Instruction manual
MODEL 5081-C SECTION 1.0
DESCRIPTION AND SPECIFICATIONS
1.2.3 TRANSMITTER SPECIFICATIONS @ 25°C
Measured Range: 0-20,000 µS/cm
Accuracy: ± 0.5% of reading and ± 0.001 µS/cm
Repeatability: ± 0.25% of reading
Stability: 0.25% of output range/month, non-cumulative
Ambient Temperature Coefficient:
± 0.05% of reading/°C
Temperature Slope Adjustment: 0-5%/°C
o ther temperature compensation algorithms: ultra-pure
water compensation, cation conductivity, or raw
(uncompensated) conductivity.
Compatible RTD: 100W or 1000W with Automatic
Recognition
1.2.4 LOOP SPECIFICATIONS
Accuracy: under controlled laboratory conditions at 25°C
(77°F) with perfectly calibrated ENd u RANCE sensor of
appropriate cell constant:
up to 5,000 µS/cm: ± 1.0% and ± 2 least significant
digit
from 5,000 to 20,000: ± 2% of reading and ± 2 least
significant digit
1.2.5 SENSOR SELECTION GUIDELINES
Note: The conductivity values shown in the above chart are for
UNCOMPENSATED (or RAW) conductivity at 25°C.
Maximum range values will vary due to temperature compen-
sation selection, process temperature, and other process
conditions.
RECOMMENDED SENSORS:
Model 140 Retractable Conductivity
Model 141 insertion High Conductivity
Model 142 insertion Low Conductivity
Model 150 insertion/Submersion Conductivity
Model 400 Screw-in Low Conductivity
Model 400VP Screw-in Low Conductivity
Model 401 Screw-in High Conductivity
Model 402 Retractable Conductivity
Model 402VP Retractable Conductivity
Model 403 Sanitary Conductivity
Model 403VP Sanitary Conductivity
Model 404 Low Flow Conductivity
1.3 HAzARDOUS LOCATION APPROvAL
Intrinsic Safety:
Class i, ii, iii, d iv. 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
iECEx BAS 09.0159X
Ex ia iiC T4 Ga
ATEx 1180
ii 1 G
Baseefa03ATEX0099
EEx ia iiC T4
Tamb = -20°C to +65°C
ATEx and IECEx Special Conditions for Use: The model 5081
enclosure is made of aluminum alloy and is given a protective
polyurethane paint finish. However, care should be taken to protect
it from impact or abrasion if located in a zone 0 hazardous area.
Non-Incendive:
Class i, d iv. 2, Groups A-d
d ust ignition Proof
Class ii & iii, d iv. 1, Groups E-G
NEMA 4X Enclosure
Class i, d iv. 2, Groups A-d
Suitable for
Class ii, d iv. 2, Groups E-G
T4 Tamb = 70°C
Explosion-Proof:
Class i, d iv. 1, Groups B-d
Class ii, d iv. 1, Groups E-G
Class iii, d iv. 1
Class i, Groups B-d
Class ii, Groups E-G
Class iii
Tamb = 65°C max
Cell Constant Suggested Conductivity Range
0.01/cm up to 50 µS/cm
0.1/cm 1.0 to 500 µS/cm
1.0/cm 10 to 20,000 µS/cm
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