Emerson 5081-T Recommended Sensors, Atex, Recommended Ranges for Toroidal Sensors

MODEL 5081-T	SECTION 1.0
	DESCRIPTION AND SPECIFICATIONS

1.2.3TRANSMITTER SPECIFICATIONS @ 25°C Measured Range*: 50 to 2,000,000 µS/cm (see chart) Accuracy: ± 1.0% of reading

Repeatability: ± 0.25% of reading

Stability: 0.25% of output range/month, non-cumulative

Ambient Temperature Coefficient: ± 0.2% of FS/°C

Temperature Slope Adjustment: 0-5%/° C

%Concentration Ranges: Sodium Hydroxide: 0 to 15% Hydrochloric Acid: 0 to 16%

Sulfuric Acid: 0 to 25% and 96 to 99.7%

1.2.4 LOOP SPECIFICATIONS

Loop Accuracy: With a standard Model 228 or 225 sen- sor with 20' cable, laboratory accuracy at 25°C can be as good as ±2% of reading and ±50 µS/cm.

To achieve optimum performance, standardize the sen- sor in the process at the conductivity and temperature of interest.

Results under real process conditions, at different tem- peratures, or using other sensors may differ from above.

RTD accuracy: Utilizing a perfect 100 Ohm RTD after 1 point temperature standardization, temperature reading can be as good as ±0.5°C.

1.3 HAZARDOUS LOCATION APPROVAL

Intrinsic Safety:

Class I, II, III, Div. 1

Groups A-G

T4 Tamb = 70°C

Exia Entity

Class I, Groups A-D

Class II, Groups E-G

Class III

T4 Tamb = 70°C

ATEX 1180

II1 G Baseefa03ATEX0399 EEx ia IIC T4 Tamb = -20°C to +65°C

Non-Incendive:

Class I, Div. 2, Groups A-D

Dust Ignition Proof

Class II & III, Div. 1, Groups E-G

NEMA 4X Enclosure

RECOMMENDED SENSORS:

Model 222 Flow-Through

Model 225 Clean-In-Place (CIP)

Model 226 Submersion/Insertion

Model 228 Submersion/Insertion/Retractable

Model 242* Flow-Through

*no I.S. approval for loops of 5081-T with 242-06 or 242-08

Class I, Div. 2, Groups A-D

Suitable for

Class II, Div. 2, Groups E-G

T4 Tamb = 70°C

Explosion-Proof:

Class I, Div. 1, Groups B-D

Class II, Div. 1, Groups E-G

Class III, Div. 1

Class I, Groups B-D

Class II, Groups E-G

Class III

Tamb = 65°C max

RECOMMENDED RANGES FOR TOROIDAL SENSORS
Conductivity Sensor
Model Number	226	228	225	222 (1in.)	222 (2 in.)	242
Nominal Cell Constant	1.0	3.0	3.0	6.0	4.0	*
Minimum Conductivity (∝S/cm)	50	200	200	500	500	100*
Maximum Conductivity (∝S/cm)	1,000,000	2,000,000	2,000,000	2,000,000	2,000,000	2,000,000*
* Model 242 values depend on sensor configuration and wiring.						3