Model 417 2-Wire Conductivity Transmitters A0858 Intrinsically Safe; Non lncendive Dirty Sensor Alarm Design Multi-Range Capability Optional LCD Readout Display Independent of Output Pushbutton for Current Display NEMA 4X Housing Adjustable Transmitter Output-Isolated The Model TB417 converts an on-stream conductivity sensor signal to an isolated 4-20 mA output. It functions as an extremely stable analyzer and provides an interface between the stream sensor and a variety of recorders, controllers, computers and data loggers commonly used in industry. The TB417 is able to accept a wide range of DC power inputs from 12 to 40 Vdc. The TB417 utilizes an exclusive, patented 4 electrode measurement circuit (US Patent 4118663) that automatically compensates for fouling and polarization while maintaining excellent linearity and accuracy across wide ranges of conductivity. Using a unique yet simple circuit design, the Model TB417 also monitors its own performance and can detect whether its sensor needs servicing. and Sensor Service Module Notification of a fouled sensor can be achieved with the addition of the TBI-Bailey Sensor Service Module (SSM) to the Model TB417 current loop. Three jumper selectable sensitivity limits exist within the TB417; early warning, medium and normal. When the optional Liquid Crystal Display (LCD) is selected with the Model TB417, user convenience and ease of calibration are greatly enhanced. The Conductivity value is continuously displayed, but transmitter output is available, to 0.1 mA resolution by simply depressing the “Display Transmitter Current” front panel pushbutton. The Model TB417 displays the true process Conductivity value independent of output current transmitter signals. Calibration controls accessible on the front panel allow for easy adjustment without exposing transmitter electronics. A range switch, located at the lower front panel, further extends this instrument’s versatility. This switch permits immediate selection of any of five analyzer range factors (0.01, 0.10, 1.00, 10.00 and 100.00) to extend the measurement range of any TBI Conductivity sensor. Housings for the Model TB417 are NEMA 4X. Protective finishes can be specified as either unpainted anodized or polyurethane coated and anodized. CPVC may be selected to replace the aluminum electronics and terminal covers leaving only the main casting as metal. Mechanical mounting of these instruments may be made directly to conduit, or through use of our optional mounting bracket, the Model TB417 may be conveniently mounted to a wall, l-beam, angle or pipe. A comprehensive line of unique Conductivity sensors utilizing the TBI-Bailey patented 4 electrode design is also available. For information on these sensors, request data sheet E67-23-1. TBI-Bailey Controls
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Model 417 2-WireConductivity Transmitters
A0858
Intrinsically Safe; Non lncendiveDirty Sensor Alarm DesignMulti-Range CapabilityOptional LCD ReadoutDisplay Independent of OutputPushbutton for Current DisplayNEMA 4X HousingAdjustable Transmitter Output-Isolated
The Model TB417 converts an on-stream conductivitysensor signal to an isolated 4-20 mA output. It functions asan extremely stable analyzer and provides an interfacebetween the stream sensor and a variety of recorders,controllers, computers and data loggers commonly used inindustry. The TB417 is able to accept a wide range of DCpower inputs from 12 to 40 Vdc.
The TB417 utilizes an exclusive, patented 4 electrodemeasurement circuit (US Patent 4118663) that automaticallycompensates for fouling and polarization while maintainingexcellent linearity and accuracy across wide ranges ofconductivity. Using a unique yet simple circuit design, theModel TB417 also monitors its own performance and candetect whether its sensor needs servicing.
and Sensor Service Module
Notification of a fouled sensor can be achieved with theaddition of the TBI-Bailey Sensor Service Module (SSM) tothe Model TB417 current loop. Three jumper selectablesensitivity limits exist within the TB417; early warning,medium and normal.
When the optional Liquid Crystal Display (LCD) isselected with the Model TB417, user convenience andease of calibration are greatly enhanced. The Conductivityvalue is continuously displayed, but transmitter output isavailable, to 0.1 mA resolution by simply depressing the“Display Transmitter Current” front panel pushbutton. TheModel TB417 displays the true process Conductivity valueindependent of output current transmitter signals.
