WILKERSON INSTRUMENT CO., INC.

TW850X AC Input Two-Wire Transmitter
With Optional Isolation

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TW850X

TW850X
AC Input
Two-Wire Transmitter
With Optional Isolation

This product is no longer available.

Recommended Replacement SR2700

 

 
  • Features
  • Description
  • Specifications
  • Dimensions
  • Connections
  • Provides DC Output Proportional to Frequency Input
  • Fully Isolated Input / Output Available
  • 30 mV to 500 V Peak Input Sensitivity
  • Three Threshold Ranges
  • Pull-up Resistor
  • Unlimited Choice of Input Ranges (Within specified range limits)
  • Low-Drift Copper-Stabilized Input
  • NEMA-4X Splashproof and Corrosion Resistant
  • 5 Year Warranty

The TW850X provides a DC output current proportional to a frequency input signal with an optional display in a "hockey puck" case. Optional isolation is also available for the transmitter. The transmitter is protected by a gasketed, NEMA-4X glass-filled polyester housing and operates from -40°C to +85°C. The chopper-stabilized input amplifier provides accurate, low-drift operation.

All Wilkerson products are designed with RFI filters and lightning protection to reduce susceptibility to electrical noise and damage by lightning.

The output ZERO and SPAN controls are accessible through the top of the housing.

Optional conformal coating of the electronic components makes the TW850X extremely reliable and resistant to the corrosion, moisture and fungus associated with many industrial environments. A built-in pull-up resistor is provided to permit use with contact closure or open-collector inputs.

Terminations are made to screw terminal connectors on the top of the case.

TYPICAL APPLICATIONS
Remote motor, conveyor speed, data acquisition, isolation

INPUT RANGE
select any range from 0 to 10 Hz min to 0 to 5 kHz max

INPUT SENSITIVITY
(Peak-to-Peak) any voltage from 30 mV to 500 V

MAX DC OFFSET
High Range ±250 VDC
Low and Medium Range ±30 VDC

INPUT IMPEDANCE
High and Medium Range 100 kilohms
Low Range 10K ohms
Built-In Pull-up Resistor 10K ohms
Open-Circuit Voltage 6.5 VDC

OUTPUT RANGE
4/20 mA (10/50 mA optional)

ISOLATION (Optional)
Output / Input >500 megohms
Breakdown Voltage >600 VAC rms

RESPONSE TIME
(Range Dependant) < 1.5 sec

MAX LOAD RESISTANCE
RL max= (V supply - 12)/I out max

ACCURACY
±0.1% of span

LINEARITY
±0.1% of span

OUPUT RIPPLE (Peak-to-Peak)
0.1% of span

LINEARITY
±0.5% of span

OPERATING TEMPERATURE
-40°F to 185°F/-40°C to 85°C

TEMPERATURE STABILITY
±0.01% of span/°C max

POWER
12 to 48 VDC

SUPPLY VOLTAGE EFFECT
0.01% of span max, 12 TO 48 VDC

TW8000 Series Dimension Drawing

PIN PS +
PIN PS -
Power Supply +
Power Supply -

FREQUENCY INPUT CONNECTIONS
Input Amplitude Connect to Terminals Jumper
Low: 30 mV to 5V pk-pk
 10 mV to 1.7 V rms sine
3 and 4 none
Med: 300 mV to 50 V pk-pk
 100 mV to 17 V rms sine
2 and 4 none
High: 3V to 500 V pk-pk
 1 V to 170 V rms sine
2 and 4 3 and 4
Contact Closure or
 Open Collector
2 (+) and 4 (-) 1 and 2
Specifications    Manual

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Process Control Instrumentation