Explosion-Proof Pulse Input Flow Rate/Totalizer


The Tek-LCD 7803B is an explosion-proof flow rate/totalizer that can display flow rate and total from a pulse output flow meter. Its display has a five digit upper line for rate, a seven alpha-numeric character lower line for total, and comes standard with a backlight. The Tek-LCD 7803B carries FM, CSA, ATEX, and IECEx approvals for use in hazardous areas. It can be powered from an included battery or a 24 VDC external power supply.

  • Automatic Rate, Total, and Grand Total Unit Conversions
  • On-Board Data Logging
  • Modbus Communications RS-485 Option
  • All models Operates from -40 °C to 75 °C
  • Two Isolated Open Collector Pulse Outputs, Up to 5 kHz
  • Open Collector, NPN, PNP, TTL, Switch Contact, Sine Wave (Coil), Square Wave, Opto-Isolated Inputs
  • Isolated 4-20 mA Output for Rate, Total, or Grand Total
  • Battery, DC, or Output Loop-Powered Models
  • Explosion-Proof, IP68, NEMA 4X Enclosure
Power Options9-30 VDC, 2.2 W max; 4-20 mA Output Powered, 30 VDC max; battery power;
Operating Temperature Range-40 °C to 75 °C
Storage Temperature Range-40 °C to 75 °C
Battery3.6 V Primary Lithium (Li-SOCl2), non-rechargeable Model PDABAT36C.
Relative Humidity0 to 90% non-condensing
ConnectionsScrew terminals accept 12 to 22 AWG wire
EnclosureExplosion-proof die-cast aluminum with glass window, corrosion resistant epoxy coating
MountingMay be mounted directly to conduit.
Overall Dimensions5.67″ x 5.24″ x 4.88″ (W x H x D)(144 mm x 133 mm x 124 mm)
Weight5.00 lbs (80 oz, 2.27 kg)

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