Calibration controls accessible on the front panel allowfor easy adjustment without exposing transmitter electronics.A range switch, located at the lower front panel, furtherextends this instrument’s versatility. This switch permitsimmediate selection of any of five analyzer range factors(0.01, 0.10, 1.00, 10.00 and 100.00) to extend themeasurement range of any TBI Conductivity sensor.
Housings for the Model TB417 are NEMA 4X. Protectivefinishes can be specified as either unpainted anodized orpolyurethane coated and anodized. CPVC may be selectedto replace the aluminum electronics and terminal coversleaving only the main casting as metal. Mechanical mountingof these instruments may be made directly to conduit, orthrough use of our optional mounting bracket, the ModelTB417 may be conveniently mounted to a wall, l-beam,angle or pipe.
A comprehensive line of unique Conductivity sensorsutilizing the TBI-Bailey patented 4 electrode design is alsoavailable. For information on these sensors, request datasheet E67-23-1.
Operating Lower limitation on LCD is -20°C. RatedTemperature performance 0°C to + 5O°C,
Operating range -40°C to + 60°C,Storage range -40°C to + 100°C
Temperature Manual or automaticCompensation
Common Mode 0.2% of span at 100 Vdc at 60°C.Rejection 40 Vdc isolation
Isolation Input to outputhipot at 500 Vac
Power 12 Vdc plus 0.02 V per ohm load at 4-20Requirements mA to maximum of 40 Vdc
Housing Polyurethane coated, anodizedaluminum, NEMA 4X. CPVC available.
Conduit 2 each, 3/4” FNPTConnection
Weight Max. 7.1 Ibs. (3.2 kg)
2
Sensor Service Module, P/N 4TB6001-0174
Although TBl’s four-electrode sensor design is highlyresistant to errors from process fouling, the accuracy of ameasurement can be greatly affected when fouling becomesexcessive. If the sensor does not receive the propermaintenance, an industrial plant could suffer losses inefficiency as well as reductions in equipment life-span. Theaddition of the optional Sensor Service Module (SSM)eliminates the guess work in predicting these maintenanceintervals.
The SSM monitors the output current from the ModelTB417. When sensor fouling exceeds the preset limit(determined by a jumper within the Model TB417), theModel TB417 sends a 200 mv p to p 90 Hz signal to the SSMactivating the SPDT dry contact closure and the 24 Vdcpowered relay.
The module, in conjunction with the Model TB417, hasthree levels of fouling sensitivity: early warning, medium,and normal. Early warning sensitivity activates the SSMbefore sensor deposits affect conductivity measurements.Normal sensitivity triggers the SSM when the accuracy ofa given indication is affected by +/- 0.5%. The mediumsensitivity compromises between these two settings.Selecting the fouling sensitivity dictates the balance betweenmeasurement accuracy and the frequency of sensormaintenance.
Sensor Service Module Specifications
Input 90 Hz, 200 mv peak to peak signal on the4-20 mA from the Model TB417conductivity transmitter.
E67-34 Model TB417 2-Wire Conductivity Transmitter and Sensor Service Module
01234
Model TB417 CertificationCertifications by Factory Mutual Research (FM), Canadian Standards Association (CSA),and Standards Association of Australia (SAA) are as follows:
Non lncendive (Non Sparking)FM: Classes I, II, III; Div. 2; Groups A-D, F, G
CSA: Class I; Division 2; Groups A-DSAA*: Ex n, Zone 2; Group IIC
Intrinsically Safe (when connected with appropriate barriers per TBI-Bailey drawing P0620)
FM: Classes I, II, III; Div 1; Groups A-GEntity barrier approval: Vmax-40V; I max - 332 mA
Ci - 0.02 µF; Li - 0mHCSA: Classes I, II, III; Div 1; Groups per barrier; T3C
Entity barrier approvalSAA*: Exia, Zone 0, 2; Group IIC
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