210 includes a 24 VDC power supply to drive the flowmeter and can be equipped with four internal relays and a 4-20 mA analog output.

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  • The ProtEX-MAX PD8-6300 offers all the functionality of the ProVu PD6300 as a fully FM, CSA, ATEX, and IECEx approved explosion-proof product. It is specifically designed to display flow rate and total from a pulse output (NPN, PNP, TTL, switch contact, sine wave, etc.) flowmeter. It displays that signal on a dual-line, 6-digit Sunbright® sunlight readable display. Flow rate is typically displayed on the upper line and the cumulative total is displayed on the lower line. The total overflow feature allows up to a 9-digit total and grand total to be displayed. The PD8-6300 includes a 24 VDC power supply to drive the flowmeter 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 PD8-6001 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 PD8-7000 offers all the functionality of the ProVu PD7000 as a fully FM, CSA, ATEX, and IECEx approved explosion-proof product. It accepts a direct temperature input from a wide range of temperature measurement devices (type J, K, T, E, R, S, B, N, and C thermocouples and 100 or 1000 Ω platinum, 10 Ω copper, 120 Ω nickel RTDs). It displays the measured temperature in either degrees Fahrenheit or degrees Celsius on a dual-line, 6-digit Sunbright® sunlight readable display. The meter includes automatic cold junction compensation for thermocouples and the ability to average up to ten (10) RTD sensors. The PD8-7000 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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