
Flow measurement
NT500 batch controller
The NT500 controls product loading and unloading at oil depots and on custody transfer lines. It works with almost any flow meter, and can read temperature, pressure and density to correct the quantity delivered. The operator sets the amount; the NT500 runs the pump and valves and stops on the preset.
- Single-arm or multi-arm loading
- Works with almost any pulse-output flow meter
- Drives two-stage, multistep or 4-20 mA control valves
- Connects to SCADA or a terminal automation system over Modbus TCP
- Stores over 100,000 loadings and prints delivery reports
- Explosion-proof: Ex d[ib] ib IIB T4
How it works
Set it, load it, stop it.
Set
The operator picks the product and enters the preset, on the keypad or from the terminal automation system.
Load
The NT500 checks the interlocks, opens the valves and starts the pump. It counts the flow and watches flow rate and temperature while product is delivered.
Stop
Near the preset it drops to low flow to avoid splashing, then closes the valves and stops the pump on the exact amount. The delivery is stored and can be printed.
Where it is used
Typical applications.
- Truck loading bays
- Oil depots and terminals
- Custody transfer lines
- Additive injection during loading
Full datasheet
The full datasheet comes with your quote. Tell us about your process and we will confirm the right version.
Ask for the full datasheetTechnical data
Key specifications.
- Explosion protection
- Ex d[ib] ib IIB T4
- Accuracy
- ±1 pulse
- Power supply
- 220 V AC or 24 V DC, 0.5 A
- Ambient temperature
- −50 to +65 °C
- Flow meter input
- Pulse, 2 V peak-to-peak or more, up to 30 kHz
- Inputs and outputs
- Switch inputs, relay outputs, analog inputs and outputs, all expandable
- Valve control
- Two-stage, multistep digital, or analog 4-20 mA
- Communication
- Ethernet 10/100 with Modbus TCP, RS485, 2 serial ports, USB, Siemens MPI and PPI. Profibus-DP and CAN as options.
- Data memory
- Over 100,000 loading records
Works well with
Complete the loop.

Flow
Mass flow meter
Mass flow measured directly, for batching, blending and loading.
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Level
Tuning fork level switch
A clear high or low level alarm at one point in the tank.
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Temperature
Temperature transmitter
Reliable temperature readings from the field.
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