EXPLOSION-PROOF, INTRINISICALLY SAFE, & NONINCENDIVE
METERS, DISPLAYS & CONTROLLERS

Precision Digital products can be located in a wide variety of hazardous areas. We provide products that are intrinsically safe, non-incendive, explosion-proof or can be housed in explosion-proof enclosures.

Loop-Powered Meters

Panel Mount	Model	# of Digits	Digit Height	Voltage Drop	Input 4-20 mA	Display Features	Approvals	Temperature Range
	PD688	5	0.6"	2.7 V (5.7 V with backlight)	Linear, Square root, & Programmable exponent	Backlight Engineering units Bargraph Engineering notation Trend arrows	FM & CSA	-40 to 65°C
	F090	5½	1.0"	2.6 V	Linear & Square root	Backlight Engineering units Piegraph Engineering notation Trend arrows	ATEX & CSA	-40 to 70°C

NEMA 4X	Model	# of Digits	Digit Height	Voltage Drop	Input 4-20 mA	Display Features	Approvals	Temperature Range
	PD686	3½	1.0"	1.0 V	Linear	–	FM & CSA	-40 to 85°C
	PD675	4½	0.7"	5.2 V	Linear	–	FM & CSA	-20 to 65°C
	F090	5½	1.0"	2.6 V	Linear & Square root	Backlight Engineering units Piegraph Engineering notation Trend arrows	ATEX & CSA	-40 to 70°C

Explosion-Proof	Model	# of Digits	Digit Height	Voltage Drop	Input 4-20 mA	Display Features	Approvals	Temperature Range
	PD661	3½	0.5"	1.5 V 3.5 V w/ backlight	Linear	Backlight option	FM & CSA	-40 to 80°C
	PD687	3½	1.0"	1.0 V	Linear	–	FM & CSA	-40 to 80°C
	PD677	4½	0.7"	5.2 V	Linear	–	FM & CSA	-20 to 65°C
	F090 with PDA2448	5½	1.0"	2.6 V	Linear & Square root	Backlight Engineering units Piegraph Engineering notation Trend arrows	ATEX & CSA	-40 to 70°C

Meters in Explosion-Proof Enclosures

Precision Digital can supply explosion-proof enclosures that can house one or two Precision Digital meters or one Fluidwell instrument.

Model PDA2448 House one Fluidwell instrument CSA Certified and UL Classified Class I Groups C & D Class II Groups E, F, G Click here for more information	Model PDA2444-2446 House one or two Precision Digital Meters UL and C-UL Classified Class I Groups B, C & D Class II Groups E, F, G Click here for more information
Explosion-Proof Control Stations
	One, Two, Three Buttons UL and C-UL classified Class I Groups C & D Class II Groups E, F, G
PD656 Explosion-Proof Meter
4-20 mA, 1-5 V, 0-10 V inputs 0.8" (20.3 mm) red LED display Transmitter power supply 4 relays & 4-20 mA output options

Hazardous Area Flow Rate/Totalizers

Model	PD689	PD698	PD656
Description	Rate/Totalizer	Rate/Totalizer	Rate/Totalizer
Case	Panel mount	Explosion-proof	Explosion-proof
Panel Cutout	1/8 DIN	N/A	N/A
Material	Plastic	Aluminum	Aluminum
Display Type	LCD	LCD	LED
Display Format	Alternating	Alternating	Alternating
# of Digits: rate	5	4½ with extra zero	4½ with extra zero
# of Digits: total	5	6	6
# of Digits: Acc total	N/A	N/A	N/A
Digit Height	0.5"	0.5"	0.8"
Eng Units Display	Yes	No	No
Backlight	Standard	Yes	N/A
Bargraph	Standard	N/A	N/A
Input(s)	4-20 mA	4-20 mA	4-20 mA 0-10 V
Linearization	Square root & programmable root	Square root	2 to 11 points
Voltage Drop	2.0 V w/o backlight 5.7 V with backlight	5.6 VDC w/o Backlight 7.0 VDC w/ Backlight	N/A
Alarms	high or low rate alarm	N/A	4
Relays	N/A	N/A	2 or 4 Form C
Analog Output	N/A	N/A	Yes
Pulse Output	250 pulses/sec max	Isolated open collector	None
Power	Loop-powered	Loop-powered	AC or DC
Temperature Range	-40 to 65°C	0 to 65°C	-20 to 65°C
>Approvals	FM & CSA	FM & CSA	Enclosure only

Hazardous Area Fluidwell Flow Rate/Totalizers
	F011 with backlight on	F012, F014, F110, F016, F112
	F111 with backlight off	F013 & F113 in alarm condition
Hazardous Area Flow Rate/Totalizers Linearization High/Low Alarms F010 F011 F012 F014 F110 F111 F115 F016 F112 F118 F013 F113   Pulse, NAMUR, coil input 0-20 mA, 4-20 mA input   0-10 V input   Actual flo rate   Actual total (resettable)   Accumulated total (non-resettable)   Multi-point linearization                   Analog output (flow rate)               Pulse output assigned to total         High & low alarms                   Flow direction detection                       Dual input                     External reset total                   RS-232, RS-485, TTL               Intrinsically safe or exp-proof CSA & ATEX CSA & ATEX CSA & ATEX CSA & ATEX ATEX ATEX ATEX CSA & ATEX ATEX ATEX CSA & ATEX ATEX Backlight

