ATEX Level Sensor | Intrinsically Safe Level Transmitter | Pi99EX

The Pi99EX ATEX level sensor / intrinsically safe level transmitter is designed for use in a wide range of hazardous area applications such as fuel and oil tank measurement, sewage monitoring and leachate level measurement on landfill sites.

The ATEX level sensor’s body is constructed from 316 stainless steel as standard and can also be offered in titanium if the pressure media is particularly aggressive. Polyurethane (PUR) cable is provided as standard and Teflon (PTFE) cable is available as an option if demanded by harsh media.

The ATEX level sensor output is a 2-wire 4-20mA signal which has a surge protection circuit to mitigate the effects of electrical transients caused by nearby lightning strikes and power supply fluctuations.

Standard	A (mm)	B (mm)	C (mm)	D (mm)	Weight (g)
Without Ballast Weight	113	109	on request	on request	approx. 160
With Ballast Weight	200	196	on request	on request	approx. 420

Version with Surge (Lightning) Protection	A (mm)	B (mm)	C (mm)	D (mm)	Weight (g)
Without Ballast Weight	157	153	on request	on request	approx. 200
With Ballast Weight	244	240	on request	on request	approx. 460

Pi99EX Pressure Range Specifications

Pressure Range		0.1 - 0.5	>0.5 - 2	>2 - 25	Bar
Overpressure		3	3 x FS (min. 3 bar)	3 x FS	bar
Burst Pressure		>200	>200	>200	bar
Accuracy1		≤0.5	≤0.5	≤0.5	±%FS
		(optional ≤0.25)	(optional ≤0.25, ≤0.1)	(optional ≤0.25, ≤0.1)
Temperature Error Zero	0 to +70˚C	0.06	0.03	0.015	±%FS/˚C
	-25 to +85˚C	0.08	0.04	0.02	±%FS/˚C
Temperature Error Span	0 to +70˚C	0.015	0.015	0.015	±%FS/˚C
	-25 to +85˚C	0.02	0.02	0.02	±%FS/˚C
Operating Temperature		0 to +70			˚C
Storage Temperature		-25 to +85			˚C
Long-Term Stability (1 year) (typ./max.)		<4 mbar	<4 mbar	<0.2%FS
1) Zero based non-conformity according to DIN 16086, including hysteresis and repeatability.

Electrical Connections	4-20mA (2 wire)
Supply Voltage	10 - 30 Vdc
Supply Voltage Influence	<0.1%FS
Load Resistance Influence	<0.1%FS
Pressure Connection, Diaphragm, Housing	Stainless Steel 1.4435 (316L) or titanium (optional)
Seals (standard)	Viton (other materials see ordering information)

Pi99EX EX-Approvals

Ex-Approval
Type of Protection	Intrinsic safety II 1G EEx ia IIC T4...T6	SEE Certificate SEE 99 ATEX 2640
Standards	EN 50 014: 1992	general requirements
	EN 50 020:1994	intrinsic safety "i"
	EN 50 284: 1997	special requirements zone 0
Max. values for supply/output circuit	30V / 100mA / 1W	zener barrier
Temperature Class	T6	T4
Ambient Temperature Ta ˚C	-25 to +55	-25 to +85
Process Temperature ˚C	-25 to +55	-25 to +85
Without any information about temperature class the transmitter will be labelled T4.
Ex-Approval for dust on request.

Pi99EX Electromagnet Compatibility

Electromagnety Compability	Norm	Level	Typical Interferences
Emission:
EN 50081-1:1992	Generic Emission Standard
EN 55022: 1994	Emission, Class B
Immunity:
EN 50082-2: 1995	Generic Immunity
EN 61000-4-2: 1995	Electrostatic Discharge	4kV contact, 8kV air
ENV 50140: 1993	Radiated Electro-magnetic Field	10V/m, 80-1000 MHz, 80% AM 1kHz	Cellular Phones, Radio Sets
ENV 50204: 1995	Radiated Electro-magnetic Field (GSM)	10V/m, 950 MHz, 200 Hz on/off	Digital Portable Phones
EN 61000-4-4: 1995	Fast Transients (burst)	2kV	Motors, Valves
ENV 50141: 1993	Conducted Radio Frequency	10 V, 0.15-80 MHz, 80% AM 1 kHz	Cellular phones, radio sets
EN 61000-4-5: 1995 2)	Surge	10 kA (8/20 µs)	Lightning Strikes
2) Only with optional surge (lightning) protection

Pi99EX Wiring

Wire	Designation
White	+ve supply
Brown	-ve supply
Green/Yellow	Case/Earth

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