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MODEL | SPECIFICATIONS |
PHYSICAL SPECIFICATIONS
HOUSING:
mmx 161.3 mm (6.3 in. x 6.9 in. x 6.4 in.) DIAMETER: 155.4 mm (6.1 in.)
ELECTRICAL CONDUIT OPENINGS: 3/4 in. FNPT
POWER SUPPLY AND LOAD: A power supply voltage of 9 Vdc to 32 Vdc at 22 mA is required; Intrinsically Safe installations may be limited to a maximum of
LOCAL READOUT:
Main Display is 4 digits, 20 mm tall (0.8 in.) Message Display is ten digits, 7 mm tall (0.3 in.)
AUTOMATIC TEMPERATURE COMPENSATION:
Conductivity: 0 to 200 °C (32 to 392 °F)
%concentration: 0 to 100 °C (32 to 212°F) AMBIENT TEMPERATURE:
RELATIVE HUMIDITY:
CE: EMI/RFI certified:
HAZARDOUS AREA CLASSIFICATION:
Intrinsic Safety:
Class I, II, III, Div. 1
Groups
T4 Tamb = 70°C
Exia Entity
Class I, Groups
Class II, Groups
Class III
T4 Tamb = 70°C
ATEX 0600
II1 G Baseefa03ATEX0399 EEx ia IIC T4 Tamb =
Non-Incendive:
Class I, Div. 2, Groups
Dust Ignition Proof
Class II & III, Div. 1, Groups
NEMA 4X Enclosure
Class I, Div. 2, Groups
Suitable for Class II, Div. 2, Groups
T4 Tamb = 70°C
Explosion-Proof:
Class I, Div. 1, Groups
Class II, Div. 1, Groups
Class III, Div. 1
Class I, Groups
Class II, Groups
Class III
Tamb = 65°C max
TRANSMITTER 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,
AMBIENT TEMPERATURE COEFFICIENT: ± 0.2% of FS/°C
COMPATIBLE RTD: 100Ω with Automatic Recognition
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%
LOOP SPECIFICATIONS
LOOP ACCURACY: With a standard Model 228 or 225 sensor 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 standardiztion, temperature read- ing can be as good as ±0.5°C.
RECOMMENDED SENSORS:
Model 222
Model 225
Model 226 Submersion/Insertion
Model 228 Submersion/Insertion/Retractable
Model 242
*Model
RECOMMENDED RANGES FOR TOROIDAL SENSORS
| Conductivity Sensor |
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| Model Number | 226 | 228 | 225 | 222 (1in.) | 222 (2 in.) | 242 |
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| Nominal Cell Constant | 1.0 | 3.0 | 3.0 | 6.0 | 4.0 | * |
| Minimum Conductivity (∝S/cm) | 50 | 200 | 200 | 500 | 500 | 100* |
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| Maximum Conductivity (∝S/cm) | 1,000,000 | 2,000,000 | 2,000,000 | 2,000,000 | 2,000,000 | 2,000,000* |
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* Model 242 values depend on sensor configuration and wiring.
NOTE: Values shown are for 25°C conductivity with a temperature slope of 2% per degree C. The maximum range
2 | value will be lower for solutions with a higher temperature slope. Minimum conductivity depends on sensor. |
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