ISTEC Corporation, your Flow Measurement and Control Specialist

Flow Measurement & Control
5 Park Lake Road, Unit 6
Sparta, NJ 07871 USA
Tel 973-383-9888
Fax 973-383-9088

FreeFlow Newsletter from ISTEC

Newsletter Sign-up Here


We will be closed on May 24th and May 27th, 2019 in observation of Memorial Day.

We will open again on Tuesday May 28th, 2019

Remember our troops in your prayers as they keep us safe on this Memorial Day.

We Accept

We Accept MasterCard, Visa and American Express

Last Update:

 9503 / 9504 Pulse Input Totalizer/Ratemeter/Analog OutputModel 9503/9504 Remote Meter Display

ISTEC’s 9503 / 9504 are General Purpose Displays

Displays that conditions the electrical signal generated by the flow meter and scales the resulting flow information into a flow rate and flow total display in the units of measure desired. Additional functionality such as alarms, analog output, pulse output, and serial communications may also be provided.

Our NEW NEMA 4X Enclosure assures long life in harsh environments.



  • #9503: Rate & Total
  • #9504: Rate, Total & Analog Output
  • #9503M: Rate, Total & Modbus RTU
  • #9508: Dual Rate, Total & Analog Output (A-B)
  • Power: 110 VAC ± 15% or 12 to 15 VDC Standard
  • Display: 6 digit, 0.55" High LED
  • Temperature Range:
  • Operating: +32°F (0°C) to +130 F (+54°C)
  • Storage: -40 F (-40°C) to +200°F (93°C)
  • Signal Input:
  • High Impedance DC pulse input 4-30 VDC (high),Open or 0-1 VDC (low), 10 K Ω imp. 10 kHz max. speed.
  • Accepts simultaneous inputs.

  • Approvals: CSA File# LR91109-7, CE Compliant
  • Material: VELOX®
  • Connection: Terminal block supplied on counter
  • Programming: Front Panel
  • Sealing: NEMA 4X/IP66 Enclosure
  • Housing: 7" x 5" x 5" (WxHxD)

Wiring Diagram

Download PDF VersionDownload Installation Manual