INVALCO Totalizers, Flow Computers and Transmitters

Model 505 Rate/Totalizer
The INVALCO Model 505 Rate/Totalizer in its standard configuration, is a meter- or wall mounted, battery- operated, intrinsically-safe, self-contained design suitable for use in both Nema 4X weather-proof and Nema 7 explosion-proof areas. Designed primarily to operate with turbine meters, this device is capable of working with positive displacement, coriolis, paddle wheel, or other frequency-producing or contact-type flowmeters.

Options exist to transmit the rate as a frequency or 4-20 mA signal and for high and low alarm contacts powered externally.

Model 700 Batch Controller
The INVALCO Model 700 Batch Controller is a single- or dual-stage controller complete with volume and non-linearity correction as well as automatic over-run compensation.

Other options include Mass Flow Indication, Quadrature Pulse Input (bidirectional), and a 4-20 mA or a RS232/422 output.

Model 3002 Frequency to Current Converter
INVALCO's Model 3002 two-wire transmitter is a flow rate-to-analog converter designed to interface with external process control systems or controllers. This unit converts the raw turbine meter pulse train into a linear 4-20 mA output.

Available in an integral (meter) or remote mount Nema 7 explosion-proof enclosures.

Model 705 Gas Flow Computer
Designed for use with our GT Series gas turbine meters, the Model 705 Gas Flow Computer compensates for pressure and temperature changes within the measurement stream. A backlit, two line, alphanumeric display provides a clear indication of all parameters. Fully programmable from the front panel, this device provides both gross and net totals, rate, and a scaled pulse output as standard.

Options include a 4-20 mA retransmission of rate, high and low flow alarms, and an RS232/422 communications output.

Model 715 Liquid Flow Computer
In its simplest form the Model 715 Liquid Flow Computer is a panel-mounted rate/totalizer, that will, with the proper options, correct for volume changes caused by temperature or product density. Additional features include mass flow using a density or temperature input, volume correction to 60°F or 15°C for petroleum products, and volume correction for general liquids using the Thermal Coefficient of Expansion.

Options include a 4-20 mA retransmission of rate scaled pulse outputs, high and low rate alarm relays, and an RS232/422/485 communication port.

INVALCO Level Measurement 

Model 7450 Conductance Level Control
Designed for conductive liquids, this level switch is a low cost control that is easy to install and calibrate.

• Single or Dual Rigid Electrode
• Flexible Electrode
• Maximum Working Pressure 125 PSIG
• Operating Temperature -20° to 160°F

Model 9450 Leveltronic® Conductance Level Switch
The INVALCO 9450 Leveltronic® Control Relay is a conductance level switch for detecting the level of conductive materials. When this material comes in contact with the electrode, the elecrode is "shorted" and establishes a current path to the ground. The unit responds to the "short" by actuating a relay.

• Sensitivity 250-400K Ohms
• Maximum Distance From probe 900ft.
• Operating Temperature -40° to 185°F

8100 Series "RF" Capactance Point Level Control
The 8100 Series electronic point level controller is designed to suit your needs for accurate, reliable, level measurement. Our patented design makes installation easy and eliminates false readings and seasonal adjustments.

• Integral or Remote Mount Units
• 3A Sanitary Version Available
• Maximum Working Pressure 600 PSIG
• Operating Temperature -20° to 160°F

Sanitary Leveltronic® Conductance Level Control

The sanitary leveltronic level control meets 3A Sanitary Standard 37.01 for liquid sensing devices. Excellent performance in foaming liquids. This unit provides accurate level control of conductive liquids to less than 0.01".

• Available With up to Four Probes per Unit
• Maximum Pressure 250 PSIG
• Operating Temperature -40° to 185°F
• Sensitivity Adjustable, 0 to 200K Ohms

Model IMS 780/783 "RF" Capacitance Interface MeasurementThis measurement system is a capacitance-type system offering precise control of liquid interface level. A non-fouling probe for continuous, reliable use is standard.

• Sensitivity of ±0.3pf
• Maximum Working Pressure 1,500 PSIG
• Operating Temperature -20° to 160°F

INVALCO Water-in-Oil and Oil-in-Water Monitors
and Analyzers / Control Products 

Model OCM 7100 Oil Contaminant Monitor

INVALCO's OCM 7100 Oil Contaminant Monitor guarantees low level, reliable detection of small amounts of water and water-based contaminants in oil or other hydrocarbons. It comes standard in a variety of probe sizes and connections with the electronics in a Nema 7 explosion-proof enclosure.

• Accuracy of ±0.01% Water Volume
• Range of 100 to 40,000 ppm (.01 to 4%)
• 4-20 mA and One 10 amp SPDT Control Relay Output

Micro Valves®

The Micro Valve is a unique, patented, miniature valve offering reliability and rugged construction. It adapts easily to solve pneumatic and liquid control problems. With an over center, snap-action operator the basic unit consists of a three-way, two position valve and may be adapted for two-way shut-off service.