Explosion-Proof Enclosures For Fluidwell Flow Rate/Totalizers

Hazardous Area Flow Computers
	F126-EL with backlight on	F126-EG with backlight off
	F114 with ratio in alarm condition	F116 & F127-EL with sum/differential
Hazardous Area Flow Computers Ratio Differential/sum   F126-EL F126-EG F114 F116 F127-EL   Pulse, NAMUR, coil input 0-20 mA, 4-20 mA input   0-10 V input   Actual flow rate Actual total (resettable) Accumulated total(non-resettable)   Actual temperature     Actual pressure         Analog output (flow rate) Pulse output assigned to total         High & low alarms         Temperature compensation     Pressure compensation         Dual input     Fuel compensation calculation       Sum calculation (add on)         Ratio calculation         RS-232, RS-485, TTL Intrinsically safe or exp-proof ATEX ATEX ATEX ATEX ATEX Backlight

Explosion-proof enclosures For Fluidwell Flow Computers

Hazardous Area Batch Controllers
	F030, F130, & F136 with batch paused & backlight off	F131 & F133 with backlight on
Hazardous Area Batch Controllers/Dispensers   F030 F130 F131 F133 F136   Pulse, NAMUR, coil input 0-20 mA, 4-20 mA input   0-10 V input   Actual flow rate     Actual total (resettable) Accumulated Total (non-resettable) Batch controller         Preset and actual value   Analog output assigned to rate         Pulse output assigned to batch process         Pulse output assigned to total     1 stage control output 2 stage control output     Ticket printing         Overrun correction   External start/stop   RS-232, RS-485, TTL   Intrinsically safe or exp-proof CSA & ATEX ATEX ATEX ATEX ATEX Backlight

Explosion-Proof Enclosures For Fluidwell Batch Controllers

Hazardous Area Level Indicators
	F073 in alarm condition F170 with high/low alarms & backlight on F173 with linearization & backlight off
F070 with 1" high display & backlight on
Hazardous Area Level Indicators High/low alarms Linearization   F070 F073 F170 F077 F173   0-20 mA, 4-20 mA input 0-10 V input Displays volume, height and percentage Multi-point linearization       Analog output       High & low alarms   RS-232, RS-485, TTL       Intrinsically safe or exp-proof CSA & ATEX CSA & ATEX ATEX CSA & ATEX ATEX Backlight

Explosion-Proof Enclosures For Fluidwell Level Indicators

Explosion-proof Level measurement

Hazardous Area Pressure Indicators
	F053 with backlight off	F151 with backlight on
Hazardous Area Pressure Indicators High/low alarms   F050 F151 F053 F153   0-20 mA, 4-20 mA input 0-10 V input Actual pressure & engineering Analog Output       High & low alarms     Dual inputs       RS-232, RS-485, TTL     Intrinsically safe or exp-proof CSA & ATEX ATEX CSA & ATEX ATEX Backlight

Explosion-Proof Enclosures For Fluidwell Pressure Indicators

Hazardous Area Digital Pressure Gauges
Model	PD213, PD214, PD224	PD233, PD243, PD253
Type	Industrial	Precision Test
Accuracy	0.25% FS	0.05%, 0.10%, or 0.25% FS
Case Size	3", 4½"	3"
Case Material	(3") 300 Series stainless steel (4½") Fiberglass reinforced thermoplastic or black painted aluminum	300 Series stainless steel;Electropolished
Wetted Materials	17-4 PH stainless steel sensor; 316 stainless steel socket	316 stainless steel
Socket Size	¼"NPT, (½" NPT: 4½" case only)	¼"NPT
Connection	Lower (6 o’clock)
Ranges	Vac. to 20,000 psi & compound (see other engineering units below)	Vac. to 7,000 psi & compound (see other engineering units below)
Power Options	(3") Two AA alkaline batteries (4½") Two C alkaline batteries Loop-powered or 12-36 VDC	Three AAA alkaline batteries
Battery Life	(3") >1,000 hrs, (4½") >3,600 hrs	>1,000 hrs
On/Off	Manual on/off Auto off: never, 5, 10, 20 min
Display	5 digit LCD	5 digit LCD
Digit Height	(3") 0.60", (4½")	0.66"
Backlight	Option Auto off: 10 sec, 30 sec, 1 min, 5 min	Standard Auto off: 10 sec, 30 sec, 1 min, 5 min
Engineering Units	psi, mmHg, inHg, inH2O (temperature options: 4°C, 20°C, 60°F), mBar, ftH2O, MPa, kPa, kg/cm2, Bar	psi, inHg, inH2O, ftSW, Bar, mBar, kPa, MPa, mmHg, cmH2O, mmH2O, kg/cm2
Field Calibration	Zero & span Zero, mid-point & span Password protected	Zero & span Password protected
Programming Method	Front panel
Max/MinDisplay	Max & Min
Zero/Clear	Zeros display or clears max/min
Relays	2 Form C (-2 power only)	N/A
Relay Operation	High or low alarm	N/A
4-20 mA Output	N/A
Operating Temperature	-10 to 60°C	-18 to 65°C
Approvals	CE, EN 50082-1 (1997) FM & CSA (option)	CE, EN 50082-1 (1997) FM & CSA
More Information	Click Here	Click Here

Loop-Powered Meters For Pressure Transmitters and Transducers

Hazardous Area Temperature Indicators
		F143 with high/low alarm in in alarm condition
		F040 Dual temperature indicator with backlight on
Hazardous Area Temperature Indicators High/low alarms   F040 F043 F143   0-20 mA, 4-20 mA input 0-10 V input 100 ohm RTD (Pt100) Actual temperature & engineering units Analog Output     High & low alarms   Dual input       RS-232, RS-485, TTL     Intrinsically safe or exp-proof CSA & ATEX CSA & ATEX ATEX Backlight

Explosion-Proof Enclosures For Fluidwell Temperature Indicators

Explosion-Proof Temperature Indicator

Trident temperature meters mounted inside an explosion-proof enclosure